BWXT: Other company developments

Item 8.01 Other Events On November 4, 2026, BWX Technologies, Inc. (the “Company”) issued a press release announcing that it had launched a private offering of $500 million in aggregate principal amount of senior notes due 2034. Additionally, on November 4, 2026, the Company issued a press release announcing that it had commenced (i) concurrent cash tender offers for any and all of its outstanding 4.125% Senior Notes due 2028 (the “2028 Notes”) and 4.125% Senior Notes due 2029 (the “2029 Notes” and, together with the 2028 Notes, the “Notes”) and (ii) solicitations of consents to certain proposed amendments to each of the indentures governing the Notes. Copies of the press releases are filed as Exhibits 99.1 and 99.2 to this Current Report on Form 8-K. Item 9.01 Financial Statements and Exhibits (d) Exhibits: Exhibit No. Description 99.1 Press release dated November 4, 2026 relating to the Company’s offering of senior notes. 99.2 Press release dated November 4, 2026 relating to the Company’s tender offers and consent solicitations. 104 Cover Page Interactive Data File (formatted as inline XBRL and contained in the Inline XBRL document). SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. BWX TECHNOLOGIES, INC. Dated: November 4, 2026 /s/ Michael T. Fitzgerald Name: Michael T. Fitzgerald Title: Senior Vice President and Chief Financial Officer