$TMO

$684.84 +$11.02 (1.64%) Live

$TMO Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 369.7M shares outstanding

Who owns TMO?

By type of holder

Institutions 90.7% Insiders 0.2% Everyone else 9.1%

Concentration Top 10 holders own 35.8%

BlackRock, Inc. 8.4% · Vanguard Capital Management LLC 6.6%

Institutional ownership

90.7%

+0.8 pts vs last qtr

Institutional holders

2,620

+4 vs last qtr

Net shares bought

+3.0M

by institutions in Q2 2026

New / sold out

201 / 197

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +5.1M
FMR LLC +3.3M

Biggest sellers in Q2 2026

Bank Of America Corp /de/ −1.6M
Price T Rowe Associates Inc /MD/ −1.2M

Who is planning to sell?

Notices of proposed sale, last 12 months

$173M

30 notices from 8 people

Shares covered

308.2K

0.08% of the company

Arranged in advance

44%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Lagarde Michel Former officer $73.8M
Casper Marc N Officer 10b5-1 $37M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

−4.8%

−0.54% a year

Each share's claim on the business

+5.0%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$20.5B vs $2.28B

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years83% 3–5 years3% 1–3 years8% Under 1 year6%

Quarterly turnover

7.8%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting TMO on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	30.9M	8.36%	+492.4K (+1.6%)	≤2021	0.2%
Shares held by quarter Peak holding30.9M (Q2'26) Change over 8 quarters+1.8M Share of the company8.360% BlackRock, Inc.'s full portfolio →
VC Vanguard Capital Management LLC	24.3M	6.57%	−4.5K (−0.0%)	≤2021	0.3%
Shares held by quarter Peak holding24.3M (Q1'26) Change over 8 quarters+24.3M Share of the company6.570% Vanguard Capital Management LLC's full portfolio →

BlackRock, Inc.

30.9M

% of company

8.36%

Change vs last qtr

+492.4K (+1.6%)

Held since

≤2021

Vanguard Capital Management LLC

24.3M

% of company

6.57%

Change vs last qtr

−4.5K (−0.0%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Thermo Fisher Scientific Inc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting TMO on Form N-PORT; together they hold 31.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$5.91B	11.8M	3.19%	0.26%	June 30, 2026
V5 Vanguard 500 Index Fund Vanguard Index Funds	$4.83B	9.6M	2.60%	0.29%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$5.91B

% of company

3.19%

% of the fund

0.26%

As of

June 30, 2026

Vanguard 500 Index Fund

Vanguard Index Funds

Position value

$4.83B

% of company

2.60%

% of the fund

0.29%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Thermo Fisher Scientific Inc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
CM Casper Marc N Insider	277.6K	0.08%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.080% Casper Marc N's insider activity →
LM Lagarde Michel Insider	85.2K	0.02%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.020% Lagarde Michel's insider activity →

Casper Marc N

Insider

277.6K

% of company

0.08%

Change vs last qtr

—

Held since

—

Lagarde Michel

Insider

85.2K

% of company

0.02%

Change vs last qtr

—

Held since

—

20 more holders behind a free account

See every insider and 5%+ holder of Thermo Fisher Scientific Inc.

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