Williamson Stephen has filed 41 insider transactions across 2 companies since February 2024.
Most recent transaction: a tax payment of 674 shares of THERMO FISHER SCIENTIFIC INC. ($TMO) on February 28, 2026.
Activity breakdown: 0 open-market purchases and 3 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 28, 2026 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Retiring Sr. VP and CFO | F | Common Stock | 675 | $521.11 | 45,420.4690 | 445,000,000 | 1.46% | 0.00% |
| Feb. 28, 2026 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Retiring Sr. VP and CFO | F | Common Stock | 247 | $521.11 | 45,173.4000 | 445,000,000 | 0.54% | 0.00% |
| Feb. 25, 2026 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | A | Common Stock | 1534 | $0.00 | 46,095.1930 | 445,000,000 | 3.44% | 0.00% |
| Jan. 2, 2026 | HONEYWELL INTERNATIONAL INC | $HON | Williamson Stephen | Director | A | Deferred Compensation (Phantom Shares) | 306 | $195.88 | 1,028.5077 | 635,300,000 | 42.41% | 0.00% |
| Nov. 14, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | G | Common Stock | 433 | $0.00 | 44,561.1930 | 445,000,000 | 0.96% | 0.00% |
| Oct. 1, 2025 | HONEYWELL INTERNATIONAL INC | $HON | Williamson Stephen | Director | A | Deferred Compensation (Phantom Shares) | 161 | $210.18 | 676.3872 | 957,600,000 | 31.13% | 0.00% |
| Aug. 28, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 220 | $489.74 | 45,343.2820 | 444,000,000 | 0.48% | 0.00% |
| Aug. 28, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 215 | $489.74 | 45,562.7920 | 444,000,000 | 0.47% | 0.00% |
| Aug. 28, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 111 | $489.74 | 44,994.1930 | 444,000,000 | 0.25% | 0.00% |
| Aug. 28, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 238 | $489.74 | 45,105.3990 | 444,000,000 | 0.52% | 0.00% |
| July 1, 2025 | HONEYWELL INTERNATIONAL INC | $HON | Williamson Stephen | Director | A | Deferred Compensation (Phantom Shares) | 141 | $238.77 | 513.1345 | 649,800,000 | 38.02% | 0.00% |
| May 20, 2025 | HONEYWELL INTERNATIONAL INC | $HON | Williamson Stephen | Director | A | Restricted Stock Units | 580 | $0.00 | 580.0000 | 649,800,000 | 9999.99% | 0.00% |
| April 15, 2025 | HONEYWELL INTERNATIONAL INC | $HON | Williamson Stephen | Director | M | Restricted Stock Units | 83 | $0.00 | 0.0000 | 649,800,000 | 100.00% | 0.00% |
| April 15, 2025 | HONEYWELL INTERNATIONAL INC | $HON | Williamson Stephen | Director | M | Common Stock | 83 | $200.38 | 163.0000 | 649,800,000 | 103.75% | 0.00% |
| Feb. 28, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 1032 | $528.96 | 45,777.4660 | 444,000,000 | 2.21% | 0.00% |
| Feb. 28, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 584 | $528.96 | 46,809.7400 | 444,000,000 | 1.23% | 0.00% |
| Feb. 19, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | A | Common Stock | 6409 | $0.00 | 47,911.8090 | 444,000,000 | 15.44% | 0.00% |
| Feb. 19, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | A | Stock Option (Right to Buy) | 9398 | $0.00 | 9,398.0000 | 444,000,000 | 9999.99% | 0.00% |
| Feb. 19, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | A | Common Stock | 1533 | $0.00 | 41,502.8090 | 444,000,000 | 3.84% | 0.00% |
| Feb. 4, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | M | Stock Option (Right to Buy) | 9825 | $0.00 | 0.0000 | 444,000,000 | 100.00% | 0.00% |
| Feb. 3, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | M | Common Stock | 9825 | $253.99 | 49,794.8090 | 444,000,000 | 24.58% | 0.00% |
| Feb. 3, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | S | Common Stock | 9825 | $593.13 | 39,969.8090 | 444,000,000 | 19.73% | 0.00% |
| Feb. 4, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | M | Common Stock | 9825 | $253.99 | 49,794.8090 | 444,000,000 | 24.58% | 0.00% |
| Feb. 4, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | S | Common Stock | 9825 | $585.59 | 39,969.8090 | 444,000,000 | 19.73% | 0.00% |
| Feb. 3, 2025 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | M | Stock Option (Right to Buy) | 9825 | $0.00 | 9,825.0000 | 444,000,000 | 50.00% | 0.00% |
| Aug. 28, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 184 | $613.14 | 40,112.4420 | 443,000,000 | 0.46% | 0.00% |
| Aug. 28, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 143 | $613.14 | 39,969.8090 | 443,000,000 | 0.36% | 0.00% |
| Aug. 28, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 215 | $613.14 | 40,296.1720 | 443,000,000 | 0.53% | 0.00% |
| Aug. 23, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 406 | $606.12 | 40,510.8460 | 443,000,000 | 0.99% | 0.00% |
| May 28, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | G | Common Stock | 1112 | $0.00 | 40,916.9870 | 442,000,000 | 2.65% | 0.00% |
| May 13, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | M | Common Stock | 21925 | $210.68 | 79,924.9870 | 442,000,000 | 37.80% | 0.00% |
| May 14, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | G | Common Stock | 3297 | $0.00 | 54,702.9870 | 442,000,000 | 5.68% | 0.00% |
| May 13, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | M | Stock Option (Right to Buy) | 21925 | $0.00 | 0.0000 | 442,000,000 | 100.00% | 0.00% |
| May 14, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | G | Common Stock | 12674 | $0.00 | 42,028.9870 | 442,000,000 | 43.17% | 0.00% |
| May 14, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | G | Common Stock | 12674 | $0.00 | 42,028.9870 | 442,000,000 | 23.17% | 0.00% |
| May 13, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | S | Common Stock | 21925 | $591.27 | 57,999.9870 | 442,000,000 | 27.43% | 0.00% |
| Feb. 28, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 771 | $572.03 | 45,325.9870 | 442,000,000 | 1.67% | 0.00% |
| Feb. 23, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | F | Common Stock | 408 | $564.71 | 46,097.3460 | 442,000,000 | 0.88% | 0.00% |
| Feb. 21, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | A | Stock Option (Right to Buy) | 12250 | $0.00 | 12,250.0000 | 442,000,000 | 9999.99% | 0.00% |
| Feb. 21, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | A | Common Stock | 1966 | $0.00 | 46,750.6480 | 442,000,000 | 4.39% | 0.00% |
| Feb. 21, 2024 | THERMO FISHER SCIENTIFIC INC. | $TMO | Williamson Stephen | Sr. VP and CFO | A | Stock Option (Right to Buy) | 20000 | $0.00 | 20,000.0000 | 442,000,000 | 9999.99% | 0.00% |