SEC ownership of BWX Technologies, Inc.

Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001486957.

Comparable stake leader

VANGUARD PORTFOLIO MANAGEMENT LLC

Disclosed value leader

BlackRock, Inc.

Comparable rows

50/50

Latest evidence

30 Jun 2026

Top shareholders Insider holders Latest transactions

Public ticker: BWXT on NYSE
Parsed ownership sources: 13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
Largest SEC-reported holder: VANGUARD PORTFOLIO MANAGEMENT LLC
Ranking: Comparable ownership first, then disclosed value
Comparable ownership rows: 50 of 50
Meaning: Rows with safely comparable ownership %
Latest 13D/G holder: VANGUARD PORTFOLIO MANAGEMENT LLC
Source: Latest parsed Schedule 13D/G stake
Latest parsed ownership date: 30 Jun 2026
Freshness: Most recent filing date in this holder set
Issuer CIK: 0001486957
Issuer location: Lynchburg, VA

Ownership snapshot

Top shareholders of BWX Technologies, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

VANGUARD PORTFOLIO MANAGE...

Disclosed value leader

BlackRock, Inc.

Comparable rows

50/50

Latest evidence

30 Jun 2026

13D/G 13F 3/4/5 Lead comparable stake: 5.4% 13D/G row: VANGUARD PORTFOLIO MANAGEMENT LLC Showing 1-8 of 50 holder rows.

Quick read

VANGUARD PORTFOLIO MANAGEMENT LLC leads the comparable SEC ownership view at 5.4%.

50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens VANGUARD PORTFOLIO MANAGEMENT LLC's linked filing trail.

Comparable ownership Top 5

VANGUARD PORTFOLIO MANAGEMENT LLC 5.4%

VANGUARD CAPITAL MANAGEMENT LLC 5.2%

Barbara A. Niland 0.02%

BlackRock, Inc. 13%

STATE STREET CORP 4.1%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-8 of 50 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
VANGUARD PORTFOLIO MANAGEMENT LLC	13D/G 13F Vanguard Portfolio Management · Company 13D/G 13F	5.4%	$1,003,176,409 4,905,748 shares	$0	31 Mar 2026
VANGUARD CAPITAL MANAGEMENT LLC	13D/G 13F Vanguard Capital Management · Company 13D/G 13F	5.2%	$977,900,218 4,782,142 shares	$0	31 Mar 2026
Barbara A. Niland	3/4/5 Director 3/4/5	0.02%	$4,469,742 21,858 shares	—	30 Apr 2026
BlackRock, Inc.	13F Company 13F	13%	$2,359,894,949 12,123,786 shares	—	30 Jun 2026
STATE STREET CORP	13F Company 13F	4.1%	$739,548,344 3,799,375 shares	—	30 Jun 2026
JPMORGAN CHASE & CO	13F Company 13F	2.9%	$503,121,280 2,654,239 shares	—	30 Jun 2026
FIRST TRUST ADVISORS LP	13F Company 13F	2.3%	$404,005,408 2,075,550 shares	—	30 Jun 2026
ALKEON CAPITAL MANAGEMENT LLC	13F Company 13F	2.2%	$393,727,902 2,022,748 shares	—	30 Jun 2026

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Forms 3/4/5 flow

Insider trading overview

Net insider flow leans to selling over the last 12 months. Net value: -$8,992,705.

Buys

Insiders: 0

Sells

$8,992,705

Insiders: 4

Net

-$8,992,705

Shares: -45,744

Window

Last 12 months

4 rolling buckets

Buy value Sell value

Shares: 0 Shares: 45,744

Window (months)	Sell shares	Buy value	Sell value	Net value
0-3	10,000	$0	$1,725,007	-$1,725,007
3-6	13,761	$0	$2,842,456	-$2,842,456
6-9	11,983	$0	$2,446,237	-$2,446,237
9-12	10,000	$0	$1,979,005	-$1,979,005

Reporting owners

Insider holders from Forms 3/4/5

Showing 1-20 of 30 reporting-owner rows connected to BWX Technologies, Inc.. Open a relationship link for the CIK-to-CIK filing trail.

