Williamson Stephen (CIK 0001648929)

Latest company ownership

Shares held
12,674
Last filed at
Nov 17, 2025
Confidence Score
45.6
2025Q4
Confidence Score History
2018Q1 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Aug 28, 2025 Sep 2, 2025 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -783 -0.54% ✗ $383.6K
Feb 28, 2025 Mar 4, 2025 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,616 -3.41% ✗ $855K
Feb 3, 2025 Feb 5, 2025 THERMO FISHER SCIENTIFIC INC. CFO Sell 7.5 -19,650 -22.61% ✓ $11.6M
Aug 28, 2024 Aug 29, 2024 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -541 -0.69% ✗ $331.7K
Aug 23, 2024 Aug 27, 2024 THERMO FISHER SCIENTIFIC INC. CFO Sell 32.5 -406 -0.99% ✗ $246.2K
May 13, 2024 May 15, 2024 THERMO FISHER SCIENTIFIC INC. CFO Sell 2.5 -25,222 -37.50% ✓ $13M
Feb 28, 2024 Feb 29, 2024 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -771 -1.67% ✗ $441.2K
Feb 23, 2024 Feb 26, 2024 THERMO FISHER SCIENTIFIC INC. CFO Sell 32.5 -408 -0.88% ✗ $230.6K
Aug 25, 2023 Aug 29, 2023 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -902 -0.92% ✗ $489.7K
Aug 23, 2023 Aug 25, 2023 THERMO FISHER SCIENTIFIC INC. CFO Sell 32.5 -406 -0.88% ✗ $221.4K
Jul 31, 2023 Aug 2, 2023 THERMO FISHER SCIENTIFIC INC. CFO Sell 2.5 -29,100 -28.37% ✓ $16.1M
Feb 28, 2023 Mar 2, 2023 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -835 -1.78% ✗ $452.4K
Feb 22, 2023 Feb 24, 2023 THERMO FISHER SCIENTIFIC INC. CFO Sell 97.5 +5,045 12.05% ✗ $908.5K
Aug 25, 2022 Aug 29, 2022 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,282 -2.94% ✗ $734.9K
Aug 23, 2022 Aug 24, 2022 THERMO FISHER SCIENTIFIC INC. CFO Sell 32.5 -311 -0.71% ✗ $178.2K
Aug 12, 2022 Aug 16, 2022 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -27,300 -4.88% ✓ $16.4M
Feb 25, 2022 Mar 1, 2022 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,121 -2.49% ✗ $616.4K
Feb 23, 2022 Feb 25, 2022 THERMO FISHER SCIENTIFIC INC. CFO Sell 97.5 +4,844 12.04% ✗ $811.9K
Nov 2, 2021 Nov 3, 2021 THERMO FISHER SCIENTIFIC INC. CFO Sell 2.5 -22,550 -35.92% ✓ $14.4M
Aug 26, 2021 Aug 30, 2021 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,285 -3.10% ✗ $707.5K
Aug 25, 2021 Aug 26, 2021 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -469 -1.12% ✗ $257K
Aug 23, 2021 Aug 24, 2021 THERMO FISHER SCIENTIFIC INC. CFO Sell 40.0 -187 -0.44% ✗ $103.3K
Feb 25, 2021 Mar 1, 2021 THERMO FISHER SCIENTIFIC INC. CFO Sell 17.5 -2,415 -5.42% ✗ $1.1M
Feb 23, 2021 Feb 25, 2021 THERMO FISHER SCIENTIFIC INC. CFO Sell 97.5 +9,419 26.79% ✗ $355.6K
Aug 27, 2020 Aug 31, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,438 -3.87% ✗ $607.8K
Aug 25, 2020 Aug 27, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -797 -2.10% ✗ $338.3K
Jul 29, 2020 Jul 31, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 16.3 -19,800 -34.26% ✗ $8.1M
Jun 1, 2020 Jun 2, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -2,500 -6.17% ✓ $870K
Mar 4, 2020 Mar 5, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 15.0 -8,700 -17.69% ✓ $2.8M
Mar 2, 2020 Mar 4, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -2,500 -5.82% ✓ $727.6K
Feb 27, 2020 Feb 28, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,287 -2.91% ✗ $382.3K
Feb 25, 2020 Feb 27, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 97.5 +9,874 28.70% ✗ $597.3K
Feb 3, 2020 Feb 5, 2020 THERMO FISHER SCIENTIFIC INC. CFO Sell 17.5 -3,268 -8.68% ✗ $1M
Aug 27, 2019 Aug 29, 2019 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,329 -3.41% ✗ $365.1K
Aug 24, 2019 Aug 27, 2019 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,030 -2.57% ✗ $277.9K
Jun 3, 2019 Jun 4, 2019 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -2,500 -5.88% ✓ $670.7K
Mar 4, 2019 Mar 5, 2019 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -2,500 -5.55% ✓ $665K
Feb 28, 2019 Mar 1, 2019 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,000 -2.17% ✗ $259.6K
Feb 26, 2019 Feb 28, 2019 THERMO FISHER SCIENTIFIC INC. CFO Sell 97.5 +11,405 32.94% ✗ $512.6K
Dec 7, 2018 Dec 11, 2018 THERMO FISHER SCIENTIFIC INC. CFO Sell 10.0 -9,500 -21.53% ✓ $2.3M
Aug 28, 2018 Aug 30, 2018 THERMO FISHER SCIENTIFIC INC. CFO Sell 22.5 -645 -1.83% ✗ $153.5K
Aug 24, 2018 Aug 28, 2018 THERMO FISHER SCIENTIFIC INC. CFO Sell 20.0 -1,696 -4.59% ✗ $399.1K
Jun 4, 2018 Jun 4, 2018 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -2,500 -6.33% ✓ $530K
Mar 5, 2018 Mar 6, 2018 THERMO FISHER SCIENTIFIC INC. CFO Sell 30.0 -2,500 -5.96% ✓ $511.5K
Feb 27, 2018 Mar 1, 2018 THERMO FISHER SCIENTIFIC INC. CFO Sell 97.5 +11,818 39.20% ✗ $394.4K
Feb 23, 2018 Feb 27, 2018 THERMO FISHER SCIENTIFIC INC. CFO Sell 22.5 -594 -1.93% ✗ $125.8K