CRL SEC Filing News — Charles River Laboratories International, Inc.

Latest SEC filings for Charles River Laboratories International, Inc. (CRL) explained in plain English. Covers insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). StrongBuyAnalytics provides navigation and brief excerpts or summaries; original filings remain at the SEC/source links and were authored by their filers, not StrongBuyAnalytics. Filing dates shown are source dates. Coverage and detection can be delayed or incomplete because of SEC availability, amendments, parsing, caching, or outages. Latest source filing date shown: 2026-10-07.

Charles River Laboratories International, Inc. provides drug discovery, non-clinical development, and safety testing services in the United States, Europe, Canada, the Asia Pacific, and internationally. The Research Models and Services segment produces and sells rodents, and purpose-bred rats and mice for use by researchers. This segment also provides a range of services to assist its clients in supporting the use of research models in research and screening pre-clinical drug candidates, includi…
Sector: Healthcare Industry: Diagnostics & Research Market Cap: $14.5B CIK: 1100682
20
Total Filings
1
Bullish Classifications
11
Bearish Classifications
12
Insider Transactions
1
Material Events (8-K)
0
Periodic Reports
Rule-based classifications for CRL currently lean bearish. Of the 20 filing records displayed, 11 carry bearish classifications (such as insider sales or negative 8-K disclosures) versus 1 bullish. This does not necessarily signal fundamental deterioration — insiders sell for many reasons — but it is worth monitoring alongside the company's core financial metrics.
CRL Filing Activity Snapshot 2026-08-10 — 2026-10-07
Insider Transactions (Form 4)
1 buy vs 9 sells
Net insider selling in this period — insiders sell for many reasons beyond conviction.
Largest Form 144 Filing
$10.07M
FOSTER JAMES C (Director) · 2026-08-27
33,561 shares · Form 4
Form 144 Notices
7
Proposed insider sales filed — Form 144 is a notice of intent, not a confirmed transaction. Actual sales are confirmed via Form 4.
Insider Transactions 12 · Forms 3, 4 and 5

A Form 4 is filed within two business days of a company insider — an officer, a director, or a holder of more than ten percent of the stock — changing their position in the shares. All 12 filings in this group are Form 4s for Charles River Laboratories International, Inc.

The difficulty with reading these filings as a group is that a single form type covers transactions that mean entirely different things. An executive spending their own money to buy stock and an executive having shares withheld to pay tax on a vesting grant both appear as a Form 4. Every filing below is therefore tagged with the nature of the underlying transaction, taken from the transaction code reported on the form itself.

Across the 12 insider filings shown, the breakdown is 9 open-market sale, 2 gift and 1 open-market purchase. 10 of them involved a discretionary open-market trade; the rest are compensation and administrative mechanics.

What each transaction type means

Open-market sale ×9
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.
Gift ×2
Shares were transferred as a gift, typically for estate or charitable planning. No sale into the market took place.
Open-market purchase ×1
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.
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
Proposed Insider Sales 7 · Form 144

A Form 144 is a notice of intent to sell restricted or control securities. It is not a record that anything was sold. Charles River Laboratories International, Inc. has 7 such notices in this period.

The distinction matters because a Form 144 is frequently reported as though it were a completed insider sale. The filer may sell all of the shares covered, some of them, or none at all, and there is no obligation to update the notice either way. A sale that is actually executed by an officer or director shows up separately on a Form 4, which is the filing to check before treating a proposed sale as a real one.

Form 144 Proposed Insider Sale 2026-10-05

CRL Form 144 filed for proposed insider sale by Parisotto Shannon M (981 shares) ~$308.6K

Parisotto Shannon M filed a Form 144 with the SEC indicating intent to sell CRL (CHARLES RIVER LABORATORIES INTERNATIONAL, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Parisotto Shannon M Shares: 981 Est. Value: $308.6K
Form 144 Large Proposed Insider Sale 2026-08-25

CRL Form 144 filed for proposed insider sale by FOSTER JAMES C (33,561 shares) ~$10.07M

FOSTER JAMES C filed a Form 144 with the SEC indicating intent to sell CRL (CHARLES RIVER LABORATORIES INTERNATIONAL, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: FOSTER JAMES C Shares: 33,561 Est. Value: $10.07M
Form 144 Proposed Insider Sale 2026-08-19

CRL Form 144 filed for proposed insider sale by Parisotto Shannon M (2,039 shares) ~$599.7K

Parisotto Shannon M filed a Form 144 with the SEC indicating intent to sell CRL (CHARLES RIVER LABORATORIES INTERNATIONAL, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Parisotto Shannon M Shares: 2,039 Est. Value: $599.7K
Form 144 Proposed Insider Sale 2026-08-18

CRL Form 144 filed for proposed insider sale by Nancy C Andrews (573 shares) ~$163.3K

Nancy C Andrews filed a Form 144 with the SEC indicating intent to sell CRL (CHARLES RIVER LABORATORIES INTERNATIONAL, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Nancy C Andrews Shares: 573 Est. Value: $163.3K
Form 144 Proposed Insider Sale 2026-08-11

CRL Form 144 filed for proposed insider sale by Parisotto Shannon M (3,714 shares) ~$1.04M

Parisotto Shannon M filed a Form 144 with the SEC indicating intent to sell CRL (CHARLES RIVER LABORATORIES INTERNATIONAL, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Parisotto Shannon M Shares: 3,714 Est. Value: $1.04M
Form 144 Proposed Insider Sale 2026-08-11

CRL Form 144 filed for proposed insider sale by Girshick Birgit (6,500 shares) ~$1.82M

Girshick Birgit filed a Form 144 with the SEC indicating intent to sell CRL (CHARLES RIVER LABORATORIES INTERNATIONAL, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: Girshick Birgit Shares: 6,500 Est. Value: $1.82M
Form 144 Large Proposed Insider Sale 2026-08-10

CRL Form 144 filed for proposed insider sale by FOSTER JAMES C (28,733 shares) ~$7.90M

FOSTER JAMES C filed a Form 144 with the SEC indicating intent to sell CRL (CHARLES RIVER LABORATORIES INTERNATIONAL, INC.) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4. The proposed dollar value is large enough to merit attention.

Filing: Form 144 (Proposed Sale Notice) Insider: FOSTER JAMES C Shares: 28,733 Est. Value: $7.90M
Material Events 1 · Form 8-K

An 8-K reports a material event in the window between scheduled reports. There is 1 in this period for Charles River Laboratories International, Inc. Each 8-K names the item number it is filed under, and that number is the fastest way to tell a routine disclosure from a consequential one.

Item 2.02 is an earnings release, Item 5.02 is a change of directors or officers, and Item 1.01 or 2.01 covers a material agreement or a completed acquisition. Item 7.01 and Item 8.01 are the general-purpose disclosure items and carry no fixed meaning on their own.

Form 8-K Material Company Update 2026-09-24

CRL filed 8-K — material company event

CHARLES RIVER LABORATORIES INTERNATIONAL, INC. filed an 8-K with the SEC reporting a material event. Summary unavailable — view the original SEC filing for the full text.

Filing: 8-K (Material Event)

How we classify Charles River Laboratories International, Inc.'s filings

Straight from EDGAR

Each displayed record links to an original source document. StrongBuyAnalytics provides navigation and brief excerpts or summaries, not the filing itself. Parsing may omit context or contain errors, so read the original document in full.

Transaction codes, not guesswork

The nature shown on each insider filing comes from the transaction code the filer entered on the form itself — P for an open-market purchase, A for a compensation award, F for shares withheld to pay tax, M for an option exercise. Where one filing contains several codes, the transaction table lists them line by line.

Why the distinction matters

Insider activity is routinely summarised as buying or selling, which flattens together decisions that mean very different things. Shares withheld for tax on a vesting grant are an automatic administrative step; shares bought on the open market are someone committing their own money at the current price.

What this page does not tell you

A filing records what happened, not why. Form 4 does not always disclose whether a sale was executed under a pre-arranged Rule 10b5-1 plan, and no single filing is a basis for a decision on CRL. Read these alongside the fundamentals rather than in isolation.

Frequently Asked Questions — CRL SEC Filings

More Tools for CRL

Want deeper CRL analysis?

View valuation, growth metrics, the rule-based stock-page score, demand zones, peer comparison, and more — all on the CRL stock analysis page.

CRL Full Analysis
Publisher, sources & limitations — September 15, 2026. StrongBuyAnalytics provides navigation and brief excerpts or summaries for educational use. Original filings remain at SEC EDGAR or other displayed source links; StrongBuyAnalytics does not author them. Filing dates are source dates, not publication dates for this page. Coverage can be delayed, incomplete, amended, or unavailable because of SEC/source availability, parsing, caching, or outages. Verify every material statement in the original filing.
Data Sources · Methodology · AI Disclosure · Corrections Policy · Disclaimer