SEC Form 4 · Updated Daily
BWXT
— BWX TECHNOLOGIES, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| MASON CAPITAL MANAGEMENT LLC | 10%+ Owner | 10,794,745 | 2014-03-21 | S |
| Garschina Kenneth M. | 10%+ Owner | 10,794,745 | 2014-03-21 | S |
| Martino Michael E | 10%+ Owner | 10,794,745 | 2014-03-21 | S |
| Geveden Rex D | Director | 200,084 | 2026-08-12 | S |
| Ferland E James Jr | Director | 154,894 | 2015-06-08 | A |
| Bethards Brandon C. | Director · Officer | 146,503 | 2012-03-05 | M |
| Canafax James D | Officer | 128,127 | 2018-03-26 | M |
| Taff Michael S | Officer | 100,442 | 2011-10-06 | M |
| Black David S | Officer | 64,967 | 2021-11-11 | S |
| Baker Peyton S. | Director · Officer | 57,951 | 2016-07-01 | M |
| Killion Richard L | Officer | 51,569 | 2012-03-09 | M |
| MCWILLIAMS D BRADLEY | Director | 44,079 | 2013-05-10 | M |
| LeMasters Robb A. | Officer | 41,129 | 2025-02-28 | M |
| Mowry Christofer M | Officer | 40,899 | 2014-03-04 | M |
| GOLDMAN ROBERT W | Director | 36,624 | 2017-05-04 | M |
| Fox William A. III | Officer | 34,278 | 2016-11-13 | M |
| Colatrella Anthony S. | Officer | 32,675 | 2015-03-05 | M |
| Nash Winfred D | Officer | 31,931 | 2011-03-09 | M |
| FEES JOHN A | Director | 28,387 | 2022-03-01 | S |
| Data J Randall | Officer | 28,247 | 2015-03-05 | M |
| Carano Mark A | Director | 27,524 | 2015-06-12 | M |
| APKER JENNY L | Officer | 27,145 | 2015-06-08 | A |
| Dudich George | Officer | 25,364 | 2014-03-04 | M |
| Salomone Mary P | Officer | 24,930 | 2013-05-28 | M |
| HANKS STEPHEN G | Director | 24,879 | 2015-05-11 | M |
| MacQuarrie John R. | Officer | 23,734 | 2026-03-02 | M |
| NILAND BARBARA A | Director | 21,858 | 2026-04-30 | M |
| WEYERS LARRY L | Director | 21,668 | 2015-05-11 | M |
| Duling Joel W. | Officer | 21,568 | 2021-05-09 | M |
| Gedeon Elias | Officer | 20,875 | 2015-06-08 | A |
| Cochran S Robert | Officer | 20,493 | 2011-03-05 | M |
| Bash Benjamin H. | Officer | 18,134 | 2016-07-01 | M |
| MCCABE THOMAS E | Officer | 17,493 | 2022-03-01 | A |
| Loving Richard W | Officer | 16,281 | 2022-02-27 | M |
| Pramaggiore Anne R | Director | 14,082 | 2013-05-10 | M |
| Lees Michael D | Officer | 13,819 | 2012-03-05 | M |
| Whitford Ronald Owen Jr | Officer | 12,241 | 2025-08-11 | M |
| Bertsch Jan | Director | 12,128 | 2024-12-10 | M |
| Henry Joseph G | Officer | 10,639 | 2018-06-08 | S |
| Fitzgerald Michael Thomas | Officer | 9,301 | 2026-05-11 | M |
| Athanas Vangel | Officer | 8,993 | 2012-08-12 | M |
| Miller Joseph Kirwan | Officer | 8,621 | 2026-09-01 | M |
| Mies Richard Willard | Director | 8,101 | 2019-01-01 | M |
| Kerr Jason S. | Officer | 7,785 | 2022-03-07 | S |
| PRYOR CHARLES W JR | Director | 7,391 | 2020-05-01 | M |
| McCoy Kevin M | Officer | 7,127 | 2025-02-28 | M |
| JASKA JAMES M | Director | 6,466 | 2023-05-03 | M |
| Melvin Leland D | Director | 5,579 | 2025-08-11 | S |
| Meguid Omar Fathi | Officer | 5,292 | 2026-01-05 | M |
| Christopher Thomas A. | Director | 3,921 | 2011-09-19 | M |
| Smith Robert Fendlay | Officer | 3,790 | 2022-01-11 | M |
| FERRAIOLI BRIAN K | Director | 3,590 | 2015-05-11 | M |
| DUFFY ROBERT L | Officer | 3,206 | 2025-03-05 | S |
| Tarapore Kairus | Officer | 2,248 | 2015-03-04 | M |
| Krieg Kenneth J | Director | 2,227 | 2026-04-30 | M |
| Richardson John M | Director | 2,194 | 2025-05-02 | M |
| NARDELLI ROBERT L | Director | 2,000 | 2023-08-18 | P |
| Azad Ali | Officer | 1,448 | 2013-03-07 | M |
| Zwetolitz Joseph A | Officer | 993 | 2014-03-04 | M |
| Cajade Gonzalo Raul | Officer | 502 | 2026-07-01 | M |
| Gorman Kevin James | Officer | 114 | 2026-03-02 | S |
| Bender Kurt A. | Officer | 100 | 2026-02-26 | M |
| Burbach Gerhard F | Director | 0 | 2026-02-25 | S |
| PIASECKI NICOLE WEYERHAEUSER | Director | 0 | 2024-01-02 | — |
| JABLONSKY DANIEL L | Director | 0 | 2026-03-02 | — |
