Common use of Equals or Exceeds Maximum Clause in Contracts

Equals or Exceeds Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals or exceeds the “Maximum” level, as set forth in the Performance Matrix, 200% of the RTSR PSUs shall become nonforfeitable. AAON, Inc. AAON Forward Air Corporation FWRD Orion Group Holdings, Inc. ORN AAR Corp. AIR Franklin Electric Co., Inc. FELE ▇▇▇▇▇▇▇ Industries, Inc. ▇▇▇▇ ABM Industries Incorporated ABM FTI Consulting, Inc. FCN PGT Innovations, Inc. PGTI Actuant Corporation ATU General Cable Corporation BGC ▇▇▇▇▇▇ Industries, Inc. POWL Aegion Corporation AEGN Gibraltar Industries, Inc. ROCK Proto Labs, Inc. PRLB Aerojet Rocketdyne Holdings, Inc. AJRD Griffon Corporation GFF Quanex Building Products Corporation NX AeroVironment, Inc. AVAV Harsco Corporation HSC ▇.▇. ▇▇▇▇▇▇▇▇▇ & Sons Company RRD Alamo Group Inc. ALG Hawaiian Holdings, Inc. HA Raven Industries, Inc. RAVN Albany International Corp. AIN Healthcare Services Group, Inc. HCSG Resources Connection, Inc. RECN Allegiant Travel Company ALGT Heartland Express, Inc. HTLD Roadrunner Transportation Systems, Inc. RRTS American Woodmark Corporation AMWD ▇▇▇▇▇▇▇▇ & Struggles International, Inc. HSII ▇▇▇▇, Inc. SAIA Apogee Enterprises, Inc. APOG ▇▇▇▇▇▇▇▇▇▇▇, Inc. HI ▇▇▇▇▇▇▇ Manufacturing Co., Inc. SSD Applied Industrial Technologies, Inc. AIT Hub Group, Inc. HUBG SkyWest, Inc. SKYW ArcBest Corporation ARCB Insperity, Inc. NSP SPX Corporation SPXC Astec Industries, Inc. ASTE Insteel Industries, Inc. IIIN SPX FLOW, Inc. FLOW Atlas Air Worldwide Holdings, Inc. AAWW Interface, Inc. TILE Standex International Corporation SXI Axon Enterprise, Inc. AAXN ▇▇▇▇ ▇▇▇▇ Technologies JBT Team, Inc. TISI AZZ Inc. AZZ Kaman Corporation ▇▇▇▇ ▇▇▇▇▇▇▇ Company TNC ▇▇▇▇▇▇ Group Inc. B ▇▇▇▇▇ Services, Inc. KELY.A Tetra Tech, Inc. TTEK ▇▇▇▇▇ Corporation BRC Korn/Ferry International KFY The Greenbrier Companies, Inc. GBX ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇▇ Corporation BGG Lindsay Corporation LNN Titan International, Inc. TWI Chart Industries, Inc. GTLS LSC Communications, Inc. LKSD Trex Company, Inc. TREX CIRCOR International, Inc. CIR Lydall, Inc. LDL Triumph Group, Inc. TGI Comfort Systems USA, Inc. FIX Marten Transport, Ltd. MRTN TrueBlue, Inc. TBI Cubic Corporation CUB ▇▇▇▇▇▇, Inc. MATX UniFirst Corporation UNF DXP Enterprises, Inc. DXPE ▇▇▇▇▇▇▇▇ International Corp MATW Universal Forest Products, Inc. UFPI Echo Global Logistics, Inc. ECHO Mercury Systems, Inc. MRCY US Ecology, Inc. ECOL Encore Wire Corporation WIRE Mobile Mini, Inc. MINI Veritiv Corporation VRTV Engility Holdings, Inc. EGL Moog Inc. MOG.A Viad Corp VVI EnPro Industries, Inc. NPO ▇▇▇▇▇▇▇ Industries, Inc. MLI Vicor Corporation VICR ESCO Technologies Inc. ESE Multi-Color Corporation LABL Wabash National Corporation WNC Essendant Inc. ESND MYR Group Inc. MYRG WageWorks, Inc. WAGE Exponent, Inc. EXPO National Presto Industries, Inc. NPK ▇▇▇▇▇ Water Technologies, Inc. WTS Federal Signal Corporation FSS Navigant Consulting, Inc. NCI ▇▇▇▇▇▇▇▇▇ Research, Inc. FORR On Assignment, Inc. ASGN

Equals or Exceeds Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals or exceeds the “Maximum” level, as set forth in the Performance Matrix, 200% of the RTSR Target PSUs shall become nonforfeitable. Before all or any portion of any award of PSUs intended to qualify as “qualified performance-based compensation” for purposes of Section 162(m) of the Code shall become nonforfeitable or paid in accordance with this Appendix A or the Agreement, the Committee shall determine in writing that the Performance Goal has been satisfied. AAON, Inc. AAON Forward Air Corporation FWRD Orion Group EnerSys Moog Inc.