SHAREHOLDER RIGHTS PLAN AGREEMENT April 22, 2017 between NEXGEN ENERGY LTD. and COMPUTERSHARE INVESTOR SERVICES INC. as Rights Agent

Execution Version

SHAREHOLDER RIGHTS PLAN AGREEMENT

April 22, 2017

between

NEXGEN ENERGY LTD.

and

COMPUTERSHARE INVESTOR SERVICES INC.

as Rights Agent

SHAREHOLDER RIGHTS PLAN AGREEMENT

Table of Contents

		Page

ARTICLE 1 INTERPRETATION

1.1	Certain Definitions	4
1.2	Holder	19
1.3	Acting Jointly or in Concert	19
1.4	Application of Statutes, Regulations and Rules	19
1.5	Currency	19
1.6	Headings and References	20
1.7	Singular, Plural, etc.	20
1.8	Generally Accepted Accounting Principles	20

ARTICLE 2 THE RIGHTS

2.1	Issuance and Legend on Common Share Certificates	20
2.2	Initial Exercise Price: Exercise of Rights: Detachment of Rights	21
2.3	Adjustments to Exercise Price, Number of Rights	24
2.4	Date on Which Exercise is Effective	30
2.5	Execution, Authentication, Delivery and Dating of Rights Certificates	30
2.6	Registration, Registration of Transfer and Exchange	30
2.7	Mutilated, Destroyed, Lost and Stolen Rights Certificates	31
2.8	Persons Deemed Owners	32
2.9	Delivery and Cancellation of Certificates	32
2.10	Agreement of Rights Holders	32

ARTICLE 3 ADJUSTMENTS TO THE RIGHTS IN THE EVENT OF CERTAIN TRANSACTIONS

3.1	Flip-in Event	33

ARTICLE 4 THE RIGHTS AGENT

4.1	General	35
4.2	Merger or Amalgamation or Change of Name of Rights Agent	36
4.3	Duties of Rights Agent	36
4.4	Change of Rights Agent	38

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4.5	Compliance with Money Laundering Legislation	39
4.6	Privacy Provision	39

ARTICLE 5 MISCELLANEOUS

5.1	Redemption and Waiver	39
5.2	Expiration	41
5.3	Issuance of New Rights Certificates	41
5.4	Supplements and Amendments	41
5.5	Fractional Rights and Fractional Common Shares	43
5.6	Rights of Action	44
5.7	Holder of Rights Not Deemed a Shareholder	44
5.8	Notice of Proposed Actions	44
5.9	Notices	45
5.10	Costs of Enforcement	46
5.11	Successors	46
5.12	Benefits of this Agreement	46
5.13	Governing Law	46
5.14	Counterparts	46
5.15	Severability	46
5.16	Determinations and Actions by the Board of Directors	47
5.17	Effective Date	47
5.18	Shareholder Review	47
5.19	Declaration as to Non-Canadian and Non-United States Holders	47
5.20	Regulatory Approvals	48
5.21	U.S. Registration	48
5.22	Force Majeure	48
5.23	Time of the Essence	48

Exhibit “A”

Form of Rights Certificate

SHAREHOLDER RIGHTS PLAN AGREEMENT

THIS AGREEMENT is made as of April 22, ▇▇▇▇,

▇ ▇ ▇ ▇ ▇ ▇ ▇:

NEXGEN ENERGY LTD., a corporation existing under the laws of
the Province of British Columbia

(the “Corporation”)

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COMPUTERSHARE INVESTOR SERVICES INC., a company
existing under the laws of Canada and having an office in Vancouver,
British Columbia

(“Rights Agent”)

WHEREAS:

(1)	The Board of Directors (as hereinafter defined) determined that it was advisable and in the best interests of the Corporation to adopt a shareholder rights plan agreement dated April 22, 2014 (the “Original Agreement”) to ensure, to the extent possible, that all holders of the Common Shares (as hereinafter defined) of the Corporation are treated fairly in connection with any Take-over Bid (as herein defined) and the Original Agreement expires as of the date hereof;

(2)	The Board of Directors has determined that it is advisable and in the best interests of the Corporation to adopt this shareholder rights plan (the “Rights Plan”) contemporaneously with the expiration of the Original Agreement to ensure, to the extent possible, that all holders of the Common Shares (as hereinafter defined) of the Corporation are treated fairly in connection with any Take-over Bid;

(3)	In the implementation of the Rights Plan, the Board of Directors:

	(a)	authorized the issuance of one Right (as hereinafter defined) in respect of each Common Share outstanding contemporaneously with the expiration of the rights under the Original Agreement (the “Record Time”) to each holder of record of Common Shares as of the Record Time;

	(b)	authorized the issue of one Right in respect of each Common Share issued after the Record Time and prior to the earlier of the Separation Time and the Expiration Time; and

	(c)	authorized the issuance of the Rights Certificates (as hereinafter defined) to holders of Rights pursuant to the terms and subject to the conditions set forth herein;

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(4)	Each Right entitles the holder thereof, after the Separation Time, to purchase securities of the Corporation pursuant to the terms and subject to the conditions set forth in this Agreement; and

(5)	The Rights Agent has agreed to act on behalf of the Corporation in connection with the issuance, transfer, exchange and replacement of Rights Certificates, the exercise of Rights and other matters referred to in this Agreement.

NOW, THEREFORE, in consideration of the premises and respective agreements set forth herein, the parties hereby agree as follows:

ARTICLE 1

INTERPRETATION

1.1	Certain Definitions

In this Agreement, unless the context otherwise requires:

“Acquiring Person” means any Person who is or becomes the Beneficial Owner of 20% or more of the outstanding Voting Shares; provided, however, that the term “Acquiring Person” shall not include:

	(i)	the Corporation or any Subsidiary of the Corporation;

	(ii)	an underwriter or member of a banking or selling group that acquires Voting Shares from the Corporation in connection with a distribution by the Corporation to the public of securities;

	(iii)	any Person who becomes the Beneficial Owner of 20% or more of the outstanding Voting Shares solely as a result of one or any combination of:

	(A)	a Corporate Acquisition which, by reducing the number of Voting Shares outstanding, increases the percentage of Voting Shares Beneficially Owned by such Person to or above 20% or more of the Voting Shares then outstanding;

	(B)	a Permitted Bid Acquisition;

	(C)	an Exempt Acquisition;

	(D)	a Pro-Rata Acquisition; or

	(E)	a Convertible Security Acquisition,

provided, however, that if a Person shall become the Beneficial Owner of 20% or more of the Voting Shares then outstanding by reason of any one or a combination of a Corporate Acquisition, Permitted Bid Acquisition, Exempt Acquisition, Pro-Rata Acquisition or Convertible Security Acquisition and, after such Corporate Acquisition, Permitted Bid Acquisition, Exempt Acquisition, Pro-Rata Acquisition or Convertible Security Acquisition, such Person subsequently becomes the Beneficial Owner of more than an additional 1% of the number of Voting Shares then outstanding other pursuant to any one or a combination of a Corporate Acquisition, Permitted Bid Acquisition, Exempt Acquisition, Pro-Rata Acquisition or Convertible Security Acquisition, then, as of such date such Person shall become an “Acquiring Person”;

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	(iv)	for a period of 10 days after the Disqualification Date (as hereinafter defined), any Person who becomes the Beneficial Owner of 20% or more of the outstanding Voting Shares as a result of such Person becoming disqualified from relying on clause (iii)(B) of the definition of Beneficial Owner. In this definition, “Disqualification Date” means the first date of public announcement of facts indicating that such Person has or is making or has announced an intention to make a Take-over Bid alone, through such Person’s Affiliates or Associates or by acting jointly or in concert with any other Person; or

	(v)	any Person (a “Grandfathered Person”) who is the Beneficial Owner of 20% or more of the outstanding Voting Shares determined as at the Record Time, provided, however, that this exception shall not, and shall cease to, apply if, after the Record Time the Grandfathered Person: (A) ceases to own 20% or more of the outstanding Voting Shares; or (B) becomes the Beneficial Owner of more than 1% of the number of outstanding Voting Shares then outstanding in addition to those Voting Shares such Person then Beneficially Owns other than pursuant to a Corporate Acquisition, a Permitted Bid Acquisition, an Exempt Acquisition, a Pro Rata Acquisition, or a Convertible Security Acquisition or any combination thereof.

“Affiliate”, when used to indicate a relationship with a specified Person, means a Person that directly, or indirectly through one or more intermediaries, controls, or is controlled by, or is under common control with, such specified Person and a body corporate shall be deemed to be an Affiliate of another body corporate if one of them is the Subsidiary of the other or if both are Subsidiaries of the same body corporate or if each of them is controlled by the same Person.

“Associate”, when used to indicate a relationship with a specified Person, means (i) any corporation or trust of which such specified Person beneficially owns, directly or indirectly, voting securities carrying more than 10% of the voting rights attached to all voting securities of such corporation or trust for the time being outstanding, (ii) any partner of that specified Person, (iii) any trust or estate in which such specified Person has a substantial beneficial interest or as to which such specified Person serves as trustee or in a similar capacity; (iv) a spouse of such specified Person, (v) any Person of either sex with whom such specified Person is living in a conjugal relationship outside marriage, or (vi) any relative of such specified Person or of a Person mentioned in clauses (iv) or (v) of this definition if that relative has the same residence as the specified Person.

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A Person shall be deemed the “Beneficial Owner” and to have “Beneficial Ownership” of and to “Beneficially Own”:

	(i)	any securities of which such Person or any of such Person’s Affiliates or Associates is the owner at law or in equity;

	(ii)	any securities of which such Person or any of such Person’s Affiliates or Associates has the right to become the owner at law or in equity (A) upon the exercise of any Convertible Securities (other than the Rights), or (B) pursuant to any agreement, arrangement, pledge or understanding, whether or not in writing, in either case where such right is exercisable immediately or within a period of 60 days and whether or not on condition or the happening of any contingency other than:

	(A)	customary agreements with and between underwriters and banking group or selling group members with respect to a distribution of securities pursuant to a prospectus or by way of a private placement;

	(B)	pledges of securities in the ordinary course of the pledgee’s business as a lender granted as security for bona fide indebtedness; and

	(C)	any agreement between the Corporation and any Person or Persons relating to a plan of arrangement, amalgamation or other statutory procedure which is subject to the prior approval of the shareholders;

(iii)

any securities that are Beneficially Owned within the meaning of clauses (i) or (ii) of this definition by any other Person with which such Person is acting jointly or in concert,

provided that a Person shall not be deemed the “Beneficial Owner” of, or to have “Beneficial Ownership” of, or to “Beneficially Own”, any security:

(A)

where: (1) the holder of such security has agreed to deposit or tender such security to a Take-over Bid made by such Person or any of such Person’s Affiliates or Associates or any other Person referred to in clause (iii) of this definition pursuant to a Permitted Lock-up Agreement; or (2) such security has been deposited or tendered pursuant to a Take-over Bid made by such Person or any of such Person’s Affiliates or Associates or made by any other Person acting jointly or in concert with such Person until such deposited or tendered security has been taken up or paid for, whichever shall first occur;

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(B)

where such Person, any Affiliate or Associate of such Person or any other Person acting jointly or in concert with such Person holds such security; provided that:

	(a)	the ordinary business of such Person (the “Investment Manager”) includes the management or administration of investment funds or mutual funds for other Persons and such security is held by the Investment Manager in the ordinary course of such business in the performance of the Investment Manager’s duties for the account of any other Person (a “Client”) including non- discretionary accounts held on behalf of a Client by a broker or dealer or broker-dealer registered under applicable law;

	(b)	such Person (the “Trust Company”) is licensed to carry on the business of a trust company under applicable law and, as such, acts as trustee or administrator or in a similar capacity in relation to the estates of deceased or incompetent Persons (each, an “Estate Account”) or in relation to other accounts (each, an “Other Account”) and holds such security in the ordinary course of and for the purposes of the activities of such Estate Accounts or for such Other Accounts;

	(c)	such Person (the “Statutory Body”) is established by statute for purposes that include, and the ordinary business or activity of such Person includes, the management of investment funds for employee benefit plans, pension plans, insurance plans, or various public bodies and the Statutory Body holds such security in the ordinary course of and for the purposes of its activities as such; or

	(d)	such Person (the “Plan Administrator”) is the administrator or the trustee of one or more pension funds or plans registered under applicable laws and holds such security for the purposes of its activities as such (each, a “Plan”) or is a Plan and such security is Beneficially Owned or held by the Person in the ordinary course of and for the purposes of its activities as such;

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provided, however, that in any of the foregoing cases, the Investment Manager, the Trust Company, the Statutory Body, the Plan Administrator or the Plan, as the case may be: (1) did not acquire and does not Beneficially Own or hold such security for the purpose of or with the effect of changing or influencing the control of the issuer thereof, either alone or acting jointly or in concert with any other person, or in connection with or as a participant in any transaction having that purpose or effect; and (2) is not then making or has not then announced an intention to make a Take-over Bid, alone or by acting jointly or in concert with any other Person, other than an Offer to Acquire Voting Shares or other securities pursuant to a distribution by the Corporation, a Permitted Bid or by means of ordinary market transactions (including pre-arranged trades entered into in the ordinary course of business of such Person) executed through the facilities of a stock exchange or organized over-the-counter market in respect of securities of the Corporation;

	(C)	where such Person is a Client of the same Investment Manager as another Person on whose account the Investment Manager holds such security, or because such Person is an Estate Account or an Other Account of the same Trust Company as another Person on whose account the Trust Company holds such security or because such Person is a Plan with the same Plan Administrator as another Plan on whose account the Plan Administrator holds such security;

	(D)	where such Person is a Client of a Investment Manager and such security is owned at law or in equity by the Investment Manager or because such Person is an Estate Account or an Other Account of a Trust Company and such security is owned at law or in equity by the Trust Company or such Person is a Plan and such security is owned at law or in equity by the Plan Administrator of such Plan; or

	(E)	where such Person is the registered holder of securities as a result of carrying on the business, or acting as a nominee, of a securities depositary.

For purposes of this definition, the percentage of Voting Shares Beneficially Owned by any Person at any time shall be and be deemed to be the product determined by the formula:

where:

A =

the number of votes for the election of all directors generally attached to the Voting Shares Beneficially Owned by such Person at such time; and

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B =

the number of votes for the election of all directors generally attaching to all Voting Shares actually outstanding.

