According to recent filings covering the 90 days ending December 12, 2025, the three most significant insider holders at Thermo Fisher Scientific are Chairman & CEO Marc N Casper (128.37K shares), Executive Vice President & COO Michel Lagarde (84.12K shares), Sr. VP And Cfo Stephen Williamson (44.56K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Marc N Casper | Chairman & CEO | 128,370 | 28 Oct, 2025 |
| Michel Lagarde | Executive Vice President & COO | 84,117 | 05 Dec, 2025 |
| Scott M Sperling | 68,980 | 11 Dec, 2025 | |
| Mark Stevenson | Retiring Executive VP & COO | 62,141 | 01 Mar, 2022 |
| Stephen Williamson | Sr. VP And Cfo | 44,561 | 17 Nov, 2025 |
| Syed A. Jafry | Sr. Vice President | 22,349 | 01 Mar, 2021 |
| Gianluca Pettiti | Executive Vice President | 21,152 | 12 Nov, 2025 |
| Michael D Shafer | Executive Vice President | 18,731 | 26 Nov, 2025 |
| Nelson Chai | 14,817 | 22 May, 2025 | |
| Jim P Manzi | 14,807 | 07 Feb, 2023 | |
| Frederick M. Lowery | Executive Vice President | 14,367 | 03 Dec, 2025 |
| Lisa P. Britt | Sr. VP And Chief HR Officer | 13,087 | 14 Nov, 2025 |
| Michael A Boxer | SVP And General Counsel | 10,816 | 11 Mar, 2025 |
| Thomas J Lynch | 10,257 | 08 Nov, 2021 | |
| Lars Rebien Sorensen | 9,233 | 23 May, 2024 | |
| C Martin Harris | 9,033 | 22 May, 2025 | |
| Tyler Jacks | 8,963 | 22 May, 2025 | |
| Thomas B Jr. Shropshire | SVP And General Counsel | 5,080 | 03 Dec, 2025 |
| Dion J Weisler | 5,028 | 22 May, 2025 | |
| James C Mullen | 3,393 | 22 May, 2025 | |
| Ruby R Chandy | 2,964 | 22 May, 2025 | |
| Joseph R. Holmes | VP & Chief Accounting Officer | 2,319 | 02 Sep, 2025 |
| Debora L Spar | 2,111 | 22 May, 2025 | |
| R. Alexandra Keith | 2,103 | 22 May, 2025 | |
| Peter E Hornstra | VP & Chief Accounting Officer | 1,962 | 01 Mar, 2021 |
| Jennifer M Johnson | 904 | 22 May, 2025 | |
| Karen S Lynch | 660 | 22 May, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 10 Dec, 2025 | Scott M Sperling | Common Stock | D | 4,386 | $0.00 | 68,980 | D | G |
| 04 Dec, 2025 | Michel Lagarde | Common Stock | A | 18,637 | $105.17 | 84,117 | D | M |
| 04 Dec, 2025 | Michel Lagarde | Common Stock | A | 22,046 | $132.66 | 106,163 | D | M |
| 04 Dec, 2025 | Michel Lagarde | Common Stock | D | 22,046 | $563.56 | 84,117 | D | S |
| 02 Dec, 2025 | Thomas B Jr. Shropshire | Common Stock | D | 337 | $580.37 | 5,080 | D | F |
| 02 Dec, 2025 | Michel Lagarde | Common Stock | A | 36,000 | $105.17 | 59,480 | D | M |
| 02 Dec, 2025 | Michel Lagarde | Common Stock | D | 30,000 | $581.92 | 29,480 | D | S |
| 03 Dec, 2025 | Michel Lagarde | Common Stock | A | 68,000 | $105.17 | 97,480 | D | M |
| 03 Dec, 2025 | Michel Lagarde | Common Stock | D | 29,479 | $583.33 | 68,001 | D | S |
| 03 Dec, 2025 | Michel Lagarde | Common Stock | D | 2,521 | $584.11 | 65,480 | D | S |
| 01 Dec, 2025 | Frederick M. Lowery | Common Stock | A | 6,913 | $253.99 | 21,280 | D | M |
| 01 Dec, 2025 | Frederick M. Lowery | Common Stock | D | 6,913 | $597.68 | 14,367 | D | S |
| 02 Dec, 2025 | Frederick M. Lowery | Common Stock | A | 6,912 | $253.99 | 21,279 | D | M |
| 02 Dec, 2025 | Frederick M. Lowery | Common Stock | D | 6,912 | $581.94 | 14,367 | D | S |
| 25 Nov, 2025 | Michael D Shafer | Common Stock | A | 8,475 | $253.99 | 27,206 | D | M |
| 25 Nov, 2025 | Michael D Shafer | Common Stock | D | 8,475 | $600.00 | 18,731 | D | S |
| 25 Nov, 2025 | Michael D Shafer | Common Stock | A | 2,250 | $294.02 | 20,981 | D | M |
| 25 Nov, 2025 | Michael D Shafer | Common Stock | D | 2,250 | $600.00 | 18,731 | D | S |
| 14 Nov, 2025 | Stephen Williamson | Common Stock | D | 433 | $0.00 | 31,887 | D | G |
| 13 Nov, 2025 | Michel Lagarde | Common Stock | A | 4,638 | $253.99 | 28,118 | D | M |