Common use of Signatory Clause in Contracts

Signatory. Address: ----------------------------------- ----------------------------------- ACKNOWLEDGED AND ACCEPTED: ALLIED DIGITAL TECHNOLOGIES CORP. By ----------------------------------- Name: Title: Registration Rights Agreement Exhibit A-2 Form of Registration Rights Joinder Agreement For Additional Stockholders (including Additional Management Stockholders) Allied Digital Technologies Corp. ▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Attention: Chief Executive Officer Ladies & Gentlemen: In consideration of the issuance to the undersigned of [describe security being issued] of Allied Digital Technologies Corp., a Delaware corporation (the "Company"), the undersigned agrees that, as of the date written below, [he] [she] [it] shall become a party to [and a Management Stockholder under] that certain Registration Rights Agreement dated as of ______ __, 1998, as such agreement may have been amended from time to time (the "Agreement"), among the Company and the persons named therein, and shall be fully bound by, and subject to, the covenants, terms and conditions of the Agreement as provided under Section 11.5 of the Agreement as though an original party thereto. Executed as of the day of , .

Signatory. Address: ----------------------------------- ----------------------------------- -------------------------------- -------------------------------- ACKNOWLEDGED AND ACCEPTED: ALLIED DIGITAL TECHNOLOGIES CORPTHE GNI GROUP, INC. By ----------------------------------- -------------------------------------- Name: Title: 33 Registration Rights Agreement Exhibit A-2 A-3 Form of Registration Rights Joinder Agreement For Additional Stockholders (including Additional Management Transferees under Section 2.4 of the Stockholders) Allied Digital Technologies Corp. ' Agreement The GNI Group, Inc. 2525 ▇▇▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Attention▇▇tention: Chief Executive Officer Ladies & Gentlemen: In consideration of the issuance transfer to the undersigned of [describe security being issuedDESCRIBE SECURITY BEING TRANSFERRED] of Allied Digital Technologies Corp.The GNI Group, Inc., a Delaware corporation (the "Company"), the undersigned agrees that, as of the date written below, [he] [she] [itHE][SHE][IT] shall become a party to [and a Management an Additional Stockholder under] under that certain Registration Rights Agreement dated as of _______ __, 1998, as such agreement may have been amended from time to time (the "Agreement"), among the Company and the persons named therein, and shall be fully bound by, and subject to, the covenants, terms and conditions of the Agreement as provided under Section 11.5 of the Agreement as though an original party thereto. Executed as of the day of , .

Signatory. Address: ----------------------------------- ----------------------------------- --------------------------------- --------------------------------- ACKNOWLEDGED AND ACCEPTED: ALLIED DIGITAL TECHNOLOGIES CORP. By ----------------------------------- ------------------------------------ Name: Title: Registration Rights Agreement Exhibit A-2 A-3 Form of Registration Rights Joinder Agreement For Additional Stockholders (including Additional Management Stockholders) Transferees under Section 2.4 of the Investors' Agreement Allied Digital Technologies Corp. ▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Attention: Chief Executive Officer Ladies & Gentlemen: In consideration of the issuance transfer to the undersigned of [describe security being issuedtransferred] of Allied Digital Technologies Corp., a Delaware corporation (the "Company"), the undersigned agrees that, as of the date written below, [he] [she] [it] shall become a party to [and a Management an Additional Stockholder under] under that certain Registration Rights Agreement dated as of _______ __, 1998, as such agreement may have been amended from time to time (the "Agreement"), among the Company and the persons named therein, and shall be fully bound by, and subject to, the covenants, terms and conditions of the Agreement as provided under Section 11.5 of the Agreement as though an original party thereto. Executed as of the day of , .

Signatory. Address: ----------------------------------- ----------------------------------- --------------------------------- --------------------------------- ACKNOWLEDGED AND ACCEPTED: ALLIED DIGITAL TECHNOLOGIES CORP. By ----------------------------------- ------------------------------------ Name: Title: Registration Rights Agreement Exhibit A-2 Form of Registration Rights Joinder Agreement For Additional Stockholders (including Additional Management Stockholders) Allied Digital Technologies Corp. ▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Attention: Chief Executive Officer Ladies & Gentlemen: In consideration of the issuance to the undersigned of [describe security being issued] of Allied Digital Technologies Corp., a Delaware corporation (the "Company"), the undersigned agrees that, as of the date written below, [he] [she] [it] shall become a party to [and a Management Stockholder under] that certain Registration Rights Agreement dated as of ______ __, 1998, as such agreement may have been amended from time to time (the "Agreement"), among the Company and the persons named therein, and shall be fully bound by, and subject to, the covenants, terms and conditions of the Agreement as provided under Section 11.5 of the Agreement as though an original party thereto. Executed as of the day of , .