Where any Person is deemed to Beneficially Own unissued Voting Shares, such Voting Shares shall be deemed to be outstanding for the purpose of calculating the percentage of Voting Shares Beneficially Owned by such Person in both the numerator and the denominator, but unissued Voting Shares which another Person may be deemed to Beneficially Own shall not be included in the denominator of the above formula.

“Board of Directors” means the board of directors of the Corporation.

“Business Day” means any day other than a Saturday, Sunday or, unless otherwise specified, a day on which Canadian chartered banks in Vancouver, BC, (or after the Separation Time, the principal office of the Rights Agent in Vancouver, BC) are generally authorized or obligated by law to close.

“Canadian-U.S. Exchange Rate” means, on any date, the inverse of the U.S.-Canadian Exchange Rate.

“Canadian Dollar Equivalent” of any amount which is expressed in United States dollars means, on any date, the Canadian dollar equivalent of such amount determined by reference to the Canadian-U.S. Exchange Rate on such date.

“Close of Business” on any given date, unless otherwise specified herein, means 5:00 p.m. (Vancouver time, unless otherwise specified), on such date provided, however, that if such date is not a Business Day, Close of Business on such date shall mean 5:00 p.m. (Vancouver time, unless otherwise specified) on the next succeeding Business Day.

“Common Shares” means the common shares which the Corporation is authorized to issue, as such common shares may be subdivided, consolidated, reclassified or otherwise changed from time to time, and “common shares” when used with reference to any Person other than the Corporation means the class or classes of shares (or similar equity interests) with the greatest per share voting power entitled to vote generally in the election of all directors of such other Person or the equity securities or other equity interest having power (whether or not exercised) to control or direct the management of such other Person or, if such other Person is a Subsidiary of another Person, of the Person or Persons (other than an individual) which ultimately control such first mentioned other Person.

“Competing Permitted Bid” means a Take-over Bid that:

(i)

is made after a Permitted Bid or another Competing Permitted Bid has been made and prior to the expiry of that Permitted Bid or Competing Permitted Bid;

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	(ii)	satisfies all of the components of the definition of a Permitted Bid other than the requirement set out in clause (ii)(A) of that definition; and

	(iii)	contains, and the taking up and payment for securities tendered or deposited thereunder are subject to, irrevocable and unqualified conditions that no securities will be taken up or paid for pursuant to that Take- over Bid prior to the Close of Business on a date that is not earlier than the minimum number of days such Take-over Bid must remain open for deposits of securities thereunder pursuant to NI 62- 104 after the date of the Take-over Bid constituting the Competing Permitted Bid;

		provided always that a Competing Permitted Bid will cease to be a Competing Permitted Bid at any time when such bid ceases to meet any of the components of this definition and provided that, at such time, any acquisition of securities made pursuant to such Competing Permitted Bid, including any acquisition of securities theretofore made, will cease to be a Permitted Bid Acquisition.

“controlled”: a Person shall be deemed to be “controlled” by another Person or two or more Persons if:

	(i)	securities entitled to vote in the election of directors (including, for Persons other than corporations, the administrators, managers, trustees or other persons performing similar functions in respect of any such Person) carrying more than 50% of the votes for the election of directors are held, directly or indirectly, by or for the benefit of the other Person or Persons; and

	(ii)	the votes carried by such securities are entitled, if exercised, to elect, appoint or designate a majority of the board of directors of such corporation or other Person;

and “controls”, “controlling” and “under common control with” shall be interpreted accordingly.

“Convertible Securities” means at any time any securities (other than the Rights) carrying any exercise, conversion, or exchange right pursuant to which the holder thereof may acquire Voting Shares or other securities which are convertible into or exercisable or exchangeable for Voting Shares.

“Convertible Security Acquisition” means the acquisition of Voting Shares upon the exercise of Convertible Securities received by a Person pursuant to a Permitted Bid Acquisition, an Exempt Acquisition or a Pro-Rata Acquisition.

“Corporate Acquisition” means an acquisition, redemption or cancellation by the Corporation of Voting Shares which, by reducing the number of Voting Shares outstanding, increases the percentage of Voting Shares Beneficially Owned by any Person.

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“Exempt Acquisition” means the acquisition of Voting Shares or Convertible Securities: (i) in respect of which the Board of Directors has waived the application of Section 3.1 pursuant to the provisions of subsections 5.1(b), 5.1(c) or 5.1(d) hereof; (ii) pursuant to a regular dividend reinvestment or other similar share purchase plan of the Corporation made available by it to all holders of Voting Shares of a class or series or Voting Shares where such plan permits the holder to direct that dividends paid in respect of such Voting Shares be applied to the purchase from the Corporation of’ further securities of the Corporation; or (iii) pursuant to a distribution by the Corporation of Voting Shares or Convertible Securities pursuant to a prospectus, provided that such distribution has received the approval of the Board of Directors and all applicable securities regulatory authorities and the Person acquiring such Voting Shares or Convertible Securities does not thereby acquire a greater percentage of Voting Shares or Convertible Securities than that person’s percentage of Voting Shares Beneficially Owned immediately prior to such acquisition; (iv) pursuant to a distribution by the Corporation of Voting Shares or Convertible Securities by way of a private placement or a securities exchange take-over bid or upon the exercise by an individual employee of the Corporation of options to purchase Voting Shares granted under a stock option plan of the Corporation or rights to purchase or acquire securities granted under a share purchase or incentive plan of the Corporation, provided that (a) all necessary stock exchange approvals for such private placement, securities exchange take-over bid, stock option plan or share purchase or incentive plan have been obtained and such private placement, securities exchange take-over bid, stock option plan or share purchase or incentive plan complies with the terms and conditions of such approvals and (b) such Person does not become the Beneficial Owner of more than 25% of the Voting Shares outstanding immediately prior to the distribution, and in making this determination, the Voting Shares to be issued to such Person in the distribution shall be deemed to be held by such Person but shall not be included in the aggregate number of outstanding Voting Shares immediately prior to the distribution; or (v) pursuant to a plan of arrangement, amalgamation or other statutory procedure which has been approved by the Board and the holders of Common Shares at a meeting duly called by the Board and held for such purposes.

“Exercise Price” means, as of any date, the price at which a holder may purchase the securities issuable upon exercise of one whole Right. Until adjustment thereof in accordance with the terms hereof, the Exercise Price shall be an amount equal to three times the Market Price per Common Share, as at the Separation Time, per.

“Expiration Time” means the earliest of (i) the Termination Time, and (ii) the termination of the annual meeting of the shareholders of the Corporation in the year 2020; provided, however, if the resolution referred to in Section 5.18 is approved by Independent Shareholders in accordance with Section 5.18 at or prior to such annual meeting or at or prior to any subsequent annual meeting, “Expiration Time” means the earliest of (i) the Termination Time, and (ii) the termination of the annual meeting of the shareholders of the Corporation in the year that is three years after the year in which such approval occurs.

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“Fiduciary” means, when acting in that capacity, a trust company registered under the trust company legislation of Canada or any province thereof, a trust company organized under the laws of any state of the United States, a portfolio manager registered under the securities legislation of one or more provinces of Canada or an investment adviser registered under the United States Investment Advisers Act of 1940, as amended, or any other securities legislation of the United States or any state of the United States.

“Flip-in Event” means a transaction or event that results in a Person becoming an Acquiring Person; provided, however, that a Flip-in Event shall be deemed to occur at the Close of Business on the tenth day (or such later day as the Board of Directors may determine) after the Stock Acquisition Date.

“Independent Shareholders” means all holders of Common Shares other than (i) any Acquiring Person, (ii) any Offeror, (iii) any Affiliate or Associate of any Acquiring Person or Offeror, (iv) any Person acting jointly or in concert with any Person referred to in clauses (i), (ii) or (iii) above, and (v) any employee benefit plan, deferred profit sharing plan, stock participation plan or trust for the benefit of employees of the Corporation or a wholly-owned Subsidiary of the Corporation, unless the beneficiaries of such plan or trust direct the manner in which such Common Shares are to be voted or direct whether the Common Shares are to be tendered to a Take-over Bid. For greater certainty, persons who are exempt from the definition of “Beneficial Owner” by virtue of any of paragraphs (iii)(A) through (E) of the definition of “Beneficial Owner” shall be “Independent Shareholders” until they cease to be “Independent Shareholders” in accordance with this definition.

“Market Price” per security of any securities on any date means the average of the daily closing prices per security of such securities (determined as described below) on each of the 20 consecutive Trading Days ending on the third Trading Day immediately preceding such date; provided, however, that if an event of a type analogous to any of the events described in Section 2.3 hereof shall have caused the closing prices used to determine the Market Price on any Trading Days not to be fully comparable with the closing price on such date (or, if such date is not a Trading Day, on the immediately preceding Trading Day), each such closing price so used shall be appropriately adjusted in a manner analogous to the applicable adjustment provided for in Section 2.3 hereof in order to make it fully comparable with the closing price on such date (or, if such date is not a Trading Day, on the immediately preceding Trading Day). The closing price per security of any securities on any date shall be:

(i)

the closing board lot sale price on such date or, if such price is not available, the average of the closing bid and asked prices per security, as reported by the principal Canadian stock exchange on which such securities are listed or admitted to trading, or if for any reason neither of such prices is available on such day or the securities are not listed or admitted to trading on a Canadian stock exchange, the closing board lot sale price or, if such price is not available, the average of the closing bid and asked prices, for such securities as reported by such other securities exchange on which such securities are listed or admitted for trading;

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	(ii)	if, for any reason, none of such prices is available on such date or the securities are not listed or admitted to trading on a Canadian stock exchange or other securities exchange, the last sale price, or in case no sale takes place on such date, the average of the high bid and low asked prices for such securities in the over- the-counter market, as quoted by any reporting system then in use (as selected by the Board of Directors); or

	(iii)	if the securities are not listed or admitted to trading as contemplated in clauses (i) or (ii) above, the average of the closing bid and asked prices as furnished by a professional market maker making a market in the securities selected by the Board of Directors;

provided, however, that if on any such date the closing price per security cannot be determined in accordance with the foregoing, the closing price per security of such securities on such date shall mean the fair value per security of such securities on such date as determined by the Board of Directors, after consultation with a nationally or internationally recognized investment banking firm as to the fair value per security of such securities. The Market Price shall be expressed in Canadian dollars and if initially determined in respect of any day forming part of the 20 consecutive Trading Day period in question in United States dollars, such amount shall be translated into Canadian dollars at the Canadian Dollar Equivalent thereof.

“NI 62-104” means National Instrument 62-104 – Take-Over Bids and Issuers Bid adopted by the Canadian securities regulatory authorities.

“Offer to Acquire” includes:

	(i)	an offer to purchase, or a solicitation of an offer to sell, Common Shares or Convertible Securities or a public announcement of an intention to make such an offer or solicitation; and

	(ii)	an acceptance of an offer to sell Common Shares or Convertible Securities, whether or not such offer to sell has been solicited;

or any combination thereof, and the Person accepting an offer to sell shall be deemed to be making an Offer to Acquire to the Person that made the offer to sell.

“Offeror” means a Person who is making or has announced a current intention to make a Take-over Bid (including a Permitted Bid or Competing Permitted Bid but excluding an ordinary market transaction (including a prearranged trade in the ordinary course of business) contemplated in paragraph (ii) of the definition of Beneficial Owner) but only so long as the Take-over Bid so announced or made has not been withdrawn or terminated or has not expired.

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“Permitted Bid” means a Take-over Bid which is made by means of a Take-over Bid circular and which also complies with the following additional provisions:

	(i)	the Take-over Bid is made to all holders of record of Common Shares (other than the Offeror);

	(ii)	the Take-over Bid shall contain, and the take-up and payment for securities tendered or deposited thereunder shall be subject to, irrevocable and unqualified conditions that no securities shall be taken up or paid for pursuant to the Take-over Bid:

	(A)	prior to the Close of Business on a date which is not less than 105 days following the date of the Take-over Bid or such shorter period that a take-over bid (that is not exempt from the requirements of Part 2 of NI 62-104) must remain open for deposits of securities thereunder, in the applicable circumstances at such time, pursuant to NI 62-104; and

	(B)	only if at such date more than 50% of the Common Shares held by Independent Shareholders shall have been deposited or tendered pursuant to the Take-over Bid and not withdrawn;

	(iii)	the Take-over Bid shall contain irrevocable and unqualified provisions that securities may be deposited pursuant to the Take-over Bid at any time during the period described in subparagraph (ii)(A) of this definition and all securities deposited or tendered pursuant to the Take- over Bid may be withdrawn, unless restricted by law, until taken up and paid for; and

	(iv)	the Take-over Bid shall contain an irrevocable and unqualified provision that in the event that the deposit condition set forth in subparagraph (ii)(B) of this definition is satisfied and such Common Shares are taken up by the Offeror, the Offeror will make a public announcement of that fact and the Take-over Bid will remain open for deposits and tenders of securities for not less than ten days from the date of such public announcement;

provided always that a Permitted Bid will cease to be a Permitted Bid at any time when such bid ceases to meet any of the provisions of this definition and any acquisitions of securities made pursuant to such Permitted Bid, including any acquisition of securities theretofore made, will cease to be a Permitted Bid Acquisition.

“Permitted Bid Acquisition” means an acquisition of Voting Shares made pursuant to a Permitted Bid or a Competing Permitted Bid.

