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  4. [Form 4] CHARLES RIVER LABORATORIES INTERNATIONAL, INC. Insider Trading Activity

Director James Foster gets 1,860 Charles River (NYSE: CRL) shares

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

FOSTER JAMES C reported acquisition or exercise transactions in this Form 4 filing.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC. director James C. Foster reported equity awards in the form of common stock tied to restricted stock units. On May 8, 2026, he received awards covering 422 shares and 1,438 shares of common stock at $177.62 per share.

These awards were granted in lieu of director service fees for the term commencing May 5, 2026. The unvested restricted stock units vest on the earlier of May 8, 2027 or the business day prior to the company’s next annual meeting of shareholders.

Following one of the reported awards, Foster is shown as directly holding 281,553 shares of common stock. Additional indirect holdings are reported through his spouse and various trusts, including GRAT structures, indicating a mix of direct and indirect ownership interests.

Positive

  • None.

Negative

  • None.
Insider FOSTER JAMES C
Role null
Type Security Shares Price Value
Grant/Award Common Stock 1,438 $177.62 $255K
Grant/Award Common Stock 422 $177.62 $75K
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 281,131 shares (Direct, null); Common Stock — 5,423 shares (Indirect, 2024 GRAT)
Footnotes (1)
  1. The unvested restricted stock units vest upon the earlier of 5/8/2027 or the business day prior to the Company's next annual meeting of shareholders. The grant was made in lieu of director service fees for the term commencing May 5, 2026. The restricted stock units vest upon the earlier of 5/8/2027, or the business day prior to the Company's next annual meeting of shareholders.
Stock award 1 422 shares at $177.62 Grant or award acquisition on May 8, 2026
Stock award 2 1,438 shares at $177.62 Grant or award acquisition on May 8, 2026
Direct holdings after award 281,553 shares Total shares following one reported award line
Spouse indirect holdings 10,000 shares Common stock held by spouse as of May 8, 2026
2025 GRAT holdings 10,780 shares Common stock held in 2025 GRAT as of May 8, 2026
restricted stock units financial
"The unvested restricted stock units vest upon the earlier of 5/8/2027"
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
annual meeting of shareholders financial
"or the business day prior to the Company's next annual meeting of shareholders"
A yearly gathering where a company’s owners (shareholders) vote on key items like electing the board, approving executive pay, and ratifying auditors, and receive updates on performance and strategy. Think of it as an annual town hall for owners: it matters to investors because outcomes and disclosures can affect leadership, corporate direction, dividend and governance policies, and therefore the company’s risk and potential return.
GRAT financial
"nature_of_ownership": "2025 GRAT""
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
FOSTER JAMES C
(Last)(First)(Middle)
C/O CHARLES RIVER LABORATORIES
251 BALLARDVALE STREET
(Street)
WILMINGTON MASSACHUSETTS 01887
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
CHARLES RIVER LABORATORIES INTERNATIONAL, INC. [ CRL ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/08/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock05/08/2026A1,438(1)A$177.62281,131D
Common Stock05/08/2026A422(2)A$177.62281,553D
Common Stock5,423I2024 GRAT
Common Stock10,780I2025 GRAT
Common Stock230Iby Trust
Common Stock750IBy Trust
Common Stock2,250IBy Trust
Common Stock10,000IHeld By Spouse
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The unvested restricted stock units vest upon the earlier of 5/8/2027 or the business day prior to the Company's next annual meeting of shareholders.
2. The grant was made in lieu of director service fees for the term commencing May 5, 2026. The restricted stock units vest upon the earlier of 5/8/2027, or the business day prior to the Company's next annual meeting of shareholders.
/s/ James C. Foster05/11/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did James C. Foster report at CHARLES RIVER (CRL)?

James C. Foster reported equity awards of common stock as director compensation. On May 8, 2026, he received two separate stock-based awards, both classified as grant or award acquisitions rather than open-market trades, reflecting routine director compensation in shares.

How many CHARLES RIVER (CRL) shares did James C. Foster receive in these awards?

He received two awards covering 422 shares and 1,438 shares of common stock. Both awards were recorded on May 8, 2026 at a reported price of $177.62 per share, increasing his equity-based compensation position in the company.

What are the vesting terms for James C. Foster’s restricted stock units in CRL?

The unvested restricted stock units vest on the earlier of May 8, 2027 or the business day before the company’s next annual meeting of shareholders. This schedule links vesting to either a fixed date or the timing of the annual shareholder meeting.

Why were these CHARLES RIVER (CRL) stock awards granted to James C. Foster?

The grant was made in lieu of director service fees for the term commencing May 5, 2026. Instead of cash fees, Foster received restricted stock unit-based awards that convert into common stock upon vesting under the disclosed terms.

Did James C. Foster buy or sell CHARLES RIVER (CRL) shares on the market?

The reported transactions are coded as grant or award acquisitions, not market purchases or sales. They represent stock-based compensation rather than open-market trading activity, according to the Form 4 transaction code description and associated footnotes.

What are James C. Foster’s reported direct and indirect CRL holdings after these awards?

One line shows Foster directly holding 281,553 shares of common stock after an award. Additional indirect holdings appear through his spouse, trusts, and 2024 and 2025 GRATs, each listing separate post-transaction share totals for those entities.