List of insiders holdings for MKS INSTRUMENTS INC:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | Carlyle Partners VI Cayman Holdings L.P. CEP IV Managing GP Holdings Ltd. CAP IV General Partner L.P. Carlyle Asia Partners IV L.P. Gamma Holding Co Ltd CEP IV Participations S.a r.l. SICAR CEP IV Managing GP L.P. CAP IV L.L.C. 10% Owner | 2023-05-10 16:59:52 | 0 6,482,732 | 6,482,732 | Form 4 |
| 2 | EMERSON ELECTRIC CO ASTEC AMERICA INC 10% Owner | 2007-01-17 16:03:17 | 2,751,143 0 | 2,751,143 | Form 13D |
| 3 | EMERSON ELECTRIC CO 10% Owner | 2007-01-17 16:03:17 | 2,751,143 0 | 2,751,143 | Form 13D |
| 4 | BERTUCCI CLAIRE R Spouse of Chairman | 2011-02-11 11:54:40 | 1,366,157 0 | 1,366,157 | Form 13G |
| 5 | Lee John Tseng-Chung President & CEO | 2025-02-19 18:21:12 | 966,016 0 | 966,016 | Form 4 |
| 6 | BERTUCCI JOHN R Director | 2019-05-09 16:48:10 | 67,275 301,755 | 369,030 | Form 4 |
| 7 | Burke Kathleen Flaherty EVP, GC & Secretary | 2025-02-19 18:24:46 | 212,062 0 | 212,062 | Form 4 |
| 8 | BERLINGHIERI LEO Former CEO and Director | 2014-01-02 12:36:56 | 202,123 0 | 202,123 | Form 4 |
| 9 | SMITH DONALD K V.P. & CTO | 2004-02-04 14:41:58 | 157,286 0 | 157,286 | Form 5 |
| 10 | Schreiner James Alan EVP & COO, MSD | 2025-02-19 18:39:15 | 150,217 0 | 150,217 | Form 4 |
| 11 | Henry David Philip EVP, Operations & Corp Mktg | 2025-02-19 18:29:40 | 141,299 0 | 141,299 | Form 4 |
| 12 | Gitin Mark Milton EVP & GM, PSD | 2024-02-16 15:10:39 | 119,659 0 | 119,659 | Form 4 |
| 13 | WILD GEOFFREY Director | 2022-08-18 17:26:17 | 1,813 105,807 | 107,620 | Form 4 |
| 14 | Taranto Eric Robert EVP & GM, VSD | 2025-02-19 18:43:54 | 101,400 0 | 101,400 | Form 4 |
| 15 | Hadar Ron V.P. General Manager CIT Prod. | 2007-06-07 11:41:03 | 84,063 0 | 84,063 | Form 4 |
| 16 | COLELLA GERARD G Director | 2025-02-19 18:16:57 | 5,738 60,017 | 65,755 | Form 4 |
| 17 | KLIMM ROBERT L V.P. & General Manager | 2007-05-01 15:38:25 | 42,312 0 | 42,312 | Form 4 |
| 18 | Abrams John R Sr. VP, Global Sales | 2019-02-19 18:14:58 | 36,893 0 | 36,893 | Form 4 |
| 19 | Werth Dennis L Sr. VP, Business Units | 2018-04-03 13:04:13 | 18,756 15,944 | 34,700 | Form 4 |
| 20 | Schneider Frank VP and GM Ion Systems | 2007-08-27 10:04:54 | 30,412 0 | 30,412 | Form 4 |
| 21 | Amon Cristina Director | 2015-12-17 13:12:09 | 29,283 0 | 29,283 | Form 4 |
| 22 | Mayampurath Ramakumar EVP, CFO & Treasurer | 2025-02-19 18:34:39 | 24,697 0 | 24,697 | Form 4 |
| 23 | McCarthy Michelle M VP & Chief Accounting Officer | 2025-04-17 13:51:04 | 20,731 0 | 20,731 | Form 4 |