(MOG-A) AAR CORP Engility Holdings, Inc. ORN AAR Corp. AIR Franklin Electric Co., Inc. FELE ▇▇▇▇▇▇▇ Industries, Inc. ▇▇▇▇ ABM Industries Incorporated ABM FTI ConsultingEnPro Industries, Inc. FCN PGT InnovationsMYR Group, Inc. PGTI Actuant Corporation ATU General Cable ESCO Technologies Inc. National Presto Industries Inc. Aegion Corporation BGC Essendant Inc. Navigant Consulting Inc. Aerojet Rocketdyne Holdings, Inc. Exponent Inc. On Assignment, Inc. AeroVironment, Inc. Federal Signal Corporation Orion Marine Group, Inc. Albany International Corp. Forward Air Corporation PGT, Inc. Allegiant Travel Company Franklin Electric Co., Inc. ▇▇▇▇▇▇ Industries, Inc. POWL Aegion American Science & Engineering Inc. G&K Services, Inc. Quanex Building Products Corporation AEGN American Woodmark Corporation General Cable Corporation Republic Airways Holdings Inc. Apogee Enterprises, Inc. Gibraltar Industries, Inc. ROCK Proto LabsResources Connection, Inc. PRLB Aerojet Rocketdyne Applied Industrial Technologies, Inc. Griffon Corporation Roadrunner Transportation Systems, Inc. ArcBest Corporation Harsco Corporation ▇▇▇▇, Inc. Astec Industries, Inc. Hawaiian Holdings, Inc. AJRD Griffon Corporation GFF Quanex Building Products Corporation NX AeroVironment, Inc. AVAV Harsco Corporation HSC ▇.▇. ▇▇▇▇▇▇▇▇▇ & Sons Company RRD Alamo Group Manufacturing Co., Inc. ALG Hawaiian Atlas Air Worldwide Holdings, Inc. HA Raven Industries, Inc. RAVN Albany International Corp. AIN Healthcare Services Group, Inc. HCSG Resources ConnectionSkyWest, Inc. RECN Allegiant Travel Company ALGT AZZ incorporated Heartland Express, Inc. HTLD Roadrunner Transportation Systems, Standex International Corporation ▇▇▇▇▇▇ Group Inc. RRTS American Woodmark Corporation AMWD ▇▇▇▇▇▇▇▇ & Struggles International, Inc. HSII TASER International, Inc. ▇▇▇▇, Inc. SAIA Apogee Enterprises, Inc. APOG ▇ Corporation ▇▇▇▇▇▇▇▇▇▇▇, Inc. HI ▇▇▇▇▇▇▇ Manufacturing Co., Inc. SSD Applied Industrial Technologies, Inc. AIT Hub Group, Inc. HUBG SkyWest, Inc. SKYW ArcBest Corporation ARCB Insperity, Inc. NSP SPX Corporation SPXC Astec Industries, Inc. ASTE Insteel Industries, Inc. IIIN SPX FLOW, Inc. FLOW Atlas Air Worldwide Holdings, Inc. AAWW Interface, Inc. TILE Standex International Corporation SXI Axon Enterprise, Inc. AAXN ▇▇▇▇ ▇▇▇▇ Technologies JBT Team, Inc. TISI AZZ Inc. AZZ Kaman Corporation ▇▇▇▇ ▇▇▇▇▇▇▇ Company TNC ▇▇▇▇▇▇ Group Inc. B ▇▇▇▇▇ Services, Inc. KELY.A Tetra Tech, Inc. TTEK ▇▇▇▇▇ Corporation BRC Korn/Ferry International KFY The Greenbrier Companies, Inc. GBX ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇▇ Corporation BGG Lindsay Corporation LNN Hub Group, Inc. Tetra Tech, Inc. The Brink’s Company Insperity, Inc. Titan International, Inc. TWI Chart IndustriesCDI Corp. Interface, Inc. GTLS LSC CommunicationsThe Toro Company Celadon Group, Inc. LKSD Trex Company▇▇▇▇ ▇▇▇▇ Technologies Corporation TrueBlue, Inc. TREX Chart Industries Inc. Kaman Corporation UniFirst Corporation CIRCOR International, Inc. CIR Lydall▇▇▇▇▇ Services, Inc. LDL Triumph GroupUniversal Forest Products, Inc. TGI Comfort Systems USA, Inc. FIX Marten Transport, Ltd. MRTN TrueBlueKnight Transportation, Inc. TBI US Ecology, Inc. Cubic Corporation CUB Korn/Ferry International UTi Worldwide Inc. ▇▇▇▇▇▇▇-▇▇▇▇▇▇ Corporation Lindsay Corporation Veritiv Corporation DXP Enterprises, Inc. Lydall, Inc. Viad Corp Dycom Industries, Inc. Marten Transport LTD Vicor Corporation Echo Global Logistics, Inc. ▇▇▇▇▇▇, Inc. MATX UniFirst Corporation UNF DXP EnterprisesWageWorks, Inc. DXPE EMCOR Group, Inc. ▇▇▇▇▇▇▇▇ International Corp MATW Universal Forest Products, Inc. UFPI Echo Global Logistics, Inc. ECHO Mercury Systems, Inc. MRCY US Ecology, Inc. ECOL Encore Wire Corporation WIRE Mobile Mini, Inc. MINI Veritiv Corporation VRTV Engility Holdings, Inc. EGL Moog Inc. MOG.A Viad Corp VVI EnPro Industries, Inc. NPO ▇▇▇▇▇▇▇ Industries, Inc. MLI Vicor Corporation VICR ESCO Technologies Inc. ESE Multi-Color Corporation LABL Wabash National Corporation WNC Essendant Inc. ESND MYR Group Inc. MYRG WageWorks, Inc. WAGE Exponent, Inc. EXPO National Presto Industries, Inc. NPK ▇▇▇▇▇ Water Technologies, Inc. WTS Federal Signal Encore Wire Corporation FSS Navigant ConsultingMobile Mini, Inc. NCI ▇▇▇▇▇▇▇▇▇ Research, Inc. FORR On Assignment, Inc. ASGNFor purposes of this Agreement:

