John R. MacQuarrie - 25 Feb 2026 Form 4 Insider Report for BWX Technologies, Inc. (BWXT)

Role: Pres., Commercial Operations
Signature: /s/ John R. MacQuarrie, by Theresa B. Taylor, attorney-in-fact
Issuer symbol: BWXT
Transactions as of: 25 Feb 2026
Net transactions value: -$55,816
Form type: 4
Filing time: 02 Mar 2026, 17:22:05 UTC
Previous filing: 02 Mar 2026
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
MacQuarrie John R.	Pres., Commercial Operations	800 MAIN STREET, 4TH FLOOR, LYNCHBURG	/s/ John R. MacQuarrie, by Theresa B. Taylor, attorney-in-fact	02 Mar 2026	0002114311

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BWXT	Common Stock	Options Exercise	$0	+503	+2.9%	$0.000000	17,992	26 Feb 2026	Direct	F3
transaction	BWXT	Common Stock	Tax liability	$55,816	-268	-1.5%	$208.27	17,724	26 Feb 2026	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BWXT	Restricted Stock Units	Award	$0	+960		$0.000000	960	25 Feb 2026	Common Stock	960	$0.000000	Direct	F1
transaction	BWXT	Employee Stock Option (right to buy)	Award	$0	+2,817		$0.000000	2,817	25 Feb 2026	Common Stock	2,817	$208.27	Direct	F2
transaction	BWXT	Restricted Stock Units	Options Exercise	$0	-503	-33%	$0.000000	1,000	26 Feb 2026	Common Stock	503	$0.000000	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	RSUs vest in three equal annual installments beginning February 25, 2027.
F2	Stock Options vest in three equal annual installments beginning February 25, 2027. Stock Options expire February 25, 2036.
F3	RSUs vest in three equal annual installments beginning February 26, 2026. Includes accrued dividends converted into shares of BWXT common stock at $208.27 per share.