Birgit Girshick

CIK 1732091 · View on SEC EDGAR ↗

Insider

First SEC filing: Feb. 21, 2018 · Latest: June 8, 2026

On this page

Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.
Compensation Executive pay disclosed in company proxy statements.

Insider at

CRL selling Aug. 11, 2026

Insider transactions

0 buys (P) 1 sells (S) Net: $-1,819,350 + 77 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

77 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 11, 2026	CRL	M	6,500	$179.66	$1,167,790	42,513 Direct	+18.05%	Acquired	61.4% (price as of 2026-08-19)
Aug. 11, 2026	CRL	S 10b5-1	6,500	$279.90	$1,819,350	36,013 Direct	-15.29%	Disposed	3.6% (price as of 2026-08-19)
Aug. 11, 2026	CRL	M	6,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
June 5, 2026	CRL	G	3,386	—	—	43,803 Indirect	+8.38%	Acquired	(price as of 2026-08-19)
June 5, 2026	CRL	G	3,386	—	—	36,013 Direct	-8.59%	Disposed	(price as of 2026-08-19)
May 31, 2026	CRL	F	378	$180.71	$68,308	39,399 Direct	-0.95%	Disposed	60.5% (price as of 2026-08-19)
May 30, 2026	CRL	F	1,204	$180.71	$217,575	39,777 Direct	-2.94%	Disposed	60.5% (price as of 2026-08-19)
May 29, 2026	CRL	A	9,961	$180.71	$1,800,052	40,981 Direct	+32.11%	Acquired	60.5% (price as of 2026-08-19)
May 27, 2026	CRL	F	242	$156.73	$37,929	31,020 Direct	-0.77%	Disposed	85.0% (price as of 2026-08-19)
May 26, 2026	CRL	F	376	$160.30	$60,273	31,262 Direct	-1.19%	Disposed	80.9% (price as of 2026-08-19)
March 4, 2026	CRL	G	328	—	—	40,417 Indirect	-0.81%	Disposed	(price as of 2026-08-19)
Jan. 30, 2026	CRL	F	3,061	$211.68	$647,952	26,913 Direct	-10.21%	Disposed	37.0% (price as of 2026-08-19)
Jan. 30, 2026	CRL	A	9,500	—	—	29,974 Direct	+46.40%	Acquired	(price as of 2026-08-19)
May 31, 2025	CRL	F	283	$135.63	$38,383	65,944 Direct	-0.43%	Disposed	113.8% (price as of 2026-08-19)
May 30, 2025	CRL	A	12,239	$135.63	$1,659,976	66,227 Direct	+22.67%	Acquired	113.8% (price as of 2026-08-19)
May 28, 2025	CRL	F	117	$138.65	$16,222	53,988 Direct	-0.22%	Disposed	109.2% (price as of 2026-08-19)
May 27, 2025	CRL	F	242	$136.73	$33,089	54,105 Direct	-0.45%	Disposed	112.1% (price as of 2026-08-19)
May 26, 2025	CRL	F	281	$136.73	$38,421	54,347 Direct	-0.51%	Disposed	112.1% (price as of 2026-08-19)
Feb. 25, 2025	CRL	G	430	—	—	54,628 Direct	-0.78%	Disposed	(price as of 2026-08-19)
Feb. 20, 2025	CRL	P	1,514	$164.63	$249,250	55,058 Direct	+2.83%	Acquired	76.2% (price as of 2026-08-19)
Jan. 31, 2025	CRL	F	1,025	$165.57	$169,709	53,544 Direct	-1.88%	Disposed	75.2% (price as of 2026-08-19)
Jan. 31, 2025	CRL	A	4,057	—	—	54,569 Direct	+8.03%	Acquired	(price as of 2026-08-19)
May 31, 2024	CRL	A	8,722	$208.44	$1,818,014	8,722 Direct	—	Acquired	39.1% (price as of 2026-08-19)
May 31, 2024	CRL	A	3,838	—	—	50,512 Direct	+8.22%	Acquired	(price as of 2026-08-19)
May 29, 2024	CRL	F	216	$214.51	$46,334	46,674 Direct	-0.46%	Disposed	35.2% (price as of 2026-08-19)
May 28, 2024	CRL	F	132	$217.21	$28,672	46,890 Direct	-0.28%	Disposed	33.5% (price as of 2026-08-19)
May 27, 2024	CRL	F	242	$217.21	$52,565	47,022 Direct	-0.51%	Disposed	33.5% (price as of 2026-08-19)
May 26, 2024	CRL	F	376	$217.21	$81,671	47,264 Direct	-0.79%	Disposed	33.5% (price as of 2026-08-19)
Feb. 15, 2024	CRL	G	424	—	—	47,691 Direct	-0.88%	Disposed	(price as of 2026-08-19)
Jan. 29, 2024	CRL	F	1,135	$220.28	$250,018	48,064 Direct	-2.31%	Disposed	31.7% (price as of 2026-08-19)
Jan. 29, 2024	CRL	A	3,451	—	—	49,199 Direct	+7.54%	Acquired	(price as of 2026-08-19)
Jan. 29, 2024	CRL	F	1,159	$220.28	$255,305	48,115 Direct	-2.35%	Disposed	31.7% (price as of 2026-08-19)
Jan. 29, 2024	CRL	A	3,526	—	—	49,274 Direct	+7.71%	Acquired	(price as of 2026-08-19)
Jan. 10, 2024	CRL	M	5,916	$144.67	$855,868	50,365 Direct	+13.31%	Acquired	100.5% (price as of 2026-08-19)
Jan. 10, 2024	CRL	F	4,617	$213.14	$984,067	45,748 Direct	-9.17%	Disposed	36.1% (price as of 2026-08-19)
Jan. 10, 2024	CRL	M	5,916	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Jan. 10, 2024	CRL	F	4,590	$215.19	$987,722	45,775 Direct	-9.11%	Disposed	34.8% (price as of 2026-08-19)
Jan. 10, 2024	CRL	M	5,916	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Jan. 10, 2024	CRL	M	5,916	$215.19	$1,273,064	50,365 Direct	+13.31%	Acquired	34.8% (price as of 2026-08-19)
Nov. 20, 2023	CRL	P	1,322	$187.82	$248,298	44,449 Direct	+3.07%	Acquired	54.4% (price as of 2026-08-19)
May 29, 2023	CRL	F	216	$194.12	$41,930	43,477 Direct	-0.49%	Disposed	49.4% (price as of 2026-08-19)
May 28, 2023	CRL	F	132	$194.12	$25,624	43,693 Direct	-0.30%	Disposed	49.4% (price as of 2026-08-19)
May 27, 2023	CRL	F	242	$194.12	$46,977	43,825 Direct	-0.55%	Disposed	49.4% (price as of 2026-08-19)
May 26, 2023	CRL	A	9,145	$194.12	$1,775,227	9,145 Direct	—	Acquired	49.4% (price as of 2026-08-19)
May 26, 2023	CRL	A	3,812	—	—	44,067 Direct	+9.47%	Acquired	(price as of 2026-08-19)
March 7, 2023	CRL	G	475	—	—	40,255 Direct	-1.17%	Disposed	(price as of 2026-08-19)
Feb. 22, 2023	CRL	F	308	$243.60	$75,029	40,730 Direct	-0.75%	Disposed	19.0% (price as of 2026-08-19)