Equals or Exceeds Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals or exceeds the “Maximum” level, as set forth in the Performance Matrix, 200% of the RTSR PSUs shall become nonforfeitable. AAON, Inc. AAON Forward Air Corporation FWRD Orion Group HoldingsNV5 Global, Inc. ORN NVEE AAR Corp. AIR Franklin Electric Co., Inc. FELE ▇▇Park Aerospace Corp. PKE ABM Industries Incorporated ABM Gibraltar Industries, Inc. ROCK PGT Innovations, Inc. PGTI Aerojet Rocketdyne Holdings, Inc. AJRD GMS Inc. GMS Pitney ▇▇▇▇▇ IndustriesInc. PBI AeroVironment, Inc. ▇▇▇▇ ABM Industries AVAV Granite Construction Incorporated ABM FTI Consulting, Inc. FCN PGT Innovations, Inc. PGTI Actuant Corporation ATU General Cable Corporation BGC GVA ▇▇▇▇▇▇ Industries, Inc. POWL Aegion Alamo Group Inc. ALG Griffon Corporation AEGN Gibraltar Industries, Inc. ROCK GFF Proto Labs, Inc. PRLB Aerojet Rocketdyne Holdings, Inc. AJRD Griffon Albany International Corp. AIN Harsco Corporation GFF HSC Quanex Building Products Corporation NX AeroVironment, Inc. AVAV Harsco Corporation HSC ▇.▇. ▇▇▇▇▇▇▇▇▇ & Sons Allegiant Travel Company RRD Alamo Group Inc. ALG ALGT Hawaiian Holdings, Inc. HA Raven IndustriesResideo Technologies, Inc. RAVN Albany International Corp. AIN REZI American Woodmark Corporation AMWD Healthcare Services Group, Inc. HCSG Resources Connection, Inc. RECN Allegiant Travel Company ALGT RGP Apogee Enterprises, Inc. APOG Heartland Express, Inc. HTLD Roadrunner Transportation SystemsSkyWest, Inc. RRTS American Woodmark Corporation AMWD SKYW Applied Industrial Technologies, Inc. AIT ▇▇▇▇▇▇▇▇ & Struggles International, Inc. HSII ▇▇▇▇, Inc. SAIA Apogee Enterprises, Inc. APOG SPX Corporation SPXC ArcBest Corporation ARCB ▇▇▇▇▇▇▇▇▇▇▇, Inc. HI ▇▇▇▇▇▇▇ Manufacturing Co.SPX FLOW, Inc. SSD Applied Industrial TechnologiesFLOW Arcosa, Inc. AIT ACA HNI Corporation HNI Standex International Corporation SXI Astec Industries, Inc. ASTE Hub Group, Inc. HUBG SkyWest, Inc. SKYW ArcBest Corporation ARCB Insperity, Inc. NSP SPX Corporation SPXC Astec Industries, Inc. ASTE Insteel Industries, Inc. IIIN SPX FLOW, Inc. FLOW Atlas Air Worldwide Holdings, Inc. AAWW Interface, Inc. TILE Standex International Corporation SXI Axon Enterprise, Inc. AAXN ▇▇▇▇ ▇▇▇▇ Technologies JBT Team, Inc. TISI AZZ Inc. AZZ Kaman Corporation ▇▇▇▇ ▇▇▇▇▇▇▇ Company TNC Atlas Air Worldwide Holdings, Inc. AAWW Insteel Industries, Inc. IIIN The GEO Group, Inc. GEO AZZ Inc. AZZ Interface, Inc. TILE The Greenbrier Companies, Inc. GBX ▇▇▇▇▇▇ Group Inc. B ▇▇▇▇ ▇▇▇▇ ServicesTechnologies Corporation JBT Titan International, Inc. KELY.A Tetra TechTWI Boise Cascade Company BCC Kaman Corporation KAMN Triumph Group, Inc. TTEK TGI ▇▇▇▇▇ Corporation BRC Korn/Ferry International KFY The Greenbrier CompaniesKAR Auction Services, Inc. GBX ▇KAR TrueBlue, Inc. TBI Chart Industries, Inc. GTLS ▇▇▇▇▇ & ▇▇▇▇▇▇▇▇ Corporation BGG Lindsay Corporation LNN Titan InternationalServices, Inc. TWI Chart KELY.A UFP Industries, Inc. GTLS LSC Communications, Inc. LKSD Trex Company, Inc. TREX UFPI CIRCOR International, Inc. CIR Lydall, Inc. LDL Triumph Group, Inc. TGI Korn Ferry KFY UniFirst Corporation UNF Comfort Systems USA, Inc. FIX Lindsay Corporation LNN US Ecology, Inc. ECOL