RGEN Insider Trading

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Insider Trading History
Frequently Asked Questions
About

Insider Ownership Percentage: 0.60%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $7,827,362.22

Repligen Insider Trading History Chart

Repligen Share Price & Price History

^$181.71

▲ +0.999 (0.55%)

As of 09/22/2026 09:48 AM ET

Days: 30 | 90 | 365

Repligen Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
6/25/2026	Jason K Garland	CFO	Sell	733	$145.00	$106,285.00	19,359
12/17/2025	Karen A. Dawes	Director	Sell	275	$161.00	$44,275.00	91,821
11/18/2025	James Bylund	COO	Sell	2,191	$151.21	$331,301.11	21,520
11/18/2025	James Bylund	COO	Sell	2,191	$151.21	$331,301.11	21,520
11/13/2025	Anthony Hunt	Director	Sell	20,000	$154.61	$3,092,200.00	80,743
11/12/2025	Anthony Hunt	Director	Sell	25,000	$156.88	$3,922,000.00	100,743
8/8/2025	Martin D. Madaus	Director	Buy	1,800	$112.13	$201,834.00	1,800
3/17/2025	Margaret Pax	Director	Buy	250	$150.69	$37,672.50	1,043
9/10/2024	Anthony Hunt	Director	Sell	22,191	$145.37	$3,225,905.67	139,840
8/1/2024	Ralf Kuriyel	VP	Sell	4,465	$165.67	$739,716.55	19,261
6/14/2024	Anthony Hunt	CEO	Buy	2,000	$124.08	$248,160.00	165,177
6/14/2024	Martin D. Madaus	Director	Buy	1,615	$124.94	$201,778.10	4,613
5/21/2024	Anthony Hunt	CEO	Sell	20,072	$168.26	$3,377,314.72	163,177
3/11/2024	Ralf Kuriyel	VP	Sell	3,517	$193.73	$681,348.41	24,260
3/8/2024	Anthony Hunt	CEO	Sell	16,707	$197.44	$3,298,630.08	185,249
2/27/2024	Karen A. Dawes	Director	Sell	1,000	$193.35	$193,350.00	87,367
2/23/2024	James Bylund	COO	Sell	4,373	$198.08	$866,203.84	14,135
11/10/2023	Christine Gebski	Insider	Sell	3,788	$147.13	$557,328.44	28,787

SEC Filings (Institutional Ownership Changes) for Repligen (NASDAQ:RGEN)