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“Permitted Lock-Up Agreement” means an agreement between a Person and one or more holders of Voting Shares or Convertible Securities (each, a “Locked-up Person”) (the terms of which are publicly disclosed and a copy of which is made available to the public, including the Corporation, not later than the date of the Lockup Bid (as defined below) or, if the Lock-up Bid has been made prior to the date on which such agreement is entered into, not later than the date of such agreement and if such date is not a Business Day, the next Business Day) pursuant to which each such Locked-up Person agrees to deposit or tender Voting Shares or Convertible Securities (or both) to a Take-over Bid (the “Lock-up Bid”) made or to be made by the Person, any of such Person’s Affiliates or Associates or any other Person acting jointly or in concert with such Person, provided that:

(i)

the agreement permits any Locked-up Person to terminate its obligation to deposit or tender to or withdraw securities from the Lock-up Bid in order to tender or deposit the securities to another Take-over Bid or support another transaction prior to the securities being taken up and paid for under the Lock-Up Bid:

(A)

where the price or value offered under such Take-Over Bid or transaction to the Locked-up Person exceeds the price or value offered under the Lock-Up Bid; or

(B)

if:

	(1)	the price or value per Common Share offered under the other Take-over Bid or transaction exceeds by as much as or more than a specified amount (the “Specified Amount”) the price or value per Common Share offered under the Lock-up Bid, provided that such Specified Amount is not greater than 7% of the price or value per Common Share offered under the Lock-up Bid; or

	(2)	the number of securities to be purchased under the other Take- over Bid or transaction exceeds by as much as or more than a specified number (the “Specified Number”) the number of securities that the Offeror has offered to purchase under the Lock-up Bid at a price or value per security that is not less than the price or value per security offered under the Lock-up Bid, provided that the Specified Number is not greater than 7% of the number of Voting Shares offered to be purchased under the Lock- up Bid,

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and, for greater clarity, the agreement may contain a right of first refusal or require a period of delay to give such Person an opportunity to match a higher price or value in another Take-over Bid or transaction or other similar limitation on a Locked-up Person’s right to withdraw securities from the agreement, so long as the limitation does not preclude the exercise by the Locked-up Person of the right to withdraw securities in sufficient time to tender to the other Take-over Bid or to participate in and support the other transaction; and

(ii)

no “break-up” fees, “top-up” fees, penalties, expenses or other amounts that exceed in the aggregate the greater of:

	(A)	the cash equivalent of 2.5% of the price or value of the consideration payable under the Lock-up Bid to a Locked-up Person; and

	(B)	50% of the amount by which the price or value of the consideration payable under another Take-over Bid or transaction to a Locked-up Person exceeds the price or value of the consideration that such Locked-up Person would have received under the Lock-up Bid,

shall be payable by a Locked-up Person pursuant to the agreement in the event a Locked-up Person fails to deposit or tender Voting Shares or Convertible Securities to the Lock-up Bid or withdraws Voting Shares or Convertible Securities in order to deposit or tender such Voting Shares or Convertible Securities to the other Take-over Bid or support another transaction.

“Person” includes any individual, firm, partnership, association, trust, body corporate, joint venture, syndicate or other form of unincorporated organization, government and its agencies and instrumentalities or other entity or group (whether or not having legal personality) and any successor (by merger, statutory amalgamation or arrangement, or otherwise) thereof.

“Pro-Rata Acquisition” means the acquisition of Voting Shares or Convertible Securities: (i) as a result of a stock dividend, stock split or other event pursuant to which a Person receives or acquires Voting Shares or Convertible Securities on the same pro-rata basis as all other holders of Voting Shares of the same class or series; (ii) pursuant to a regular dividend reinvestment plan or other plan of the Corporation made available by the Corporation to the holders of Voting Shares where such plan permits the holder to direct that the dividends paid in respect of such Voting Shares be applied to the purchase from the Corporation of further securities of the Corporation; (iii) pursuant to the receipt and/or exercise of rights issued by the Corporation on a pro-rata basis to all holders of a class or series of Voting Shares to subscribe for or purchase Voting Shares or securities convertible into or exchangeable for Voting Shares provided that such rights are acquired directly from the Corporation and not from any other Person; or (iv) pursuant to a distribution by the Corporation of Voting Shares or Convertible Securities (and the conversion or exchange of such securities) made pursuant to a prospectus or by way of a private placement by the Corporation provided that the Person acquiring such Voting Shares or Convertible Securities does not thereby acquire a greater percentage of Voting Shares or Convertible Securities than that Person’s percentage of Voting Shares Beneficially Owned immediately prior to such acquisition.

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“Redemption Price” has the meaning ascribed to that term in subsection 5.1(a) hereof.

“Regular Periodic Cash Dividends” means cash dividends paid at regular intervals in any fiscal year of the Corporation to the extent that such cash dividends do not exceed, in the aggregate, the greatest of:

	(i)	200% of the aggregate amount of cash dividends declared payable by the Corporation on its Common Shares in its immediately preceding fiscal year; and

	(ii)	100% of the aggregate consolidated net income of the Corporation, before extraordinary items, for its immediately preceding fiscal year.

“Rights” means the herein described rights to purchase securities pursuant to the terms and subject to the conditions set forth herein.

“Rights Agent” means Computershare Investor Services Inc., a trust company existing under the federal laws of Canada, and having an office in Toronto, Ontario, and any successor Rights Agent appointed pursuant to the provisions hereof.

“Rights Certificate” has the meaning ascribed to that term in subsection 2.2(c) hereof.

“Rights Register” and “Rights Registrar” shall have the respective meanings ascribed thereto in subsection 2.6(a) hereof.

“Securities Act (British Columbia)” means the Securities Act (British Columbia), as amended, and the regulations thereunder, unless otherwise specified, as the same exist on the date hereof.

“Separation Time” means the Close of Business (Toronto time) on the tenth Business Day after the earliest of:

	(i)	the Stock Acquisition Date;

	(ii)	the date of the commencement of, or first public announcement of the intent of any Person (other than the Corporation or any Subsidiary of the Corporation) to commence, a Take-over Bid (other than a Permitted Bid or a Competing Permitted Bid, as the case may be,); and

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(iii)

the date upon which a Permitted Bid or Competing Permitted Bid ceases to be such;

or such later date as may be determined by the Board of Directors, provided that: (A) if the foregoing results in a Separation Time being prior to the Record Time, the Separation Time shall (subject to any determination of the Board of Directors as aforesaid) be the Record Time; (B) if any such Take-over Bid expires, is cancelled, is terminated or is otherwise withdrawn prior to the Separation Time without securities deposited thereunder being taken up and paid for, then such Take-over Bid shall be deemed, for purposes of this definition, never to have been made; and (C) if the Board of Directors determines, pursuant to Section 5.1, to waive the application of Section 3.1 to a Flip-In Event, then the Separation Time in respect of such Flip-In Event shall be deemed never to have occurred.

“Shares” means shares in the capital of the Corporation.

“Stock Acquisition Date” means the first date of public announcement (which, for purposes of this definition, shall include, without limitation, a report filed pursuant to Section 5.2 of NI 62-104) by the Corporation or an Acquiring Person of facts indicating that a Person has become an Acquiring Person.

“Subsidiary”:

A body corporate is a Subsidiary of another body corporate if:

	(i)	it is controlled by (A) that other, or (B) that other and one or more bodies corporate, each of which is controlled by that other, or (C) two or more bodies corporate, each of which is controlled by that other, or

	(ii)	it is a Subsidiary of a body corporate that is that other’s Subsidiary.

“Take-over Bid” means an Offer to Acquire Common Shares or Convertible Securities (or both), where the securities subject to the Offer to Acquire, together with the Common Shares, if any, into which the securities subject to the Offer to Acquire are convertible and the Voting Shares Beneficially Owned by the Offeror at the date of the Offer to Acquire constitute, in the aggregate, 20% or more of the then outstanding Voting Shares.

“Termination Time” means the time at which the right to exercise Rights shall terminate pursuant to Section 5.1 hereof.

“Trading Day”, when used with respect to any securities, means a day on which the principal securities exchange in Canada on which such securities are listed or admitted to trading is open for the transaction of business, or if the securities are not listed or admitted to trading on any securities exchange in Canada, a Business Day.

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“U.S.-Canadian Exchange Rate” means, on any date:

	(i)	if on such date the Bank of Canada sets an average noon spot rate of exchange for the conversion of one United States dollar into Canadian dollars, such rate; and

	(ii)	in any other case, the rate on such date for the conversion of one United States dollar into Canadian dollars calculated in the manner which shall be determined by the Board of Directors from time to time.

“U.S. Dollar Equivalent” of any amount which is expressed in Canadian dollars means, on any date, the United States dollar equivalent of such amount determined by reference to the U.S.-Canadian Exchange Rate on such date.

“Voting Shares” means, collectively, the Common Shares and any other Shares entitled to vote generally for the election of directors.

1.2	Holder

As used in this Agreement, unless the context otherwise requires, the term “holder” when used with reference to Rights, means the registered holder of such Rights or, prior to the Separation Time, the associated Common Shares.

1.3	Acting Jointly or in Concert

For purposes of this Agreement, it is a question of fact whether a Person is acting jointly or in concert with another Person but a Person shall be deemed to be acting jointly or in concert with every other Person who (i) is an Associate or Affiliate of such first mentioned Person; or (ii) who is a party to any agreement, commitment or understanding, whether formal or informal and whether or not in writing, with the first mentioned Person or any Associate or Affiliate thereof, for the purpose of acquiring or offering to acquire Voting Shares (other than (a) customary agreements with and between underwriters and banking group or selling group members with respect to a distribution of securities by way of prospectus or private placement, or (b) pursuant to a pledge of securities in the ordinary course of business).

1.4	Application of Statutes, Regulations and Rules

Unless the context otherwise requires, any reference to a specific section, subsection, clause or rule of any act or regulation shall be deemed to refer to the same as it may be amended, re-enacted or replaced or, if repealed and there shall be no replacement therefore, to the same as it is in effect on the date of this Agreement.

1.5	Currency

All sums of money which are referred to in this Agreement are expressed in lawful money of Canada, unless otherwise specified.

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1.6	Headings and References

The headings of the Articles and Sections of this Agreement and the Table of Contents are inserted for convenience of reference only and shall not affect the construction or interpretation of this Agreement. All references to Articles, Sections and Exhibits are to articles and sections of and exhibits to, and forming part of, this Agreement. The words “hereto”, “herein”, “hereof”, “hereunder”, “this Agreement”, “the Rights Agreement” and similar expressions refer to this Agreement including the Exhibits, as the same may be amended, modified or supplemented at any time or from time to time.

1.7	Singular, Plural, etc.

In this Agreement, where the context so admits, words importing the singular number include the plural and vice versa and words importing gender include the masculine, feminine and neuter genders.

1.8	Generally Accepted Accounting Principles

Wherever in this Agreement reference is made to generally accepted accounting principles, such reference shall be deemed to be the recommendations at the relevant time of the Chartered Professional Accountants of Canada, or any successor institute, applicable on a consolidated basis (unless otherwise specifically provided herein to be applicable on an unconsolidated basis) as at the date on which a calculation is made or required to be made in accordance with generally accepted accounting principles. Where the character or amount of any asset or liability or item of revenue or expense is required to be determined, or any consolidation or other accounting computation is required to be made for the purpose of this Agreement or any document, such determination or calculation shall, to the extent applicable and except as otherwise specified herein or as otherwise agreed in writing by the parties, be made in accordance with generally accepted accounting principles applied on a consistent basis.

ARTICLE 2

THE RIGHTS

2.1	Issuance and Legend on Common Share Certificates

(a) One Right in respect of each Common Share outstanding at the Record Time and each Common Share that may be issued after the Record Time and prior to the earlier of the Separation Time and the Expiration Time shall be issued in accordance with the terms hereof. Notwithstanding the foregoing, one Right in respect of each Common Share issued after the Record Time upon the exercise of rights pursuant to Convertible Securities outstanding at the Record Time may be issued after the Separation Time but prior to the Expiration Time.

(b) Certificates for Common Shares issued after the Record Time hereof but prior to the Separation Time and the Expiration Time shall evidence one Right for each Common Share represented thereby and shall have impressed, printed, or written thereon or otherwise affixed thereto a legend in substantially the following form:

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“Until the Separation Time (as such term is defined in the Rights Agreement referred to below), this certificate also evidences and entitles the holder hereof to certain Rights as set forth in a Rights Agreement, made as of April 22, 2017, (the “Rights Agreement”), between NexGen Energy Ltd. (the “Corporation”) and Computershare Investor Services Inc., as Rights Agent, the terms of which are hereby incorporated herein by reference and a copy of which is on file and may be inspected during normal business hours at the principal executive offices of the Corporation. Under certain circumstances, as set forth in the Rights Agreement, such Rights may be amended or redeemed, may expire, may become void (if, in certain circumstances, they are “Beneficially Owned” by a “Person” who is or becomes an “Acquiring Person” or any Person acting jointly or in concert with an Acquiring Person or with an “Affiliate” or “Associate” of an “Acquiring Person”, as such terms are defined in the Rights Agreement, or a transferee thereof), or may be evidenced by separate certificates and may no longer be evidenced by this certificate.

The Corporation will mail or arrange for the mailing of a copy of the Rights Agreement to the holder of this certificate without charge as soon as possible after the receipt of a written request therefor.” Certificates representing Common Shares that are issued and outstanding at the Record Time shall evidence one Right for each Common Share evidenced thereby notwithstanding the absence of a legend in substantially the foregoing form until the earlier of the Separation Time and the Expiration Time and where Certificates representing Common Shares have the legend set forth in the Original Agreement such legend shall be deemed to be amended for all purposes to read the same as the legend set forth above.

2.2	Initial Exercise Price: Exercise of Rights: Detachment of Rights

(a) Subject to adjustment as herein set forth, each Right will entitle the holder thereof, after the Separation Time and prior to the Expiration Time, to purchase, for the Exercise Price (or its U.S. Dollar Equivalent on the Business Day immediately preceding the date of exercise of the Right), one Common Share. Notwithstanding any other provision of this Agreement, any Rights held by the Corporation or any of its Subsidiaries shall be void.

(b) Until the Separation Time:

	(i)	the Rights shall not be exercisable and no Right may be exercised; and

	(ii)	for administrative purposes, each Right shall be evidenced by the certificate for the associated Common Share registered in the name of the holder thereof (which certificate shall be deemed to represent a Rights Certificate) and shall be transferable only together with, and shall be transferred by a transfer of, such associated Common Share.

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(c) From and after the Separation Time and prior to the Expiration Time, the Rights: (i) may be exercised and (ii) shall be registered and transferable independent of Common Shares. Promptly following the Separation Time, the Corporation shall prepare and the Rights Agent shall mail to each holder of record of Common Shares as of the Separation Time (other than an Acquiring Person, any other Person whose Rights are or become void pursuant to the provisions of subsection 3.1(b) hereof and, in respect of any Rights Beneficially Owned by such Acquiring Person which are not held of record by such Acquiring Person, the holder of record of such Rights), at such holder’s address as shown in the records of the Corporation (the Corporation hereby agreeing to furnish copies of such records to the Rights Agent for this purpose):

	(i)	a certificate (a “Rights Certificate”) in substantially the form of Exhibit A hereto appropriately completed and registered in such holder’s name, representing the number of Rights held by such holder at the Separation Time and having such marks of identification or designation and such legends, summaries or endorsements printed thereon as the Corporation may deem appropriate and as are not inconsistent with the provisions of this Agreement, or as may be required to comply with any applicable law or with any rule or regulation made pursuant thereto or with any rule or regulation of any stock exchange or quotation system on which the Rights may from time to time be listed or traded, or to conform to usage; and

	(ii)	a disclosure statement describing the Rights;

provided that a Nominee shall be sent the materials provided for in (A) and (B) only in respect of all Common Shares held of record by it which are not Beneficially Owned by an Acquiring Person. In order for the Corporation to determine whether any Person is holding Common Shares which are Beneficially Owned by another Person, the Corporation may require such first person to furnish such information and documentation as the Corporation deems necessary.

