SEC Form 4 · Updated Daily
BSX
— BOSTON SCIENTIFIC CORPORATION 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 |
|---|---|---|---|---|
| PROMERICA LP | 10%+ Owner | 54,635,185 | 2007-08-07 | J |
| NICHOLAS PETER M | Director | 3,486,965 | 2016-04-01 | A |
| Mahoney Michael F | Director · Officer | 1,590,024 | 2026-08-03 | P |
| BARTELL MARK C | Officer | 830,062 | 2007-05-25 | M |
| ELLIOTT JOHN RAYMOND | Director | 742,843 | 2011-12-31 | M |
| TOBIN JAMES R | Director | 550,000 | 2008-10-09 | M |
| Bose Supratim | Officer | 517,118 | 2017-10-03 | M |
| ABELE JOHN E | Reporting Owner | 500,000 | 2015-08-21 | P |
| LENO SAM R | Director | 473,990 | 2011-06-06 | M |
| Brennan Daniel J. | Director | 293,141 | 2025-02-19 | M |
| BEST LAWRENCE C | Director | 242,189 | 2007-07-01 | F |
| Nanavaty Maulik | Officer | 177,822 | 2022-02-28 | M |
| REINHARDT UWE E | Director | 159,379 | 2014-10-31 | A |
| Pratt Timothy A. | Officer | 154,681 | 2017-12-01 | S |
| Pucel Kenneth | Officer | 138,132 | 2014-02-28 | M |
| Phalen Michael P. | Officer | 136,866 | 2018-02-28 | M |
| Onuscheck John Michael | Officer | 129,530 | 2015-01-01 | M |
| FLEISHMAN JOEL LAWRENCE | Director | 125,691 | 2008-05-06 | A |
| Lance Jean Fitterer | Officer | 118,716 | 2015-02-16 | M |
| Kucheman William | Director · Officer | 112,525 | 2012-07-31 | P |
| BYRNES BRUCE L | Director | 112,097 | 2014-10-31 | A |
| Dawkins Keith D | Officer | 110,120 | 2017-02-28 | M |
| MARIO ERNEST | Director | 86,032 | 2015-11-16 | S |
| Ballinger Kevin J. | Officer | 83,388 | 2020-03-03 | M |
| Burns Brian R | Officer | 81,854 | 2012-02-28 | M |
| SANDMAN PAUL W | Officer | 79,768 | 2008-02-29 | M |
| Wang Xin Warren | Officer | 78,985 | 2020-02-15 | M |
| Neumann Lawrence R | Officer | 78,288 | 2012-05-10 | M |
| COLEN FRED | Officer | 76,217 | 2010-05-10 | M |
| ROUX DAVID J | Director | 73,591 | 2023-05-04 | A |
| LAVIOLETTE PAUL A | Director | 69,422 | 2008-07-01 | M |
| Gilbert James | Officer | 68,707 | 2010-02-24 | M |
| Brown Vance R | Officer | 65,131 | 2026-02-13 | M |
| Fitzgerald Joseph Michael | Officer | 64,198 | 2026-07-31 | I |
| PEPPER JOHN E | Director | 58,807 | 2009-05-11 | P |
| MCCONNELL WILLIAM F JR | Officer | 57,995 | 2009-07-24 | M |
| Butcher Arthur C | Officer | 57,894 | 2026-05-02 | M |
| Baim Donald S | Officer | 57,049 | 2009-07-10 | M |
| Sununu John E | Director | 54,723 | 2025-05-08 | A |
| Mackey Edward F | Officer | 54,028 | 2022-02-28 | M |
| Bartlett Katharine T | Director | 52,464 | 2013-05-07 | A |
| Quinn Lucia Luce | Director | 52,349 | 2009-07-01 | M |
| WICHMANN DAVID S | Director | 45,382 | 2026-05-07 | A |
| Thepaut Eric Francis Yves | Officer | 44,352.99 | 2024-05-10 | M |
| McFaul David W | Officer | 42,487 | 2010-02-12 | M |