CoreCivic, Inc. CXW ManTech International Corporation MANT Veritiv Corporation VRTV Deluxe Corporation DLX Marten Transport, Ltd. MRTN TrueBlue, Inc. TBI Cubic Corporation CUB ▇▇▇▇▇▇, Inc. MATX UniFirst Corporation UNF Viad Corp VVI DXP Enterprises, Inc. DXPE ▇▇▇▇▇▇▇▇ International Corp MATW Universal Forest Products, Inc. UFPI Echo Global Logistics, Inc. ECHO Mercury Systems, Inc. MRCY US Ecology, Inc. ECOL MATX Wabash National Corporation WNC Encore Wire Corporation WIRE Mobile Mini▇▇▇▇▇▇▇▇ International Corporation MATW ▇▇▇▇▇ Water Technologies, Inc. MINI Veritiv Corporation VRTV Engility HoldingsWTS Enerpac Tool Group Corp. EPAC Meritor, Inc. EGL Moog Inc. MOG.A Viad Corp VVI MTOR EnPro Industries, Inc. NPO Moog Inc. MOG.A ESCO Technologies Inc. ESE ▇▇▇▇▇▇▇ Industries, Inc. MLI Vicor Corporation VICR ESCO Technologies Exponent, Inc. ESE Multi-Color Corporation LABL Wabash National Corporation WNC Essendant Inc. ESND EXPO MYR Group Inc. MYRG WageWorks, Inc. WAGE Exponent, Inc. EXPO Federal Signal Corporation FSS National Presto Industries, Inc. NPK ▇▇▇▇▇ Water Technologies, Inc. WTS Federal Signal Corporation FSS Navigant Consulting, Inc. NCI ▇▇▇▇▇▇▇▇▇ Research, Inc. FORR On Assignment, NOW Inc. ASGNDNOW

Equals or Exceeds Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals or exceeds the “Maximum” level, as set forth in the Performance Matrix, 200% of the RTSR PSUs shall become nonforfeitable. AAON, Inc. AAON Exponent, Inc. EXPO NOW Inc. DNOW AAR Corp. AIR Federal Signal Corporation FSS Park Aerospace Corp. PKE ABM Industries Incorporated ABM ▇▇▇▇▇▇▇▇▇ Research, Inc. FORR PGT Innovations, Inc. PGTI Aegion Corporation AEGN Forward Air Corporation FWRD Orion Group Pitney ▇▇▇▇▇ Inc. PBI Aerojet Rocketdyne Holdings, Inc. ORN AAR Corp. AIR AJRD Franklin Electric Co., Inc. FELE ▇▇▇▇▇▇▇ Industries, Inc. ▇▇▇▇ ABM Industries Incorporated ABM FTI Consulting, Inc. FCN PGT Innovations, Inc. PGTI Actuant Corporation ATU General Cable Corporation BGC ▇▇▇▇▇▇ Industries, Inc. POWL Aegion Corporation AEGN AeroVironment, Inc. AVAV Gibraltar Industries, Inc. ROCK Proto Labs, Inc. PRLB Aerojet Rocketdyne Holdings, Alamo Group Inc. AJRD Griffon Corporation GFF ALG GMS Inc. GMS Quanex Building Products Corporation NX AeroVironment, Inc. AVAV Harsco Corporation HSC ▇.▇. ▇▇▇▇▇▇▇▇▇ & Sons Company RRD Alamo Group Inc. ALG Hawaiian Holdings, Inc. HA Albany International Corp. AIN Granite Construction Incorporated GVA Raven Industries, Inc. RAVN Albany International Corp. AIN Healthcare Services GroupAllegiant Travel Company ALGT Griffon Corporation GFF Resideo Technologies, Inc. HCSG REZI American Woodmark Corporation AMWD Harsco Corporation HSC Resources Connection, Inc. RECN Allegiant Travel Company ALGT RGP Apogee Enterprises, Inc. APOG Hawaiian Holdings, Inc. ▇▇ ▇▇▇▇, Inc. ▇▇▇▇ Applied Industrial Technologies, Inc. AIT Heartland Express, Inc. HTLD Roadrunner Transportation Systems, SEACOR Holdings Inc. RRTS American Woodmark CKH ArcBest Corporation AMWD ARCB ▇▇▇▇▇▇▇▇ & Struggles International, Inc. HSII ▇▇▇▇SkyWest, Inc. SAIA Apogee EnterprisesSKYW Arcosa, Inc. APOG ACA ▇▇▇▇▇▇▇▇▇▇▇, Inc. HI ▇▇▇▇▇▇▇ Manufacturing Co., Inc. SSD Applied Industrial Technologies, Inc. AIT Hub Group, Inc. HUBG SkyWest, Inc. SKYW ArcBest Corporation ARCB Insperity, Inc. NSP SPX Corporation SPXC Astec Industries, Inc. ASTE Insteel IndustriesHub Group, Inc. IIIN HUBG SPX FLOW, Inc. FLOW Atlas Air Worldwide Holdings, Inc. AAWW Insteel Industries, Inc. IIIN Standex International Corporation SXI AZZ Inc. AZZ Interface, Inc. TILE Standex International Corporation SXI Axon Enterprise, Inc. AAXN ▇▇▇▇ ▇▇▇▇ Technologies JBT Team, Inc. TISI AZZ Inc. AZZ Kaman Corporation ▇▇▇▇ ▇▇▇▇▇▇▇ Company TNC ▇▇▇▇▇▇ Group Inc. B ▇▇▇▇ ▇▇▇▇ Services, Inc. KELY.A