(d) Rights may be exercised in whole at any time or in part from time to time on any Business Day (or other day that is not a bank holiday at the place of exercise) after the Separation Time and prior to the Expiration Time by submitting to the Rights Agent at its office in the City of Toronto, Ontario or at any other office of the Rights Agent in the cities specified in the Rights Certificate or designated from time to time for that purpose by the Corporation after consultation with the Rights Agent:

(i)

the Rights Certificate evidencing such Rights with an Election to Exercise (an “Election to Exercise”) substantially in the form attached to the Rights Certificate, appropriately completed and duly executed by the holder or his executors or administrators or other personal representatives or his legal attorney duly appointed by instrument in writing in form and executed in a manner satisfactory to the Rights Agent; and

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(ii)

payment by certified cheque, bank draft, wire transfer or money order payable to the order of the Corporation, of a sum equal to the Exercise Price multiplied by the number of Rights being exercised and a sum sufficient to cover any transfer tax or charge which may be payable in respect of any transfer involved in the issuance, transfer or delivery of Rights Certificates or the issuance, transfer or delivery of certificates for Common Shares in a name other than that of the holder of the Rights being exercised.

(e) Upon receipt of a Rights Certificate accompanied by a duly completed and executed Election to Exercise which does not indicate that Rights evidenced by such Rights Certificate have become void pursuant to subsection 3.1(b) hereof and payment as set forth in subsection 2.2(d) above, the Rights Agent (unless otherwise instructed by the Corporation) shall thereupon promptly:

	(i)	requisition from a transfer agent of the Common Share certificates for the number of Common Shares to be purchased (the Corporation hereby irrevocably authorizing its transfer agent to comply with all such requisitions);

	(ii)	when appropriate, requisition from the Corporation the amount of any funds to be paid in lieu of issuing fractional Common Shares;

	(iii)	after receipt of such certificates, deliver the same to or upon the order of the registered holder of such Rights Certificate, registered in such name or names as may be designated by such holder together with, where applicable, a cheque representing any cash payment in lieu of a fractional interest; and

	(iv)	tender to the Corporation all payments received on exercise of the Rights.

(f) In case the holder of any Rights shall exercise less than all the Rights evidenced by such holder’s Rights Certificate, a new Rights Certificate evidencing (subject to the provisions of subsection 5.5(a) hereof) the Rights remaining unexercised will be issued by the Rights Agent to such holder or to such holder’s duly authorized assigns.

(g) The Corporation covenants and agrees to:

	(i)	take all such action as may be necessary on its part and within its powers to ensure that all Shares delivered upon exercise of Rights shall, at the time of delivery of the certificates evidencing such Shares (subject to payment of the Exercise Price), be duly and validly authorized, executed, issued and delivered and be fully paid and non- assessable;

	(ii)	take all reasonable action as may be necessary on its part and within its power to comply with any applicable requirements of the Business Corporations Act (British Columbia), the Securities Act (British Columbia) or comparable legislation of each of the provinces and territories of Canada, and the rules and regulations thereunder, and any other applicable law, rule or regulation, in connection with the issuance and delivery of Rights Certificates and of any securities of the Corporation upon exercise of Rights;

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	(iii)	use its reasonable efforts to cause all Shares of the Corporation issued upon exercise of Rights to be listed upon the Toronto Stock Exchange or such other stock exchange on which the Shares are listed at that time;

	(iv)	pay when due and payable any and all Canadian federal, provincial transfer taxes (not including any taxes referable to the income or profit of the holder or exercising Person or any liability of the Corporation to withhold tax) and charges which may be payable in respect of the original issuance or delivery of the Rights Certificates or of any Shares of the Corporation issued upon the exercise of Rights, provided that the Corporation shall not be required to pay any transfer tax or charge which may be payable in respect of any transfer involved in the transfer or delivery of Rights Certificates or the issuance or delivery of certificates for securities in a name other than that of the holder of the Rights being transferred or exercised;

	(v)	if necessary, cause to be reserved and kept available out of its authorized and unissued Common Shares the number of Common Shares that, as provided in this Agreement, will from time to time be sufficient to permit the exercise in full of all outstanding Rights; and

	(vi)	after the Separation Time, except as permitted by Section 5.1 or Section 5.4, not take (or permit any Subsidiary to take) any action if at the time such action is taken it is reasonably foreseeable that such action will diminish substantially or otherwise eliminate the benefits intended to be afforded by the Rights.

2.3	Adjustments to Exercise Price, Number of Rights

The Exercise Price, the number and kind of securities subject to purchase upon exercise of each Right and the number of Rights outstanding are subject to adjustment from time to time as provided in this Section 2.3.

(a) If the Corporation shall at any time after the Record Time and prior to the Expiration Time:

(i)

declare or pay a dividend on Common Shares payable in Voting Shares or Convertible Securities otherwise than pursuant to any optional share dividend program;

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	(ii)	subdivide or change the outstanding Common Shares into a greater number of Common Shares;

	(iii)	consolidate or change the outstanding Common Shares into a smaller number of Common Shares; or

	(iv)	issue any Voting Shares or Convertible Securities in respect of, in lieu of, or in exchange for, existing Common Shares in a reclassification or redesignation of Common Shares, an amalgamation or statutory arrangement;

the Exercise Price and the number of Rights outstanding, or, if the payment or effective date therefor shall occur after the Separation Time, the securities purchasable upon exercise of Rights shall be adjusted in the manner set forth below. If an event occurs which would require an adjustment under both this Section 2.3 and subsection 3.1(a), the adjustment provided for in this Section 2.3 shall be in addition to, and shall be made prior to, any adjustment required under subsection 3.1(a) . If the Exercise Price and number of Rights are to be adjusted:

	(x)	the Exercise Price in effect after such adjustment shall be equal to the Exercise Price in effect immediately prior to such adjustment divided by the number of Common Shares (the “Expansion Factor”) that a holder of one Common Share immediately prior to such dividend, subdivision, change, consolidation or issuance would hold immediately thereafter as a result thereof (assuming the exercise of all such exchange or conversion rights, if any); and

	(y)	each Right held prior to such adjustment shall become that number of Rights equal to the Expansion Factor, and the adjusted number of Rights shall be deemed to be distributed among the Common Shares with respect to which the original Rights were associated (if they remain outstanding) and the Common Shares issued in respect of such dividend, subdivision, change, consolidation or issuance, so that each such Voting Share or Convertible Security shall have exactly one Right associated with it.

If the securities purchasable upon exercise of Rights are to be adjusted, the securities purchasable upon exercise of each Right after such adjustment shall be the securities that a holder of the securities purchasable upon exercise of one Right immediately prior to such dividend, subdivision, change, consolidation or issuance would hold immediately thereafter as a result thereof. To the extent that any such rights of exchange, conversion or acquisition are not exercised prior to the expiration thereof, the Exercise Price shall be readjusted to the Exercise Price which would then be in effect based upon the number of Common Shares or Convertible Securities actually issued upon the exercise of such rights. If after the Record Time and prior to the Expiration Time the Corporation shall issue any Shares of its authorized capital other than Common Shares in a transaction of a type described in the first sentence of this subsection 2.3(a), such Shares shall be treated herein as nearly equivalent to Common Shares as may be practicable and appropriate under the circumstances and the Corporation and the Rights Agent agree to amend this Agreement in order to effect such treatment.

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If the Corporation shall at any time after the Record Time and prior to the Separation Time issue any Common Shares otherwise than in a transaction referred to in the preceding paragraph, each such Common Share so issued shall automatically have one new Right associated with it, which Right shall be evidenced by the certificate representing such Common Share.

(b) If the Corporation shall at any time after the Record Time and prior to the Separation Time fix a record date for the making of a distribution to all holders of Common Shares of rights, options or warrants entitling them (for a period expiring within 45 days after such record date) to subscribe for or purchase Common Shares or Convertible Securities at a price per Common Share (or, in the case of a Convertible Security, having a conversion, exchange or exercise price (including the price required to be paid to purchase such Convertible Security) per share) that is less than the Market Price per Common Share on such record date, the Exercise Price shall be adjusted. The Exercise Price in effect after such record date shall equal the Exercise Price in effect immediately prior to such record date multiplied by a fraction, of which the numerator shall be the number of Common Shares outstanding on such record date plus the number of Common Shares which the aggregate offering price of the total number of Common Shares so to be offered (and/or the aggregate initial conversion, exchange or exercise price of the Convertible Securities so to be offered (including the price required to be paid to purchase such Convertible Securities)) would purchase at such Market Price and of which the denominator shall be the number of shares of Common Shares outstanding on such record date plus the number of additional Common Shares to be offered for subscription or purchase (or into which the Convertible Securities so to be offered are initially convertible, exchangeable or exercisable). In case such subscription price may be paid in a form other than cash, the value of such non-cash consideration shall be as determined by the Board of Directors. To the extent that any such rights or warrants are not so issued or, if issued, are not exercised prior to the expiration thereof, the Exercise Price shall be readjusted to the Exercise Price which would then be in effect if such record date had not been fixed or to the Exercise Price which would then be in effect based upon the number of Common Shares or Convertible Securities actually issued upon the exercise of such rights or warrants, as the ease may be. For purposes of this Agreement, the granting of the right to purchase Common Shares (whether previously unissued, treasury shares or otherwise) pursuant to any optional dividend reinvestment plan and/or any Common Share purchase plan providing for the reinvestment of dividends payable on securities of the Corporation and/or employee stock option, stock purchase or other employee benefit plan (so long as such right to purchase is in no case evidenced by the delivery of rights or warrants) shall not be deemed to constitute an issue of rights or warrants by the Corporation; provided, however, that, in the case of any dividend reinvestment plan, the right to purchase Common Shares is at a price per share of not less than 90% of the then current market price per share (determined as provided in such plan) of the Common Shares.

(c) If the Corporation shall at any time after the Record Time and prior to the Separation Time fix a record date for the making of a distribution to all holders of Common Shares of evidences of indebtedness or assets (other than a Regular Periodic Cash Dividend or a dividend paid in Common Shares) or rights or warrants (excluding those referred to in subsection 2.3(a) or 2.3(b)), the Exercise Price shall be adjusted. The Exercise Price in effect after such record date shall, subject to adjustment as provided in the penultimate sentence of subsection 2.3(b), equal the Exercise Price in effect immediately prior to such record date less the fair market value (as determined by the Board of Directors) of the portion of the assets, evidences of indebtedness, rights or warrants so to be distributed applicable to the securities purchasable upon exercise of one Right.

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(d) Each adjustment made pursuant to this Section 2.3 shall be made as of:

	(i)	the payment or effective date for the applicable dividend, subdivision, change, consolidation or issuance in the case of an adjustment made pursuant to subsection 2.3(a) above; and

	(ii)	the record date for the applicable dividend or distribution, in the case of an adjustment made pursuant to subsections 2.3(b) or 2.3(c) above.

(e) Subject to the prior consent of the holders of Common Shares or Rights obtained in accordance with the provisions of subsection 5.4(b) or 5.4(c), as applicable, if the Corporation shall at any time after the Record Time and prior to the Expiration Time issue any Shares (other than Common Shares), or rights or warrants to subscribe for or purchase any such Shares, or Convertible Securities, in a transaction referred to in clause 2.3(a)(i) or 2.3(a)(iv) above and if the Board of Directors determines that the adjustments contemplated by subsections 2.3(a), 2.3(b) and 2.3(d) above in connection with such transaction will not appropriately protect the interests of the holders of Rights, the Board of Directors may determine what other adjustments to the Exercise Price, number of Rights and/or securities purchasable upon exercise of Rights would be appropriate and, notwithstanding such clauses, such adjustments (rather than the adjustments contemplated by subsections 2.3(a), 2.3(b) and 2.3(d) above) shall be made and the Corporation and the Rights Agent shall amend this Agreement as appropriate to provide for such adjustments.

(f) Anything herein to the contrary notwithstanding, no adjustment to the Exercise Price shall be required unless such adjustment would require an increase or decrease of at least 1% in such Exercise Price; provided, however, that any adjustments which by reason of this subsection 2.3(f) are not required to be made shall be carried forward and taken into account in any subsequent adjustment. Each adjustment made pursuant to this Section 2.3 shall be calculated to the nearest cent or to the nearest one ten-thousandth of a Common Share or Right, as the case may be.

(g) All Rights originally issued by the Corporation subsequent to any adjustment made to an Exercise Price hereunder shall evidence the right to purchase, at the adjusted Exercise Price, the number of Common Shares purchasable from time to time hereunder upon exercise of the Rights, all subject to further adjustment as provided herein.

(h) Unless the Corporation shall have exercised its election as provided in subsection 2.3(i), upon each adjustment of an Exercise Price as a result of the calculations made in subsections 2.3(b) and 2.3(c), each Right outstanding immediately prior to the making of such adjustment shall thereafter evidence the right to purchase, at the adjusted Exercise Price, that number of Common Shares (calculated to the nearest one ten-thousandth) obtained by:

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	(i)	multiplying (A) the number of Common Shares covered by a Right immediately prior to this adjustment, by (B) the Exercise Price in effect immediately prior to such adjustment of the Exercise Price; and

	(ii)	dividing the product so obtained by the Exercise Price in effect immediately after such adjustment of the Exercise Price.

