21 insiders reported 340 Form 4 transactions for THERMO FISHER SCIENTIFIC INC. (TMO) over the past 18 months (most recent 2026-08-20). Recent activity: Britt Lisa P. (Sr. VP and Chief HR Officer) Sell 11,440 shares, Britt Lisa P. (Sr. VP and Chief HR Officer) Buy 11,440 shares, Shafer Michael D (Executive Vice President) Buy 11,200 shares, Shafer Michael D (Executive Vice President) Sell 11,200 shares, Shafer Michael D (Executive Vice President) Buy 14,300 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-20 | Britt Lisa P. | Sr. VP and Chief HR Officer | Sell | 11,440 | $7.0M |
| 2026-08-20 | Britt Lisa P. | Sr. VP and Chief HR Officer | Buy | 11,440 | $4.8M |
| 2026-08-13 | Shafer Michael D | Executive Vice President | Buy | 11,200 | $3.5M |
| 2026-08-13 | Shafer Michael D | Executive Vice President | Sell | 11,200 | $6.7M |
| 2026-08-13 | Shafer Michael D | Executive Vice President | Buy | 14,300 | $6.0M |
| 2026-08-13 | Shafer Michael D | Executive Vice President | Sell | 14,300 | $8.6M |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 4 | $2,323 |
| 2026-08-10 | Holmes Joseph R. | VP & Chief Accounting Officer | Buy | 420 | $130,045 |
| 2026-08-10 | Holmes Joseph R. | VP & Chief Accounting Officer | Sell | 420 | $245,620 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 6 | $3,464 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 4 | $2,317 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 2 | $1,159 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Buy | 275 | $85,148 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 94 | $54,273 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 5 | $2,909 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 2 | $1,164 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 18 | $10,501 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 63 | $36,817 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 30 | $17,563 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 58 | $34,019 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 12 | $7,052 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 32 | $18,864 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 29 | $17,132 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 7 | $4,153 |
| 2026-08-10 | CASPER MARC N | Chairman & CEO | Sell | 3 | $1,742 |
Source: SEC Form 4 filings · as of 2026-08-20