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NYSE · HEALTHCARE · Holders

Thermo Fisher Scientific Inc (TMO) Institutional Ownership & Insider Trading History

Recent insider purchases and sales for TMO from Form 4 filings. Institutional holdings surface here when ownership sources publish.

Section freshness

Price Jun 23, 4:00 PM EDT · Statements Mar 30, 8:00 PM EDT

Source timingDetails

Data freshness

Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.

Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.

PriceLive
Last traded •
Source: Market data provider
Fundamentalsevery 1 day
Provider checked •
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Analystevery 1 hr
Provider checked •
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Newsevery 15 min
Latest item •
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Ownership read

TMO insider sentiment: Net selling.

41 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.

Review insider tradesView institutions

Insider flow

TMO

Purchases—
Sales4.49M

Directional bars ignore awards, gifts, conversions, and tax withholding rows.

Top holder

—

Institutional data pending

Insider stance

Net selling

$2.30B sold / — bought

Latest filing

May 20, 2026

Most recent holder or insider filing date

Filings shown

120

0 holder / 120 insider

Holder rows
Pending
Market data source
Latest filing
May 20, 2026
Most recent holder or insider filing date
Increased / initiated
Pending
0 decreased
Insider rows
120
Market data source

Recent insider transactions

Thermo Fisher Scientific Inc (TMO) Form 4 filings

Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.

Keith R. Alexandra

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
2.60K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

WEISLER DION J

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
5.45K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

WEISLER DION J

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
4.95K
% company
<0.01%
Price
$451.79
Value
$2,235,005

Filed May 20, 2026

Spar Debora L

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
2.61K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

Jacks Tyler

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
9.46K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

CHANDY RUBY R

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
3.46K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

Lynch Karen S

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
1.16K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

Chai Nelson

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
15.32K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

HARRIS C MARTIN

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
9.53K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

SPERLING SCOTT M

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
69.48K
% company
0.02%
Price
No cash value
Value
No cash value

Filed May 20, 2026

JOHNSON JENNIFER M

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
1.40K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 20, 2026

Pettiti Gianluca

SaleOpen-market or direct sale reported on Form 4.
Shares
25.05K
% company
<0.01%
Price
$462.66
Value
$11,590,096

Filed Apr 27, 2026

Keith R. Alexandra

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
1.27K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Mar 28, 2026

WEISLER DION J

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
2.72K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Mar 28, 2026

Lynch Karen S

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
291
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Mar 28, 2026

SPERLING SCOTT M

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
17.59K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Mar 28, 2026

JOHNSON JENNIFER M

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
661
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Mar 28, 2026

Shafer Michael D

SaleOpen-market or direct sale reported on Form 4.
Shares
20.95K
% company
<0.01%
Price
$499.40
Value
$10,462,430

Filed Mar 11, 2026

CASPER MARC N

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
40.55K
% company
0.01%
Price
No cash value
Value
No cash value

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
123.92K
% company
0.03%
Price
$519.74
Value
$64,408,780

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
124.19K
% company
0.03%
Price
$519.13
Value
$64,470,236

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
124.70K
% company
0.03%
Price
$517.83
Value
$64,575,990

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
124.81K
% company
0.03%
Price
$516.73
Value
$64,493,588

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
125.01K
% company
0.03%
Price
$515.64
Value
$64,461,188

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
125.36K
% company
0.03%
Price
$514.71
Value
$64,524,046

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
125.93K
% company
0.03%
Price
$513.71
Value
$64,691,500

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.06K
% company
0.03%
Price
$512.73
Value
$65,149,012

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.47K
% company
0.03%
Price
$511.78
Value
$65,238,644

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.69K
% company
0.03%
Price
$509.66
Value
$65,077,466

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.79K
% company
0.03%
Price
$507.54
Value
$64,857,014

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.84K
% company
0.03%
Price
$505.76
Value
$64,658,887

Filed Mar 5, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.91K
% company
0.03%
Price
$503.66
Value
$64,420,632

Filed Mar 5, 2026

CASPER MARC N

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
127.92K
% company
0.03%
Price
$309.63
Value
$39,609,418

Filed Mar 5, 2026

CASPER MARC N

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
44.55K
% company
0.01%
Price
No cash value
Value
No cash value

Filed Mar 4, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
123.92K
% company
0.03%
Price
$516.75
Value
$64,038,244

Filed Mar 4, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
124.04K
% company
0.03%
Price
$515.77
Value
$63,977,658