(i) The Corporation may elect on or after the date of any adjustment of an Exercise Price to adjust the number of Rights, in lieu of any adjustment in the number of Common Shares purchasable upon the exercise of a Right. Each of the Rights outstanding after the adjustment in the number of Rights shall be exercisable for the number of Common Shares for which a Right was exercisable immediately prior to such adjustment. Each Right held of record immediately prior to such adjustment of the number of Rights shall become the number of Rights (calculated to the nearest one ten-thousandth) obtained by dividing the Exercise Price in effect immediately prior to the adjustment of the Exercise Price by the Exercise Price in effect immediately after adjustment of the Exercise Price. The Corporation shall make a public announcement of its election to adjust the number of Rights, indicating the record date for the adjustment and, if known at the time, the amount of the adjustment to be made. This record date may be the date on which the Exercise Price is adjusted or any date thereafter, but, if the Rights Certificates have been issued, shall be at least 10 calendar days after the date of the public announcement. If Rights Certificates have been issued, upon each adjustment of the number of Rights pursuant to this subsection 2.3(j), the Corporation shall, as promptly as practicable, cause to be distributed to holders of record of Rights Certificates on such record date, Rights Certificates evidencing the additional Rights to which such holder shall be entitled as a result of such adjustment, or, at the option of the Corporation, shall cause to be distributed to such holders of record in substitution or replacement for the Rights Certificates held by such holders prior to the date of adjustment, and upon surrender thereof, if required by the Corporation, new Rights Certificates evidencing all the Rights to which such holders shall be entitled after such adjustment. Rights Certificates so to be distributed shall be issued, executed and countersigned in the manner provided for herein and may bear, at the option of the Corporation, the adjusted Exercise Price and shall be registered in the names of the holders of record of Rights Certificates on the record date specified in the public announcement.

(j) Irrespective of any adjustment or change in the securities purchasable upon exercise of the Rights, the Rights Certificates theretofore and thereafter issued may continue to express the securities so purchasable which were expressed in the initial Rights Certificates issued hereunder.

(k) If, as a result of an adjustment made pursuant to Section 3.1, the holder of any Right thereafter exercised shall become entitled to receive any securities other than Common Shares, thereafter the number of such other securities so receivable upon exercise of any Right and the applicable Exercise Price thereof shall be subject to adjustment from time to time in a manner and on terms as nearly equivalent as may be practicable to the provisions with respect to the Common Shares contained in the foregoing subsections of this Section 2.3 and the provisions of this Agreement with respect to the Common Shares shall apply on like terms to any such other securities.

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(l) In any case in which this Section 2.3 shall require that any adjustment in the Exercise Price be made effective as of a record date for a specified event, the Corporation may elect to defer until the occurrence of such event the issuance to the holder of any Right exercised after such record date of the number of Common Shares and other securities of the Corporation, if any, issuable upon such exercise over and above the number of Common Shares and other securities of the Corporation, if any, issuable upon such exercise on the basis of the Exercise Price in effect prior to such adjustment; provided, however, that the Corporation shall deliver to such holder an appropriate instrument evidencing such holder’s right to receive such additional Common Shares or other securities upon the occurrence of the event requiring such adjustment.

(m) Notwithstanding anything in this Section 2.3 to the contrary, the Corporation shall be entitled to make such reductions in the Exercise Price, in addition to those adjustments expressly required by this Section 2.3, as and to the extent that, in their judgment, the Board of Directors determines advisable in order that any (i) subdivision or consolidation of the Common Shares, (ii) issuance wholly for cash of any Common Shares at less than the applicable Market Price, (iii) issuance wholly for cash of any Common Shares or securities that by their terms are exchangeable for or convertible into or give a right to acquire Common Shares, (iv) stock dividends, or (v) issuance of rights, options or warrants referred to in this Section 2.3, hereafter made by the Corporation to holders of its Common Shares, and subject to applicable taxation laws, shall not be taxable to such shareholders.

(n) Whenever an adjustment to the Exercise Price or a change in the securities purchasable upon the exercise of Rights is made pursuant to this Section 2.3, the Corporation shall promptly:

	(i)	prepare a certificate setting forth such adjustment and a brief statement of the facts accounting for such adjustment;

	(ii)	file with the Rights Agent and with each transfer agent for the Common

Shares, a copy of such certificate; and

(iii)

cause notice of the particulars of such adjustment or change to be given to the holders of the Rights.

Failure to file such certificate or to cause such notice to be given as aforesaid, or any defect therein, shall not affect the validity of any such adjustment or change.

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2.4	Date on Which Exercise is Effective

Each Person in whose name any certificate for Shares is issued upon the exercise of Rights shall for all purposes be deemed to have become the holder of record of the Shares represented thereby on, and such certificate shall be dated, the date upon which the Rights Certificate evidencing such Rights was duly submitted (together with a duly completed Election to Exercise) and payment of the Exercise Price for such Rights (and any applicable transfer taxes and other charges payable by the exercising holder hereunder) was made; provided, however, that if the date of such exercise is a date upon which the relevant share transfer books of the Corporation are closed, such Person shall be deemed to have become the recorded holder of such Shares on, and such certificate shall be dated, the next succeeding Business Day on which the said share transfer books of the Corporation are open.

2.5	Execution, Authentication, Delivery and Dating of Rights Certificates

(a) The Rights Certificates shall be executed on behalf of the Corporation by any two of its Chairman, President and Chief Executive Officer, its Chief Financial Officer or its Corporate Secretary. The Rights Certificates may be signed by any of these officers manually, or by facsimile or any other electronic means.

(b) Rights Certificates bearing the manual or facsimile signatures of individuals who were at any time the proper officers of the Corporation shall bind the Corporation, notwithstanding that such individuals or any of them have ceased to hold such offices prior to the countersignature and delivery of such Rights Certificates.

(c) Promptly after the Corporation learns of the Separation Time, the Corporation shall notify the Rights Agent of such Separation Time and shall deliver Rights Certificates executed by the Corporation to the Rights Agent for countersignature, and the Rights Agent shall manually countersign (in a manner satisfactory to the Corporation) and deliver such Rights Certificates to the holders of the Rights pursuant to subsection 2.2(c) hereof. No Rights Certificate shall be valid for any purpose until countersigned by the Rights Agent in the manner described above.

(d) Each Rights Certificate shall be dated the date of countersignature thereof.

2.6	Registration, Registration of Transfer and Exchange

(a) Following the Separation Time, the Corporation shall cause to be kept a register (the “Rights Register”) in which, subject to such reasonable regulations as it may prescribe, the Corporation shall provide for the registration and transfer of Rights. The Rights Agent is hereby appointed “Rights Registrar” for the purpose of maintaining the Rights Register for the Corporation and registering Rights and transfers of Rights as herein provided. If the Rights Agent shall cease to be the Rights Registrar, the Rights Agent shall have the right to examine the Rights Register at all reasonable times.

After the Separation Time and prior to the Expiration Time, upon surrender for registration of transfer or exchange of any Rights Certificate, and subject to the provisions of subsection 2.6(c) below, the Corporation shall execute, and the Rights Agent shall countersign and deliver, in the name of the holder or the designated transferee or transferees, as required pursuant to the holder’s instructions, one or more new Rights Certificates evidencing the same aggregate number of Rights as did the Rights Certificate so surrendered.

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(b) All Rights issued upon any registration of transfer or exchange of Rights Certificates shall be the valid obligations of the Corporation, and such Rights shall be entitled to the same benefits under this Agreement as the Rights surrendered upon such registration of transfer or exchange.

(c) Every Rights Certificate surrendered for registration of transfer or exchange shall have the form of transfer thereon duly completed and endorsed, or be accompanied by a written instrument of transfer in form satisfactory to the Corporation or the Rights Agent, as the case may be, duly executed by the holder thereof or such holder’s attorney duly authorized in writing.

As a condition to the issuance of any new Rights Certificate under this Section 2.6, the Corporation may require the payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and other expenses (including the reasonable fees and expenses of its Rights Agent) connected therewith.

(d) The Corporation shall not be required to register the transfer or exchange of any Rights after the Rights have been terminated pursuant to the provisions of this Agreement.

2.7	Mutilated, Destroyed, Lost and Stolen Rights Certificates

(a) If any mutilated Rights Certificate is surrendered to the Rights Agent prior to the Expiration Time, the Corporation shall execute and the Rights Agent shall countersign and deliver a new Rights Certificate evidencing the same number of Rights as did the Rights Certificate so surrendered.

(b) If there shall be delivered to the Corporation and the Rights Agent prior to the Expiration Time (i) evidence to their satisfaction of the destruction, loss or theft of any Rights Certificate and (ii) such surety bond and indemnity as may be required by them to save each of them and their respective agents harmless, then, in the absence of notice to the Corporation or the Rights Agent that such Rights Certificate has been acquired by a bona fide purchaser, the Corporation shall execute and upon the Corporation’s request, the Rights Agent shall countersign and deliver, in lieu of any such destroyed, lost or stolen Rights Certificate, a new Rights Certificate evidencing the same number of Rights as did the Rights Certificate so destroyed, lost or stolen.

(c) As a condition to the issuance of any new Rights Certificate under this Section 2.7, the Corporation may require the payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the reasonable fees and expenses of the Rights Agent) connected therewith.

(d) Every new Rights Certificate issued pursuant to this Section 2.7 in lieu of any destroyed, lost or stolen Rights Certificate shall evidence an original additional contractual obligation of the Corporation, whether or not the destroyed, lost or stolen Rights Certificate shall be at any time enforceable by anyone, and shall be entitled to all the benefits of this Agreement equally and proportionately with any and all other Rights duly issued hereunder.

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2.8	Persons Deemed Owners

Prior to due presentment of a Rights Certificate (or, prior to the Separation Time, the associated Common Share certificate) for registration of transfer, the Corporation, the Rights Agent and any agent of the Corporation or the Rights Agent may deem and treat the Person in whose name such Rights Certificate (or, prior to the Separation Time, such Common Share certificate) is registered as the absolute owner thereof and of the Rights evidenced thereby for all purposes whatsoever. As used in this Agreement, unless the context otherwise requires, the term “holder” of any Rights means the registered holder of such Rights (or, prior to the Separation Time, the associated Common Shares).

2.9	Delivery and Cancellation of Certificates

All Rights Certificates surrendered upon exercise or for redemption, registration of transfer or exchange shall, if surrendered to any Person other than the Rights Agent, be delivered to the Rights Agent and, in any case, shall be promptly cancelled by the Rights Agent. The Corporation may at any time deliver to the Rights Agent for cancellation any Rights Certificates previously countersigned and delivered hereunder which the Corporation may have acquired in any manner whatsoever, and all Rights Certificates so delivered shall be promptly cancelled by the Rights Agent. No Rights Certificates shall be countersigned in lieu of or in exchange for any Rights Certificates cancelled as provided in this Section 2.9, except as expressly permitted by this Agreement. The Rights Agent shall destroy all cancelled Rights Certificates and deliver a certificate of destruction to the Corporation.

2.10	Agreement of Rights Holders

Every holder of Rights by accepting the same consents and agrees with the Corporation and the Rights Agent and with every other holder of Rights that:

(a) prior to the Separation Time, each Right shall be transferable only together with, and shall be transferred by a transfer of, the associated Common Share;

(b) after the Separation Time, the Rights Certificates shall be transferable only on the Rights Register as provided herein;

(c) prior to due presentment of a Rights Certificate (or, prior to the Separation Time, the associated Common Share certificate) for registration of transfer, the Corporation, the Rights Agent and any agent of the Corporation or the Rights Agent may deem and treat the Person in whose name the Rights Certificate (or, prior to the Separation Time, the associated Common Share certificate) is registered as the absolute owner thereof and of the Rights evidenced thereby (notwithstanding any notations of ownership or writing on such Rights Certificate or the associated Common Share certificate made by anyone other than the Corporation or the Rights Agent) for all purposes whatsoever, and neither the Corporation nor the Rights Agent shall be affected by any notice to the contrary;

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(d) such holder has waived all rights to receive any fractional Right or fractional Common Share upon exercise of a Right;

(e) such holder is otherwise bound by and subject to the provisions of this Agreement, as amended from time to time in accordance with the terms hereof in respect of all Rights held;

(f) this Agreement may be supplemented or amended from time to time pursuant to the last sentence of the penultimate paragraph of subsection 2.3(a) hereof upon the sole authority of the Board of Directors without the approval of any holder of Rights; and

(g) notwithstanding anything in this Agreement to the contrary, neither the Corporation nor the Rights Agent shall have any liability to any holder of a Right or any other Person as a result of its inability to perform any of its obligations under this Agreement by reason of any preliminary or permanent injunction or other order, decree or ruling by a court of competent jurisdiction or by a governmental, regulatory or administrative agency or commission, or any statute, rule, regulation or executive order promulgated or enacted by any governmental authority, prohibiting or otherwise restraining performance of such obligation.

ARTICLE 3

ADJUSTMENTS TO THE RIGHTS IN THE EVENT OF CERTAIN
TRANSACTIONS

3.1	Flip-in Event

(a) Subject to the provisions of Section 2.2 and Section 5.1 hereof and except as provided below, if prior to the Expiration Time a Flip-in Event shall occur, each Right shall thereafter constitute, effective at the Close of Business on the tenth Business Day after the relevant Stock Acquisition Date, the right to purchase from the Corporation, upon exercise thereof in accordance with the terms hereof, that number of Common Shares of the Corporation having an aggregate Market Price on the date of consummation or occurrence of such Flip-in Event equal to twice the Exercise Price for an amount in cash equal to the Exercise Price (such right to be appropriately adjusted in a manner analogous to the applicable adjustment provided for in Section 2.3 hereof in the event that, after such date of consummation or occurrence, an event of a type analogous to any of the events described in Section 2.3 hereof shall have occurred with respect to such Common Shares).

(b) Notwithstanding anything in this Agreement to the contrary, upon the occurrence of a Flip-in Event, any Rights that are or were Beneficially Owned on or after the earlier of the Separation Time and the Stock Acquisition Date by:

(i)

an Acquiring Person (or any Affiliate or Associate of an Acquiring Person or any Person acting jointly or in concert with an Acquiring Person or with an Affiliate or Associate of an Acquiring Person); or

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(ii)

a direct or indirect transferee of, or other successor in title to, such Rights (a “Transferee”), who becomes a Transferee concurrently with or subsequent to the Acquiring Person becoming an Acquiring Person, in a transfer, whether or not for consideration, that the Board of Directors has determined is part of a plan, understanding or scheme of an Acquiring Person (or an Affiliate or Associate of an Acquiring Person or any Person acting jointly or in concert with an Acquiring Person or an Affiliate or Associate of an Acquiring Person) that has the purpose or effect of avoiding the provisions of this subsection 3.1(b) applicable in the circumstances contemplated in clause (i) hereof;

shall thereupon become and be void and any holder of such Rights (including any Transferee) shall thereafter have no rights whatsoever with respect to such Rights, whether under any provision of this Agreement or otherwise. The holder of any Rights represented by a Rights Certificate which is submitted to the Rights Agent, or any Co-Rights Agent (as hereinafter defined), upon exercise or for registration of transfer or exchange which does not contain the necessary certifications set forth in the Rights Certificate establishing that such Rights are not void under this subsection 3.1(b) shall be deemed to be an Acquiring Person for the purposes of this subsection 3.1(b) and such rights shall be null and void.