Tetra Tech, Inc. TTEK Technologies Corporation JBT ▇▇▇▇▇▇▇ Company TNC Boise Cascade Company BCC Kaman Corporation BRC Korn/Ferry International KFY KAMN The Greenbrier Companies, Inc. GBX ▇▇▇▇▇▇ & ▇▇▇Corporation BRC ▇▇▇▇▇ Corporation BGG Lindsay Corporation LNN Services, Inc. KELY.A Titan International, Inc. TWI Chart Industries, Inc. GTLS LSC CommunicationsKorn Ferry KFY Triumph Group, Inc. LKSD Trex Company, Inc. TREX TGI CIRCOR International, Inc. CIR LydallLindsay Corporation LNN TrueBlue, Inc. LDL Triumph Group, Inc. TGI TBI Comfort Systems USA, Inc. FIX Lydall, Inc. LDL UFP Industries, Inc. UFPI CoreCivic, Inc. CXW Marten Transport, Ltd. MRTN TrueBlue, Inc. TBI UniFirst Corporation UNF Cubic Corporation CUB Matrix Service Company MTRX US Ecology, Inc. ECOL Deluxe Corporation DLX ▇▇▇▇▇▇, Inc. MATX UniFirst Veritiv Corporation UNF VRTV DXP Enterprises, Inc. DXPE ▇▇▇▇▇▇▇▇ International Corp Corporation MATW Universal Forest Products, Inc. UFPI Viad Corp. VVI Echo Global Logistics, Inc. ECHO Mercury SystemsMeritor, Inc. MRCY US Ecology, Inc. ECOL MTOR Vicor Corporation VICR Encore Wire Corporation WIRE Mobile Mini, Inc. MINI Veritiv Corporation VRTV Engility Holdings, Inc. EGL Moog Inc. MOG.A Viad Corp VVI EnPro Industries, Inc. NPO Wabash National Corporation WNC Enerpac Tool Group Corp. EPAC ▇▇▇▇▇▇▇ Industries, Inc. MLI Vicor Corporation VICR ESCO Technologies Inc. ESE Multi-Color Corporation LABL Wabash National Corporation WNC Essendant Inc. ESND MYR Group Inc. MYRG WageWorks, Inc. WAGE Exponent, Inc. EXPO National Presto Industries, Inc. NPK ▇▇▇▇▇ Water Technologies, Inc. WTS Federal Signal Corporation FSS Navigant ConsultingEnPro Industries, Inc. NCI ▇▇▇▇▇▇▇▇▇ ResearchNPO MYR Group Inc. MYRG ESCO Technologies Inc. ESE National Presto Industries, Inc. FORR On Assignment, Inc. ASGNNPK

Equals or Exceeds Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals or exceeds the “Maximum” level, as set forth in the Performance Matrix, 200% of the RTSR PSUs shall become nonforfeitable. AAON, Inc. AAON Forward Air Corporation FWRD Federal Signal. FSS Orion Group Holdings, Inc. ORN AAR Corp. AIR Franklin Electric Co.▇▇▇▇▇▇▇▇▇ Research, Inc. FELE ▇▇▇▇ ▇▇▇▇▇▇▇ Industries, Inc. ▇▇▇▇ ABM Industries Incorporated Industries. ABM FTI Consulting, Inc. FCN Forward Air. FWRD PGT Innovations, Inc. PGTI Actuant Corporation Corporation. ATU General Cable Corporation BGC Franklin Electric Co., Inc. FELE ▇▇▇▇▇▇ Industries, Inc. POWL Aegion Corporation Corporation. AEGN Gibraltar IndustriesFTI Consulting, Inc. ROCK FCN Proto Labs, Inc. PRLB Aerojet Rocketdyne Holdings, Inc. AJRD Griffon Corporation GFF Gibraltar Industries, Inc. ROCK Quanex Building Products Corporation Building. NX AeroVironment, Inc. AVAV Harsco Corporation HSC ▇.▇Griffon Corporation. ▇▇▇▇▇▇▇▇▇ & Sons Company GFF R.R. R. RRD Alamo Group Inc. ALG Hawaiian Holdings, Inc. HA Harsco Corporation. HSC Raven Industries, Inc. RAVN Albany International Corp. AIN Healthcare Services GroupHawaiian Holdings, Inc. HCSG HA Resources Connection, Inc. RECN Allegiant Travel Company Travel. ALGT Heartland Express, Inc. HTLD Roadrunner Transportation Systems▇▇▇▇, Inc. RRTS SAIA American Woodmark Corporation Woodmark. AMWD ▇▇▇▇▇▇▇▇ & Struggles International, Inc. HSII ▇▇▇▇▇▇▇ Manufacturing Co., Inc. SAIA SSD Apogee Enterprises, Inc. APOG ▇▇▇▇▇▇▇▇▇▇▇, Inc. HI ▇▇▇▇▇▇▇ Manufacturing Co.SkyWest, Inc. SSD SKYW Applied Industrial Technologies, Inc. AIT Hub Group, Inc. HUBG SkyWest, Inc. SKYW SPX Corporation. SPXC ArcBest Corporation Corporation. ARCB Insperity, Inc. NSP SPX Corporation SPXC Astec Industries, Inc. ASTE Insteel Industries, Inc. IIIN SPX FLOW, Inc. FLOW Arcosa, Inc. ACA Interface, Inc. TILE Standex International. SXI Astec Industries, Inc. ASTE ▇▇▇▇ ▇▇▇▇. JBT Team, Inc. TISI Atlas Air Worldwide Holdings, Inc. AAWW Interface, Inc. TILE Standex International Corporation SXI Axon Enterprise, Inc. AAXN ▇▇▇▇ ▇▇▇▇ Technologies JBT Team, Inc. TISI AZZ Inc. AZZ Kaman Corporation Corporation. ▇▇▇▇ ▇▇▇▇▇▇▇ Company Company. TNC ▇▇▇▇▇▇ Group Axon Enterprise, Inc. B AAXN ▇▇▇▇▇ Services, Inc. KELY.A Tetra Tech, Inc. TTEK ▇▇▇▇▇ Corporation BRC Korn/Ferry International AZZ Inc. AZZ Korn Ferry. KFY The Greenbrier Companies, Inc. GBX ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇▇ Corporation BGG Group Inc. B Lindsay Corporation Corporation. LNN Titan International, Inc. TWI Chart Industries, Inc. GTLS ▇▇▇▇▇ Corporation. BRC LSC Communications, Inc. LKSD Trex Company, Inc. TREX CIRCOR International, Inc. CIR ▇▇▇▇▇▇ &. BGG Lydall, Inc. LDL Triumph Group, Inc. TGI Comfort Systems USAChart Industries, Inc. FIX GTLS Marten Transport, Ltd. MRTN TrueBlue, Inc. TBI Cubic Corporation CUB CIRCOR International, Inc. CIR ▇▇▇▇▇▇, Inc. MATX UniFirst Corporation Corporation. UNF DXP EnterprisesComfort Systems USA, Inc. DXPE FIX ▇▇▇▇▇▇▇▇ International Corp International. MATW Universal Forest Products, Inc. UFPI Echo Global Logistics, Inc. ECHO Cubic Corporation. CUB Mercury Systems, Inc. MRCY US Ecology, Inc. ECOL Encore Wire Corporation WIRE DXP Enterprises, Inc. DXPE Mobile Mini, Inc. MINI Veritiv Corporation Corporation. VRTV Engility HoldingsEcho Global Logistics, Inc. EGL ECHO Moog Inc. MOG.A Viad Corp Corp. VVI EnPro Industries, Inc. NPO Encore Wire. WIRE ▇▇▇▇▇▇▇ Industries, Inc. MLI Vicor Corporation Corporation. VICR EnPro Industries, Inc. NPO Multi-Color Color. LABL Wabash National. WNC ESCO Technologies Inc. ESE Multi-Color Corporation LABL Wabash National Corporation WNC Essendant Inc. ESND MYR Group Inc. MYRG WageWorks, Inc. WAGE Exponent, Essendant Inc. EXPO ESND National Presto Industries, Inc. NPK ▇▇▇▇▇ Water Technologies, Inc. WTS Federal Signal Corporation FSS Exponent, Inc. EXPO Navigant Consulting, Inc. NCI ▇▇▇▇▇▇▇▇▇ Research, Inc. FORR On Assignment, Inc. ASGNFor purposes of this Agreement:

Equals or Exceeds Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals or exceeds the “Maximum” level, as set forth in the Performance Matrix, 200% of the RTSR PSUs shall become nonforfeitable. AAON, Inc. AAON Forward Air Federal Signal Corporation FWRD Orion Group Holdings, Inc. ORN FSS Park Aerospace Corp. PKE AAR Corp. AIR Franklin Electric Co.▇▇▇▇▇▇▇▇▇ Research, Inc. FELE ▇▇▇▇ ▇▇▇▇▇▇▇ Industries, Inc. ▇▇▇▇ ABM Industries Incorporated ABM FTI Consulting, Inc. FCN Forward Air Corporation FWRD PGT Innovations, Inc. PGTI Actuant Aegion Corporation ATU General Cable Corporation BGC AEGN Foundation Building Materials, Inc. FBM Pitney ▇▇▇▇▇ Inc. PBI Aerojet Rocketdyne Holdings, Inc. AJRD Franklin Electric Co., Inc. FELE ▇▇▇▇▇▇ Industries, Inc. POWL Aegion Corporation AEGN AeroVironment, Inc. AVAV Gibraltar Industries, Inc. ROCK Proto Labs, Inc. PRLB Aerojet Rocketdyne Holdings, Alamo Group Inc. AJRD Griffon Corporation GFF ALG GMS Inc. GMS Quanex Building Products Corporation NX AeroVironment, Inc. AVAV Harsco Corporation HSC Albany International Corp. AIN Granite Construction Incorporated GVA ▇.▇. ▇▇▇▇▇▇▇▇▇ & Sons Company RRD Alamo Group Inc. ALG Hawaiian Holdings, Inc. HA Allegiant Travel Company ALGT Griffon Corporation GFF Raven Industries, Inc. RAVN Albany International Corp. AIN Healthcare Services Group, Inc. HCSG American Woodmark Corporation AMWD Harsco Corporation HSC Resources Connection, Inc. RECN Allegiant Travel Company ALGT Apogee Enterprises, Inc. APOG Hawaiian Holdings, Inc. ▇▇ ▇▇▇▇, Inc. ▇▇▇▇ Applied Industrial Technologies, Inc. AIT Heartland Express, Inc. HTLD Roadrunner Transportation Systems▇▇▇▇▇▇▇ Manufacturing Co., Inc. RRTS