Filed Mar 4, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
124.16K
% company
0.03%
Price
$514.86
Value
$63,926,047

Filed Mar 4, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
124.37K
% company
0.03%
Price
$513.63
Value
$63,882,218

Filed Mar 4, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
125.19K
% company
0.03%
Price
$512.92
Value
$64,211,942

Filed Mar 4, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
126.43K
% company
0.03%
Price
$511.80
Value
$64,706,874

Filed Mar 4, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.80K
% company
0.03%
Price
$510.71
Value
$65,268,738

Filed Mar 4, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
128.48K
% company
0.03%
Price
$509.89
Value
$65,509,647

Filed Mar 4, 2026

CASPER MARC N

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
128.93K
% company
0.03%
Price
$309.63
Value
$39,919,048

Filed Mar 4, 2026

CASPER MARC N

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
49.55K
% company
0.01%
Price
No cash value
Value
No cash value

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
123.92K
% company
0.03%
Price
$509.62
Value
$63,154,659

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
124.05K
% company
0.03%
Price
$508.95
Value
$63,132,703

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
124.80K
% company
0.03%
Price
$507.90
Value
$63,387,952

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
125.73K
% company
0.03%
Price
$506.74
Value
$63,714,954

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
126.18K
% company
0.03%
Price
$504.06
Value
$63,603,803

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
126.30K
% company
0.03%
Price
$502.59
Value
$63,478,625

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
126.42K
% company
0.03%
Price
$501.95
Value
$63,458,025

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
126.78K
% company
0.03%
Price
$500.55
Value
$63,461,231

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.17K
% company
0.03%
Price
$499.75
Value
$63,550,709

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
127.41K
% company
0.03%
Price
$498.14
Value
$63,465,527

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
128.09K
% company
0.03%
Price
$496.84
Value
$63,637,751

Filed Mar 3, 2026

CASPER MARC N

SaleOpen-market or direct sale reported on Form 4.
Shares
128.56K
% company
0.03%
Price
$495.29
Value
$63,676,959

Filed Mar 3, 2026

CASPER MARC N

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
128.93K
% company
0.03%
Price
$309.63
Value
$39,919,048

Filed Mar 3, 2026

Holmes Joseph R.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
2.97K
% company
<0.01%
Price
$521.11
Value
$1,545,612

Filed Feb 28, 2026

Holmes Joseph R.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
2.97K
% company
<0.01%
Price
$521.11
Value
$1,548,218

Filed Feb 28, 2026

Holmes Joseph R.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
3.02K
% company
<0.01%
Price
$521.11
Value
$1,571,147

Filed Feb 28, 2026

Holmes Joseph R.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
3.07K
% company
<0.01%
Price
$521.11
Value
$1,600,329

Filed Feb 28, 2026

Britt Lisa P.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
14.78K
% company
<0.01%
Price
$521.11
Value
$7,704,090

Filed Feb 28, 2026

Britt Lisa P.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
14.87K
% company
<0.01%
Price
$521.11
Value
$7,748,906

Filed Feb 28, 2026

Shafer Michael D

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
22.56K
% company
<0.01%
Price
$521.11
Value
$11,754,678

Filed Feb 28, 2026

Shafer Michael D

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
22.81K
% company
<0.01%
Price
$521.11
Value
$11,885,998

Filed Feb 28, 2026

Shafer Michael D

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
23.27K
% company
<0.01%
Price
$521.11
Value
$12,128,835

Filed Feb 28, 2026

Pettiti Gianluca

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
25.45K
% company
<0.01%
Price
$521.11
Value
$13,262,771

Filed Feb 28, 2026

Pettiti Gianluca

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
25.78K
% company
<0.01%
Price
$521.11
Value
$13,435,779

Filed Feb 28, 2026

Lowery Frederick M.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
15.04K
% company
<0.01%
Price
$521.11
Value
$7,839,579

Filed Feb 28, 2026

Lowery Frederick M.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
15.31K
% company
<0.01%
Price
$521.11
Value
$7,977,152

Filed Feb 28, 2026

Lowery Frederick M.