(c) Any Rights Certificate that represents Rights Beneficially Owned by a Person described in either clauses 3.1(b)(i) or 3.1(b)(ii) of subsection 3.1(b) hereof or transferred to any nominee of any such Person, and any Rights Certificate issued upon the transfer, exchange or replacement of any other Rights Certificate referred to in this sentence shall contain the following legend:

“The Rights represented by this Rights Certificate were issued to a Person who was an Acquiring Person or an Affiliate or an Associate of an Acquiring Person (as such terms are defined in the Rights Agreement) or was acting jointly or in concert with any of them. This Rights Certificate and the Rights represented hereby shall become void in the circumstances specified in subsection 3.1(b) of the Rights Agreement.”

provided, however, that the Rights Agent shall not be under any responsibility to ascertain the existence of facts that would require the imposition of such legend but shall be required to impose such legend only if instructed to do so by the Corporation or if a holder fails to certify upon transfer or exchange in the space provided on the Rights Certificate that such holder is not an Acquiring Person or an Affiliate or Associate thereof or acting jointly or in concert with any of them. The issuance of a Rights Certificate without the legend referred to in this subsection shall be of no effect on the provisions of this subsection.

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ARTICLE 4

THE RIGHTS AGENT

4.1	General

(a) The Corporation hereby appoints the Rights Agent to act as agent for the Corporation and the holders of Rights in accordance with the terms and conditions hereof, and the Rights Agent hereby accepts such appointment. The Corporation may from time to time appoint one or more co-rights agents (each, a “Co-Rights Agent”) as it may deem necessary or desirable after consultation with the Rights Agent. In such event, the respective duties of the Rights Agent and any Co-Rights Agent shall be as the Corporation may determine with the written approval of the Rights Agent. The Corporation agrees to pay to the Rights Agent reasonable compensation for all services rendered by it hereunder and, from time to time on demand of the Rights Agent, its reasonable expenses and counsel fees and other disbursements reasonably incurred in the administration and execution of this Agreement and the exercise and performance of its duties hereunder. The Corporation also agrees to indemnify the Rights Agent, its officers, directors, employees and agents for, and to hold them harmless against, any loss, liability, or expense, incurred without gross negligence, bad faith or wilful misconduct on the part of the Rights Agent, its officers, directors, employees or agents, for anything done or omitted by them in connection with the acceptance and performance of this Agreement, including legal costs and expenses, which right to indemnification shall survive the termination of this Agreement or the resignation or removal of the Rights Agent.

(b) The Rights Agent shall be protected from, and shall incur no liability for or in respect of, any action taken, suffered or omitted by it in connection with its performance of this Agreement in reliance upon any certificate for Voting Shares, Rights Certificate, certificate for other securities of the Corporation, instrument of assignment or transfer, power of attorney, endorsement, affidavit, letter, notice, direction, consent, certificate, opinion, statement or other paper or document believed by it to be genuine and to be signed, executed and, where necessary, verified or acknowledged, by the proper Person or Persons.

(c) The Corporation shall inform the Rights Agent in a reasonably timely manner of events which may materially affect the administration of this Agreement by the Rights Agent and, at any time upon written request, shall provide to the Rights Agent an incumbency certificate certifying the then current officers of the Corporation.

(d) Notwithstanding any other provision of this Agreement, and whether such losses or damages are foreseeable or unforeseeable, the Rights Agent shall not be liable under any circumstance whatsoever for any (i) breach by any other party of securities law or other rule of any securities regulatory authority, (ii) lost profits or (iii) special, indirect, incidental, consequential, exemplary, aggravated or punitive losses or damages.

(e) Notwithstanding any other provisions of this Agreement, any liability of the Rights Agent shall be limited, in the aggregate, to the amount of fees paid by the Company to the Rights Agent under this Agreement in the twelve (12) months immediately prior to the Rights Agent receiving the first notice of claim.

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4.2	Merger or Amalgamation or Change of Name of Rights Agent

(a) Any body corporate into which the Rights Agent or any successor Rights Agent may be merged or amalgamated with or into, or any body corporate succeeding to the securityholder services business of the Rights Agent or any successor Rights Agent shall be the successor to the Rights Agent under this Agreement without the execution or filing of any paper or any further act on the part of any of the parties hereto, provided that such body corporate would be eligible for appointment as a successor Rights Agent under the provisions of Section 4.4 hereof. In case at the time such successor Rights Agent succeeds to the agency created by this Agreement any of the Rights Certificates have been countersigned but not delivered, any such successor Rights Agent may adopt the countersignature of the predecessor Rights Agent and deliver such Rights Certificates so countersigned; and in case at that time any of the Rights Certificates have not been countersigned, any successor Rights Agent may countersign such Rights Certificates either in the name of the predecessor Rights Agent or in the name of the successor Rights Agent; and in all such cases such Rights Certificates shall have the full force provided in the Rights Certificates and in this Agreement.

(b) In case at any time the name of the Rights Agent is changed and at such time any of the Rights Certificates shall have been countersigned but not delivered, the Rights Agent may adopt the countersignature under its prior name and deliver Rights Certificates so countersigned; and in case at that time any of the Rights Certificates shall not have been countersigned, the Rights Agent may countersign such Rights Certificates either in its prior name or in its changed name; and in all such cases such Rights Certificates shall have the full force provided in the Rights Certificates and in this Agreement.

4.3	Duties of Rights Agent

The Rights Agent undertakes the duties and obligations imposed by this Agreement upon the following terms and conditions, by all of which the Corporation and the holders of Rights Certificates, by their acceptance thereof, shall be bound:

(a) The Rights Agent may retain and consult with legal counsel (who may be legal counsel for the Corporation), and the opinion of such counsel will be full and complete authorization and protection to the Rights Agent as to any action taken or omitted by it in good faith and in accordance with such opinion, and the Rights Agent, at the Corporation’s expense, may also retain and consult with such other experts or advisors as the Rights Agent shall consider necessary or appropriate, acting reasonably, to properly carry out the duties and obligations imposed under this Agreement and the Rights Agent will be entitled to act and rely in good faith on the advice of any such expert or advisor.

(b) Whenever in the performance of its duties under this Agreement the Rights Agent deems it necessary or desirable that any fact or matter be proved or established by the Corporation prior to taking or suffering any action or refraining from taking any action hereunder, such fact or matter (unless other evidence in respect thereof be herein specifically prescribed) may be deemed to be conclusively proved and established by a certificate signed by an individual believed by the Rights Agent to be the Chairman, the Chief Executive Officer, the Chief Financial Officer or any Vice-President and by the Secretary or any Assistant Secretary of the Corporation and delivered to the Rights Agent; and such certificate shall be full authorization to the Rights Agent for any action taken, omitted or suffered in good faith by it under the provisions of this Agreement in reliance upon such certificate.

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(c) Nothing in this Agreement shall be construed as relieving the Rights Agent from liability hereunder for its own gross negligence, bad faith or wilful misconduct.

(d) The Rights Agent shall not be liable for or by reason of any of the statements of fact or recitals contained in this Agreement or in the certificates for Shares or the Rights Certificates (except its countersignature thereof) or be required to verify the same, but all such statements and recitals are and will be deemed to have been made by the Corporation only.

(e) The Rights Agent shall not be under any responsibility in respect of the validity of this Agreement or the execution and delivery hereof (except the due authorization, execution and delivery hereof by the Rights Agent) or in respect of the validity or execution of any Share certificate or Rights Certificate (except its countersignature thereof); nor will it be responsible for any breach by the Corporation of any covenant or condition contained in this Agreement or in any Rights Certificate; nor will it be responsible for any change in the exercisability of the Rights (including the Rights becoming void pursuant to subsection 3.1(b) hereof) or any adjustment required under the provisions of Section 2.3 hereof or responsible for the manner, method or amount of any such adjustment or the ascertaining of the existence of facts that would require any such adjustment (except with respect to the exercise of Rights after receipt of the certificate contemplated by Section 2.3 hereof describing any such adjustment); nor will it by any act hereunder be deemed to make any representation or warranty as to the authorization or reservation of any Shares to be issued pursuant to this Agreement or any Rights or as to whether any Shares shall, when issued, be duly and validly authorized, executed, issued and delivered and be fully paid and non-assessable.

(f) The Corporation agrees that it will perform, execute, acknowledge and deliver or cause to be performed, executed, acknowledged and delivered all such further and other acts, instruments and assurances as may reasonably be required by the Rights Agent for the carrying out or performing by the Rights Agent of the provisions of this Agreement.

(g) The Rights Agent is hereby authorized to rely upon and directed to accept written instructions with respect to the performance of its duties hereunder from any individual believed by the Rights Agent to be the Chairman, the Chief Executive Officer, the Chief Financial Officer or any Vice-President or the Secretary or any Assistant Secretary of the Corporation, and to apply to such individuals for advice or instructions in connection with its duties, and it shall not be liable for any action taken, omitted or suffered by it in good faith in accordance with instructions of any such individual. It is understood that instructions to the Rights Agent shall, except where circumstances make it impractical or the Rights Agent otherwise agrees, be given in writing and, where not in writing, such instructions shall be confirmed in writing as soon as reasonably practicable after the giving of such instructions.

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(h) The Rights Agent and any shareholder, director, officer or employee of the Rights Agent may buy, sell or deal in Shares, Rights or other securities of the Corporation or become pecuniarily interested in any transaction in which the Corporation may be interested, or contract with or lend money to the Corporation or otherwise act as fully and freely as though it were not Rights Agent under this Agreement. Nothing herein shall preclude the Rights Agent from acting in any other capacity for the Corporation or for any other legal entity.

(i) The Rights Agent may execute and exercise any of the rights or powers hereby vested in it or perform any duty hereunder either itself or by or through its attorneys or agents, and the Rights Agent shall not be answerable or accountable for any act, default, neglect or misconduct of any such attorneys or agents or for any loss to the Corporation resulting from any such act, omission, default, neglect or misconduct, provided reasonable care was exercised in the selection and continued employment thereof.

4.4	Change of Rights Agent

The Rights Agent may resign and be discharged from its duties under this Agreement upon 60 days’ notice (or such lesser notice as is acceptable to the Corporation) in writing delivered or mailed to the Corporation and to each transfer agent of Shares by first class mail, and mailed or delivered to the holders of the Rights in accordance with Section 5.9 hereof. The Corporation may remove the Rights Agent upon 30 days’ notice in writing, mailed or delivered to the Rights Agent and to each transfer agent of the Shares by first class mail, and mailed to the holders of the Rights in accordance with Section 5.9 hereof. If the Rights Agent should resign or be removed or otherwise become incapable of acting, the Corporation shall appoint a successor to the Rights Agent. If the Corporation fails to make such appointment within a period of 30 days after such removal or after it has been notified in writing of such resignation or incapacity by the resigning or incapacitated Rights Agent or by the holder of any Rights (which holder shall, with such notice, submit such holder’s Rights Certificate for inspection by the Corporation), then the holder of any Rights may apply, at the Corporation’s expense, to any court of competent jurisdiction for the appointment of a new Rights Agent. Any successor Rights Agent, whether appointed by the Corporation or by such a court, shall be a body corporate incorporated under the laws of Canada or a province thereof authorized to carry on the business of a trust company in the Province of British Columbia. After appointment, the successor Rights Agent shall be vested with the same powers, rights, duties and responsibilities as if it had been originally named as Rights Agent without further act or deed; but the predecessor Rights Agent upon receipt of all fees and expenses outstanding to the predecessor Rights Agent by the Corporation shall deliver and transfer to the successor Rights Agent any property at the time held by it hereunder, and execute and deliver any further assurance, conveyance, act or deed necessary for the purpose. Not later than the effective date of any such appointment, the Corporation shall file notice thereof in writing with the predecessor Rights Agent and each transfer agent of the Shares, and mail a notice thereof in writing to the holders of the Rights. Failure to give any notice provided for in this Section 4.4, however, or any defect therein, shall not affect the legality or validity of the resignation or removal of the Rights Agent or the appointment of the successor Rights Agent, as the case may be.

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4.5	Compliance with Money Laundering Legislation

The Rights Agent shall retain the right not to act and shall not be liable for refusing to act if, due to a lack of information or for any other reason whatsoever, the Rights Agent reasonably determines that such an act might cause it to be in non-compliance with any applicable anti- money laundering or anti-terrorist legislation, regulation or guideline. Further, should the Rights Agent reasonably determine at any time that its acting under this Agreement has resulted in it being in non-compliance with any applicable anti-money laundering or anti-terrorist legislation, regulation or guideline, then it shall have the right to resign on 10 Business Days’ written notice to the Company, provided: (i) that the Rights Agent’s written notice shall describe the circumstances of such non-compliance; and (ii) that if such circumstances are rectified to the Rights Agent’s satisfaction within such 10 Business Day period, then such resignation shall not be effective.

4.6	Privacy Provision

The parties acknowledge that federal and/or provincial legislation that addresses the protection of individual’s personal information (collectively, “Privacy Laws”) applies to obligations and activities under this Agreement. Despite any other provision of this Agreement, neither party will take or direct any action that would contravene, or cause the other to contravene, applicable Privacy Laws. The Company will, prior to transferring or causing to be transferred personal information to the Rights Agent, obtain and retain required consents of the relevant individuals to the collection, use and disclosure of their personal information, or will have determined that such consents either have previously been given upon which the parties can rely or are not required under the Privacy Laws. The Rights Agent will use commercially reasonable efforts to ensure that its services hereunder comply with Privacy Laws.

ARTICLE 5

MISCELLANEOUS

5.1	Redemption and Waiver

The Corporation shall give prompt written notice to the Rights Agent of any waiver of the application of Section 3.1 made by the Board of Directors under this Section 5.1. In addition,

(a) Subject to the prior consent of the holders of Common Shares or Rights obtained as set forth in Section 5.4(b) or Section 5.4(c), the Board of Directors, at any time prior to the occurrence of a Flip-in Event as to which the application of Section 3.1 has not been waived pursuant to this Section 5.1, may elect to redeem all but not less than all of the then outstanding Rights at a redemption price of $0.00001 per Right appropriately adjusted in a manner analogous to the applicable adjustment to the Exercise Price provided for in Section 2.3 hereof if an event analogous to any of the events described in Section 2.3 shall have occurred (such redemption price being herein referred to as the “Redemption Price”).