97.64% of Repligen stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

Repligen Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
9/9/2026	Tidal Investments LLC	8,863	$1.21M	0.0%	+75.2%	0.016%
9/9/2026	Engineers Gate Manager LP	7,646	$1.04M	0.0%	+146.0%	0.014%
9/9/2026	Baird Financial Group Inc.	144,571	$19.73M	0.0%	-15.8%	0.256%
9/8/2026	Arizona State Retirement System	14,395	$1.96M	0.0%	-2.0%	0.026%
9/8/2026	Waverly Advisors LLC	32,751	$4.47M	0.0%	+10.1%	0.058%
9/8/2026	Nykredit A S	1,968	$0.27M	0.0%	N/A	0.003%
8/27/2026	Corient Private Wealth LP	11,319	$1.54M	0.0%	+420.9%	0.020%
8/26/2026	Amundi	12,117	$1.65M	0.0%	-73.0%	0.021%
8/25/2026	VIRGINIA RETIREMENT SYSTEMS ET Al	8,600	$1.17M	0.0%	N/A	0.015%
8/23/2026	Angeles Wealth Management LLC	2,757	$0.38M	0.0%	+6.6%	0.005%
8/21/2026	Nykredit A S	1,968	$0.27M	0.0%	N/A	0.003%
8/21/2026	B. Metzler seel. Sohn & Co. AG	26,361	$3.60M	0.0%	+52.8%	0.047%
8/20/2026	Moore Capital Management LP	37,549	$5.12M	0.1%	N/A	0.067%
8/20/2026	Northwestern Mutual Wealth Management Co.	381	$52K	0.0%	-52.5%	0.001%
8/20/2026	Thornburg Investment Management Inc.	43,887	$5.99M	0.1%	+49.3%	0.078%
8/19/2026	UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	161,713	$22.06M	0.0%	-1.2%	0.287%
8/19/2026	Van ECK Associates Corp	17,887	$2.44M	0.0%	+173.8%	0.032%
8/19/2026	Hsbc Holdings PLC	24,170	$3.30M	0.0%	+22.2%	0.043%
8/18/2026	North Star Asset Management Inc.	77,561	$10.58M	0.4%	N/A	0.137%
8/18/2026	United Capital Financial Advisors LLC	2,790,650	$380.76M	2.1%	N/A	4.944%
8/18/2026	Equitable Holdings Inc.	11,404	$1.56M	0.0%	N/A	0.020%
8/18/2026	Public Employees Retirement System of Ohio	55,503	$7.57M	0.0%	N/A	0.098%
8/17/2026	Corient Private Wealth LP	11,286	$1.54M	0.0%	N/A	0.020%
8/17/2026	Bamco Inc. NY	748,466	$102.12M	0.2%	N/A	1.326%
8/17/2026	Bank of America Corp DE	426,291	$58.16M	0.0%	N/A	0.755%
8/15/2026	American Capital Management Inc.	361,055	$49.26M	2.2%	N/A	0.640%
8/15/2026	Caisse de depot et placement du Quebec	2,300	$0.31M	0.0%	N/A	0.004%
8/15/2026	Jupiter Topco LLC	406,001	$55.39M	0.0%	N/A	0.719%
8/15/2026	ABS Investment Management LLC	136	$191.02M	0.1%	N/A	0.000%
8/14/2026	Hsbc Holdings PLC	24,170	$3.30M	0.0%	N/A	0.043%
8/14/2026	EFG International AG	40,543	$5.53M	0.1%	N/A	0.072%
8/14/2026	Primecap Management Co. CA	323,268	$44.11M	0.0%	N/A	0.573%
8/14/2026	Canada Pension Plan Investment Board	1,900	$0.26M	0.0%	N/A	0.003%
8/14/2026	Osterweis Capital Management Inc.	110,995	$15.14M	0.7%	N/A	0.197%
8/14/2026	Legal & General Group Plc	68,988	$9.41M	0.0%	N/A	0.122%
8/14/2026	The Manufacturers Life Insurance Company	38,172	$5.21M	0.0%	N/A	0.068%
8/14/2026	Kelly Lawrence W & Associates Inc. CA	59,250	$8.08M	1.7%	N/A	0.105%
8/13/2026	Blue Whale Capital LLP	178,377	$24.34M	0.8%	N/A	0.316%
8/13/2026	Connor Clark & Lunn Investment Management Ltd.	23,577	$3.22M	0.0%	N/A	0.042%
8/13/2026	Bank of Nova Scotia	25,992	$3.55M	0.0%	N/A	0.046%
8/12/2026	Commerce Bank	13,920	$1.90M	0.0%	N/A	0.025%
8/12/2026	Weitz Investment Management Inc.	40,800	$5.57M	0.4%	N/A	0.072%
8/12/2026	Northwestern Mutual Wealth Management Co.	381	$52K	0.0%	N/A	0.001%
8/12/2026	Evolve Private Wealth LLC	3,801	$0.52M	0.0%	N/A	0.007%
8/12/2026	William Blair Investment Management LLC	788,571	$107.59M	0.3%	N/A	1.397%
8/12/2026	Callan Family Office LLC	4,712	$0.64M	0.0%	N/A	0.008%
8/11/2026	Allworth Financial LP	524	$71K	0.0%	N/A	0.001%
8/11/2026	B. Metzler seel. Sohn & Co. AG	26,361	$3.60M	0.0%	N/A	0.047%
8/11/2026	D L Carlson Investment Group Inc.	4,098	$0.56M	0.1%	N/A	0.007%
