Company: BWXT
Filing Date: 2025-03-06
Form Type: PRE 14A
Source: 0001486957-25-000011
Chunk: 88

Company: BWX Technologies, Inc.
Filing Date: 2025-03-06
Form: PRE 14A
Chunk 88
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 the Annual Meeting:

The Notice and Proxy Statement and Annual Report are available at www.proxyvote.com.

IF YOU HAVE NOT VOTED VIA THE INTERNET OR TELEPHONE, FOLD ALONG PERFORATION, DETACH</div>

### AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE
| BWX TECHNOLOGIES, INC.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
 THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
 ANNUAL MEETING OF STOCKHOLDERS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
 Friday, May 2, 2025                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
 The undersigned stockholder(s) hereby appoint(s) Rex D. Geveden and Ronald O. Whitford, Jr., or either of them, as proxies, each with the power to appoint his substitute, to represent and to vote, as designated on the reverse side of this ballot, all of the shares of common stock of BWX Technologies, Inc. that the stockholder(s) is/are entitled to vote at the Annual Meeting of Stockholders to be held at 9:30 a.m. Eastern Daylight Time on May 2, 2025 via live webcast at www.virtualshareholdermeeting.com/BWXT2025, and any adjournment or postponement thereof.                                                                                                                                                                                                                                    
 THIS PROXY, WHEN PROPERLY EXECUTED, WILL BE VOTED IN THE MANNER DIRECTED HEREIN. IF NO SUCH DIRECTION IS MADE, THIS PROXY WILL BE VOTED IN ACCORDANCE WITH THE BOARD OF DIRECTORS’ RECOMMENDATIONS.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
 ATTENTION PARTICIPANTS IN BWXT’S THRIFT PLAN:If you held shares of BWX Technologies, Inc. (“BWXT”) common stock through the BWXT Thrift Plan for Employees and Participating Subsidiary and Affiliated Companies (the “Thrift Plan”), this proxy covers all shares for which the undersigned has the right to give voting instructions to Vanguard Fiduciary Trust Company (“Vanguard”), Trustee of the Thrift Plan. Your proxy must be received no later than 11:59 p.m. Eastern Daylight Time on April 25, 2025. Any shares of BWXT common stock held in the Thrift Plan that are not voted or for which Vanguard does not receive timely voting instructions, will be voted in the same proportion as the shares for which Vanguard receives