| MORECI STEPHEN F | Officer | 39,902 | 2011-07-01 | M |
| Prange Karen | Director | 38,395 | 2016-03-08 | S |
| PAUL DONOVAN | Officer | 36,408 | 2010-02-12 | M |
| Carruthers Wendy | Officer | 36,291 | 2024-12-02 | M |
| BURNS URSULA M | Director | 32,001 | 2009-05-05 | A |
| LUDWIG EDWARD J | Director | 30,359 | 2026-07-31 | P |
| Ralls-Morrison Desiree | Director | 30,298 | 2021-02-21 | M |
| Mirviss Jeffrey B. | Director | 28,454 | 2025-02-24 | S |
| Meredith Ian T | Officer | 28,082 | 2022-03-28 | S |
| Zane Ellen M | Director | 27,934 | 2026-05-07 | A |
| Sorenson John Bradley | Officer | 25,195 | 2025-05-02 | M |
| Scanlon Meghan | Officer | 25,067 | 2022-05-01 | M |
| Eddy Jodi Euerle | Director | 23,263 | 2022-04-01 | S |
| JAMES DONNA | Director | 21,879 | 2018-05-10 | A |
| FOX MARYE ANNE | Director | 21,111 | 2009-05-05 | A |
| O'Sullivan Miriam | Officer | 17,593 | 2026-02-16 | M |
| Habiger David C | Director | 17,160 | 2026-08-05 | P |
| Spriggs Otha T. III | Officer | 15,020 | 2012-09-07 | M |
| Olson Scott | Officer | 14,518 | 2022-04-01 | S |
| DEPARLE NANCY ANN | Director | 13,886 | 2008-05-06 | A |
| Morano Susan E | Director | 13,784 | 2026-08-25 | P |
| Goodman Jeffrey H | Officer | 13,000 | 2007-07-01 | M |
| Mega Jessica L | Director | 12,035 | 2026-05-07 | A |
| Monson Jonathan | Officer | 9,908 | 2026-08-10 | I |
| Connors Nelda J | Director | 8,823 | 2023-05-04 | A |
| JOHNSON KRISTINA M | Director | 8,494 | 2016-05-03 | A |
| O'Connor Padraig Andrew | Officer | 8,459 | 2026-09-02 | M |
| MACMILLAN STEPHEN P | Director | 8,000 | 2020-10-01 | A |
| Russell Mary E | Officer | 4,706 | 2006-01-03 | D |
| Pedersen John B. | Officer | 4,687 | 2012-02-16 | M |
| Weber Christophe Pierre | Director | 3,786 | 2026-05-07 | A |
| Woodworth Emily | Officer | 2,930 | 2026-08-11 | I |
| Dockendorff Charles J | Director | 2,901 | 2024-05-09 | A |
| Pierce David A | Officer | 2,444 | 2022-02-28 | M |
| FUJIMORI YOSHIAKI | Director | 2,081 | 2025-07-29 | S |
| Pegus Cheryl | Director | 1,770 | 2026-05-20 | P |
| GROVES RAY J | Director | 1,000 | 2008-10-30 | P |
| CAPELLO JEFFREY D | Director | 447 | 2013-11-27 | S |
| Smith Cathy R | Director | 141 | 2026-02-18 | — |
| NICHOLAS NJ JR | Director | 0 | 2014-08-19 | J |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-02 | O'Connor Padraig Andrew | Option exercise (derivative) | 1,171 | $0.00 | 3,516 |
| 2026-09-02 | O'Connor Padraig Andrew | Tax withholding | 567 | $48.37 | 7,892 |
| 2026-09-02 | O'Connor Padraig Andrew | Option exercise | 1,171 | $0.00 | 8,459 |
| 2026-08-25 | Morano Susan E | Open-market buy | 2,040 | $49.22 | 13,784 |
| 2026-08-11 | Woodworth Emily | I | 2,930 | $51.19 | 2,930 |