Signatory. Address: ----------------------------------- ----------------------------------- ------------------------ ------------------------ ACKNOWLEDGED AND ACCEPTED: ALLIED DIGITAL TECHNOLOGIES CORPTHE GNI GROUP, INC. By ----------------------------------- ----------------------------- Name: Title: 32 Registration Rights Agreement Exhibit A-2 Form of Registration Rights Joinder Agreement For Additional Stockholders (including Additional Management Stockholders) Allied Digital Technologies Corp. The GNI Group, Inc. 2525 ▇▇▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Attention▇▇tention: Chief Executive Officer Ladies & Gentlemen: In consideration of the issuance to the undersigned of [describe security being issuedDESCRIBE SECURITY BEING ISSUED] of Allied Digital Technologies Corp.The GNI Group, Inc., a Delaware corporation (the "Company"), the undersigned agrees that, as of the date written below, [he] [she] [itHE][SHE][IT] shall become a party to [and a Management Stockholder underAND A MANAGEMENT STOCKHOLDER UNDER] that certain Registration Rights Agreement dated as of ______ __, 1998, as such agreement may have been amended from time to time (the "Agreement"), among the Company and the persons named therein, and shall be fully bound by, and subject to, the covenants, terms and conditions of the Agreement as provided under Section 11.5 of the Agreement as though an original party thereto. Executed as of the day of , .

Signatory. Address: ----------------------------------- ----------------------------------- ------------------------------ ------------------------------ ACKNOWLEDGED AND ACCEPTED: ALLIED DIGITAL TECHNOLOGIES CORPTHE GNI GROUP, INC. By ----------------------------------- BY -------------------------------------- Name: Title: 32 Registration Rights Agreement Exhibit A-2 Form of Registration Rights Joinder Agreement For Additional Stockholders (including Additional Management Stockholders) Allied Digital Technologies Corp. The GNI Group, Inc. 2525 ▇▇▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Attention▇▇tention: Chief Executive Officer Ladies & Gentlemen: In consideration of the issuance to the undersigned of [describe security being issuedDESCRIBE SECURITY BEING ISSUED] of Allied Digital Technologies Corp.The GNI Group, Inc., a Delaware corporation (the "Company"), the undersigned agrees that, as of the date written below, [he] [she] [itHE][SHE][IT] shall become a party to [and a Management Stockholder underAND A MANAGEMENT STOCKHOLDER UNDER] that certain Registration Rights Agreement dated as of ______ __, 1998, as such agreement may have been amended from time to time (the "Agreement"), among the Company and the persons named therein, and shall be fully bound by, and subject to, the covenants, terms and conditions of the Agreement as provided under Section 11.5 of the Agreement as though an original party thereto. Executed as of the day of , .

Signatory. Address: ----------------------------------- ----------------------------------- ACKNOWLEDGED AND ACCEPTED: ALLIED DIGITAL TECHNOLOGIES CORP. By ----------------------------------- Name: Title: Registration Rights Agreement Exhibit A-2 A-3 Form of Registration Rights Joinder Agreement For Additional Stockholders (including Additional Management Stockholders) Transferees under Section 2.4 of the Investors' Agreement Allied Digital Technologies Corp. ▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Attention: Chief Executive Officer Ladies & Gentlemen: In consideration of the issuance transfer to the undersigned of [describe security being issuedtransferred] of Allied Digital Technologies Corp., a Delaware corporation (the "Company"), the undersigned agrees that, as of the date written below, [he] [she] [it] shall become a party to [and a Management an Additional Stockholder under] under that certain Registration Rights Agreement dated as of _______ __, 1998, as such agreement may have been amended from time to time (the "Agreement"), among the Company and the persons named therein, and shall be fully bound by, and subject to, the covenants, terms and conditions of the Agreement as provided under Section 11.5 of the Agreement as though an original party thereto. Executed as of the day of , .

Signatory. Address: ----------------------------------- ----------------------------------- ---------------------------- ---------------------------- ACKNOWLEDGED AND ACCEPTED: ALLIED DIGITAL TECHNOLOGIES CORPTHE GNI GROUP, INC. By ----------------------------------- -------------------------------- Name: Title: 33 Registration Rights Agreement Exhibit A-2 A-3 Form of Registration Rights Joinder Agreement For Additional Stockholders (including Additional Management Transferees under Section 2.4 of the Stockholders) Allied Digital Technologies Corp. ' Agreement The GNI Group, Inc. 2525 ▇▇▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇ Attention▇▇tention: Chief Executive Officer Ladies & Gentlemen: In consideration of the issuance transfer to the undersigned of [describe security being issuedDESCRIBE SECURITY BEING TRANSFERRED] of Allied Digital Technologies Corp.The GNI Group, Inc., a Delaware corporation (the "Company"), the undersigned agrees that, as of the date written below, [he] [she] [itHE][SHE][IT] shall become a party to [and a Management an Additional Stockholder under] under that certain Registration Rights Agreement dated as of _______ __, 1998, as such agreement may have been amended from time to time (the "Agreement"), among the Company and the persons named therein, and shall be fully bound by, and subject to, the covenants, terms and conditions of the Agreement as provided under Section 11.5 of the Agreement as though an original party thereto. Executed as of the day of , .