X0508 4 2026-02-25 0000097745 THERMO FISHER SCIENTIFIC INC. TMO 0001648929 Williamson Stephen 168 THIRD AVENUE WALTHAM MA 02451 1 Sr. VP and CFO 0 Common Stock 2026-02-25 4 A 0 1534 0 A 33421.193 D Common Stock 12674 I By SLAT Shares represent a performance-based restricted stock unit award granted on February 19, 2025. On February 25, 2026, the Compensation Committee certified achievement of the applicable performance criteria. The award vests in three equal tranches on February 28, 2026, 2027 and 2028, in accordance with the terms of the award agreement. The reporting person disclaims beneficial ownership of the securities reported herein as indirectly beneficially owned, except to the extent of any pecuniary interest therein. /s/ Melodie T. Morin, Attorney-in-Fact for Stephen Williamson 2026-02-27