Thermo Fisher Scientific Inc. (TMO) Insider Trading

Over the last 3 months, TMO insiders made 0 open-market buys and 15 sales, a net sale of -$3.0M (SEC Form 4). Over the last 6 months, 2021 institutions increased and 2182 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
15
Net (3m)
-$3.0M
Insider trades by month Buys Sells
Oct
Nov
Dec
Feb
Mar
Apr
Context3-month price -7.6%Institutions mixed (13F)
DateInsiderTypeSharesPrice
May 22, 2026Jacks TylerdirectorGrant499
May 22, 2026JOHNSON JENNIFER MdirectorGrant499
May 22, 2026Keith R. AlexandradirectorGrant499
May 22, 2026HARRIS C MARTINdirectorGrant499
May 22, 2026Lynch Karen SdirectorGrant499
May 22, 2026Spar Debora LdirectorGrant499
May 22, 2026WEISLER DION JdirectorGrant499
May 22, 2026Chai NelsondirectorGrant499
May 22, 2026WEISLER DION JdirectorTax80$451.79
May 22, 2026SPERLING SCOTT MdirectorGrant499
May 22, 2026CHANDY RUBY RdirectorGrant499
Apr 29, 2026Pettiti Gianlucaofficer: President & COOSell400$462.66
Mar 31, 2026Lynch Karen SdirectorGrant66
Mar 31, 2026JOHNSON JENNIFER MdirectorGrant66
Mar 31, 2026WEISLER DION JdirectorGrant79
Mar 31, 2026Keith R. AlexandradirectorGrant66
Mar 31, 2026SPERLING SCOTT MdirectorGrant90
Mar 12, 2026Shafer Michael Dofficer: Executive Vice PresidentSell1,607$499.40
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell99$509.66
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell264$519.74
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell58$507.54
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell20$503.66
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell411$512.73
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell201$516.73
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell570$514.71
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell214$511.78
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell516$519.13
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell348$515.64
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell106$517.83
Mar 9, 2026CASPER MARC Ndirector, officer: Chairman & CEOSell1,133$513.71

Source: TMO SEC Form 4 filings, latest May 22, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their TMO positions over the last 6 months (SEC Form 13F).

Increased
2021
New positions
483
Reduced
2182
Sold out
345
Largest moves
InstitutionActionSharesFiled
VANGUARD GROUP INCIncreased34.1MJan 29, 2026
J. STERN & CO. LLPIncreased31.5MFeb 24, 2026
BLACKROCK, INC.Increased30.7MFeb 12, 2026
BLACKROCK, INC.Reduced30.4MMay 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position24.3MMay 15, 2026
STATE STREET CORPIncreased16.7MMay 15, 2026
STATE STREET CORPIncreased16.6MFeb 13, 2026
MORGAN STANLEYReduced11.9MFeb 13, 2026
CAPITAL WORLD INVESTORSIncreased11.0MFeb 11, 2026
MORGAN STANLEYReduced10.9MMay 15, 2026
FMR LLCIncreased10.8MMay 15, 2026
FMR LLCIncreased9.8MFeb 17, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased8.4MMay 15, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased8.2MFeb 9, 2026
PRICE T ROWE ASSOCIATES INC /MD/Increased7.7MFeb 17, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.