Thermo Fisher Scientific Inc. (TMO) Insider Ownership

Historic Insider Ownership Trends

As of March 23, 2026, the three largest insider holders of TMO are Marc N Casper (Chairman Ceo, 123.93K shares), Michel Lagarde (Executive Vice President, 85.15K shares), Scott M Sperling (Director, 68.98K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Marc N Casper Chairman Ceo 123,925 0 09 Mar, 2026
Michel Lagarde Executive Vice President 85,151 0 02 Mar, 2026
Scott M Sperling 68,980 0 11 Dec, 2025
Mark Stevenson Retiring Executive Vp Coo 62,141 0 01 Mar, 2022
Stephen Williamson Retiring Sr. Vp And Cfo 32,499 0 02 Mar, 2026
Gianluca Pettiti President Coo 25,451 0 02 Mar, 2026
Michael D Shafer Executive Vice President 22,557 0 02 Mar, 2026
Michael D Shafer Executive Vice President 20,950 0 12 Mar, 2026
Frederick M. Lowery Executive Vice President 15,044 0 02 Mar, 2026
Nelson Chai 14,817 0 22 May, 2025
Jim P Manzi 14,807 0 07 Feb, 2023
Lisa P. Britt Sr. Vp And Chief Hr Officer 14,784 0 02 Mar, 2026
Marc N Casper Chairman Ceo 0 14,608 12 Nov, 2024
Stephen Williamson Sr. Vp And Cfo 0 12,674 15 May, 2024
Michael A Boxer Svp And General Counsel 10,816 0 11 Mar, 2025
Thomas J Lynch 10,257 0 08 Nov, 2021
Lars Rebien Sorensen 9,233 0 23 May, 2024
C Martin Harris 9,033 0 22 May, 2025
Tyler Jacks 8,963 0 22 May, 2025
Thomas B Jr. Shropshire Svp And General Counsel 6,058 0 27 Feb, 2026
Dion J Weisler 5,028 0 22 May, 2025
James C Mullen 3,393 0 22 May, 2025
Joseph R. Holmes Vp Chief Accounting Officer 2,966 0 02 Mar, 2026
Ruby R Chandy 2,964 0 22 May, 2025
Debora L Spar 2,111 0 22 May, 2025
R. Alexandra Keith 2,103 0 22 May, 2025
Jennifer M Johnson 904 0 22 May, 2025
Karen S Lynch 660 0 22 May, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
11 Mar, 2026 Michael D Shafer Common Stock D 1,607 $499.40 20,950 D S
05 Mar, 2026 Marc N Casper Common Stock A 4,000 $309.63 127,925 D M
05 Mar, 2026 Marc N Casper Common Stock D 20 $503.66 127,905 D S
05 Mar, 2026 Marc N Casper Common Stock D 60 $505.76 127,845 D S
05 Mar, 2026 Marc N Casper Common Stock D 58 $507.54 127,787 D S
05 Mar, 2026 Marc N Casper Common Stock D 99 $509.66 127,688 D S
05 Mar, 2026 Marc N Casper Common Stock D 214 $511.78 127,474 D S
05 Mar, 2026 Marc N Casper Common Stock D 411 $512.73 127,063 D S
05 Mar, 2026 Marc N Casper Common Stock D 1,133 $513.71 125,930 D S
05 Mar, 2026 Marc N Casper Common Stock D 570 $514.71 125,360 D S
05 Mar, 2026 Marc N Casper Common Stock D 348 $515.64 125,012 D S
05 Mar, 2026 Marc N Casper Common Stock D 201 $516.73 124,811 D S
05 Mar, 2026 Marc N Casper Common Stock D 106 $517.83 124,705 D S
05 Mar, 2026 Marc N Casper Common Stock D 516 $519.13 124,189 D S
05 Mar, 2026 Marc N Casper Common Stock D 264 $519.74 123,925 D S
05 Mar, 2026 Marc N Casper Stock Option (Right to Buy) D 4,000 $0.00 40,550 D M
03 Mar, 2026 Marc N Casper Common Stock A 5,000 $309.63 128,925 D M
03 Mar, 2026 Marc N Casper Common Stock D 360 $495.29 128,565 D S
03 Mar, 2026 Marc N Casper Common Stock D 480 $496.84 128,085 D S
03 Mar, 2026 Marc N Casper Common Stock D 680 $498.14 127,405 D S