8/10/2026	Diversify Advisory Services LLC	18,594	$2.44M	0.0%	N/A	0.033%
8/8/2026	Alpine Woods Capital Investors LLC	2,165	$0.30M	0.1%	N/A	0.004%
8/7/2026	Rice Hall James & Associates LLC	18,833	$2.57M	0.1%	N/A	0.033%
8/7/2026	Trust Co. of Vermont	520	$71K	0.0%	N/A	0.001%
8/7/2026	TimesSquare Capital Management LLC	446,964	$60.98M	0.9%	N/A	0.792%
8/7/2026	Persistent Asset Partners Ltd	3,902	$0.53M	0.2%	N/A	0.007%
8/6/2026	Global Retirement Partners LLC	4,799	$0.66M	0.0%	N/A	0.009%
8/6/2026	GSA Capital Partners LLP	2,461	$0.34M	0.0%	N/A	0.004%
8/3/2026	Oppenheimer Asset Management Inc.	46,326	$6.32M	0.1%	N/A	0.082%
7/10/2026	Wasatch Advisors LP	1,590,251	$216.97M	1.4%	+27.9%	2.819%
7/10/2026	Handelsbanken Fonder AB	22,070	$3.01M	0.0%	+11.8%	0.039%
7/9/2026	Everhart Financial Group Inc.	2,219	$0.30M	0.0%	N/A	0.004%
7/8/2026	Trust Point Inc.	1,755	$0.24M	0.0%	-32.2%	0.003%
7/8/2026	Assenagon Asset Management S.A.	70,995	$9.69M	0.0%	N/A	0.126%
7/7/2026	Balefire LLC	2,019	$0.28M	0.0%	N/A	0.004%
7/7/2026	GAMMA Investing LLC	1,944	$0.27M	0.0%	+28.7%	0.003%
7/7/2026	Harbor Investment Advisory LLC	523	$71K	0.0%	+198.9%	0.001%
7/7/2026	Moody National Bank Trust Division	17,728	$2.42M	0.2%	N/A	0.031%
6/18/2026	Pacer Advisors Inc.	8,337	$0.98M	0.0%	-20.4%	0.015%
6/1/2026	Integrated Investment Consultants LLC	2,248	$0.27M	0.1%	-4.7%	0.004%
5/29/2026	Perceptive Advisors LLC	280,541	$33.05M	0.6%	-11.1%	0.497%
5/28/2026	Avidity Partners Management LP	77,800	$9.17M	1.8%	+54.7%	0.138%
5/27/2026	Alpine Woods Capital Investors LLC	2,297	$0.27M	0.1%	-62.6%	0.004%
5/26/2026	Glenmede Trust Co. NA	8,268	$0.97M	0.0%	+10.3%	0.015%
5/22/2026	Summitry LLC	2,385	$0.28M	0.0%	+37.0%	0.004%
5/22/2026	Segall Bryant & Hamill LLC	155,025	$18.27M	0.2%	+5.5%	0.275%
5/19/2026	Kensington Investment Counsel LLC	2,107	$0.25M	0.1%	-59.8%	0.004%
5/18/2026	Amundi	44,959	$5.30M	0.0%	+7.0%	0.080%
5/18/2026	California State Teachers Retirement System	61,860	$7.29M	0.0%	+22.1%	0.110%
5/18/2026	Ranger Investment Management L.P.	161,135	$18.99M	1.4%	-0.8%	0.286%
5/18/2026	Eversept Partners LP	120,785	$14.23M	0.8%	N/A	0.214%
5/16/2026	American Capital Management Inc.	357,720	$42.15M	2.3%	+6.7%	0.634%
5/16/2026	The Manufacturers Life Insurance Company	49,940	$5.88M	0.0%	-12.5%	0.089%
5/16/2026	Maverick Capital Ltd.	1,518,805	$178.95M	2.1%	N/A	2.693%
5/16/2026	Quantinno Capital Management LP	11,888	$1.40M	0.0%	+5.4%	0.021%
5/15/2026	Rice Hall James & Associates LLC	20,151	$2.37M	0.1%	-1.9%	0.036%
5/15/2026	Waverly Advisors LLC	29,742	$3.50M	0.0%	-3.5%	0.053%
5/15/2026	Granahan Investment Management LLC	86,953	$10.25M	0.5%	+20.8%	0.154%
5/15/2026	Wealth Alliance LLC	2,529	$0.30M	0.0%	+18.1%	0.004%
5/14/2026	Public Employees Retirement System of Ohio	52,811	$6.22M	0.0%	+16.9%	0.094%
5/14/2026	Bank of Nova Scotia	22,017	$2.59M	0.0%	-50.5%	0.039%
5/14/2026	Gibbs Wealth Management	10,713	$1.26M	0.2%	+99.9%	0.019%
5/14/2026	Sei Investments Co.	272,103	$32.06M	0.0%	+49.5%	0.482%
5/14/2026	State of Wyoming	2,101	$0.25M	0.0%	-6.5%	0.004%
5/13/2026	First Trust Advisors LP	630,070	$74.24M	0.1%	+122.8%	1.117%
5/12/2026	Westpac Banking Corp	11,410	$1.34M	0.1%	-7.2%	0.020%
5/8/2026	PNC Financial Services Group Inc.	7,271	$0.86M	0.0%	+62.9%	0.013%
5/7/2026	Dimensional Fund Advisors LP	854,741	$100.68M	0.0%	+6.3%	1.516%
5/7/2026	KBC Group NV	1,837	$0.22M	0.0%	+20.7%	0.003%
5/7/2026	Swiss National Bank	105,800	$12.47M	0.0%	+0.4%	0.188%
5/7/2026	Roubaix Capital LLC	54,555	$6.43M	3.0%	N/A	0.097%