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
15.83K
% company
<0.01%
Price
$521.11
Value
$8,249,171

Filed Feb 28, 2026

Williamson Stephen

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
32.50K
% company
<0.01%
Price
$521.11
Value
$16,935,554

Filed Feb 28, 2026

Williamson Stephen

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
32.75K
% company
<0.01%
Price
$521.11
Value
$17,064,268

Filed Feb 28, 2026

Lagarde Michel

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
85.15K
% company
0.02%
Price
$521.11
Value
$44,373,038

Filed Feb 28, 2026

Lagarde Michel

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
85.51K
% company
0.02%
Price
$521.11
Value
$44,560,637

Filed Feb 28, 2026

CASPER MARC N

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
123.92K
% company
0.03%
Price
$521.11
Value
$64,578,557

Filed Feb 28, 2026

CASPER MARC N

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
125.14K
% company
0.03%
Price
$521.11
Value
$65,210,142

Filed Feb 28, 2026

Britt Lisa P.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
5.14K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Britt Lisa P.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
15.13K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Britt Lisa P.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
13.96K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Shafer Michael D

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
13.70K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Shafer Michael D

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
23.37K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Shafer Michael D

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
20.24K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Holmes Joseph R.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
985
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Holmes Joseph R.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
3.08K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Holmes Joseph R.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
2.75K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Williamson Stephen

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
33.42K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Shropshire Thomas B Jr.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
4.28K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Shropshire Thomas B Jr.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
6.06K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Pettiti Gianluca

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
16.27K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Pettiti Gianluca

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
26.52K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Pettiti Gianluca

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
22.81K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Lowery Frederick M.

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
15.94K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Lagarde Michel

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
86.35K
% company
0.02%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

CASPER MARC N

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
32.11K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

CASPER MARC N

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
128.61K
% company
0.03%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

CASPER MARC N

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
121.28K
% company
0.03%
Price
No cash value
Value
No cash value

Filed Feb 25, 2026

Pettiti Gianluca

SaleOpen-market or direct sale reported on Form 4.
Shares
20.75K
% company
<0.01%
Price
$541.20
Value
$11,230,982

Filed Feb 9, 2026

JOHNSON JENNIFER M

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
595
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Dec 31, 2025

Keith R. Alexandra

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
1.20K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Dec 31, 2025

WEISLER DION J

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
2.64K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Dec 31, 2025

Lynch Karen S

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
225
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Dec 31, 2025

SPERLING SCOTT M

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
17.50K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Dec 31, 2025

SPERLING SCOTT M

GiftGift transfer. Usually non-cash and not an open-market sale.
Shares
68.98K
% company
0.02%
Price
Non-cash
Value
Non-cash

Filed Dec 10, 2025

Lagarde Michel

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
—
% company
—
Price
No cash value
Value
No cash value

Filed Dec 4, 2025

Lagarde Michel

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
—
% company
—
Price
No cash value
Value
No cash value

Filed Dec 4, 2025

Lagarde Michel

SaleOpen-market or direct sale reported on Form 4.
Shares
84.12K
% company
0.02%
Price
$563.56
Value
$47,404,977

Filed Dec 4, 2025

Lagarde Michel

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
106.16K
% company
0.03%
Price
$132.66
Value
$14,083,584

Filed Dec 4, 2025

Lagarde Michel

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
84.12K
% company
0.02%
Price
$105.17
Value
$8,846,585

Filed Dec 4, 2025

Lagarde Michel

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
18.64K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Dec 3, 2025

Lagarde Michel

SaleOpen-market or direct sale reported on Form 4.
Shares
65.48K
% company
0.02%
Price
$584.11
Value
$38,247,523

Filed Dec 3, 2025

Lagarde Michel

SaleOpen-market or direct sale reported on Form 4.
Shares
68.00K
% company
0.02%
Price
$583.33
Value
$39,667,023

Filed Dec 3, 2025

Showing 112 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders

Frequently asked

Common questions.

Who are the largest TMO shareholders?

Thermo Fisher Scientific Inc (TMO) institutional holders are ranked by reported share count when ownership data publishes filing rows.

What is institutional ownership of TMO?

Thermo Fisher Scientific Inc (TMO) institutional ownership appears when filing-based market data returns holder rows. TECHi does not fill unavailable ownership fields with placeholder shareholders.

Where can I see Thermo Fisher Scientific Inc insider transactions?

Thermo Fisher Scientific Inc (TMO) has 120 Form 4 insider transactions on file, most recently on May 20, 2026, separated into purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are distinguished from open-market trades.

Are TMO insiders buying or selling?

Recent TMO insider activity reads Net selling: 41 sales and 0 purchases. Awards, gifts, conversions, and tax withholding are listed separately because they do not carry the same signal as open-market trades.

Who is the most active TMO insider?

CASPER MARC N is the most active TMO insider by absolute share movement, with 5.21 million shares moving across the filing history. Review the action labels before treating that activity as buying or selling.