Skip to content
sellWeak cluster of 510b5-1 plan

Marc N Casper sold $8.6M of TMO

Chairman & CEO at THERMO FISHER SCIENTIFIC INC.. 15,000 shares at an average of $575.23, traded Aug 5, 2026, filed Aug 7, 2026.

Warning score
35
Value
$8.6M
15,000 shares
Holdings after
9,608
-11% from before
From 52-week low
+32%
low $437.57, close $577.39
From 52-week high
-9%
high $637.69, as of Aug 5, 2026

Score components

  • Role
    CEO
    +25
  • Trade size
    $8.6M at market
    +25
  • Share of holdings sold
    Sold 11% of holdings
    +5
  • Cluster
    5 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

TMOOct 9, 2026 · close 658.02
Since filing Aug 7, 2026: +10.9%SPY +0.9% · excess +10.0%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001216055-26-000006, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 5, 2026MOption exercise
Common Stock10b5-1
+10,000$309.63$3.1M133,925Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-157$566.25$89k133,768Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-130$567.92$74k133,638Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-105$569.24$60k133,533Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-53$569.76$30k133,480Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-135$571.49$77k133,345Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-431$573.08$247k132,914Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-1,186$574.03$681k131,728Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-2,223$574.98$1.3M129,505Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-2,930$576.05$1.7M126,575Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-2,575$576.82$1.5M124,000Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stock10b5-1
-75$577.56$43k123,925Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-79$566.26$45k14,529Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-66$567.94$37k14,463Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-38$569.13$22k14,425Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-40$569.69$23k14,385Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-68$571.50$39k14,317Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-216$573.08$124k14,101Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-590$574.03$339k13,511Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-1,113$574.98$640k12,398Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-1,464$576.05$843k10,934Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-1,289$576.83$744k9,645Aug 7, 2026
Aug 5, 2026SOpen-market sale
Common Stockindirect: By Floral Park Associates, Inc.10b5-1
-37$577.56$21k9,608Aug 7, 2026
Aug 5, 2026MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-10,000$0.00$030,550Aug 7, 2026

Related signals

Other insiders at THERMO FISHER SCIENTIFIC INC. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
30Weak
TMOsell 310b5-1
THERMO FISHER SCIENTIFIC INC.
Gianluca Pettiti
President & COO
$2.5M
4,133 shares
-18%
16Weak
TMOsell 410b5-1
THERMO FISHER SCIENTIFIC INC.
Marc N Casper
Chairman & CEO
$172k
275 shares
-0%
35Weak
TMOsell 510b5-1
THERMO FISHER SCIENTIFIC INC.
Marc N Casper
Chairman & CEO
$13M
20,000 shares
-15%
50Moderate
TMOsell 5
THERMO FISHER SCIENTIFIC INC.
Lisa P. Britt
Sr. VP and Chief HR Officer
$7.0M
11,440 shares
-44%
40Moderate
TMOsell 410b5-1
THERMO FISHER SCIENTIFIC INC.
Michael D Shafer
Executive Vice President
$15M
25,500 shares
-79%
30Weak
TMOsell 510b5-1
THERMO FISHER SCIENTIFIC INC.
Marc N Casper
Chairman & CEO
$2.9M
4,883 shares
-4%
33Weak
TMOsell 5
THERMO FISHER SCIENTIFIC INC.
Joseph R. Holmes
VP & Chief Accounting Officer
$246k
420 shares
-12%
50Moderate
TMOsell 5
THERMO FISHER SCIENTIFIC INC.
Lisa P. Britt
Sr. VP and Chief HR Officer
$3.4M
5,850 shares
-28%
35Weak
TMOsell 510b5-1
THERMO FISHER SCIENTIFIC INC.
Marc N Casper
Chairman & CEO
$8.6M
15,000 shares
-11%
28Weak
TMOsell 410b5-1
THERMO FISHER SCIENTIFIC INC.
Gianluca Pettiti
President & COO
$226k
400 shares
-2%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Marc N Casper sold $8.6M of TMO | InsiderTell