Summary
Updated Aug 31, 2026
Birgit Girshick is Chief Executive Officer, Director of CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL). 9 SEC Form 4 filings on record going back to 2025, most recently on 20 August 2026. Most recent open-market trade: sold $1.82M of CRL on 13 August 2026. Lifetime open-market sales: $1.82M.
Recent Transactions
18Every recent SEC Form 4 transaction Birgit Girshick has reported, most recent first.
$CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.S - Open-market sale10b5-16.5K shares @ $279.90$1.82M
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.M - Option exercise10b5-1
6.5K shares @ $179.66$1.17M
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
378 shares @ $180.71$68K
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
1.2K shares @ $180.71$218K
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
242 shares @ $156.73$38K
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
376 shares @ $160.30$60K
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
3.1K shares @ $211.68$648K
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
283 shares @ $135.63$38K
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
117 shares @ $138.65$16K
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
242 shares @ $136.73$33K
- $CRL CHARLES RIVER LABORATORIES INTERNATIONAL, INC.F - Tax withholding / forfeiture
281 shares @ $136.73$38K
Trading Pattern
InsiderAlpha's records for Birgit Girshick go back to 2025: 9 primary Form 4 filings, an average of 4.5 per year. 3 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Birgit Girshick files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- James C. Foster - $34.84M of CRL open-market activity in the last 12 months
- Shannon M. Parisotto - $2.97M of CRL open-market activity in the last 12 months
- Michael Gunnar Knell - $1.73M of CRL open-market activity in the last 12 months
- Victoria L. Creamer - $1.08M of CRL open-market activity in the last 12 months
- Nancy C. Andrews - $163K of CRL open-market activity in the last 12 months
- Joseph W. Laplume - $70K of CRL open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Birgit Girshick?
Birgit Girshick is a corporate insider, tracked as Chief Executive Officer, Director of CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL). InsiderAlpha holds 9 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Birgit Girshick submitted recently?
4 primary Form 4 filings in the last 90 days, covering 1 company.
Has Birgit Girshick been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($1.82M) across all tracked filings.
Where can I see all of Birgit Girshick's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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