SEC Form 4 · Updated Daily
TMO
— THERMO FISHER SCIENTIFIC INCORPORATED 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 |
|---|---|---|---|---|
| MEISTER PAUL M | Director | 450,000 | 2007-01-05 | S |
| CASPER MARC N | Director · Officer | 123,200.592 | 2026-08-28 | F |
| Tsay Yuh-Geng | Officer | 110,369 | 2010-02-26 | F |
| Pesicka Edward A | Director · Officer | 87,891 | 2015-03-05 | M |
| Lagarde Michel | Director · Officer | 85,511.029 | 2026-02-28 | F |
| Malus Alan J | Officer | 73,211 | 2016-03-10 | M |
| SPERLING SCOTT M | Director | 69,479 | 2026-05-20 | A |
| WILVER PETER M | Director | 62,517 | 2017-03-15 | S |
| Stevenson Mark P | Director | 62,141 | 2022-02-25 | F |
| Thomson Andrew J | Officer | 52,389 | 2015-08-26 | F |
| DEKKERS MARIJN E | Director | 47,481 | 2009-08-17 | A |
| Durbin Patrick M | Officer | 39,481 | 2019-08-27 | F |
| Loewald Thomas W | Director | 38,133 | 2017-08-28 | F |
| Berger Kenneth | Officer | 37,053.65 | 2012-02-25 | F |
| Williamson Stephen | Director | 32,746.469 | 2026-02-28 | F |
| BROADBENT GUY | Officer | 31,545 | 2008-03-05 | A |
| HOOGASIAN SETH H | Officer | 31,272 | 2018-02-27 | A |
| Herrema Gregory J. | Officer | 27,740 | 2019-08-27 | F |
| Pettiti Gianluca | Officer | 26,949.14 | 2026-08-31 | M |
| KOEPFGEN BRUCE L | Reporting Owner | 26,143 | 2008-08-18 | M |
| Jafry Syed A. | Director | 23,488 | 2021-02-25 | F |
| Shafer Michael D | Officer | 20,831.577 | 2026-08-28 | F |
| Massaro Joseph R | Officer | 20,756 | 2007-11-16 | S |
| Shine Daniel P | Director | 20,682 | 2017-08-30 | S |
| PORTER MICHAEL E | Director | 18,390 | 2012-03-08 | M |
| Stachtiaris Alexander G | Officer | 17,236 | 2008-03-05 | A |
| Walder Fredric T | Officer | 16,730 | 2008-03-05 | A |
| Lowery Frederick M. | Director | 15,830.091 | 2026-02-28 | F |
| Chai Nelson | Director | 15,316 | 2026-05-20 | A |
| MANZI JIM P | Director | 15,069 | 2023-02-03 | S |
| Britt Lisa P. | Officer | 14,697.118 | 2026-08-28 | F |
| Parrett William G | Director | 11,660 | 2018-02-23 | S |
| Boxer Michael A | Officer | 10,815.95 | 2025-03-10 | S |
| LYNCH THOMAS J | Director | 10,257 | 2021-11-05 | G |
| HARRIS C MARTIN | Director | 9,532 | 2026-05-20 | A |
| Jacks Tyler | Director | 9,462 | 2026-05-20 | A |
| SORENSEN LARS REBIEN | Director | 9,233.4 | 2024-05-22 | F |
| KAUFMAN STEPHEN P | Director | 9,192 | 2010-05-20 | A |
| Bell Michael Adam | Director | 8,192 | 2010-05-20 | A |
| MANNING PETER J | Director | 6,548 | 2011-05-25 | A |
| Shropshire Thomas B Jr. | Officer | 6,008.5 | 2026-08-28 | F |
| Meyer James | Officer | 5,792.808 | 2026-08-28 | F |
| WEISLER DION J | Director | 5,446.384 | 2026-05-20 | A |
| ULLIAN ELAINE | Director | 4,706 | 2019-05-22 | A |
| SHEEHAN STEPHEN G | Officer | 4,396 | 2010-03-05 | F |
| CHANDY RUBY R | Director | 3,463 | 2026-05-20 | A |
| MULLEN JAMES C | Director | 3,393 | 2025-05-21 | A |
| Holmes Joseph R. | Officer | 2,955.789 | 2026-08-28 | F |
| Spar Debora L | Director | 2,610 | 2026-05-20 | A |
| Keith R. Alexandra | Director | 2,602 | 2026-05-20 | A |
| HORNSTRA PETER E | Officer | 2,090 | 2021-02-25 | F |
| JOHNSON JENNIFER M | Director · Officer | 1,403 | 2026-05-20 | A |
| LEWENT JUDY C | Director | 1,290 | 2020-05-20 | A |
| Lynch Karen S | Director | 1,159 | 2026-05-20 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-26 | JOHNSON JENNIFER M | Grant / award (derivative) | 46.3 | — | 768.52 |