| 2026-08-10 | Monson Jonathan | I | 9,908 | $50.46 | 9,908 |
| 2026-08-05 | Habiger David C | Open-market buy | 2,100 | $47.59 | 17,160 |
| 2026-08-04 | Habiger David C | Open-market buy | 140 | $48.59 | 15,060 |
| 2026-08-03 | Mahoney Michael F | I | 22,119 | $48.43 | 22,119 |
| 2026-08-03 | Mahoney Michael F | Open-market buy | 186,240 | $48.33 | 1,590,024 |
| 2026-08-03 | Habiger David C | Open-market buy | 1,042 | $48.07 | 14,920 |
| 2026-07-31 | Fitzgerald Joseph Michael | I | 64,198 | $46.73 | 64,198 |
| 2026-07-31 | LUDWIG EDWARD J | Open-market buy | 5,000 | $45.48 | 30,359 |
| 2026-07-01 | Monson Jonathan | Option exercise (derivative) | 2,087 | $0.00 | 6,263 |
| 2026-07-01 | Monson Jonathan | Tax withholding | 1,010 | $43.06 | 39,063 |
| 2026-07-01 | Monson Jonathan | Option exercise | 2,087 | $0.00 | 40,073 |
| 2026-05-28 | Mahoney Michael F | Gift | 386,755 | $0.00 | 0 |
| 2026-05-20 | Habiger David C | Open-market buy | 2,250 | $55.92 | 13,878 |
| 2026-05-20 | LUDWIG EDWARD J | Open-market buy | 3,580 | $56.68 | 25,359 |
| 2026-05-20 | Pegus Cheryl | Open-market buy | 1,770 | $56.49 | 1,770 |
| 2026-05-19 | Habiger David C | Open-market buy | 2,200 | $56.95 | 11,628 |
| 2026-05-07 | LUDWIG EDWARD J | Grant / award | 3,800 | $0.00 | 21,779 |
| 2026-05-07 | Habiger David C | Grant / award | 3,800 | $0.00 | 9,428 |
| 2026-05-07 | Mega Jessica L | Grant / award | 3,800 | $0.00 | 12,035 |
| 2026-05-07 | Morano Susan E | Grant / award | 1,281 | $0.00 | 11,744 |
| 2026-05-07 | Morano Susan E | Grant / award | 3,800 | $0.00 | 10,463 |
| 2026-05-07 | Pegus Cheryl | Grant / award (derivative) | 1,281 | $0.00 | 10,998 |
| 2026-05-07 | Pegus Cheryl | Grant / award (derivative) | 3,800 | $0.00 | 9,717 |
| 2026-05-07 | Smith Cathy R | Grant / award (derivative) | 2,209 | $0.00 | 6,888 |
| 2026-05-07 | Smith Cathy R | Grant / award (derivative) | 3,800 | $0.00 | 4,679 |
| 2026-05-07 | Weber Christophe Pierre | Grant / award (derivative) | 2,660 | $0.00 | 2,660 |
| 2026-05-07 | Weber Christophe Pierre | Grant / award | 1,140 | $0.00 | 3,786 |
| 2026-05-07 | Weber Christophe Pierre | Grant / award | 1,767 | $0.00 | 2,646 |
| 2026-05-07 | WICHMANN DAVID S | Grant / award | 3,800 | $0.00 | 45,382 |
| 2026-05-07 | Zane Ellen M | Grant / award | 3,800 | $0.00 | 27,934 |
| 2026-05-02 | Butcher Arthur C | Option exercise (derivative) | 2,102 | $0.00 | 0 |
| 2026-05-02 | Butcher Arthur C | Tax withholding | 1,007 | $56.50 | 56,887 |
| 2026-05-02 | Butcher Arthur C | Option exercise | 2,102 | $0.00 | 57,894 |
| 2026-05-02 | O'Connor Padraig Andrew | Option exercise (derivative) | 1,802 | $0.00 | 0 |
| 2026-05-02 | O'Connor Padraig Andrew | Tax withholding | 872 | $56.50 | 7,024 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.