Feb. 16, 2023	CRL	M	3,205	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	502	$256.48	$128,753	41,038 Direct	-1.21%	Disposed	13.1% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	1,392	$255.65	$355,865	41,540 Direct	-3.24%	Disposed	13.4% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	417	$254.55	$106,147	42,932 Direct	-0.96%	Disposed	13.9% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	219	$253.78	$55,578	43,349 Direct	-0.50%	Disposed	14.3% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	157	$252.87	$39,701	43,568 Direct	-0.36%	Disposed	14.7% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	183	$251.56	$46,035	43,725 Direct	-0.42%	Disposed	15.3% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	78	$250.69	$19,554	43,908 Direct	-0.18%	Disposed	15.7% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	73	$249.22	$18,193	43,986 Direct	-0.17%	Disposed	16.4% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	100	$248.06	$24,806	44,059 Direct	-0.23%	Disposed	16.9% (price as of 2026-08-19)
Feb. 16, 2023	CRL	S 10b5-1	84	$246.13	$20,675	44,159 Direct	-0.19%	Disposed	17.8% (price as of 2026-08-19)
Feb. 16, 2023	CRL	M	3,205	$109.34	$350,435	44,243 Direct	+7.81%	Acquired	165.2% (price as of 2026-08-19)
Jan. 27, 2023	CRL	F	3,153	$244.29	$770,246	41,038 Direct	-7.13%	Disposed	18.7% (price as of 2026-08-19)
Jan. 27, 2023	CRL	A	8,435	—	—	44,191 Direct	+23.59%	Acquired	(price as of 2026-08-19)
May 29, 2022	CRL	F	218	$244.41	$53,281	35,756 Direct	-0.61%	Disposed	18.7% (price as of 2026-08-19)
May 28, 2022	CRL	F	150	$244.41	$36,662	35,974 Direct	-0.42%	Disposed	18.7% (price as of 2026-08-19)
May 27, 2022	CRL	A	6,634	$244.41	$1,621,416	6,634 Direct	—	Acquired	18.7% (price as of 2026-08-19)
May 27, 2022	CRL	A	2,455	—	—	36,124 Direct	+7.29%	Acquired	(price as of 2026-08-19)
Feb. 23, 2022	CRL	F	280	$289.58	$81,082	33,669 Direct	-0.82%	Disposed	0.1% (price as of 2026-08-19)
Feb. 22, 2022	CRL	F	274	$293.61	$80,449	33,949 Direct	-0.80%	Disposed	-1.2% (price as of 2026-08-19)
Jan. 28, 2022	CRL	F	3,877	$312.24	$1,210,554	34,223 Direct	-10.18%	Disposed	-7.1% (price as of 2026-08-19)
Jan. 28, 2022	CRL	A	11,029	—	—	38,100 Direct	+40.74%	Acquired	(price as of 2026-08-19)
Sept. 23, 2021	CRL	G	531	—	—	27,071 Direct	-1.92%	Disposed	(price as of 2026-08-19)
Sept. 14, 2021	CRL	S 10b5-1	2,344	$439.90	$1,031,126	27,602 Direct	-7.83%	Disposed	-34.1% (price as of 2026-08-19)
Sept. 13, 2021	CRL	S 10b5-1	7	$442.73	$3,099	29,946 Direct	-0.02%	Disposed	-34.5% (price as of 2026-08-19)
Sept. 13, 2021	CRL	S 10b5-1	72	$442.15	$31,835	29,953 Direct	-0.24%	Disposed	-34.4% (price as of 2026-08-19)
Sept. 13, 2021	CRL	S 10b5-1	2	$441.66	$883	30,025 Direct	-0.01%	Disposed	-34.3% (price as of 2026-08-19)
May 29, 2021	CRL	F	216	$337.99	$73,006	30,027 Direct	-0.71%	Disposed	-14.2% (price as of 2026-08-19)
May 28, 2021	CRL	A	3,659	$337.99	$1,236,705	3,659 Direct	—	Acquired	-14.2% (price as of 2026-08-19)
May 28, 2021	CRL	A	1,183	—	—	30,243 Direct	+4.07%	Acquired	(price as of 2026-08-19)
April 6, 2021	CRL	M	5,916	—	—	5,916 Direct	-50.00%	Disposed	(price as of 2026-08-19)
April 6, 2021	CRL	M	6,409	—	—	3,205 Direct	-66.66%	Disposed	(price as of 2026-08-19)
April 6, 2021	CRL	M	5,986	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
April 6, 2021	CRL	S 10b5-1	5,916	$304.85	$1,803,493	29,060 Direct	-16.91%	Disposed	-4.9% (price as of 2026-08-19)
April 6, 2021	CRL	M	5,916	$144.67	$855,868	34,976 Direct	+20.36%	Acquired	100.5% (price as of 2026-08-19)
April 6, 2021	CRL	S 10b5-1	6,409	$304.85	$1,953,784	29,060 Direct	-18.07%	Disposed	-4.9% (price as of 2026-08-19)
April 6, 2021	CRL	M	6,409	$109.34	$700,760	35,469 Direct	+22.05%	Acquired	165.2% (price as of 2026-08-19)
April 6, 2021	CRL	S 10b5-1	5,986	$298.00	$1,783,828	29,060 Direct	-17.08%	Disposed	-2.7% (price as of 2026-08-19)
April 6, 2021	CRL	M	5,986	$88.05	$527,067	35,046 Direct	+20.60%	Acquired	229.4% (price as of 2026-08-19)
April 5, 2021	CRL	M	999	—	—	5,986 Direct	-14.30%	Disposed	(price as of 2026-08-19)
April 5, 2021	CRL	S 10b5-1	999	$298.00	$297,702	29,060 Direct	-3.32%	Disposed	-2.7% (price as of 2026-08-19)
April 5, 2021	CRL	M	999	$88.05	$87,962	30,059 Direct	+3.44%	Acquired	229.4% (price as of 2026-08-19)
March 1, 2021	CRL	G	350	—	—	28,710 Direct	-1.20%	Disposed	(price as of 2026-08-19)
Feb. 24, 2021	CRL	F	322	$282.98	$91,120	29,060 Direct	-1.10%	Disposed	2.5% (price as of 2026-08-19)
Feb. 23, 2021	CRL	F	315	$283.59	$89,331	29,382 Direct	-1.06%	Disposed	2.3% (price as of 2026-08-19)
Feb. 22, 2021	CRL	F	308	$289.55	$89,181	29,697 Direct	-1.03%	Disposed	0.2% (price as of 2026-08-19)
Feb. 19, 2021	CRL	M	1,675	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-19)
Feb. 19, 2021	CRL	S	1,675	$293.92	$492,316	30,005 Direct	-5.29%	Disposed	-1.3% (price as of 2026-08-19)
Feb. 19, 2021	CRL	M	1,675	$73.70	$123,448	31,680 Direct	+5.58%	Acquired	293.5% (price as of 2026-08-19)
Jan. 29, 2021	CRL	F	4,709	$260.88	$1,228,484	30,005 Direct	-13.57%	Disposed	11.2% (price as of 2026-08-19)
Jan. 29, 2021	CRL	A	11,862	—	—	34,714 Direct	+51.91%	Acquired	(price as of 2026-08-19)
Aug. 20, 2020	CRL	S	933	$213.51	$199,205	22,852 Direct	-3.92%	Disposed	35.8% (price as of 2026-08-19)
May 29, 2020	CRL	A	6,500	—	—	6,500 Direct	—	Acquired	(price as of 2026-08-19)

