Michael D. Shafer

CIK: 0002020619

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)6 (21.4%)

Position reduction

Option Exercises (M)4 (14.3%)

Derivative conversions

Awards (A)4 (14.3%)

Compensation grants

Other (G, F, J, C, D, …)14 (50.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

TMO

THERMO FISHER SCIENTIFIC INC.

Officer

Discretionary Trading P&L

Holdings

Transaction History (28 total)

TMO
THERMO FISHER SCIENTIFIC INC.
Aug 28, 2026
Tax Payment(F)
Direct
162 shares at avg. $622.18$101K
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 28, 2026
Tax Payment(F)
Direct
227 shares at avg. $622.18$141K
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 28, 2026
Tax Payment(F)
Direct
190 shares at avg. $622.18$118K
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 28, 2026
Tax Payment(F)
Direct
211 shares at avg. $622.18$131K
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 11, 2026
Exercise(M)
Direct
11.2K shares at avg. $309.63$3.5M
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 11, 2026
Sale(S)
Direct
14.3K shares at avg. $600.00$8.6M
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 11, 2026
Exercise(M)
Direct
14.3K shares at avg. $418.32$6.0M
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 11, 2026
Sale(S)
Direct
11.2K shares at avg. $600.00$6.7M
TMO
THERMO FISHER SCIENTIFIC INC.
Mar 11, 2026
Sale(S)
Direct
1.6K shares at avg. $499.40$803K
TMO
THERMO FISHER SCIENTIFIC INC.
Feb 28, 2026
Tax Payment(F)
Direct
466 shares at avg. $521.11$243K
TMO
THERMO FISHER SCIENTIFIC INC.
Feb 28, 2026
Tax Payment(F)
Direct
252 shares at avg. $521.11$131K
TMO
THERMO FISHER SCIENTIFIC INC.
Feb 28, 2026
Tax Payment(F)
Direct
98 shares at avg. $521.11$51K
TMO
THERMO FISHER SCIENTIFIC INC.
Feb 25, 2026
Award(A)
Direct
3.1K shares-
TMO
THERMO FISHER SCIENTIFIC INC.
Feb 25, 2026
Award(A)
Direct
1.6K shares-
TMO
THERMO FISHER SCIENTIFIC INC.
Nov 25, 2025
Sale(S)
Direct
2.3K shares at avg. $600.00$1.4M
TMO
THERMO FISHER SCIENTIFIC INC.
Nov 25, 2025
Exercise(M)
Direct
8.5K shares at avg. $253.99$2.2M
TMO
THERMO FISHER SCIENTIFIC INC.
Nov 25, 2025
Sale(S)
Direct
8.5K shares at avg. $600.00$5.1M
TMO
THERMO FISHER SCIENTIFIC INC.
Nov 25, 2025
Exercise(M)
Direct
2.3K shares at avg. $294.02$662K
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 28, 2025
Tax Payment(F)
Direct
162 shares at avg. $489.74$80K
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 28, 2025
Tax Payment(F)
Direct
114 shares at avg. $489.74$56K
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 28, 2025
Tax Payment(F)
Direct
176 shares at avg. $489.74$86K
TMO
THERMO FISHER SCIENTIFIC INC.
Aug 28, 2025
Tax Payment(F)
Direct
145 shares at avg. $489.74$71K
TMO
THERMO FISHER SCIENTIFIC INC.
Mar 3, 2025
Sale(S)
Direct
1.8K shares at avg. $530.92$945K
TMO
THERMO FISHER SCIENTIFIC INC.
Feb 28, 2025
Tax Payment(F)
Direct
245 shares at avg. $528.96$129K
TMO
THERMO FISHER SCIENTIFIC INC.
Feb 28, 2025
Tax Payment(F)
Direct
110 shares at avg. $528.96$58K

		Type	Shares	Price		Ownership
Aug 28, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	162	$622.18	$101,077	Direct
Aug 28, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	227	$622.18	$141,387	Direct
Aug 28, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	190	$622.18	$117,924	Direct
Aug 28, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	211	$622.18	$131,159	Direct
Aug 11, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Exercise(M)	11,200	$309.63	$3,467,856	Direct
Aug 11, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Sale(S)	14,300	$600.00	$8,580,000	Direct
Aug 11, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Exercise(M)	14,300	$418.32	$5,981,976	Direct
Aug 11, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Sale(S)	11,200	$600.00	$6,720,000	Direct
Mar 11, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Sale(S)	1,607	$499.40	$802,536	Direct
Feb 28, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	466	$521.11	$242,944	Direct
Feb 28, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	252	$521.11	$131,143	Direct
Feb 28, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	98	$521.11	$51,060	Direct
Feb 25, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Award(A)	3,129	-	$0	Direct
Feb 25, 2026	TMO THERMO FISHER SCIENTIFIC INC.	Award(A)	1,569	-	$0	Direct
Nov 25, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Sale(S)	2,250	$600.00	$1,350,000	Direct
Nov 25, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Exercise(M)	8,475	$253.99	$2,152,565	Direct
Nov 25, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Sale(S)	8,475	$600.00	$5,085,000	Direct
Nov 25, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Exercise(M)	2,250	$294.02	$661,545	Direct
Aug 28, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	162	$489.74	$79,562	Direct
Aug 28, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	114	$489.74	$55,882	Direct
Aug 28, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	176	$489.74	$86,428	Direct
Aug 28, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	145	$489.74	$71,037	Direct
Mar 3, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Sale(S)	1,780	$530.92	$945,038	Direct
Feb 28, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	245	$528.96	$129,378	Direct
Feb 28, 2025	TMO THERMO FISHER SCIENTIFIC INC.	Tax Payment(F)	110	$528.96	$58,064	Direct

1-25 of 28 transactions

About Shafer Michael D

Shafer Michael D (SEC CIK 0002020619) files insider reports with the SEC as Executive Vice President of THERMO FISHER SCIENTIFIC INC. (TMO).

Signal8 holds 9 ownership filings by Shafer Michael D, all Form 4s, filed between Feb 21, 2025 and Sep 1, 2026. Those filings report 28 transactions, from Feb 19, 2025 to Aug 28, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Shafer Michael D's filings is in WALTHAM, MA.

Recent filings by Shafer Michael D

Aug 28, 2026: Tax withholdings of TMO shares (4 lines, Form 4, code F).
Aug 11, 2026: Option exercise of TMO shares (Form 4, code M).
Aug 11, 2026: Open-market sale of TMO shares (Form 4, code S).
Aug 11, 2026: Option exercise of TMO shares (Form 4, code M).
Aug 11, 2026: Open-market sale of TMO shares (Form 4, code S).

Other insiders filing for THERMO FISHER SCIENTIFIC INC. (TMO)

SPERLING SCOTT M, Director
Britt Lisa P., Sr. VP and Chief HR Officer
WEISLER DION J, Director
Lynch Karen S, Director
Keith R. Alexandra, Director
JOHNSON JENNIFER M, Director

How to read Form 4 transaction codes