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(b) Subject to the prior consent of the holders of Common Shares obtained as set forth in Section 5.4(b), the Board of Directors may, at any time prior to the occurrence of a Flip-in Event as to which the application of Section 3.1 has not been waived pursuant to this Section 5.1, waive the application of Section 3.1 to such Flip-in Event if such Flip-in Event would occur by reason of an acquisition of Common Shares otherwise than pursuant to a Take- over Bid made by means of a Take-over Bid circular to all holders of record of Common Shares and otherwise than in the circumstances set forth in subsection 5.1(d) .

(c) Prior to the occurrence of a Flip-in Event as to which the application of Section 3.1 has not been waived pursuant to this Section 5.1, upon written notice to the Rights Agent, the Board of Directors may waive the application of Section 3.1 to such Flip-in Event but only if such Flip-in Event occurs as a result of a Take- over Bid made by way of a Take-over Bid circular sent to all holders of record of Common Shares; provided, however, that if the Board of Directors waives the application of Section 3.1 to a particular Flip-in Event, the Board of Directors shall be deemed to have waived the application of Section 3.1 to any other Flip-in Event occurring by reason of any Take-over Bid which is made by means of a Take-over Bid circular to all holders of record of Common Shares which is made prior to the expiry time of any Take-over Bid in respect of which a waiver is, or is deemed to have been, granted under this Section 5.1(c) .

(d) The Board of Directors may waive the application of Section 3.1 to a Flip-in Event provided that the following conditions are satisfied:

	(i)	the Board of Directors has determined that the Acquiring Person became an Acquiring Person by inadvertence and without any intention to become, or knowledge that it would become, an Acquiring Person; and

	(ii)	such Acquiring Person has reduced its Beneficial Ownership of Common Shares or has entered into a contractual arrangement with the Corporation, acceptable to the Board of Directors, to do so within thirty (30) days of the date on which such contractual arrangement is entered into, such that at the time of the waiver pursuant to this subsection 5.1(d), it is no longer an Acquiring Person.

(e) If a Person acquires, pursuant to a Permitted Bid or a Competing Permitted Bid or pursuant to an Exempt Acquisition occurring under subsection 5.1(c) hereof, more than 50% of the outstanding Common Shares other than Common Shares Beneficially Owned at the date of such Permitted Bid, Competing Permitted Bid or Exempt Acquisition by such Person, the Board of Directors of the Corporation shall, notwithstanding the provisions of subsection 5.1(a) hereof, immediately upon such acquisition and without further formality be deemed to have elected to redeem, and shall redeem, the Rights at the Redemption Price.

- 41 -

(f) If the Board of Directors elects to or is deemed to have elected to redeem the Rights and, in circumstances where subsection 5.1(a) is applicable, (i) the right to exercise the Rights will thereupon, without further action and without notice, terminate and the only right thereafter of the holders of Rights shall be to receive the Redemption Price, and (ii) no further Rights shall thereafter be issued.

(g) Within 10 Business Days of the Board of Directors electing or having been deemed to have elected to redeem the Rights, the Corporation shall give notice of redemption to the holders of the then outstanding Rights by mailing such notice to each such holder at his last address as it appears upon the Rights Register of the Rights Agent, or, prior to the Separation Time, on the Common Share register maintained by the Corporation’s transfer agent. Each such notice of redemption shall state the method by which the payment of the Redemption Price shall be made.

(h) Where a Take-over Bid that is not a Permitted Bid or Competing Permitted Bid expires, is withdrawn or otherwise terminated after the Separation Time has occurred and prior to the occurrence of a Flip-in Event, the Board of Directors may elect to redeem all of the outstanding Rights at the Redemption Price.

(i) Upon the Rights being redeemed pursuant to section 5.1(h), all the provisions of this Agreement shall continue to apply as if the Separation Time had not occurred and Rights Certificates representing the number of Rights held by each holder of record of Common Shares as of the Separation Time had not been mailed to each such holder and for all purposes of this Agreement, the Separation Time shall be deemed not to have occurred.

5.2	Expiration

No Person shall have any rights pursuant to this Agreement or any Right after the Expiration Time, except as provided in Section 4.1 hereof.

5.3	Issuance of New Rights Certificates

Notwithstanding any of the provisions of this Agreement or of the Rights to the contrary, the Corporation may, at its option, issue new Rights Certificates evidencing Rights in such form as may be approved by the Board of Directors to reflect any adjustment or change in the number or kind or class of Voting Shares purchasable upon exercise of Rights made in accordance with the provisions of this Agreement.

5.4	Supplements and Amendments

(a) The Corporation may make, without the approval of the holders of Rights or Common Shares, any supplements or amendments to this Agreement: (i) specifically contemplated in subsection 2.10(f); (ii) to correct any clerical or typographical error; or (iii) which are required to maintain the validity and effectiveness of the Agreement as a result of any change in any applicable laws, rules or regulatory requirements. The Corporation may, prior to the date of any shareholders meeting referred to in Section 5.17, supplement, amend, vary or delete any of the provisions of this Agreement without the approval of any holder of Rights or Common Shares (whether or not such action would materially adversely affect the interests of the holders of Rights generally). Notwithstanding anything in this Section 5.4 to the contrary, no amendment shall be made to the provisions of Article IV except with the written concurrence of the Rights Agent to such supplement or amendment.

- 42 -

(b) Subject to subsection 5.4(a), the Corporation, with the prior consent of the holders of Common Shares obtained as set forth below, at any time before the Separation Time, amend, vary or rescind any of the provisions of this Agreement and the Rights (whether or not such action would materially adversely affect the interests of the holders of Rights generally). Such consent shall be deemed to have been given if provided by the holders of Common Shares at a meeting called and held in compliance with applicable laws, rules and regulatory requirements and the requirements in the articles and notice of articles of the Corporation. Subject to compliance with any requirements imposed by the foregoing, consent shall be given if the proposed amendment, variation or rescission is approved by the affirmative vote of a majority of the votes cast by all Independent Shareholders represented in person or by proxy at the special meeting.

(c) Subject to subsection 5.4(a), the Corporation, with the prior consent of the holders of Rights obtained as set forth below, at any time after the Separation Time and before the Expiration Time, may amend, vary or rescind any of the provisions of this Agreement and the Rights (whether or not such action would materially adversely affect the interests of the holders of Rights generally). Such consent shall be deemed to have been given if provided by the holders of Rights at a special meeting of holders of Rights called and held in compliance with applicable laws, rules and regulatory requirements and, to the extent possible, with the requirements in the articles and by- laws of the Corporation applicable to meetings of holders of Common Shares, applied mutatis mutandis. Subject to compliance with any requirements imposed by the foregoing, consent shall be given if the proposed amendment, variation or rescission is approved by the affirmative vote of a majority of the votes cast by holders of Rights (other than holders of Rights whose Rights have become null and void pursuant to subsection 3.1(b)), represented in person or by proxy at the special meeting. For the purposes hereof, each outstanding Right (other than Rights which have become null and void pursuant to subsection 3.1(b)) shall be entitled to one vote, and the procedures for calling, holding and conduct of the meeting shall be those, as nearly as may be, which are provided in the Corporation’s articles and the Business Corporations Act (British Columbia) with respect to meetings of shareholders of the Corporation.

(d) Any amendments made by the Corporation to this Agreement pursuant to subsection 5.4(a) which are required to maintain the validity and effectiveness of this Agreement as a result of any change in any applicable laws, rules or regulatory requirements shall:

(i)

if made before the Separation Time, be submitted to the holders of Common Shares at the next meeting of shareholders and the shareholders may, by the majority referred to in subsection 5.4(b), confirm or reject such amendment;

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(ii)

if made after the Separation Time, be submitted to the holders of Rights at a meeting to be called in accordance with the provisions of Section 5.4(c) hereof.

(e) The Corporation shall be required to provide the Rights Agent with notice in writing of any such amendment, rescission or variation to this Agreement as referred to in this Section 5.4 within five days of effecting such amendment, rescission or variation.

Any amendments shall, unless the Board of Directors otherwise stipulates, be effective from the date of the resolution of the Board of Directors adopting such amendment, and where the prior consent of the holders of Common Shares or Rights is required, until it is confirmed or rejected or until it ceases to be effective (as described in the next sentence) and, where such amendment is confirmed, it continues in effect in the form so confirmed. If such amendment is rejected by the holders of Common Shares or the holders of Rights or is not submitted to the holders of Common Shares or holders of Rights as required, then such amendment shall cease to be effective from and after the termination of the meeting at which it was rejected or to which it should have been but was not submitted or if such a meeting of the holders of Rights is not called within a period of six months of the making of any such amendment, at the end of such period, and no subsequent resolution of Board of Directors to amend this Agreement to substantially the same effect shall be effective until confirmed by the holders of Common Shares or the holders of Rights as the case may be.

5.5	Fractional Rights and Fractional Common Shares

(a) The Corporation shall not be required to issue fractions of Rights or to distribute Rights Certificates which evidence fractional Rights. In lieu of issuing fractional Rights, the Corporation shall pay to the registered holders of the Rights Certificates, at the time such fractional Rights would otherwise be issuable, an amount in cash equal to the same fraction of the Market Price of one whole Right that the fraction of a Right that would otherwise be issuable is of one whole Right. The Rights Agent shall have no obligation to make any payments in lieu of fractional Rights unless the Corporation shall have provided the Rights Agent with the necessary funds to pay in full all amounts payable in accordance with Section 2.2(e) .

(b) The Corporation shall not be required to issue fractions of Common Shares upon exercise of the Rights or to distribute certificates which evidence fractional Common Shares. In lieu of issuing fractional Common Shares, the Corporation shall pay to the registered holders of Right Certificates at the time such Rights are exercised as herein provided, an amount in cash equal to the same fraction of the Market Price of one Common Share that the fraction of a Common Share that would otherwise be issuable upon the exercise of such Right is of a whole Common Share. The Rights Agent shall have no obligation to make any payments in lieu of fractional Common Shares unless the Corporation shall have provided the Rights Agent with the necessary funds to pay in full all amounts payable in accordance with Section 2.2(e) .

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5.6	Rights of Action

Subject to the terms of this Agreement, rights of action in respect of this Agreement, other than rights of action vested solely in the Rights Agent, are vested in the respective holders of the Rights, and any holder of any Rights, without the consent of the Rights Agent or of the holder of any other Rights may, on such holder’s own behalf and for such holder’s own benefit and the benefit of other holders of Rights, enforce, and may institute and maintain any suit, action or proceeding against the Corporation to enforce, or otherwise act in respect of, such holder’s right to exercise such holder’s Rights in the manner provided in such holder’s Rights Certificate and in this Agreement. Without limiting the foregoing or any remedies available to the holders of Rights, it is specifically acknowledged that the holders of Rights would not have an adequate remedy at law for any breach of this Agreement and will be entitled to specific performance of the obligations under, and injunctive relief against actual or threatened violations of the obligations of any Person subject to, this Agreement.

5.7	Holder of Rights Not Deemed a Shareholder

No holder, as such, of any Rights shall be entitled to vote, receive dividends or be deemed for any purpose the holder of Common Shares or any other securities which may at any time be issuable on the exercise of such Rights, nor shall anything contained herein or in any Rights Certificate be construed to confer upon the holder of any Rights, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meetings or other actions affecting shareholders (except as provided in Section 5.8 hereof), or to receive dividends or subscription rights, or otherwise, until such Rights shall have been exercised in accordance with the provisions hereof.

5.8	Notice of Proposed Actions

If after the Separation Time and prior to the Expiration Time:

	(i)	there shall occur an adjustment in Rights attaching to the Right pursuant to Section 3.1 as a result of the occurrence of a Flip-in Event; or

	(ii)	the Corporation proposes to effect the liquidation, dissolution or winding up of the Corporation or the sale of all or substantially all of the Corporation’s assets;

then, in each such case, the Corporation shall give to each holder of a Right, in accordance with Section 5.9, a notice of such event or proposed action, which shall specify the date on which such change to the Rights, liquidation, dissolution or winding up occurred or is to take place, and such notice shall be so given within 10 Business Days after the occurrence of a change to the Rights and not less than 20 Business Days prior to the date of taking such proposed action by the Corporation.

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5.9	Notices

Any notice, demand or other communication required or permitted to be given or made by the Rights Agent or by the holder of any Rights to or on the Corporation or by the Corporation or by the holder of any Rights to or on the Rights Agent shall be in writing and shall be well and sufficiently given or made if:

	(i)	delivered in person during normal business hours on a Business Day and left with the receptionist or other responsible employee at the relevant address set forth below; or

	(ii)	except during any general interruption of postal services due to strike, lockout or other cause, sent by first-class mail; or

	(iii)	sent by telegraph, facsimile or other form of recorded electronic communication, charges prepaid and confirmed in writing as aforesaid;

if to the Corporation, addressed to it at:

NexGen Energy Ltd.
Attention: President and Chief Executive Officer
#3150 – ▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇
▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇ OC3
Fax No.: ▇▇▇-▇▇▇-▇▇▇▇

and if to the Rights Agent, addressed to it at:

Computershare Investor Services Inc.
Manager, Client Services
▇▇▇ ▇▇▇▇▇, ▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇
▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇ ▇▇▇
Fax No.: ▇▇▇-▇▇▇-▇▇▇▇

Notices, demands or other communications required or permitted to be given or made by the Corporation or the Rights Agent to or on the holder of any Rights shall be in writing and shall be well and sufficiently given or made if delivered personally to such holder or delivered or mailed by first class mail to the address of such holder as it appears on the Rights register maintained by the Rights Agent, or, prior to the Separation Time, in the register of shareholders maintained by the transfer agent for the Common Shares.

Any notice so given or made shall be deemed to have been given and to have been received on the day of delivery, if so delivered; on the third Business Day (excluding each day during which there exists any general interruption of postal service due to strike, lockout, or other cause) following the mailing thereof, if so mailed; and on the day of telegraphing, telecopying or sending of the same by other means of recorded electronic communication (provided such sending is during the normal business hours of the addressee on a Business Day and if not, on the first Business Day thereafter). Each of the Corporation and the Rights Agent may from time to time change its address for notice by notice to the other given in the manner aforesaid.

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5.10	Costs of Enforcement

The Corporation agrees that if the Corporation fails to fulfill any of its obligations pursuant to this Agreement, then the Corporation shall reimburse the holder of any Rights for the costs and expenses (including reasonable legal fees) incurred by such holder and actions to enforce his rights pursuant to any Rights or this Agreement.

