Michael Gunnar Knell

CIK: 0001543779

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)9 (32.1%)

Position reduction

Option Exercises (M)3 (10.7%)

Derivative conversions

Awards (A)5 (17.9%)

Compensation grants

Other (G, F, J, C, D, …)11 (39.3%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

CRL

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Officer

Discretionary Trading P&L

Holdings

Transaction History (28 total)

CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
1.3K shares at avg. $259.07$330K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
736 shares at avg. $258.53$190K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
1.2K shares at avg. $258.53$312K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
404 shares at avg. $258.53$104K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Exercise(M)
Direct
736 shares at avg. $208.44$153K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Exercise(M)
Direct
1.2K shares at avg. $194.12$234K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Exercise(M)
Direct
404 shares at avg. $179.66$73K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
482 shares at avg. $265.17$128K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
620 shares at avg. $263.94$164K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
213 shares at avg. $262.37$56K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
810 shares at avg. $261.45$212K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Aug 6, 2026
Sale(S)
Direct
901 shares at avg. $260.63$235K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 31, 2026
Tax Payment(F)
Direct
48 shares at avg. $180.71$9K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 30, 2026
Tax Payment(F)
Direct
152 shares at avg. $180.71$27K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 29, 2026
Award(A)
Direct
1.8K shares at avg. $180.71$332K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 27, 2026
Tax Payment(F)
Direct
37 shares at avg. $156.73$6K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 26, 2026
Tax Payment(F)
Direct
50 shares at avg. $160.30$8K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Jan 30, 2026
Tax Payment(F)
Direct
526 shares at avg. $211.68$111K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Jan 30, 2026
Award(A)
Direct
1.7K shares-
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Nov 6, 2025
Award(A)
Direct
2.9K shares at avg. $170.88$500K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Jun 1, 2025
Tax Payment(F)
Direct
225 shares at avg. $135.63$31K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 31, 2025
Tax Payment(F)
Direct
48 shares at avg. $135.63$7K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 30, 2025
Award(A)
Direct
2.1K shares at avg. $135.63$280K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 28, 2025
Tax Payment(F)
Direct
25 shares at avg. $138.65$3K
CRL
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
May 27, 2025
Tax Payment(F)
Direct
37 shares at avg. $136.73$5K

		Type	Shares	Price		Ownership
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	1,274	$259.07	$330,055	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	736	$258.53	$190,278	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	1,205	$258.53	$311,529	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	404	$258.53	$104,446	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Exercise(M)	736	$208.44	$153,412	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Exercise(M)	1,205	$194.12	$233,915	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Exercise(M)	404	$179.66	$72,583	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	482	$265.17	$127,812	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	620	$263.94	$163,643	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	213	$262.37	$55,885	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	810	$261.45	$211,775	Direct
Aug 6, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Sale(S)	901	$260.63	$234,828	Direct
May 31, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	48	$180.71	$8,674	Direct
May 30, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	152	$180.71	$27,468	Direct
May 29, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Award(A)	1,837	$180.71	$331,964	Direct
May 27, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	37	$156.73	$5,799	Direct
May 26, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	50	$160.30	$8,015	Direct
Jan 30, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	526	$211.68	$111,344	Direct
Jan 30, 2026	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Award(A)	1,668	-	$0	Direct
Nov 6, 2025	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Award(A)	2,926	$170.88	$499,995	Direct
Jun 1, 2025	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	225	$135.63	$30,517	Direct
May 31, 2025	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	48	$135.63	$6,510	Direct
May 30, 2025	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Award(A)	2,064	$135.63	$279,940	Direct
May 28, 2025	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	25	$138.65	$3,466	Direct
May 27, 2025	CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.	Tax Payment(F)	37	$136.73	$5,059	Direct

1-25 of 28 transactions

About Knell Michael Gunnar

Knell Michael Gunnar (SEC CIK 0001543779) files insider reports with the SEC as SVP, Finance and CAO of CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL).

Signal8 holds 8 ownership filings by Knell Michael Gunnar, all Form 4s, filed between Feb 3, 2025 and Aug 10, 2026. Those filings report 28 transactions, from Jan 31, 2025 to Aug 6, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Knell Michael Gunnar's filings is in WILMINGTON, MA.

Recent filings by Knell Michael Gunnar

Aug 6, 2026: Open-market sales of CRL shares (4 lines, Form 4, code S).
Aug 6, 2026: Option exercises of CRL shares (3 lines, Form 4, code M).
Aug 6, 2026: Open-market sales of CRL shares (5 lines, Form 4, code S).
May 31, 2026: Tax withholding of CRL shares (Form 4, code F).
May 30, 2026: Tax withholding of CRL shares (Form 4, code F).

Other insiders filing for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL)

FOSTER JAMES C, Director
Parisotto Shannon M, CEVP, Disc & Safety Assessment
Coleman Glenn, EVP & Chief Financial Officer
Girshick Birgit, Chief Executive Officer
Andrews Nancy C, Director
LaPlume Joseph W, EVP, Corp Strategy & Develop

How to read Form 4 transaction codes