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

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CRL · NYSE · CIK 0001100682 · Healthcare · Diagnostics & Research

INSIDER SIGNAL

No active buy signal

1 qualifying P purchase group
in the current 180-day scoring window

89 Form 4 transaction lines observed in the same window
19 sales · 69 option, withholding, award, gift or other lines

Last qualifying purchase2026-09-30 · Coleman Glenn · $3.0K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent
Recent buying1 qualifying line group(s)
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
Parisotto Shannon MCEVP, Disc & Safety Assessment
○○○○○▼○▼○▼○▼
FOSTER JAMES CDirector
○○▼○▼○▼
Girshick BirgitChief Executive Officer
○○○○○▼○
Knell Michael GunnarSVP, Finance and CAO
○○○○▼
Creamer Victoria LEVP & Chief People Officer
○○○○▼
LaPlume Joseph WEVP, Corp Strategy & Develop
○○○○
● Purchase▼ Sale○ Other

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

Purchase breadth & concentration

QUALIFYING BUYERS1
PURCHASE CONCENTRATION100%Largest buyer: Coleman Glenn · $3.0K
CLUSTER BUYING · 15D1 insiderPeak activity: 2026-09-30–2026-09-30

Roles in the peak window: EVP & Chief Financial Officer. Concentration uses priced qualifying P lines only and does not change the saved score.

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: 2026-09-30 · Coleman Glenn.

Recent Form 4 activity

2Purchases
19Sales
86Other Form 4 lines
56SEC filings · 365 days
BUYING1 qualifying P line(s) · 180 days
SELLING19 sale line(s) · context only
OTHER69 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
2,878,537
Previous report
2,230,517
Avg daily volume
1,071,070
Days to cover
2.7

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
2026-09-30Coleman GlennPurchase (P)Common Stock10USD 297.43USD 2,974SEC filing ↗
2026-03-03LaPlume Joseph WPurchase (P)Common Stock25USD 174.54USD 4,364SEC filing ↗
2025-02-20Girshick BirgitPurchase (P)Common Stock1,514USD 164.63USD 249,250SEC filing ↗
2025-02-20FOSTER JAMES CPurchase (P)Common Stock6,075USD 165.01USD 1,002,436SEC filing ↗
2023-11-20Girshick BirgitPurchase (P)Common Stock1,322USD 187.82USD 248,298SEC filing ↗
2023-11-14FOSTER JAMES CPurchase (P)Common Stock5,620USD 178.05USD 1,000,641SEC filing ↗
2023-08-24WALLMAN RICHARD FPurchase (P)Common Stock1,000USD 198.79USD 198,790SEC filing ↗
2023-02-23WALLMAN RICHARD FPurchase (P)Common Stock1,750USD 220.73USD 386,278SEC filing ↗
2022-12-02WALLMAN RICHARD FPurchase (P)Common Stock1,500USD 218.90USD 328,350SEC filing ↗
2020-11-02WALLMAN RICHARD FPurchase (P)Common Stock7,200USD 233.20USD 1,679,006SEC filing ↗

Form 4 evidence

107 transaction lines in the latest 365-day window; 994 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-05Parisotto Shannon MSale (S)Common Stock981USD 308.44USD 302,580SEC filing ↗
2026-10-05Parisotto Shannon MOption exercise / conversion (M)Common Stock981USD 208.44USD 204,480SEC filing ↗
2026-09-30Coleman GlennPurchase (P)Common Stock10USD 297.43USD 2,974SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-05Parisotto Shannon MSale (S)Common Stock981USD 308.44USD 302,580SEC filing ↗
2026-10-05Parisotto Shannon MOption exercise / conversion (M)Common Stock981USD 208.44USD 204,480SEC filing ↗
2026-09-30Coleman GlennPurchase (P)Common Stock10USD 297.43USD 2,974SEC filing ↗
2026-08-25FOSTER JAMES CSale (S)Common Stock33,561USD 300.00USD 10,068,300SEC filing ↗
2026-08-25FOSTER JAMES COption exercise / conversion (M)Common Stock33,561USD 199.42USD 6,692,845SEC filing ↗
2026-08-19Parisotto Shannon MSale (S)Common Stock2,039USD 294.12USD 599,711SEC filing ↗
2026-08-19Parisotto Shannon MOption exercise / conversion (M)Common Stock2,039USD 194.12USD 395,811SEC filing ↗
2026-08-19Girshick BirgitGift (G)Common Stock528USD 0.00USD 0SEC filing ↗
2026-08-18Andrews Nancy CSale (S)Common Stock573USD 285.24USD 163,443SEC filing ↗
2026-08-18Andrews Nancy COption exercise / conversion (M)Common Stock573USD 164.30USD 94,144SEC filing ↗
2026-08-11Parisotto Shannon MSale (S)Common Stock3,714USD 279.66USD 1,038,657SEC filing ↗
2026-08-11Parisotto Shannon MOption exercise / conversion (M)Common Stock3,714USD 179.66USD 667,257SEC filing ↗
2026-08-11Girshick BirgitSale (S)Common Stock6,500USD 279.90USD 1,819,350SEC filing ↗
2026-08-11Girshick BirgitOption exercise / conversion (M)Common Stock6,500USD 179.66USD 1,167,790SEC filing ↗
2026-08-10LaPlume Joseph WGift (G)Common Stock257USD 0.00USD 0SEC filing ↗
2026-08-10FOSTER JAMES CSale (S)Common Stock28,733USD 275.00USD 7,901,575SEC filing ↗
2026-08-10FOSTER JAMES COption exercise / conversion (M)Common Stock28,733USD 179.66USD 5,162,171SEC filing ↗
2026-08-06Knell Michael GunnarSale (S)Common Stock6,645USD 260.38USD 1,730,250SEC filing ↗
2026-08-06Knell Michael GunnarOption exercise / conversion (M)Common Stock2,345USD 196.12USD 459,909SEC filing ↗
2026-08-06Creamer Victoria LSale (S)Common Stock4,179USD 259.16USD 1,083,030SEC filing ↗
2026-08-06Creamer Victoria LOption exercise / conversion (M)Common Stock4,179USD 179.66USD 750,799SEC filing ↗
2026-08-05Parisotto Shannon MSale (S)Common Stock5,046USD 263.00USD 1,327,098SEC filing ↗
2026-06-29FOSTER JAMES CSale (S)Common Stock75,000USD 225.00USD 16,875,000SEC filing ↗
2026-06-05Parisotto Shannon MGift (G)Common Stock1,529USD 0.00USD 0SEC filing ↗
2026-06-05Girshick BirgitGift (G)Common Stock3,386USD 0.00USD 0SEC filing ↗
2026-06-05FOSTER JAMES CGift (G)Common Stock183,361USD 0.00USD 0SEC filing ↗
2026-06-02Barg StevenAward / grant (A)Common Stock422USD 174.79USD 73,761SEC filing ↗
2026-05-31Parisotto Shannon MTax withholding (F)Common Stock170USD 180.71USD 30,721SEC filing ↗
2026-05-31Mintz MarkTax withholding (F)Common Stock64USD 180.71USD 11,565SEC filing ↗
2026-05-31LaPlume Joseph WTax withholding (F)Common Stock235USD 180.71USD 42,467SEC 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 · —
TickerCRL
CIK0001100682
SectorHealthcare
IndustryDiagnostics & Research Yahoo Finance
SEC SIC8731 Services-Commercial Physical & Biological Research
ExchangeNYSE

Data coverage

Local Form 4 history994 transaction lines from 2020-01-06 to 2026-10-05
11 P purchase lines · 356 S sale lines · 627 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.