5.11	Successors

All the covenants and provisions of this Agreement by or for the benefit of the Corporation or the Rights Agent shall bind and inure to the benefit of their respective successors and permitted assigns hereunder.

5.12	Benefits of this Agreement

Nothing in this Agreement shall be construed to give to any Person other than the Corporation, the Rights Agent and the holders of the Rights any legal or equitable right, remedy or claim under this Agreement; but this Agreement shall be for the sole and exclusive benefit of the Corporation, the Rights Agent and the holders of the Rights.

5.13	Governing Law

This Agreement and each Right issued hereunder shall be deemed to be a contract made under the laws of the Province of British Columbia and for all purposes shall be governed by and construed in accordance with the laws of such Province applicable to contracts to be made and performed entirely within such Province.

5.14	Counterparts

This Agreement may be executed in any number of counterparts by original, facsimile or other electronic signature and each of such counterparts shall for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument.

5.15	Severability

If any term or provision hereof or the application thereof to any circumstance shall, in any jurisdiction and to any extent, be invalid or unenforceable, such term or provision shall be ineffective as to such jurisdiction to the extent of such invalidity or unenforceability without invalidating or rendering unenforceable the remaining terms and provisions hereof or the application of such term or provision to circumstances other than those as to which it is held invalid or unenforceable.

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5.16	Determinations and Actions by the Board of Directors

The Board of Directors shall have the exclusive power and authority to administer this Agreement and to exercise all rights and powers specifically granted to the Board of Directors, or as may be necessary or advisable in the administration of this Agreement, including, without limitation, the right and power to (i) interpret the provisions of this Agreement and (ii) make all determinations deemed necessary or advisable for the administration of this Agreement. All such actions, calculations and determinations (including all omissions with respect to the foregoing) which are done or made by the Board of Directors, in good faith, shall not subject the Board of Directors to any liability to the holders of the Rights.

5.17	Effective Date

This Agreement is effective in accordance with its terms from the date hereof; provided that unless confirmed by a resolution passed by a majority of the votes cast by Independent Shareholders present in person or voting by proxy and who vote in respect of confirmation of this Agreement at a meeting of shareholders of the Corporation to be held not later than October 22, 2017 or at any adjournment or postponement thereof, this Agreement shall be of no further force or effect and all Rights issued hereunder shall be void from the first to occur of: (i) the termination of such meeting; and (ii) the Close of Business (Vancouver time) on October 22, 2017.

5.18	Shareholder Review

This Agreement must be reconfirmed and approved by a resolution passed by a majority of the votes cast by Independent Shareholders who vote in respect of such reconfirmation and approval at a meeting of holders of Common Shares to be held not later than the date of the Corporation’s 2020 annual meeting of holders of Common Shares (or any adjournment or postponement thereof) and thereafter at such a meeting to be held, mutatis mutandis, every three years thereafter. If this Agreement is not so reconfirmed and approved or its not presented for reconfirmation and approval at any such meeting (or at any postponement or adjournment thereof), this Agreement and all outstanding Rights shall terminate and be void and of no further force effect on and from the close of business on that date which is the earlier of the date of termination of the meeting called to consider the reconfirmation and approval of this Agreement and the date of termination of the annual meeting of holders of Common Shares in the applicable year; provided, that termination shall not occur if a Flip-in Event has occurred (other than a Flip-in Event which has been waived pursuant to this Agreement), prior to the date upon which this Agreement would otherwise terminate pursuant to this Section 5.18.

5.19	Declaration as to Non-Canadian Holders

If, upon the advice of outside counsel, any action or event contemplated by this Agreement would require compliance with the securities laws or comparable legislation of a jurisdiction outside of Canada, the Board of Directors acting in good faith may take such actions as it may deem appropriate to ensure that such compliance is not required, including without limitation establishing procedures for the issuance to a Canadian resident Fiduciary of Rights or securities issuable on exercise of Rights, the holding thereof in trust for the Persons entitled thereto (but reserving to the Fiduciary or to the Fiduciary and the Corporation, as the Corporation may determine, absolute discretion with respect thereto) and the sale thereof and remittance of the proceeds of such sale, if any, to the Persons entitled thereto. In no event shall the Corporation or the Rights Agent be required to issue or deliver Rights or securities issuable on exercise of Rights to Persons who are citizens, residents or nationals of any jurisdiction other than Canada and any province or territory thereof in which such issue or delivery would be unlawful without registration of the relevant Persons or securities for such purposes.

- 48 -

5.20	Regulatory Approvals

Any obligation of the Corporation or action or event contemplated by this Agreement, or any amendment or supplement to this Agreement, shall be subject to receipt of any requisite approval or consent from any governmental or regulatory authority having jurisdiction including the Toronto Stock Exchange while any securities of the Corporation are listed and posted for trading thereon and for a period of 6 months thereafter.

5.21	U.S. Registration

Notwithstanding anything to the contrary, no Rights shall be deemed issued to a U.S. holder until a registration of the Rights under Section 12(b) of the U.S. Securities Exchange Act of 1934, as amended, is effective, but, regardless of when that registration shall become effective, the Rights shall be effective in accordance with Section 2 in respect of each Common Share outstanding as the Record Time and each Common Share that may be issued after the Effective Time and prior to the earlier of the Separation Time and the Expiration Time.

5.22	Force Majeure

No party shall be liable to the other, or held in breach of this Agreement, if prevented, hindered, or delayed in the performance or observance of any provision contained herein by reason of act of God, riots, terrorism, acts of war, epidemics, governmental action or judicial order, earthquakes, or any other similar causes (including, but not limited to, mechanical, electronic or communication interruptions, disruptions or failures). Performance times under this Agreement shall be extended for a period of time equivalent to the time lost because of any delay that is excusable under this Section.

5.23	Time of the Essence

Time shall be of the essence in this Agreement.

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be duly executed as of the date first above written.

	NEXGEN ENERGY LTD.

	By:	“▇▇▇▇▇ ▇▇▇▇▇▇”
		Name: ▇▇▇▇▇ ▇▇▇▇▇▇
		Title: President and CEO

	^By:	“▇▇▇▇▇▇ ▇▇▇▇▇▇▇”
		Name: ▇▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title: VP legal and General Counsel

	COMPUTERSHARE INVESTOR
	SERVICES INC.

	By:	“▇▇▇▇ ▇▇▇▇▇▇”
		Name: ▇▇▇▇ ▇▇▇▇▇▇
		Title: Relationship Manager

	^By:	“▇▇▇▇▇ ▇▇▇”
		Name: ▇▇▇▇▇ ▇▇▇
		Title: Relationship Manager

- 1

Exhibit A

[Form of Rights Certificate]

Certificate No.

Rights

THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE CORPORATION, ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT. UNDER CERTAIN CIRCUMSTANCES (SPECIFIED IN THE RIGHTS AGREEMENT), RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING PERSON, AN ASSOCIATE OR AFFILIATE OF AN ACQUIRING PERSON OR ANY PERSON ACTING JOINTLY OR IN CONCERT WITH AN ACQUIRING PERSON OR WITH AN ASSOCIATE OR AFFILIATE OF AN ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT) OR TRANSFEREES OF ANY OF THE FOREGOING WILL BECOME VOID WITHOUT FURTHER ACTION.

RIGHTS CERTIFICATE

This certifies that __________________________________, or registered assigns, is the registered holder of the number of Rights set forth above, each of which entitles the registered holder thereof, subject to the terms, provisions and conditions of a Shareholder Rights Plan Agreement made as of April 22, 2017 (the “Rights Agreement”) between NEXGEN ENERGY LTD., a corporation existing under the laws of the Province of British Columbia (the “Corporation”), and COMPUTERSHARE INVESTOR SERVICES INC., as Rights Agent, to purchase from the Corporation at any time after the Separation Time and prior to the Expiration Time (as such terms are defined in the Rights Agreement), one fully paid common share in the capital of the Corporation (a “Common Share”) (subject to adjustment as provided in the Rights Agreement) at the Exercise Price referred to below, upon presentation and surrender of this Rights Certificate with a duly completed and executed Form of Election to Exercise and payment of the Exercise Price by way of certified cheque, bank draft or money order made payable to the Corporation at the principal office of the Rights Agent in the City of Toronto, Canada. The Exercise Price shall initially be an amount equal to three time the Market Price per Common Share as at the Separation Time per Right and shall be subject to adjustment in certain events as provided in the Rights Agreement.

This Rights Certificate is subject to all the terms, provisions and conditions of the Rights Agreement which terms, provisions and conditions are hereby incorporated herein by this reference and made a part hereof and to which Rights Agreement reference is hereby made for a full description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Rights Agent, the Corporation and the holders of the Rights Certificates. Copies of the Rights Agreement are on file at the registered office of the Corporation and are available upon written request.

This Rights Certificate, with or without other Rights Certificates, upon surrender at any office of the Rights Agent designated for such purpose, may be exchanged for another Rights Certificate or Rights Certificates of like tenor and date evidencing an aggregate number of Rights equal to the aggregate number of Rights evidenced by the Rights Certificate or Rights Certificates so surrendered. If this Rights Certificate shall be exercised in part, the registered holder shall be entitled to receive, upon surrender hereof, another Rights Certificate or Rights Certificates for the number of whole Rights not exercised.

A - 2

Subject to the provisions of the Rights Agreement, the Rights evidenced by this Certificate may be redeemed by the Corporation at a redemption price of $0.00001 per Right.

No fractional Common Shares will be issued upon the exercise of any Right or Rights evidenced hereby nor will Rights Certificates be issued for less than one whole Right. In lieu thereof, a cash payment will be made as provided in the Rights Agreement.

No holder of this Rights Certificate, as such, shall be entitled to vote or receive dividends or be deemed for any purpose the holder of Common Shares or of any other securities which may at any time be issuable on the exercise hereof, nor shall anything contained in the Rights Agreement or herein be construed to confer upon the holder hereof, as such, any of the rights of a shareholder of the Corporation or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to give or withhold consent to any corporate action, or to receive notice of meetings or other actions affecting shareholders (except as provided in the Rights Agreement), or to receive dividends or subscription rights, or otherwise, until the Rights evidenced by this Rights Certificate shall have been exercised as provided in the Rights Agreement.

This Rights Certificate shall not be valid or obligatory for any purpose until it shall have been countersigned by the Rights Agent.

WITNESS the facsimile signature of the proper officers of the Corporation and its corporate seal.

Date: _____________________

	NEXGEN ENERGY LTD.


	By:	Name: •
		Title: •

	By:
		Name: •
		Title: •

	COMPUTERSHARE INVESTOR SERVICES INC.

	Countersigned:


	By:	Authorized Signatory

A - 3

Date:

A - 4

[Form of Reverse Side of Rights Certificate]

FORM OF TRANSFER

(To be executed by the registered holder if such holder desires to transfer the Rights Certificates.)

FOR VALUE RECEIVED _________________________________________________

hereby sells, assigns and transfers unto __________________________________
(Please print name and address of transferee)

this Rights Certificate, together with all right, title and interest therein, and does hereby irrevocably constitute and appoint _______________________________, as attorney, to transfer the within Rights Certificate on the books of the within-named Corporation, with full power of substitution.

Dated:

	By:
Signature Guaranteed:		Signature

(Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever)

(Signature must be guaranteed by a Canadian Schedule I chartered bank, or a financial institution that is a member of a recognized Medallion Signature Guarantee Program (STAMP).

(To be completed if true)

CERTIFICATION

The undersigned hereby represents and certifies, for the benefit of all holders of Rights and Common Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have not been, Beneficially Owned by an Acquiring Person or any Person acting jointly or in concert with any Acquiring Person or with any Affiliate or Associate thereof (all as defined in the Rights Agreement).


Dated		Signature

A - 5

NOTICE

In the event the certification set forth above is not completed in connection with a purported transfer, the Beneficial Owner of the Rights evidenced by this Rights Certificate will be deemed to be an Acquiring Person or a Person acting jointly or in concert with such Acquiring Person or an Affiliate or Associate of such Acquiring Person (all as defined in the Rights Agreement) and accordingly the Rights evidenced by this Rights Certificate will be null and void.

A - 6

[To be attached to each Rights Certificate]

FORM OF ELECTION TO EXERCISE

(To be executed if holder desires to exercise the Rights Certificate.)

TO:

NEXGEN ENERGY LTD.

The undersigned hereby irrevocably elects to exercise _____________________ whole Rights represented by the attached Rights Certificate to purchase the Common Shares issuable upon the exercise of such Rights and requests that certificates for such Common Shares be issued in the name of:


	(Name)

	(Street)

	(City and State or Province)

	(Country, Postal Code or Zip Code)

	SOCIAL INSURANCE, SOCIAL SECURITY
	OR OTHER TAXPAYER IDENTIFICATION NUMBER

A - 7

If such number of Rights shall not be all the whole Rights evidenced by this Rights Certificate, a new Rights Certificate for the balance of such whole Rights shall he registered in the name of and delivered to:


	(Name)

	(Street)

	(City and State or Province)

	(Country, Postal Code or Zip Code)

	SOCIAL INSURANCE, SOCIAL SECURITY
	OR OTHER TAXPAYER IDENTIFICATION NUMBER

Dated:
Signature Guaranteed:	Signature

(Signature must correspond to name as written upon the face of this Rights Certificate in every particular, without alteration or enlargement or any change whatsoever)

(Signature must be guaranteed by a Canadian Schedule I chartered bank, or a financial institution that is a member of a recognized Medallion Signature Guarantee Program (STAMP).

A - 8

(To be completed if true)

CERTIFICATION

The undersigned hereby represents, for the benefit of all holders of Rights and Shares, that the Rights evidenced by this Rights Certificate are not, and, to the knowledge of the undersigned, have never been, Beneficially Owned by an Acquiring Person or any Person acting jointly or in concert with any Acquiring Person or with any Affiliate or Associate thereof (all as defined in the Rights Agreement).


Dated:		Signature

NOTICE

In the event the certification set forth above is not completed in connection with a purported exercise, the Beneficial Owner of the Rights evidenced by this Rights Certificate will be deemed to be an Acquiring Person or a Person acting jointly or in concert with an Acquiring Person or an Affiliate or Associate of an Acquiring Person (all as defined in the Rights Agreement) and accordingly will deem the Rights evidenced by this Rights Certificate will be null and void.

A - 9

SHAREHOLDER RIGHTS PLAN AGREEMENT April 22, 2017 between NEXGEN ENERGY LTD. and COMPUTERSHARE INVESTOR SERVICES INC. as Rights Agent

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