Williamson Stephen 4

What Happened

• Stephen Williamson, Retiring Senior Vice President and Chief Financial Officer of Thermo Fisher Scientific (TMO), had 921.793 shares disposed on Feb 28, 2026 to satisfy tax withholding and/or exercise price obligations. The filing lists two withholding dispositions: 674.724 shares and 247.069 shares, each at $521.11 per share, for totals of $351,605 and $128,750 respectively (combined value ≈ $480,355).
• This was a tax-withholding/settlement-related disposition (transaction code F), not an open-market sale intended as investment activity.

Key Details

• Transaction date: 2026-02-28; Filing date: 2026-03-02 (filed within typical Form 4 reporting window).
• Price per share: $521.11.
• Shares disposed: 674.724 and 247.069 (total 921.793 shares); combined proceeds/value ≈ $480,355.
• Shares owned after the transaction: not specified in the provided filing.
• Footnote: the filer disclaims beneficial ownership of the reported securities as indirectly beneficially owned, except to the extent of any pecuniary interest.
• Transaction code: F — payment of exercise price or tax liability (common when shares are withheld to cover taxes on vested awards or exercised options).

Context

• These dispositions appear to be routine tax withholding related to equity vesting or option exercise (a cashless settlement/withholding), not a market sale that signals a personal investment decision. For derivative exercises, it's common for companies to withhold shares to satisfy tax obligations rather than sell shares on the open market.