Rows

Largest Forms 3/4/5 holder

Rex D. Geveden

Net 12M change

-$8,992,704

Latest report

12 Aug 2026

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Rex D. Geveden	President and CEO, Director	$34,158,716	-$7,784,696	-19%	Mixed	12 Aug 2026
David S. Black	Sr. V.P., CFO	$5,096,349			Mixed	11 Nov 2021
John R. MacQuarrie	Pres., Commercial Operations	$4,664,333			Mixed	02 Mar 2026
Barbara A. Niland	Director	$4,469,742			Mixed	30 Apr 2026
Robb A. LeMasters	SVP & Chief Financial Officer	$4,320,814			Mixed	28 Feb 2025
Ronald Owen Whitford Jr.	SVP, General Counsel and Sec.	$1,888,611			Mixed	11 Aug 2025
Joel W. Duling	President, Nuclear Operations	$1,629,553			Mixed	09 May 2021
Jan Bertsch	Director	$1,490,652			Mixed	05 Jun 2026
Michael Thomas Fitzgerald	SVP & Chief Financial Officer	$1,486,332	-$505,757	-25%	Mixed	11 May 2026
Leland D. Melvin	Director	$1,162,369			Mixed	05 Jun 2026
Joseph Kirwan Miller	Pres., Government Operations	$1,071,936			Mixed	01 Jul 2026
Thomas E. Mccabe	SVP & General Counsel	$992,819			Mixed	01 Mar 2022
Omar Fathi Meguid	SVP and Chief Digital Officer	$876,978			Mixed	05 Jan 2026
John A. Fees	Director	$841,798			Mixed	29 Mar 2022
Kevin M. McCoy	Pres., Government Operations	$814,793			Mixed	28 Feb 2025
Robert Fendlay Smith	President, Gov. Operations	$731,477			Mixed	11 Jan 2022
Kenneth J. Krieg	Director	$623,228			Mixed	05 Jun 2026
Jason S. Kerr	VP & Chief Accounting Officer	$607,160			Mixed	07 Mar 2022
Robert L. Duffy	SVP and Chief Admin. Officer	$472,815			Mixed	05 Mar 2025
John M. Richardson	Director	$394,359			Mixed	05 Jun 2026

Recent insider transactions for BWX Technologies, Inc.