| 24 | Quirk Brian Charles Sr. VP, Global Operations | 2018-05-08 13:52:59 | 17,641 0 | 17,641 | Form 4 |
| 25 | Mora Elizabeth Director | 2025-03-04 14:54:31 | 17,384 0 | 17,384 | Form 4 |
| 26 | WEIGNER RONALD V.P., C.F.O & Treasurer | 2010-02-12 17:39:05 | 17,204 0 | 17,204 | Form 5 |
| 27 | KAHL HANS JOCHEN Director | 2011-05-03 12:00:52 | 16,000 0 | 16,000 | Form 4 |
| 28 | ANDERSON ROBERT R Director | 2017-05-18 12:58:35 | 3,832 9,296 | 13,128 | Form 4 |
| 29 | Batra Raj Director | 2024-05-08 17:16:46 | 12,966 0 | 12,966 | Form 4 |
| 30 | VALENTE LOUIS P Director | 2012-02-07 12:42:16 | 12,000 0 | 12,000 | Form 4 |
| 31 | ROBBINS OWEN W Director | 2006-05-10 15:02:42 | 12,000 0 | 12,000 | Form 4 |
| 32 | BERGES JAMES G Director | 2006-05-10 15:02:27 | 12,000 0 | 12,000 | Form 4 |
| 33 | Williams John Edward EVP & GM, PSD | 2025-04-18 11:04:23 | 11,292 0 | 11,292 | Form 4 |
| 34 | Loomis Paul VP & GM, Astex | 2014-02-03 16:24:04 | 10,944 0 | 10,944 | Form 4 |
| 35 | Warner Michelle M Director | 2024-05-08 17:33:32 | 10,852 0 | 10,852 | Form 4 |
| 36 | Eyerman Paul VP & GM, ENI and Medical | 2014-02-03 16:25:09 | 10,121 0 | 10,121 | Form 4 |
| 37 | Moloney Jacqueline F Director | 2025-03-04 14:49:28 | 9,683 0 | 9,683 | Form 4 |
| 38 | PHILLIPPY ROBERT J Director | 2018-02-16 18:08:18 | 1,989 7,355 | 9,344 | Form 4 |
| 39 | Donahue Joseph B Director | 2024-05-08 17:24:10 | 8,871 0 | 8,871 | Form 4 |
| 40 | SMITH JOHN ALEXANDER Sr. VP, ASG | 2013-07-08 12:03:55 | 8,438 0 | 8,438 | Form 4 |
| 41 | CANNONE PETER III Director | 2024-05-08 17:19:36 | 7,133 0 | 7,133 | Form 4 |
| 42 | CHUTE RICHARD S Director | 2019-05-09 16:59:41 | 6,616 0 | 6,616 | Form 4 |
| 43 | Hess Rick D Director | 2019-05-09 17:03:07 | 5,468 0 | 5,468 | Form 4 |
| 44 | STEWART WILLIAM D VP/GM, Vacuum Products | 2012-04-24 08:06:09 | 0 3,268 | 3,268 | Form 4 |
| 45 | JABRE WISSAM G Director | 2024-11-05 16:29:59 | 2,009 0 | 2,009 | Form 4 |
| 46 | HENRY JANICE K Director | 2020-05-12 16:31:13 | 1,989 0 | 1,989 | Form 4 |
| 47 | Beecher Gregory R Director | 2020-05-06 15:53:18 | 1,981 0 | 1,981 | Form 4 |
| 48 | HANLEY PETER Director | 2018-08-08 11:46:55 | 1,501 0 | 1,501 | Form 4 |
| 49 | BAGSHAW SETH H EVP, CFO & Treasurer | 2024-02-26 11:51:10 | 0.788 0 | 0.788 | Form 4 |
| 50 | Carlyle Group Inc. Carlyle Holdings II GP L.L.C. Carlyle Holdings II L.L.C. CG Subsidiary Holdings L.L.C. TC Group Cayman Investment Holdings L.P. TC Group Cayman Investment Holdings Sub L.P. TC Group VI Cayman L.L.C. TC Group VI Cayman L.P. 10% Owner | 2024-02-12 17:45:02 | 0 0 | 0 | Form 13G |