| 2026-09-26 | Keith R. Alexandra | Grant / award (derivative) | 46.3 | — | 1,377.65 |
| 2026-09-26 | Lynch Karen S | Grant / award (derivative) | 46.3 | — | 398.7 |
| 2026-09-26 | SPERLING SCOTT M | Grant / award (derivative) | 62.96 | — | 17,737.6 |
| 2026-09-26 | WEISLER DION J | Grant / award (derivative) | 55.56 | — | 2,846.55 |
| 2026-08-31 | Pettiti Gianluca | Option exercise (derivative) | 3,733 | $0.00 | 7,467 |
| 2026-08-31 | Pettiti Gianluca | Option exercise | 3,733 | $309.63 | 26,949.14 |
| 2026-08-31 | Pettiti Gianluca | Open-market sale | 400 | $614.38 | 23,216.14 |
| 2026-08-28 | Britt Lisa P. | Tax withholding | 85.096 | $622.18 | 14,390.579 |
| 2026-08-28 | Britt Lisa P. | Tax withholding | 105.403 | $622.18 | 14,475.675 |
| 2026-08-28 | Britt Lisa P. | Tax withholding | 116.04 | $622.18 | 14,581.078 |
| 2026-08-28 | Britt Lisa P. | Tax withholding | 87.03 | $622.18 | 14,697.118 |
| 2026-08-28 | Pettiti Gianluca | Tax withholding | 269.794 | $622.18 | 23,616.14 |
| 2026-08-28 | Pettiti Gianluca | Tax withholding | 249.003 | $622.18 | 23,885.934 |
| 2026-08-28 | Pettiti Gianluca | Tax withholding | 303.639 | $622.18 | 24,134.937 |
| 2026-08-28 | Pettiti Gianluca | Tax withholding | 212.256 | $622.18 | 24,438.576 |
| 2026-08-28 | Holmes Joseph R. | Tax withholding | 14.97 | $622.18 | 2,916.457 |
| 2026-08-28 | Holmes Joseph R. | Tax withholding | 11.447 | $622.18 | 2,931.427 |
| 2026-08-28 | Holmes Joseph R. | Tax withholding | 12.915 | $622.18 | 2,942.874 |
| 2026-08-28 | Holmes Joseph R. | Tax withholding | 10.567 | $622.18 | 2,955.789 |
| 2026-08-28 | Shafer Michael D | Tax withholding | 227.245 | $622.18 | 20,203.993 |
| 2026-08-28 | Shafer Michael D | Tax withholding | 189.533 | $622.18 | 20,431.238 |
| 2026-08-28 | Shafer Michael D | Tax withholding | 210.806 | $622.18 | 20,620.771 |
| 2026-08-28 | Shafer Michael D | Tax withholding | 162.457 | $622.18 | 20,831.577 |
| 2026-08-28 | Shropshire Thomas B Jr. | Tax withholding | 49.024 | $622.18 | 6,008.5 |
| 2026-08-28 | Meyer James | Tax withholding | 113.623 | $622.18 | 5,559.758 |
| 2026-08-28 | Meyer James | Tax withholding | 55.12 | $622.18 | 5,673.381 |
| 2026-08-28 | Meyer James | Tax withholding | 19.824 | $622.18 | 5,728.501 |
| 2026-08-28 | Meyer James | Tax withholding | 44.483 | $622.18 | 5,748.325 |
| 2026-08-28 | Meyer James | Tax withholding | 37.23 | $622.18 | 5,792.808 |
| 2026-08-28 | CASPER MARC N | Tax withholding | 531.851 | $622.18 | 122,668.741 |
| 2026-08-28 | CASPER MARC N | Tax withholding | 724.766 | $622.18 | 123,200.592 |
| 2026-08-24 | CASPER MARC N | Option exercise (derivative) | 275 | $0.00 | 0 |
| 2026-08-24 | CASPER MARC N | Open-market sale | 62 | $628.74 | 123,925.358 |
| 2026-08-24 | CASPER MARC N | Open-market sale | 79 | $628.01 | 123,987.358 |
| 2026-08-24 | CASPER MARC N | Open-market sale | 33 | $626.59 | 124,066.358 |
| 2026-08-24 | CASPER MARC N | Open-market sale | 101 | $625.41 | 124,099.358 |
| 2026-08-24 | CASPER MARC N | Option exercise | 275 | $309.63 | 124,200.358 |
| 2026-08-22 | Meyer James | Tax withholding | 30.945 | $629.27 | 5,830.038 |
| 2026-08-21 | CASPER MARC N | Option exercise (derivative) | 10,000 | $0.00 | 275 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.