Company: BWXT
Filing Date: 2025-03-19
Form Type: DEF 14A
Source: 0001486957-25-000016
Chunk: 0

Company: BWX Technologies, Inc.
Filing Date: 2025-03-19
Form: DEF 14A
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### SCHEDULE 14A
<div align='center'>(Rule 14a-101)</div>

#### Proxy Statement Pursuant to Section 14(a) of the

#### Securities Exchange Act of 1934
<div align='center'>(Amendment No. )</div>

Filed by the Registrant ý

Filed by a Party other than the Registrant ☐

Check the appropriate box:

| ☐ |     | Preliminary Proxy Statement                                                     |
| ☐ |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ý |     | Definitive Proxy Statement                                                      |
| ☐ |     | Definitive Additional Materials                                                 |
| ☐ |     | Soliciting Material Pursuant to §240.14a-12                                     |

#### BWX TECHNOLOGIES, INC.
<div align='center'>(Name of registrant as specified in its charter)

(Name of person(s) filing proxy statement, if other than the registrant)</div>

Payment of Filing Fee (Check all boxes that apply):

| ý |     | No fee required.                                                                            |
| ☐ |     | Fee paid previously with preliminary materials.                                             |
| ☐ |     | Fee computed in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

800 Main Street, 4th Floor

Lynchburg, Virginia 24504

March 19, 2025

Dear Stockholder:

You are cordially invited to attend the 2025 Annual Meeting of Stockholders of BWX Technologies, Inc. (the "Annual Meeting"), which will be held on Friday, May 2, 2025 at 9:30 a.m. Eastern Daylight Time. The Annual Meeting will be held in a virtual format through a live webcast available at www.virtualshareholdermeeting.com/BWXT2025 . Additional information on participating in the Annual Meeting is available under General Information in the 2025 Proxy Statement. The Notice of Annual Meeting and Proxy Statement following this letter describe the matters to be acted on at the meeting.

As a demonstration of our commitment to transparency and good corporate governance practices, we have continued to engage directly with our stockholders over the past year to discuss matters of interest. We value the feedback we