Showing up to 300 recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares owned	Date	Ownership
Rex D. Geveden	BWXT	Common Stock	Sale	-4.94%	$1,725,007	$172.50	-10,000	192,491	12 Aug 2026	Direct
Gonzalo Raul Cajade	BWXT	Common Stock	Tax liability	-24.7%			-124	378	01 Jul 2026	Direct
Gonzalo Raul Cajade	BWXT	Common Stock	Options Exercise	195.3%			332	502	01 Jul 2026	Direct
Gonzalo Raul Cajade	BWXT	Restricted Stock Units	Options Exercise	-33.3%			-332	664	01 Jul 2026	Direct
Joseph Kirwan Miller	BWXT	Common Stock	Tax liability	-1.98%			-106	5,242	01 Jul 2026	Direct
Joseph Kirwan Miller	BWXT	Common Stock	Options Exercise	4.64%			237	5,348	01 Jul 2026	Direct
Joseph Kirwan Miller	BWXT	Restricted Stock Units	Options Exercise	-33.3%			-237	474	01 Jul 2026	Direct
Jan Bertsch	BWXT	Dividend Equivalent Rights	Award	1.61%			35.47	2,242	05 Jun 2026	Direct
Gerhard F. Burbach	BWXT	Dividend Equivalent Rights	Award	2.59%			19.62	778	05 Jun 2026	Direct
James M. Jaska	BWXT	Dividend Equivalent Rights	Award	2.2%			23.95	1,110	05 Jun 2026	Direct
Daniel L. Jablonsky	BWXT	Dividend Equivalent Rights	Award	806.2%			1.29	1	05 Jun 2026	Direct
Kenneth J. Krieg	BWXT	Dividend Equivalent Rights	Award	2.15%			30.59	1,451	05 Jun 2026	Direct
Leland D. Melvin	BWXT	Dividend Equivalent Rights	Award	6.06%			13.06	228	05 Jun 2026	Direct
Nicole Weyerhaeuser Piasecki	BWXT	Dividend Equivalent Rights	Award	14.1%			6.6	53	05 Jun 2026	Direct
John M. Richardson	BWXT	Dividend Equivalent Rights	Award	4.29%			13.91	338	05 Jun 2026	Direct
Rex D. Geveden	BWXT	Common Stock	Sale	-4.71%	$2,048,124	$204.81	-10,000	202,491	12 May 2026	Direct
Michael Thomas Fitzgerald	BWXT	Common Stock	Sale	-26%	$505,757	$209.25	-2,417	6,884	11 May 2026	Direct
Michael Thomas Fitzgerald	BWXT	Common Stock	Options Exercise	35.1%			2,417	9,301	11 May 2026	Direct
Michael Thomas Fitzgerald	BWXT	Employee Stock Option (right to buy)	Options Exercise	-76.1%			-2,417	760	11 May 2026	Direct
Michael Thomas Fitzgerald	BWXT	Common Stock	Tax liability	-19%			-1,618	6,884	06 May 2026	Direct
Michael Thomas Fitzgerald	BWXT	Common Stock	Options Exercise	49.8%			2,826	8,502	06 May 2026	Direct
Michael Thomas Fitzgerald	BWXT	Employee Stock Option (right to buy)	Options Exercise	-100%			-2,826	0	06 May 2026	Direct
Jan Bertsch	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
Gerhard F. Burbach	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
James M. Jaska	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
Kenneth J. Krieg	BWXT	Common Stock	Options Exercise	52%			762	2,227	30 Apr 2026	Direct
Kenneth J. Krieg	BWXT	Restricted Stock Units	Options Exercise	-100%			-762	0	30 Apr 2026	Direct
Kenneth J. Krieg	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
Leland D. Melvin	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
Barbara A. Niland	BWXT	Common Stock	Options Exercise	3.61%			762	21,858	30 Apr 2026	Direct
Barbara A. Niland	BWXT	Restricted Stock Units	Options Exercise	-100%			-762	0	30 Apr 2026	Direct
Barbara A. Niland	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
Nicole Weyerhaeuser Piasecki	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
John M. Richardson	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
Daniel L. Jablonsky	BWXT	Restricted Stock Units	Award				762	762	30 Apr 2026	Direct
Daniel L. Jablonsky	BWXT	Dividend Equivalent Rights	Award				0.16	0	27 Mar 2026	Direct
Jan Bertsch	BWXT	Dividend Equivalent Rights	Award	1.45%			31.5	2,207	27 Mar 2026	Direct
Gerhard F. Burbach	BWXT	Dividend Equivalent Rights	Award	2.29%			16.96	758	27 Mar 2026	Direct
John M. Richardson	BWXT	Dividend Equivalent Rights	Award	3.76%			11.73	324	27 Mar 2026	Direct
Nicole Weyerhaeuser Piasecki	BWXT	Dividend Equivalent Rights	Award	12%			5.03	47	27 Mar 2026	Direct
Leland D. Melvin	BWXT	Dividend Equivalent Rights	Award	5.36%			10.95	215	27 Mar 2026	Direct
Kenneth J. Krieg	BWXT	Dividend Equivalent Rights	Award	2.01%			28.02	1,420	27 Mar 2026	Direct
James M. Jaska	BWXT	Dividend Equivalent Rights	Award	1.96%			20.91	1,086	27 Mar 2026	Direct
Kevin James Gorman	BWXT	Common Stock	Sale	-92.2%	$288,574	$214.71	-1,344	114	02 Mar 2026	Direct
Daniel L. Jablonsky	BWXT	Restricted Stock Units	Award				123	123	02 Mar 2026	Direct
John R. MacQuarrie	BWXT	Common Stock	Tax liability	-4.62%			-1,096	22,638	02 Mar 2026	Direct
John R. MacQuarrie	BWXT	Common Stock	Options Exercise	10.7%			2,302	23,734	02 Mar 2026	Direct
John R. MacQuarrie	BWXT	Employee Stock Option (right to buy)	Options Exercise	-33.3%			-2,302	4,604	02 Mar 2026	Direct
Kevin James Gorman	BWXT	Common Stock	Tax liability	-2.99%			-45	1,458	28 Feb 2026	Direct
Kevin James Gorman	BWXT	Common Stock	Options Exercise	11.8%			159	1,503	28 Feb 2026	Direct

^* marks a reported price that did not pass the local price check.