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

Director at Charles River (NYSE: CRL) receives 1,973-share equity award

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

Rhea-AI Filing Summary

CHARLES RIVER LABORATORIES INTERNATIONAL, INC. director Reshema Kemps-Polanco reported receiving equity awards in the form of restricted stock units covering a total of 1,973 shares of Common Stock on May 8, 2026, valued at $177.62 per share.

The Form 4 shows one award for 535 shares and another for 1,438 shares, both characterized as grants or awards rather than open-market purchases. According to the footnotes, these unvested restricted stock units vest upon the earlier of May 8, 2027 or the business day prior to the company’s next annual meeting of shareholders.

One of the grants was made in lieu of director service fees for the term commencing May 5, 2026, meaning part of the director’s compensation is being paid in equity instead of cash. These are routine compensation-related acquisitions and not market trades.

Positive

  • None.

Negative

  • None.
Insider Kemps-Polanco Reshema
Role null
Type Security Shares Price Value
Grant/Award Common Stock 1,438 $177.62 $255K
Grant/Award Common Stock 535 $177.62 $95K
Holdings After Transaction: Common Stock — 4,028 shares (Direct, null)
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.
RSU grant 1 535 shares Restricted stock unit award on May 8, 2026 at $177.62 per share
RSU grant 2 1,438 shares Restricted stock unit award on May 8, 2026 at $177.62 per share
Total RSU shares granted 1,973 shares Combined director equity awards on May 8, 2026
Grant price per share $177.62 per share Reference price for both RSU awards on May 8, 2026
RSU vesting date May 8, 2027 Vests earlier of May 8, 2027 or day before next annual meeting
restricted stock units financial
"The unvested restricted stock units vest upon the earlier of 5/8/2027 or the business day prior..."
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.
director service fees financial
"The grant was made in lieu of director service fees for the term commencing May 5, 2026."
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.
Common Stock financial
"security_title": "Common Stock""
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
Grant, award, or other acquisition financial
"transaction_code_description": "Grant, award, or other acquisition""
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*
Kemps-Polanco Reshema
(Last)(First)(Middle)
C/O CHARLES RIVER LABORATORIES
251 BALLARDVALE ST
(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$177.624,028D
Common Stock05/08/2026A535(2)A$177.624,563D
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/ Reshema Kemps-Polanco05/11/2026
** 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