American Woodmark SSD ArcBest Corporation AMWD ARCB ▇▇▇▇▇▇▇▇ & Struggles International, Inc. HSII ▇▇▇▇SkyWest, Inc. SAIA Apogee EnterprisesSKYW Arcosa, Inc. APOG ACA ▇▇▇▇▇▇▇▇▇▇▇, Inc. HI ▇▇▇▇▇▇▇ Manufacturing Co., Inc. SSD Applied Industrial Technologies, Inc. AIT Hub Group, Inc. HUBG SkyWest, Inc. SKYW ArcBest Corporation ARCB Insperity, Inc. NSP SPX Corporation SPXC Astec Industries, Inc. ASTE Insteel IndustriesHub Group, Inc. IIIN HUBG SPX FLOW, Inc. FLOW Atlas Air Worldwide Holdings, Inc. AAWW Insteel Industries, Inc. IIIN Standex International Corporation SXI AZZ Inc. AZZ Interface, Inc. TILE Standex International Corporation SXI Axon EnterpriseTeam, Inc. AAXN TISI ▇▇▇▇▇▇ Group Inc. B ▇▇▇▇ ▇▇▇▇ Technologies Corporation JBT Team, Inc. TISI AZZ Inc. AZZ Kaman Corporation ▇▇▇▇ ▇▇▇▇▇▇▇ Company TNC ▇▇▇▇▇▇ Group Inc. B ▇▇▇▇▇ Services, Inc. KELY.A Tetra Tech, Inc. TTEK ▇▇▇▇▇ Corporation BRC Korn/Ferry International KFY Kaman Corporation KAMN The Greenbrier Companies, Inc. GBX ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇▇ Corporation BGG Lindsay Corporation LNN ▇▇▇▇▇ Services, Inc. KELY.A Titan International, Inc. TWI Chart Industries, Inc. GTLS LSC CommunicationsKorn Ferry KFY Triumph Group, Inc. LKSD Trex Company, Inc. TREX TGI CIRCOR International, Inc. CIR LydallLindsay Corporation LNN TrueBlue, Inc. LDL Triumph Group, Inc. TGI TBI Comfort Systems USA, Inc. FIX Lydall, Inc. LDL UniFirst Corporation UNF Cubic Corporation CUB Marten Transport, Ltd. MRTN TrueBlueUniversal Forest Products, Inc. TBI Cubic Corporation CUB ▇▇▇▇▇▇, Inc. MATX UniFirst Corporation UNF UFPI DXP Enterprises, Inc. DXPE Matson, Inc. MATX US Ecology, Inc. ECOL Echo Global Logistics, Inc. ECHO ▇▇▇▇▇▇▇▇ International Corp Corporation MATW Universal Forest Products, Inc. UFPI Echo Global Logistics, Inc. ECHO Mercury Systems, Inc. MRCY US Ecology, Inc. ECOL Veritiv Corporation VRTV Encore Wire Corporation WIRE Mobile Mini, Inc. MINI Veritiv Corporation VRTV Engility Holdings, Inc. EGL Viad Corp VVI Enerpac Tool Group Corp. EPAC Moog Inc. MOG.A Viad Corp VVI Vicor Corporation VICR EnPro Industries, Inc. NPO ▇▇▇▇▇▇▇ Industries, Inc. MLI Vicor Wabash National Corporation VICR WNC ESCO Technologies Inc. ESE Multi-Color Corporation LABL Wabash National Corporation WNC Essendant Inc. ESND MYR Group Inc. MYRG WageWorks, Inc. WAGE Exponent, Inc. EXPO National Presto Industries, Inc. NPK ▇▇▇▇▇ Water Technologies, Inc. WTS Federal Signal Corporation FSS Navigant ConsultingExponent, Inc. NCI ▇▇▇▇▇▇▇▇▇ ResearchEXPO National Presto Industries, Inc. FORR On Assignment, Inc. ASGNNPK

Equals or Exceeds Maximum. If, upon the conclusion of the Performance Period, RTSR for the Performance Period equals or exceeds the “Maximum” level, as set forth in the Performance Matrix, 200% of the RTSR Target PSUs shall become nonforfeitable. AAONBefore all or any portion of any award of PSUs intended to qualify as “qualified performance-based compensation” for purposes of Section 162(m) of the Code shall become nonforfeitable or paid in accordance with this Appendix A or the Agreement, Inc. AAON Forward Air Corporation FWRD Orion Group the Committee shall determine in writing that the Performance Goal has been satisfied. AAR CORP Engility Holdings, Inc. ORN AAR Corp. AIR Franklin Electric Co., Inc. FELE ▇▇▇▇▇▇▇ Industries, Inc. ▇▇▇▇ ABM Industries Incorporated ABM FTI EnPro Industries, Inc. MYR Group, Inc. Actuant Corporation ESCO Technologies Inc. National Presto Industries, Inc. Aegion Corporation Essendant Inc. Navigant Consulting, Inc. FCN PGT InnovationsAerojet Rocketdyne Holdings, Inc. PGTI Actuant Exponent Inc. On Assignment, Inc. AeroVironment, Inc. Federal Signal Corporation ATU General Cable Orion Marine Group, Inc. Albany International