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RGEN Insider Trading

Insider Ownership Percentage: 1.20%
Insider Buying (Last 12 Months): $239,506.50
Insider Selling (Last 12 Months): $7,721,077.22

Repligen Insider Trading History Chart

This chart shows the insider buying and selling history at Repligen by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Repligen Share Price & Price History

Current Price: $142.18
Price Change: ▲ Price Increase of +2.52 (1.80%)
As of 02/6/2026 05:00 PM ET

This chart shows the closing price history over time for RGEN up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Repligen Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
12/17/2025Karen A. DawesDirectorSell275$161.00$44,275.0091,821View SEC Filing Icon  
11/18/2025James BylundCOOSell2,191$151.21$331,301.1121,520View SEC Filing Icon  
11/18/2025James BylundCOOSell2,191$151.21$331,301.1121,520View SEC Filing Icon  
11/13/2025Anthony HuntDirectorSell20,000$154.61$3,092,200.0080,743View SEC Filing Icon  
11/12/2025Anthony HuntDirectorSell25,000$156.88$3,922,000.00100,743View SEC Filing Icon  
8/8/2025Martin D. MadausDirectorBuy1,800$112.13$201,834.001,800View SEC Filing Icon  
3/17/2025Margaret PaxDirectorBuy250$150.69$37,672.501,043View SEC Filing Icon  
9/10/2024Anthony HuntDirectorSell22,191$145.37$3,225,905.67139,840View SEC Filing Icon  
8/1/2024Ralf KuriyelVPSell4,465$165.67$739,716.5519,261View SEC Filing Icon  
6/14/2024Anthony HuntCEOBuy2,000$124.08$248,160.00165,177View SEC Filing Icon  
6/14/2024Martin D. MadausDirectorBuy1,615$124.94$201,778.104,613View SEC Filing Icon  
5/21/2024Anthony HuntCEOSell20,072$168.26$3,377,314.72163,177View SEC Filing Icon  
3/11/2024Ralf KuriyelVPSell3,517$193.73$681,348.4124,260View SEC Filing Icon  
3/8/2024Anthony HuntCEOSell16,707$197.44$3,298,630.08185,249View SEC Filing Icon  
2/27/2024Karen A. DawesDirectorSell1,000$193.35$193,350.0087,367View SEC Filing Icon  
2/23/2024James BylundCOOSell4,373$198.08$866,203.8414,135View SEC Filing Icon  
11/10/2023Christine GebskiInsiderSell3,788$147.13$557,328.4428,787View SEC Filing Icon  
8/29/2023Karen A. DawesDirectorSell850$171.38$145,673.0083,741View SEC Filing Icon  
5/8/2023Martin D. MadausDirectorBuy500$156.18$78,090.001,611View SEC Filing Icon  
5/4/2023Martin D. MadausDirectorBuy500$161.15$80,575.00611View SEC Filing Icon  
See Full Table

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

This chart shows the instiutional buying and selling at RGEN by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Repligen Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
2/6/2026Americana Partners LLC1,367$0.22M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/6/2026Legato Capital Management LLC20,155$3.30M0.3%-4.5%0.036%Search for SEC Filing on Google Icon
2/6/2026Global Retirement Partners LLC1,755$0.29M0.0%+404.3%0.003%Search for SEC Filing on Google Icon
2/6/2026Intrust Bank NA1,632$0.27M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/6/2026Jag Capital Management LLC1,346$0.22M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/6/2026PNC Financial Services Group Inc.4,464$0.73M0.0%+32.4%0.008%Search for SEC Filing on Google Icon
2/6/2026Handelsbanken Fonder AB18,719$3.07M0.0%+4.6%0.033%Search for SEC Filing on Google Icon
2/6/2026TimesSquare Capital Management LLC435,687$71.39M1.1%+20.3%0.774%Search for SEC Filing on Google Icon
2/6/2026ProShare Advisors LLC2,121$0.35M0.0%-5.7%0.004%Search for SEC Filing on Google Icon
2/6/2026HighTower Advisors LLC3,436$0.56M0.0%+63.1%0.006%Search for SEC Filing on Google Icon
2/6/2026Envestnet Portfolio Solutions Inc.2,650$0.43M0.0%N/A0.005%Search for SEC Filing on Google Icon
2/5/2026North Dakota State Investment Board1,849$0.30M0.0%N/A0.003%Search for SEC Filing on Google Icon
2/5/2026Beese Fulmer Investment Management Inc.1,234$0.20M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/5/2026Stephens Investment Management Group LLC657,111$107.67M1.4%+9.8%1.167%Search for SEC Filing on Google Icon
2/5/2026Dana Investment Advisors Inc.5,274$0.86M0.0%-10.6%0.009%Search for SEC Filing on Google Icon
2/5/2026Stephens Inc. AR46,986$7.73M0.1%-3.8%0.083%Search for SEC Filing on Google Icon
2/5/2026Thrivent Financial for Lutherans411,706$67.46M0.1%-10.3%0.731%Search for SEC Filing on Google Icon
2/5/2026New York Life Investment Management LLC4,650$0.76M0.0%-12.8%0.008%Search for SEC Filing on Google Icon
2/4/2026Oregon Public Employees Retirement Fund10,541$1.73M0.0%-1.4%0.019%Search for SEC Filing on Google Icon
2/4/2026Valeo Financial Advisors LLC1,223$0.20M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/4/2026Drive Wealth Management LLC3,292$0.54M0.1%-8.7%0.006%Search for SEC Filing on Google Icon
2/4/2026Securian Asset Management Inc.3,842$0.63M0.0%-2.5%0.007%Search for SEC Filing on Google Icon
2/4/2026Marco Investment Management LLC1,255$0.21M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/3/2026NewEdge Wealth LLC1,492$0.24M0.0%+5.3%0.003%Search for SEC Filing on Google Icon
2/3/2026Crossmark Global Holdings Inc.3,859$0.63M0.0%+11.8%0.007%Search for SEC Filing on Google Icon
2/3/2026Pier Capital LLC54,147$8.87M1.4%-1.5%0.096%Search for SEC Filing on Google Icon
2/3/2026Diversify Wealth Management LLC8,683$1.45M0.1%+9.4%0.015%Search for SEC Filing on Google Icon
2/3/2026Crestwood Advisors Group LLC1,715$0.28M0.0%-30.2%0.003%Search for SEC Filing on Google Icon
2/3/2026Praxis Investment Management Inc.1,290$0.21M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/3/2026Swedbank AB25,300$4.15M0.0%N/A0.045%Search for SEC Filing on Google Icon
2/3/2026Hemenway Trust Co LLC3,850$0.63M0.0%-4.9%0.007%Search for SEC Filing on Google Icon
2/2/2026Alliance Wealth Advisors LLC UT4,810$0.79M0.2%-26.1%0.009%Search for SEC Filing on Google Icon
2/2/2026Truist Financial Corp3,672$0.60M0.0%+50.8%0.007%Search for SEC Filing on Google Icon
2/2/2026Strs Ohio50,262$8.24M0.0%+2.7%0.089%Search for SEC Filing on Google Icon
2/2/2026Artemis Investment Management LLP410,369$67.24M0.8%+18.3%0.729%Search for SEC Filing on Google Icon
2/2/2026Kornitzer Capital Management Inc. KS83,780$13.73M0.3%+7.0%0.149%Search for SEC Filing on Google Icon
2/2/2026Horizon Investments LLC515$84K0.0%N/A0.001%Search for SEC Filing on Google Icon
2/2/2026Fifth Third Bancorp3,772$0.62M0.0%+19.7%0.007%Search for SEC Filing on Google Icon
2/2/2026Conestoga Capital Advisors LLC1,057,975$173.36M2.9%+10.6%1.880%Search for SEC Filing on Google Icon
2/2/2026Oppenheimer & Co. Inc.1,623$0.27M0.0%+8.2%0.003%Search for SEC Filing on Google Icon
2/2/2026Oppenheimer Asset Management Inc.17,925$2.94M0.0%+6.4%0.032%Search for SEC Filing on Google Icon
1/30/2026Delta Investment Management LLC23,544$3.86M0.7%-53.6%0.042%Search for SEC Filing on Google Icon
1/30/2026Jennison Associates LLC123,600$20.25M0.0%N/A0.220%Search for SEC Filing on Google Icon
1/30/2026State of New Jersey Common Pension Fund D18,835$3.09M0.0%-1.3%0.033%Search for SEC Filing on Google Icon
1/30/2026Rachor Investment Advisory Services LLC200$33K0.0%N/A0.000%Search for SEC Filing on Google Icon
1/30/2026M&T Bank Corp2,031$0.33M0.0%N/A0.004%Search for SEC Filing on Google Icon
1/29/2026Pictet Asset Management Holding SA7,544$1.24M0.0%+4.3%0.013%Search for SEC Filing on Google Icon
1/29/2026Verdence Capital Advisors LLC3,802$0.62M0.0%-22.6%0.007%Search for SEC Filing on Google Icon
1/29/2026UBS Group AG348,388$57.09M0.0%-23.8%0.619%Search for SEC Filing on Google Icon
1/29/2026Sanctuary Advisors LLC1,264$0.21M0.0%N/A0.002%Search for SEC Filing on Google Icon
1/29/2026Teachers Retirement System of The State of Kentucky101,945$16.71M0.1%-16.0%0.181%Search for SEC Filing on Google Icon
1/29/2026Vanguard Group Inc.4,993,945$818.31M0.0%-1.0%8.872%Search for SEC Filing on Google Icon
1/29/2026Impax Asset Management Group plc413,384$67.74M0.4%-41.2%0.734%Search for SEC Filing on Google Icon
1/29/2026Sava Infond d.o.o.1,200$0.20M0.0%+500.0%0.002%Search for SEC Filing on Google Icon
1/29/2026China Universal Asset Management Co. Ltd.3,600$0.59M0.0%-28.0%0.006%Search for SEC Filing on Google Icon
1/28/2026Arizona State Retirement System14,863$2.44M0.0%-5.8%0.026%Search for SEC Filing on Google Icon
1/28/2026M&T Bank Corp181,978$29.82M0.1%N/A0.323%Search for SEC Filing on Google Icon
1/27/2026Krilogy Financial LLC10,756$1.76M0.1%-21.3%0.019%Search for SEC Filing on Google Icon
1/27/2026Bayforest Capital Ltd195$32K0.0%N/A0.000%Search for SEC Filing on Google Icon
1/26/2026Mirae Asset Global Investments Co. Ltd.15,051$2.47M0.0%-21.9%0.027%Search for SEC Filing on Google Icon
1/26/2026Slow Capital Inc.41,600$6.82M0.8%-5.6%0.074%Search for SEC Filing on Google Icon
1/26/2026CWM LLC950$0.16M0.0%+182.7%0.002%Search for SEC Filing on Google Icon
1/23/2026Farther Finance Advisors LLC335$55K0.0%+61.8%0.001%Search for SEC Filing on Google Icon
1/23/2026State of Alaska Department of Revenue5,234$0.86M0.0%-6.5%0.009%Search for SEC Filing on Google Icon
1/23/2026Gibbs Wealth Management5,360$0.89M0.2%N/A0.010%Search for SEC Filing on Google Icon
1/23/2026Diversify Advisory Services LLC3,439$0.56M0.0%+14.1%0.006%Search for SEC Filing on Google Icon
1/22/2026Massachusetts Financial Services Co. MA1,215,527$199.18M0.1%N/A2.159%Search for SEC Filing on Google Icon
1/21/2026Yousif Capital Management LLC14,218$2.32M0.0%-1.9%0.025%Search for SEC Filing on Google Icon
1/21/2026Sivik Global Healthcare LLC25,000$4.10M1.2%-9.1%0.044%Search for SEC Filing on Google Icon
1/21/2026Azzad Asset Management Inc. ADV3,314$0.54M0.1%-59.5%0.006%Search for SEC Filing on Google Icon
1/21/2026Portside Wealth Group LLC5,713$0.94M0.1%+159.4%0.010%Search for SEC Filing on Google Icon
1/20/2026Whalen Wealth Management Inc.2,747$0.45M0.2%-19.5%0.005%Search for SEC Filing on Google Icon
1/16/2026FNY Investment Advisers LLC850$0.14M0.0%N/A0.002%Search for SEC Filing on Google Icon
1/16/2026Banque Pictet & Cie SA17,910$2.94M0.0%-3.2%0.032%Search for SEC Filing on Google Icon
1/15/2026Allspring Global Investments Holdings LLC311,175$51.14M0.1%+2.4%0.553%Search for SEC Filing on Google Icon
1/15/2026Retirement Systems of Alabama63,505$10.41M0.0%-0.7%0.113%Search for SEC Filing on Google Icon
1/14/2026Exchange Traded Concepts LLC515$84K0.0%N/A0.001%Search for SEC Filing on Google Icon
1/13/2026Riverbridge Partners LLC313,365$51.35M1.0%-8.8%0.557%Search for SEC Filing on Google Icon
1/13/2026Norden Group LLC4,112$0.67M0.1%+73.6%0.007%Search for SEC Filing on Google Icon
1/12/2026Moody National Bank Trust Division1,428$0.23M0.0%-10.1%0.003%Search for SEC Filing on Google Icon
1/12/2026E. Ohman J or Asset Management AB33,689$5.52M0.1%N/A0.060%Search for SEC Filing on Google Icon
1/9/2026Congress Asset Management Co.746,306$122.29M0.9%+241.4%1.326%Search for SEC Filing on Google Icon
1/9/2026SG Americas Securities LLC14,893$2.44M0.0%-0.5%0.026%Search for SEC Filing on Google Icon
1/9/2026Diversified Trust Co.13,332$2.19M0.0%+8.8%0.024%Search for SEC Filing on Google Icon
1/8/2026Wealth Enhancement Advisory Services LLC4,354$0.75M0.0%+8.8%0.008%Search for SEC Filing on Google Icon
1/7/2026Clark & Stuart Inc1,400$0.23M0.2%N/A0.002%Search for SEC Filing on Google Icon
1/7/2026Covea Finance28,000$4.59M0.2%N/A0.050%Search for SEC Filing on Google Icon
1/5/2026GAMMA Investing LLC1,094$0.18M0.0%+37.1%0.002%Search for SEC Filing on Google Icon
12/15/2025Hudson Bay Capital Management LP21,003$2.81M0.0%N/A0.037%Search for SEC Filing on Google Icon
12/2/2025Swiss Life Asset Management Ltd2,477$0.33M0.0%N/A0.004%Search for SEC Filing on Google Icon
12/1/2025Groupama Asset Managment401,534$53.67M0.2%-0.9%0.713%Search for SEC Filing on Google Icon
11/21/2025CIBC Bancorp USA Inc.3,632$0.49M0.0%N/A0.006%Search for SEC Filing on Google Icon
11/20/2025Kensington Investment Counsel LLC8,092$1.08M0.4%-11.2%0.014%Search for SEC Filing on Google Icon
11/20/2025Wilmington Savings Fund Society FSB513$69K0.0%+2,750.0%0.001%Search for SEC Filing on Google Icon
11/19/2025Danske Bank A S800$0.11M0.0%N/A0.001%Search for SEC Filing on Google Icon
11/18/2025Advisory Services Network LLC1,268$0.17M0.0%N/A0.002%Search for SEC Filing on Google Icon
11/17/2025Armistice Capital LLC2,367$0.32M0.0%N/A0.004%Search for SEC Filing on Google Icon
11/17/2025CANADA LIFE ASSURANCE Co36,599$4.54M0.0%+0.3%0.065%Search for SEC Filing on Google Icon
11/17/2025Woodline Partners LP105,449$14.10M0.1%+927.0%0.187%Search for SEC Filing on Google Icon
11/17/2025Dark Forest Capital Management LP2,994$0.40M0.0%-59.5%0.005%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Repligen logo
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.
Read More on Repligen

Today's Range

Now: $142.18
Low: $139.80
High: $145.59

50 Day Range

MA: $161.90
Low: $139.66
High: $172.26

52 Week Range

Now: $142.18
Low: $102.96
High: $175.77

Volume

865,885 shs

Average Volume

642,681 shs

Market Capitalization

$8.00 billion

P/E Ratio

7,112.56

Dividend Yield

N/A

Beta

1.13

Who are the company insiders with the largest holdings of Repligen?

Repligen's top insider investors include:
  1. Anthony Hunt (CEO)
  2. Anthony Hunt (Director)
  3. Karen A Dawes (Director)
  4. Ralf Kuriyel (VP)
  5. James Bylund (COO)
  6. Martin D Madaus (Director)
  7. Margaret Pax (Director)
Learn More about top insider investors at Repligen.

Who are the major institutional investors of Repligen?

Repligen's top institutional shareholders include:
  1. Vanguard Group Inc. — 8.87%
  2. Massachusetts Financial Services Co. MA — 2.16%
  3. Conestoga Capital Advisors LLC — 1.88%
  4. Congress Asset Management Co. — 1.33%
  5. Stephens Investment Management Group LLC — 1.17%
  6. TimesSquare Capital Management LLC — 0.77%
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:
  1. Impax Asset Management Group plc
  2. UBS Group AG
  3. Vanguard Group Inc.
  4. Thrivent Financial for Lutherans
  5. Riverbridge Partners LLC
  6. Delta Investment Management LLC
  7. Teachers Retirement System of The State of Kentucky
  8. Azzad Asset Management Inc. ADV
During the last year, company insiders that have sold Repligen company stock include:
  1. Anthony Hunt (CEO)
  2. Anthony Hunt (Director)
  3. Karen A Dawes (Director)
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:
  1. Massachusetts Financial Services Co. MA
  2. Congress Asset Management Co.
  3. M&T Bank Corp
  4. Jennison Associates LLC
  5. Conestoga Capital Advisors LLC
  6. TimesSquare Capital Management LLC
  7. Artemis Investment Management LLP
  8. Stephens Investment Management Group LLC
Within the previous year, these company insiders have bought Repligen stock:
  1. Anthony Hunt (CEO)
  2. Anthony Hunt (Director)
  3. Karen A Dawes (Director)
Learn More investors buying Repligen stock.