Company · Ownership research

THERMO FISHER SCIENTIFIC INC. TMO

CIK 0000097745

Form 4 transactions dated Nov 1, 2023 to Nov 7, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 87 rows; the complete set is available through the API.

Insider filings on file run through Oct 30, 2026.

Insider purchases & sales

Purchased: $11.04K
Sold: $423.13M

Nov 1, 2023 – Oct 30, 2026
Available records · partial months are marked ·

202610 of 22 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Oct 28, 2026	Britt Lisa P. Sr. VP and Chief HR Officer	Sale	$2.00M 2,831 shares sold	19.67% sold Direct holding	▾
Aug 31, 2026	Pettiti Gianluca President & COO	Sale10b5-1 footnote	$2.54M 4,133 shares sold	Unavailable Direct holding	▾
Aug 24, 2026	CASPER MARC N Chairman & CEO · Director	Sale10b5-1 footnote	$172.44K 275 shares sold	0.22% sold Direct holding	▾
Aug 21, 2026	CASPER MARC N Chairman & CEO · Director	Sale10b5-1 footnote	$6.27M 10,000 shares sold	7.47% sold Direct holding	▾
Aug 20, 2026	CASPER MARC N Chairman & CEO · Director	Sale10b5-1 footnote	$6.29M 10,000 shares sold	7.47% sold Direct holding	▾
Aug 19, 2026	Britt Lisa P. Sr. VP and Chief HR Officer	Sale	$7.01M 11,440 shares sold	43.62% sold Direct holding	▾
Aug 11, 2026	Shafer Michael D Executive Vice President	Sale10b5-1 footnote	$15.30M 25,500 shares sold	Unavailable Direct holding	▾
Aug 7, 2026	Holmes Joseph R. VP & Chief Accounting Officer	Sale	$245.62K 420 shares sold	12.40% sold Direct holding	▾
Aug 7, 2026	CASPER MARC N Chairman & CEO · Director	Sale10b5-1 footnote	$161.18K 275 shares sold	0.22% sold Direct holding	▾
Aug 7, 2026	CASPER MARC N Chairman & CEO · Director	Sale10b5-1 footnote	$2.70M 4,608 shares sold	100.00% sold Indirect holding	▾

Showing 22 / 22 record groups in 2026. The complete set is available through the API.

THERMO FISHER SCIENTIFIC INC. · TMO

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 22 of 22 purchase / sale groups and 30 of 87 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"TMO","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.