Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

THERMO FISHER SCIENTIFIC INC.

TMO · NYSE · CIK 0000097745 · Healthcare · Diagnostics & Research

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

142 Form 4 transaction lines observed in the same window
94 sales · 48 option, withholding, award, gift or other lines

Last qualifying purchase2024-12-09 · Chai Nelson · $2.1K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
CASPER MARC NChairman & CEO
○▼○▼○▼○▼○▼○▼○
Britt Lisa P.Sr. VP and Chief HR Officer
○▼○▼○
Pettiti GianlucaPresident & COO
▼○○▼
Shafer Michael DExecutive Vice President
○▼○
Holmes Joseph R.VP & Chief Accounting Officer
○▼○
Meyer JamesSr. Vice President & CFO
○○
● Purchase▼ Sale○ Other

Showing the six most active owners; 5 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2024-12-09 · Chai Nelson.

Recent Form 4 activity

0Purchases
160Sales
102Other Form 4 lines
63SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING94 sale line(s) · context only
OTHER48 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
5,408,135
Previous report
5,019,933
Avg daily volume
2,608,482
Days to cover
2.1

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2024-12-09Chai NelsonPurchase (P)Common Stock4USD 535.93USD 2,144SEC filing ↗
2024-11-07Chai NelsonPurchase (P)Common Stock16USD 555.89USD 8,894SEC filing ↗
2023-06-26Boxer Michael APurchase (P)Common Stock4USD 526.15USD 2,105SEC filing ↗

Form 4 evidence

262 transaction lines in the latest 365-day window; 1,732 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-31Pettiti GianlucaSale (S)Common Stock4,133USD 614.38USD 2,539,233SEC filing ↗
2026-08-31Pettiti GianlucaOption exercise / conversion (M)Common Stock3,733USD 309.63USD 1,155,849SEC filing ↗
2026-08-28Shropshire Thomas B Jr.Tax withholding (F)Common Stock49USD 622.18USD 30,499SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-31Pettiti GianlucaSale (S)Common Stock4,133USD 614.38USD 2,539,233SEC filing ↗
2026-08-31Pettiti GianlucaOption exercise / conversion (M)Common Stock3,733USD 309.63USD 1,155,849SEC filing ↗
2026-08-28Shropshire Thomas B Jr.Tax withholding (F)Common Stock49USD 622.18USD 30,499SEC filing ↗
2026-08-28Shafer Michael DTax withholding (F)Common Stock790USD 622.18USD 491,553SEC filing ↗
2026-08-28Pettiti GianlucaTax withholding (F)Common Stock1,035USD 622.18USD 643,763SEC filing ↗
2026-08-28Meyer JamesTax withholding (F)Common Stock270USD 622.18USD 168,157SEC filing ↗
2026-08-28Holmes Joseph R.Tax withholding (F)Common Stock50USD 622.18USD 31,053SEC filing ↗
2026-08-28CASPER MARC NTax withholding (F)Common Stock1,257USD 622.18USD 781,844SEC filing ↗
2026-08-28Britt Lisa P.Tax withholding (F)Common Stock394USD 622.18USD 244,871SEC filing ↗
2026-08-24CASPER MARC NSale (S)Common Stock275USD 627.05USD 172,439SEC filing ↗
2026-08-24CASPER MARC NOption exercise / conversion (M)Common Stock275USD 309.63USD 85,148SEC filing ↗
2026-08-22Meyer JamesTax withholding (F)Common Stock31USD 629.27USD 19,476SEC filing ↗
2026-08-21CASPER MARC NSale (S)Common Stock10,000USD 626.92USD 6,269,153SEC filing ↗
2026-08-21CASPER MARC NOption exercise / conversion (M)Common Stock10,000USD 309.63USD 3,096,300SEC filing ↗
2026-08-20CASPER MARC NSale (S)Common Stock10,000USD 629.27USD 6,292,670SEC filing ↗
2026-08-20CASPER MARC NOption exercise / conversion (M)Common Stock10,000USD 309.63USD 3,096,300SEC filing ↗
2026-08-19Britt Lisa P.Sale (S)Common Stock11,440USD 613.12USD 7,014,093SEC filing ↗
2026-08-19Britt Lisa P.Option exercise / conversion (M)Common Stock11,440USD 418.32USD 4,785,581SEC filing ↗
2026-08-11Shafer Michael DSale (S)Common Stock25,500USD 600.00USD 15,300,000SEC filing ↗
2026-08-11Shafer Michael DOption exercise / conversion (M)Common Stock25,500USD 370.58USD 9,449,832SEC filing ↗
2026-08-07Holmes Joseph R.Sale (S)Common Stock420USD 584.81USD 245,620SEC filing ↗
2026-08-07Holmes Joseph R.Option exercise / conversion (M)Common Stock420USD 309.63USD 130,045SEC filing ↗
2026-08-07CASPER MARC NSale (S)Common Stock4,883USD 586.12USD 2,862,002SEC filing ↗
2026-08-07CASPER MARC NOption exercise / conversion (M)Common Stock275USD 309.63USD 85,148SEC filing ↗
2026-08-06CASPER MARC NSale (S)Common Stock15,000USD 574.46USD 8,616,967SEC filing ↗
2026-08-06CASPER MARC NOption exercise / conversion (M)Common Stock10,000USD 309.63USD 3,096,300SEC filing ↗
2026-08-06Britt Lisa P.Sale (S)Common Stock5,850USD 580.00USD 3,393,000SEC filing ↗
2026-08-06Britt Lisa P.Option exercise / conversion (M)Common Stock5,850USD 309.63USD 1,811,336SEC filing ↗
2026-08-05CASPER MARC NSale (S)Common Stock15,000USD 575.23USD 8,628,434SEC filing ↗
2026-08-05CASPER MARC NOption exercise / conversion (M)Common Stock10,000USD 309.63USD 3,096,300SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerTMO
CIK0000097745
SectorHealthcare
IndustryDiagnostics & Research Yahoo Finance
SEC SIC3829 Measuring & Controlling Devices, NEC
ExchangeNYSE

Data coverage

Local Form 4 history1,732 transaction lines from 2020-02-03 to 2026-08-31
3 P purchase lines · 1,011 S sale lines · 718 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.