Data available starting January 2016

Repligen Corporation develops and commercializes bioprocessing technologies and systems for use in biological drug manufacturing process in North America, Europe, the Asia Pacific, and internationally. It offers Protein A ligands that are the binding components of Protein A affinity chromatography resins; and cell culture growth factor products. The company's chromatography products include OPUS pre-packed chromatography columns, which are used in the purification of biologics; and OPUS smaller-scale columns that are used in the high throughput process development screening, viral clearance validation studies, and scale down validation of chromatography processes. It also offers ELISA test kits; and chromatography resins under the CaptivA brand. In addition, the company provides filtration products, such as XCell Alternating Tangential Flow systems that are filtration devices used in upstream perfusion and cell culture processing; TangenX flat sheet cassettes, which are used in downstream biologic drug concentration, buffer exchange, and formulation processes; KrosFlo tangential flow filtration and tangential flow depth filtration systems; Spectra/Por laboratory and process dialysis products, and ProConnex TFDF flow paths. Further, it provides process analytics products, such as slope spectroscopy systems under the SoloVPE, FlowVPE, and FlowVPX brands. The company sells its products to life sciences, biopharmaceutical, and diagnostics companies; laboratory researchers; and contract manufacturing organizations. Repligen Corporation has collaboration agreements with Navigo Proteins GmbH to develop multiple affinity ligands. The company was incorporated in 1981 and is headquartered in Waltham, Massachusetts.

Today's Range

Now: $181.71

$181.00

50 Day Range

MA: $162.21

$131.06

$182.03

52 Week Range

Now: $181.71

$100.99

$188.73

Volume

584 shs

Average Volume

1,009,408 shs

Market Capitalization

$10.26 billion

P/E Ratio

248.77

Dividend Yield

N/A

Beta

1.05

Who are the company insiders with the largest holdings of Repligen?: Repligen's top insider investors include:
Roy T Eddleman (Major Shareholder)
Anthony Hunt (CEO)
Anthony Hunt (Director)
Karen A Dawes (Director)
Karen A Dawes (Director)
Jon Snodgres (CFO)
Christine Gebski (Insider)
Howard Benjamin (VP)
Glenn L Md Cooper (Director)
Ralf Kuriyel (VP)
Learn More about top insider investors at Repligen.
Who are the major institutional investors of Repligen?: Repligen's top institutional shareholders include:
United Capital Financial Advisors LLC — 4.94%
Wasatch Advisors LP — 2.82%
William Blair Investment Management LLC — 1.40%
Bamco Inc. NY — 1.33%
TimesSquare Capital Management LLC — 0.79%
Bank of America Corp DE — 0.76%
Learn More about top institutional investors of Repligen stock.
Which institutional investors are selling Repligen stock?: Within the last quarter, RGEN stock was sold by these institutional investors:
Amundi
Baird Financial Group Inc.
UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
California State Teachers Retirement System
Trust Point Inc.
Northwestern Mutual Wealth Management Co.
Arizona State Retirement System
During the last year, company insiders that have sold Repligen company stock include:
Anthony Hunt (Director)
Karen A Dawes (Director)
James Bylund (COO)
Jason K Garland (CFO)
Learn More investors selling Repligen stock.
Which institutional investors are buying Repligen stock?: During the previous quarter, RGEN stock was bought by institutional investors including:
United Capital Financial Advisors LLC
William Blair Investment Management LLC
Bamco Inc. NY
TimesSquare Capital Management LLC
Bank of America Corp DE
Jupiter Topco LLC
American Capital Management Inc.
Wasatch Advisors LP
Within the previous year, these company insiders have bought Repligen stock:
Martin D Madaus (Director)
Margaret Pax (Director)
Learn More investors buying Repligen stock.