Showing latest 100 of 273 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
Aug. 11, 2026	CRL	Stock Options (Right to Buy)	Common Stock (6,500)	$179.66	May 29, 2030	6,500	Disposed
May 31, 2024	CRL	Stock Options (Right to Buy)	Common Stock (8,722)	$208.44	May 31, 2034	8,722	Acquired
Jan. 10, 2024	CRL	Stock Options (Right to Buy)	Common Stock (5,916)	$144.67	Feb. 22, 2024	5,916	Disposed
Jan. 10, 2024	CRL	Stock Options (Right to Buy)	Common Stock (5,916)	$144.67	Feb. 22, 2024	5,916	Disposed
May 26, 2023	CRL	Stock Options (Right to Buy)	Common Stock (9,145)	$194.12	May 26, 2033	9,145	Acquired
Feb. 16, 2023	CRL	Stock Options (Right to Buy)	Common Stock (3,205)	$109.34	Feb. 23, 2023	3,205	Disposed
May 27, 2022	CRL	Stock Options (Right to Buy)	Common Stock (6,634)	$244.41	May 27, 2032	6,634	Acquired
May 28, 2021	CRL	Stock Options (Right to Buy)	Common Stock (3,659)	$337.99	May 28, 2031	3,659	Acquired
April 6, 2021	CRL	Stock Options (Right to Buy)	Common Stock (5,916)	$144.67	Feb. 22, 2024	5,916	Disposed
April 6, 2021	CRL	Stock Options (Right to Buy)	Common Stock (6,409)	$109.34	Feb. 23, 2023	6,409	Disposed
April 6, 2021	CRL	Stock Options (Right to Buy)	Common Stock (5,986)	$88.05	Feb. 24, 2022	5,986	Disposed
April 5, 2021	CRL	Stock Options (Right to Buy)	Common Stock (999)	$88.05	Feb. 24, 2022	999	Disposed
Feb. 19, 2021	CRL	Stock Options (Right to Buy)	Common Stock (1,675)	$73.70	Feb. 26, 2021	1,675	Disposed
May 29, 2020	CRL	Stock Options (Right to Buy)	Common Stock (6,500)	$179.66	May 29, 2030	6,500	Acquired
Nov. 13, 2019	CRL	Stock Options (Right to Buy)	Common Stock (3,204)	$109.34	Feb. 23, 2023	3,204	Disposed
Nov. 13, 2019	CRL	Stock Options (Right to Buy)	Common Stock (3,492)	$88.05	Feb. 24, 2022	3,492	Disposed
Nov. 13, 2019	CRL	Stock Options (Right to Buy)	Common Stock (1,675)	$73.70	Feb. 26, 2021	1,675	Disposed
Nov. 13, 2019	CRL	Stock Options (Right to Buy)	Common Stock (1,233)	$76.67	Feb. 27, 2020	1,233	Disposed
Feb. 22, 2019	CRL	Stock Options (Right to Buy)	Common Stock (11,832)	$144.67	Feb. 22, 2024	11,832	Acquired
March 6, 2018	CRL	Stock Options (Right to Buy)	Common Stock (3,492)	$88.05	Feb. 24, 2022	3,492	Disposed
March 6, 2018	CRL	Stock Options (Right to Buy)	Common Stock (1,675)	$73.70	Feb. 26, 2021	1,675	Disposed
March 6, 2018	CRL	Stock Options (Right to Buy)	Common Stock (1,233)	$76.67	Feb. 27, 2020	1,233	Disposed
March 6, 2018	CRL	Stock Options (Right to Buy)	Common Stock (913)	$59.41	Feb. 28, 2021	913	Disposed
Feb. 23, 2018	CRL	Stock Options (Right to Buy)	Common Stock (12,818)	$109.34	Feb. 23, 2023	12,818	Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 5 holdings

Securities held when first becoming an insider, per SEC Form 3.

Date	Ticker	Security	Shares	Ownership
Feb. 21, 2018	CRL	Common Stock	—	Direct
Feb. 21, 2018	CRL	Stock Options (Right to Buy)→ Common Stock (913)	913	Direct
Feb. 21, 2018	CRL	Stock Options (Right to Buy)→ Common Stock (2,466)	2,466	Direct
Feb. 21, 2018	CRL	Stock Options (Right to Buy)→ Common Stock (5,025)	5,025	Direct
Feb. 21, 2018	CRL	Stock Options (Right to Buy)→ Common Stock (13,969)	13,969	Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

CRL

COO

Fiscal year	Salary	Bonus	Stock awards	Option awards	Non-equity incentive	Pension change	Other	Total
2024	$742,485	—	$3,155,595	$798,237	$242,352	—	$117,806	$5,056,475
2023	$704,811	—	$2,964,471	$744,677	$442,830	—	$132,882	$4,989,672
2022	$650,000	—	$2,412,795	$601,505	$379,600	—	$121,630	$4,165,529

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.