Corp. Forward Air Corporation BGC PGT, Inc. Allegiant Travel Company Franklin Electric Co., Inc. ▇▇▇▇▇▇ Industries, Inc. POWL Aegion American Science & Engineering, Inc. G&K Services, Inc. Quanex Building Products Corporation AEGN American Woodmark Corporation General Cable Corporation Republic Airways Holdings Inc. Apogee Enterprises, Inc. Gibraltar Industries, Inc. ROCK Proto LabsResources Connection, Inc. PRLB Aerojet Rocketdyne Applied Industrial Technologies, Inc. Griffon Corporation Roadrunner Transportation Systems, Inc. ArcBest Corporation Harsco Corporation ▇▇▇▇, Inc. Astec Industries, Inc. Hawaiian Holdings, Inc. AJRD Griffon Corporation GFF Quanex Building Products Corporation NX AeroVironment, Inc. AVAV Harsco Corporation HSC ▇.▇. ▇▇▇▇▇▇▇▇▇ & Sons Company RRD Alamo Group Manufacturing Co., Inc. ALG Hawaiian Atlas Air Worldwide Holdings, Inc. HA Raven Industries, Inc. RAVN Albany International Corp. AIN Healthcare Services Group, Inc. HCSG Resources ConnectionSkyWest, Inc. RECN Allegiant Travel Company ALGT AZZ incorporated Heartland Express, Inc. HTLD Roadrunner Transportation Systems, Standex International Corporation ▇▇▇▇▇▇ Group Inc. RRTS American Woodmark Corporation AMWD ▇▇▇▇▇▇▇▇ & Struggles International, Inc. HSII TASER International, Inc. ▇▇▇▇, Inc. SAIA Apogee Enterprises, Inc. APOG ▇ Corporation ▇▇▇▇▇▇▇▇▇▇▇, Inc. HI ▇▇▇▇▇▇▇ Manufacturing Co., Inc. SSD Applied Industrial Technologies, Inc. AIT Hub Group, Inc. HUBG SkyWest, Inc. SKYW ArcBest Corporation ARCB Insperity, Inc. NSP SPX Corporation SPXC Astec Industries, Inc. ASTE Insteel Industries, Inc. IIIN SPX FLOW, Inc. FLOW Atlas Air Worldwide Holdings, Inc. AAWW Interface, Inc. TILE Standex International Corporation SXI Axon Enterprise, Inc. AAXN ▇▇▇▇ ▇▇▇▇ Technologies JBT Team, Inc. TISI AZZ Inc. AZZ Kaman Corporation ▇▇▇▇ ▇▇▇▇▇▇▇ Company TNC ▇▇▇▇▇▇ Group Inc. B ▇▇▇▇▇ Services, Inc. KELY.A Tetra Tech, Inc. TTEK ▇▇▇▇▇ Corporation BRC Korn/Ferry International KFY The Greenbrier Companies, Inc. GBX ▇▇▇▇▇▇ & ▇▇▇▇▇▇▇▇ Corporation BGG Lindsay Corporation LNN Hub Group, Inc. Tetra Tech, Inc. The Brink’s Company Insperity, Inc. Titan International, Inc. TWI Chart IndustriesCDI Corp. Interface, Inc. GTLS LSC CommunicationsThe Toro Company Celadon Group, Inc. LKSD Trex Company▇▇▇▇ ▇▇▇▇ Technologies Corporation TrueBlue, Inc. TREX Chart Industries Inc. Kaman Corporation UniFirst Corporation CIRCOR International, Inc. CIR Lydall▇▇▇▇▇ Services, Inc. LDL Triumph GroupUniversal Forest Products, Inc. TGI Comfort Systems USA, Inc. FIX Marten Transport, Ltd. MRTN TrueBlueKnight Transportation, Inc. TBI US Ecology, Inc. Cubic Corporation CUB Korn/Ferry International UTi Worldwide Inc. ▇▇▇▇▇▇▇-▇▇▇▇▇▇ Corporation Lindsay Corporation Veritiv Corporation DXP Enterprises, Inc. Lydall, Inc. Viad Corp Dycom Industries, Inc. Marten Transport LTD Vicor Corporation Echo Global Logistics, Inc. ▇▇▇▇▇▇, Inc. MATX UniFirst Corporation UNF DXP EnterprisesWageWorks, Inc. DXPE EMCOR Group, Inc. ▇▇▇▇▇▇▇▇ International Corp MATW Universal Forest Products, Inc. UFPI Echo Global Logistics, Inc. ECHO Mercury Systems, Inc. MRCY US Ecology, Inc. ECOL Encore Wire Corporation WIRE Mobile Mini, Inc. MINI Veritiv Corporation VRTV Engility Holdings, Inc. EGL Moog Inc. MOG.A Viad Corp VVI EnPro Industries, Inc. NPO ▇▇▇▇▇▇▇ Industries, Inc. MLI Vicor Corporation VICR ESCO Technologies Inc. ESE Multi-Color Corporation LABL Wabash National Corporation WNC Essendant Inc. ESND MYR Group Inc. MYRG WageWorks, Inc. WAGE Exponent, Inc. EXPO National Presto Industries, Inc. NPK ▇▇▇▇▇ Water Technologies, Inc. WTS Federal Signal Encore Wire Corporation FSS Navigant ConsultingMobile Mini, Inc. NCI ▇▇▇▇▇▇▇▇▇ Research, Inc. FORR On Assignment, Inc. ASGNFor purposes of this Agreement: