Form 4 Filing by Kenneth J. Krieg for BWX Technologies, Inc.

This filing details a transaction involving Dividend Equivalent Rights (DERs) for Kenneth J. Krieg, a director at BWX Technologies, Inc. On June 5, 2026, 30.59 DERs were acquired, bringing the total post-transaction shares to 1450.81. These DERs are linked to restricted stock unit grants, with the underlying security being BWX Technologies common stock. The filing also includes a Power of Attorney document, appointing specific individuals to execute and submit necessary forms (3, 4, and 5) to the SEC on Mr. Krieg's behalf, as required by Section 16(a) of the Securities Exchange Act of 1934. This delegation covers electronic filing, account administration, and general representation for compliance with reporting requirements.