Form 4
Open-market sale
Insider Selling
2026-10-07
CRL insider Parisotto Shannon M (CEVP, Disc & Safety Assessment) sold 981 shares (~$302.6K)
Parisotto Shannon M, listed as CEVP, Disc & Safety Assessment at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 981 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
981 |
$208.44 |
$204.5K |
S |
Open-market sale
|
981 |
$308.44 |
$302.6K |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
981 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Parisotto Shannon M (CEVP, Disc & Safety Assessment)
Shares: 981
Est. Value: $302.6K
Form 4
Open-market purchase
Insider Buying
2026-10-02
CRL insider Coleman Glenn (EVP & Chief Financial Officer) bought 10 shares (~$3.0K)
Coleman Glenn, listed as EVP & Chief Financial Officer at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market purchase of 10 CRL shares in a Form 4 filing. Insider buying is often treated as a bullish signal because company insiders are committing their own capital.
The insider bought shares on the open market with their own money. This is the only Form 4 category that requires a discretionary cash outlay at the prevailing price.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
P |
Open-market purchase
|
10 |
$297.43 |
$3.0K |
Filing: Form 4 (Insider Transaction)
Insider: Coleman Glenn (EVP & Chief Financial Officer)
Shares: 10
Est. Value: $3.0K
Form 4
Open-market sale
Insider Selling
2026-08-27
CRL insider FOSTER JAMES C (Director) sold 33,561 shares (~$10.07M)
FOSTER JAMES C, listed as Director at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 33,561 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
21,132 |
$194.12 |
$4.10M |
M |
Option exercise
|
12,429 |
$208.44 |
$2.59M |
S |
Open-market sale
|
33,561 |
$300.00 |
$10.07M |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
21,132 |
— |
— |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
12,429 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: FOSTER JAMES C (Director)
Shares: 33,561
Est. Value: $10.07M
Form 4
Gift
Tax / Compensation Filing
2026-08-20
CRL insider Form 4 filed for equity award, exercise, or tax withholding
Girshick Birgit (Director, Chief Executive Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
G |
Gift
|
528 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Girshick Birgit (Director, Chief Executive Officer)
Shares: 528
Form 4
Open-market sale
Insider Selling
2026-08-20
CRL insider Parisotto Shannon M (CEVP, Disc & Safety Assessment) sold 2,039 shares (~$599.7K)
Parisotto Shannon M, listed as CEVP, Disc & Safety Assessment at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 2,039 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
2,039 |
$194.12 |
$395.8K |
S |
Open-market sale
|
2,039 |
$294.12 |
$599.7K |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
2,039 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Parisotto Shannon M (CEVP, Disc & Safety Assessment)
Shares: 2,039
Est. Value: $599.7K
Form 4
Open-market sale
Insider Selling
2026-08-20
CRL insider Andrews Nancy C (Director) sold 573 shares (~$163.4K)
Andrews Nancy C, listed as Director at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 573 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
573 |
$164.30 |
$94.1K |
S |
Open-market sale
|
573 |
$285.24 |
$163.4K |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
573 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Andrews Nancy C (Director)
Shares: 573
Est. Value: $163.4K
Form 4
Open-market sale
Insider Selling
2026-08-13
CRL insider Girshick Birgit (Director, Chief Executive Officer) sold 6,500 shares (~$1.82M)
Girshick Birgit, listed as Director, Chief Executive Officer at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 6,500 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
6,500 |
$179.66 |
$1.17M |
S |
Open-market sale
|
6,500 |
$279.90 |
$1.82M |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
6,500 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Girshick Birgit (Director, Chief Executive Officer)
Shares: 6,500
Est. Value: $1.82M
Form 4
Open-market sale
Insider Selling
2026-08-13
CRL insider Parisotto Shannon M (CEVP, Disc & Safety Assessment) sold 3,714 shares (~$1.04M)
Parisotto Shannon M, listed as CEVP, Disc & Safety Assessment at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 3,714 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
3,714 |
$179.66 |
$667.3K |
S |
Open-market sale
|
3,714 |
$279.66 |
$1.04M |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
3,714 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Parisotto Shannon M (CEVP, Disc & Safety Assessment)
Shares: 3,714
Est. Value: $1.04M
Form 4
Gift
Tax / Compensation Filing
2026-08-11
CRL insider Form 4 filed for equity award, exercise, or tax withholding
LaPlume Joseph W (EVP, Corp Strategy & Develop) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.
Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
G |
Gift
|
257 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: LaPlume Joseph W (EVP, Corp Strategy & Develop)
Shares: 257
Form 4
Open-market sale
Insider Selling
2026-08-11
CRL insider FOSTER JAMES C (Director) sold 28,733 shares (~$7.90M)
FOSTER JAMES C, listed as Director at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 28,733 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
28,733 |
$179.66 |
$5.16M |
S |
Open-market sale
|
28,733 |
$275.00 |
$7.90M |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
28,733 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: FOSTER JAMES C (Director)
Shares: 28,733
Est. Value: $7.90M
Form 4
Open-market sale
Insider Selling
2026-08-10
CRL insider Knell Michael Gunnar (SVP, Finance and CAO) sold 6,645 shares (~$1.73M)
Knell Michael Gunnar, listed as SVP, Finance and CAO at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 6,645 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
S |
Open-market sale
|
1,274 |
$259.07 |
$330.1K |
S |
Open-market sale
|
901 |
$260.63 |
$234.8K |
S |
Open-market sale
|
810 |
$261.45 |
$211.8K |
S |
Open-market sale
|
213 |
$262.37 |
$55.9K |
S |
Open-market sale
|
620 |
$263.94 |
$163.6K |
S |
Open-market sale
|
482 |
$265.17 |
$127.8K |
M |
Option exercise
|
404 |
$179.66 |
$72.6K |
M |
Option exercise
|
1,205 |
$194.12 |
$233.9K |
M |
Option exercise
|
736 |
$208.44 |
$153.4K |
S |
Open-market sale
|
404 |
$258.53 |
$104.4K |
S |
Open-market sale
|
1,205 |
$258.53 |
$311.5K |
S |
Open-market sale
|
736 |
$258.53 |
$190.3K |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
404 |
— |
— |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
1,205 |
— |
— |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
736 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Knell Michael Gunnar (SVP, Finance and CAO)
Shares: 6,645
Est. Value: $1.73M
Form 4
Open-market sale
Insider Selling
2026-08-10
CRL insider Creamer Victoria L (EVP & Chief People Officer) sold 4,179 shares (~$1.08M)
Creamer Victoria L, listed as EVP & Chief People Officer at CHARLES RIVER LABORATORIES INTERNATIONAL, INC., reported an open-market sale of 4,179 CRL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.
The insider sold shares on the open market. Sales may be discretionary or executed automatically under a pre-arranged Rule 10b5-1 trading plan, and a Form 4 does not always make clear which applies.
Transactions reported on this filing
| Code |
Nature |
Shares |
Price |
Value |
M |
Option exercise
|
4,179 |
$179.66 |
$750.8K |
S |
Open-market sale
|
4,179 |
$259.16 |
$1.08M |
M |
Option exercise
derivative · Stock Options (Right to Buy)
|
4,179 |
— |
— |
Filing: Form 4 (Insider Transaction)
Insider: Creamer Victoria L (EVP & Chief People Officer)
Shares: 4,179
Est. Value: $1.08M