| Smith Toby W. | Officer | 0 | 2025-11-04 | — |
| Blue Harbour Holdings, LLC | Director | 0 | 2017-09-07 | S |
| Blue Harbour Group, L.P. | Director | 0 | 2017-09-07 | S |
| ROBBINS CLIFTON S | Director | 0 | 2017-09-07 | S |
| KINGSLEY OLIVER D JR | Director | 0 | 2010-07-08 | — |
| MCDERMOTT INTERNATIONAL INC | 10%+ Owner | 0 | 2010-07-09 | J |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-04 | Bertsch Jan | Grant / award (derivative) | 41.93 | $0.00 | 2,284.41 |
| 2026-09-04 | Richardson John M | Grant / award (derivative) | 16.44 | $0.00 | 354.31 |
| 2026-09-04 | PIASECKI NICOLE WEYERHAEUSER | Grant / award (derivative) | 7.8 | $0.00 | 61.21 |
| 2026-09-04 | Melvin Leland D | Grant / award (derivative) | 15.43 | $0.00 | 243.83 |
| 2026-09-04 | Krieg Kenneth J | Grant / award (derivative) | 36.14 | $0.00 | 1,486.95 |
| 2026-09-04 | JABLONSKY DANIEL L | Grant / award (derivative) | 1.52 | $0.00 | 2.97 |
| 2026-09-04 | JASKA JAMES M | Grant / award (derivative) | 28.29 | $0.00 | 1,138.68 |
| 2026-09-04 | Burbach Gerhard F | Grant / award (derivative) | 23.19 | $0.00 | 801.11 |
| 2026-09-01 | Miller Joseph Kirwan | Option exercise (derivative) | 3,379 | $0.00 | 0 |
| 2026-09-01 | Miller Joseph Kirwan | Tax withholding | 1,523 | $152.29 | 7,098 |
| 2026-09-01 | Miller Joseph Kirwan | Option exercise | 3,379 | $0.00 | 8,621 |
| 2026-09-01 | Maddux Suzanne | Grant / award (derivative) | 1,257 | $0.00 | 1,257 |
| 2026-09-01 | Maddux Suzanne | Grant / award (derivative) | 5,727 | $0.00 | 5,727 |
| 2026-08-12 | Geveden Rex D | Open-market sale | 2,600 | $174.22 | 192,491 |
| 2026-08-12 | Geveden Rex D | Open-market sale | 263 | $173.00 | 195,091 |
| 2026-08-12 | Geveden Rex D | Open-market sale | 4,730 | $172.18 | 195,354 |
| 2026-08-12 | Geveden Rex D | Open-market sale | 2,407 | $171.21 | 200,084 |
| 2026-07-01 | Miller Joseph Kirwan | Option exercise (derivative) | 237 | $0.00 | 474 |
| 2026-07-01 | Miller Joseph Kirwan | Tax withholding | 106 | $194.65 | 5,242 |
| 2026-07-01 | Miller Joseph Kirwan | Option exercise | 237 | $0.00 | 5,348 |
| 2026-07-01 | Cajade Gonzalo Raul | Option exercise (derivative) | 332 | $0.00 | 664 |
| 2026-07-01 | Cajade Gonzalo Raul | Tax withholding | 124 | $194.65 | 378 |
| 2026-07-01 | Cajade Gonzalo Raul | Option exercise | 332 | $0.00 | 502 |
| 2026-06-05 | Richardson John M | Grant / award (derivative) | 13.91 | $0.00 | 337.87 |
| 2026-06-05 | PIASECKI NICOLE WEYERHAEUSER | Grant / award (derivative) | 6.6 | $0.00 | 53.41 |
| 2026-06-05 | Melvin Leland D | Grant / award (derivative) | 13.06 | $0.00 | 228.4 |
| 2026-06-05 | Krieg Kenneth J | Grant / award (derivative) | 30.59 | $0.00 | 1,450.81 |
| 2026-06-05 | JABLONSKY DANIEL L | Grant / award (derivative) | 1.29 | $0.00 | 1.45 |
| 2026-06-05 | JASKA JAMES M | Grant / award (derivative) | 23.95 | $0.00 | 1,110.39 |
| 2026-06-05 | Burbach Gerhard F | Grant / award (derivative) | 19.62 | $0.00 | 777.92 |
| 2026-06-05 | Bertsch Jan | Grant / award (derivative) | 35.47 | $0.00 | 2,242.48 |
| 2026-05-12 | Geveden Rex D | Open-market sale | 1,318 | $207.13 | 202,491 |
| 2026-05-12 | Geveden Rex D | Open-market sale | 1,402 | $205.78 | 203,809 |
| 2026-05-12 | Geveden Rex D | Open-market sale | 3,570 | $204.65 | 205,211 |
| 2026-05-12 | Geveden Rex D | Open-market sale | 3,710 | $203.78 | 208,781 |
| 2026-05-11 | Fitzgerald Michael Thomas | Option exercise (derivative) | 897 | $0.00 | 1,794 |
| 2026-05-11 | Fitzgerald Michael Thomas | Option exercise (derivative) | 1,520 | $0.00 | 760 |
| 2026-05-11 | Fitzgerald Michael Thomas | Open-market sale | 2,417 | $209.25 | 6,884 |
| 2026-05-11 | Fitzgerald Michael Thomas | Option exercise | 897 | $106.64 | 9,301 |
| 2026-05-11 | Fitzgerald Michael Thomas | Option exercise | 1,520 | $100.83 | 8,404 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.