Thermo Fisher Scientific Inc.
Thermo Fisher Scientific Inc. (TMO) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · TMO · as of Jun 8, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
97
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
Thermo Fisher Scientific Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
TMO insider buying and selling by quarter
TMO insider selling · TMO insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · TMO ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
TMO executive sell shares · TMO board member insider trading · TMO insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 20, 2026 | WEISLER DION J Director | Award | 499 | — | Form 4 |
| May 20, 2026 | WEISLER DION J Director | Other | 80.287 | $36K | Form 4 |
| May 20, 2026 | SPERLING SCOTT M Director | Award | 499 | — | Form 4 |
| May 20, 2026 | Spar Debora L Director | Award | 499 | — | Form 4 |
| May 20, 2026 | Lynch Karen S Director | Award | 499 | — | Form 4 |
| May 20, 2026 | Keith R. Alexandra Director | Award | 499 | — | Form 4 |
| May 20, 2026 | JOHNSON JENNIFER M Director | Award | 499 | — | Form 4 |
| May 20, 2026 | Jacks Tyler Director | Award | 499 | — | Form 4 |
| May 20, 2026 | HARRIS C MARTIN Director | Award | 499 | — | Form 4 |
| May 20, 2026 | CHANDY RUBY R Director | Award | 499 | — | Form 4 |
| May 20, 2026 | Chai Nelson Director | Award | 499 | — | Form 4 |
| Apr 27, 2026 | Pettiti Gianluca President & COO | Sale | 400 | $185K | Form 4 |
| Mar 11, 2026 | Shafer Michael D EVP | Sale | 1,607 | $803K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Option | 4,000 | $1.24M⚡ | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 20 | $10K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 60 | $30K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 58 | $29K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 99 | $50K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 214 | $110K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 411 | $211K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 1,133 | $582K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 570 | $293K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 348 | $179K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 201 | $104K | Form 4 |
| Mar 5, 2026 | CASPER MARC N Chairman & CEO · Director | Sale | 106 | $55K | Form 4 |
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
4,000
Price
$309.63
Value
$1.24M ⚡
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
20
Price
$503.66
Value
$10K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
60
Price
$505.76
Value
$30K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
58
Price
$507.54
Value
$29K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
99
Price
$509.66
Value
$50K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
214
Price
$511.78
Value
$110K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
411
Price
$512.73
Value
$211K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
1,133
Price
$513.71
Value
$582K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
570
Price
$514.71
Value
$293K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
348
Price
$515.64
Value
$179K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
201
Price
$516.73
Value
$104K
CASPER MARC N
Chairman & CEO · Director
Date
Mar 5
Shares
106
Price
$517.83
Value
$55K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About TMO insider trading
TMO insider trades
Thermo Fisher Scientific Inc. (TMO) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including CASPER MARC N (Chairman & CEO · Director), Shafer Michael D (EVP), Holmes Joseph R. (VP & Chief Accounting Officer). Over the past 12 months, 5 insiders have filed transactions with the SEC. TMO insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Thermo Fisher Scientific Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
TMO insider trading · 5 questionsThe insiders of Thermo Fisher Scientific Inc. (TMO) include executives and directors such as CASPER MARC N (Chairman & CEO · Director), Shafer Michael D (EVP), Holmes Joseph R. (VP & Chief Accounting Officer), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026