Common use of SPECIFIC SPECIAL TERMS AND CONDITIONS Clause in Contracts

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 Performance Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 2021. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 Performance Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 2021. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 2017 Performance Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212017. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 Performance 2017 Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212017. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply. Canada.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 Performance 2022 Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212022. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 Performance 2019 Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212019. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 Performance 2020 Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212020. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 Performance 2016 Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212016. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply. COUNTRIES COVERED BY THIS APPENDIX A: Canada.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 Performance 2018 Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212018. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 2020 Performance Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212020. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 2018 Performance Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212018. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 2016 Performance Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212016. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.

SPECIFIC SPECIAL TERMS AND CONDITIONS. This Appendix A, which is part of the BWXT 2021 2019 Performance Restricted Stock Units Grant Agreement (the “Agreement”), contains additional terms and conditions of the Agreement that will apply to you if you reside in one of the countries listed below. It also includes information about certain other issues of which you should be aware with respect to your participation in the Plan. Such information is based on securities, exchange control, and other laws in effect in the respective countries as of February 20212019. Capitalized terms used but not defined herein shall have the same meanings assigned to them in the Plan and/or the Agreement. By accepting the Performance RSUs, you agree to be bound by the terms and conditions contained in the paragraphs below in addition to the terms of the Plan, the Agreement, and the terms of any other document that may apply to you and your Performance RSUs. In addition, the information contained herein is general in nature and may not apply to your particular situation, and BWXT is not in a position to assure you of a particular result. Accordingly, you are advised to seek appropriate professional advice as to how the relevant laws in your country may apply to your situation. Finally, if you are a citizen or resident of a country other than the one in which you are currently working, transferred employment after the Performance RSUs were granted to you, or are considered a resident of another country for local law purposes, the information contained herein may not apply.