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Repligen Corp

RGEN
Exchange
Nasdaq
Industry
Biological Products, (No Diagnostic Substances)
SEC CIK
0000730272

In the last 90 days, Repligen Corp insiders filed 0 open-market purchases and 5 sales; 506 institutions reported holding it in 13F filings for Q2 2026, worth $9.62B in total; 3 superinvestors hold it, including Maverick Capital and Duquesne Family Office.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Repligen Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
5 filings
2 insiders, $5.00M in total
Insiders trading
2
Net value
−$5.00M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Repligen Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Repligen Corp
NameTitleLast reported holdingLast filingFilings, past year
Loeillot OlivierChief Executive Officer48,369Sep 25, 20269
Hughes ViolettaCHIEF ACCOUNTING OFFICER6,331Sep 2, 20261
Garland Jason KCFO18,829Jul 17, 20264
Muir Glenn PDirector40,051May 18, 20263
Dawes Karen ADirector92,816May 18, 20262
Barthelemy NicolasDirector5,436May 18, 20261
Madaus Martin DDirector6,581May 18, 20261
Eglinton Manner CarrieDirector5,461May 18, 20261
Konstantinov KonstantinDirector3,889May 18, 20261
Mhatre RohinDirector5,014May 18, 20261
Pax MargaretDirector3,011May 18, 20261
Douglass Brian RobbCHIEF PRODUCT OFFICER7,985May 8, 20263
Kuriyel RalfSenior VP, R&D20,062Mar 23, 20263
Bylund JamesChief Operating Officer25,423Mar 23, 20264
Hunt AnthonyDirector89,062Mar 3, 20264
Gebski ChristineSee Remarks27,419May 15, 20240
Snodgres JonChief Financial Officer37,381May 16, 20230
Ryan Thomas F JrDirector1,457Mar 2, 20220

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Sep 25, 2026 (view filing)4:09 PM ETSep 241 dayLoeillot OlivierChief Executive OfficerSSale−12.9K$190.00−$2.46M−21.1%48.4K after2 lots10b5-1
Sep 22, 2026 (view filing)4:07 PM ETSep 211 dayLoeillot OlivierChief Executive OfficerSSale−5.43K$180.00−$976.7K−10.1%48.4K after10b5-1
Sep 8, 2026 (view filing)4:13 PM ETSep 44 daysLoeillot OlivierChief Executive OfficerSSale−3.04K$165.90−$503.5K−5.9%48.4K after10b5-1
Aug 21, 2026 (view filing)4:06 PM ETAug 201 dayLoeillot OlivierChief Executive OfficerSSale−5.43K$180.00−$976.7K−9.1%54.2K after10b5-1
Jul 17, 2026 (view filing)4:40 PM ETJul 161 dayGarland Jason KCFOSSale−530$150.00−$79.5K−2.7%18.8K after10b5-1
Jun 26, 2026 (view filing)Jun 251 dayGarland Jason KCFOSSale−733$145.00−$106.3K−3.6%19.4K after10b5-1
Apr 22, 2026 (view filing)Apr 211 dayLoeillot OlivierChief Executive OfficerSSale−3.83K$140.00−$536.5K−6.6%54.2K after10b5-1
Dec 18, 2025 (view filing)Dec 171 dayDawes Karen ADirectorSSale−275$161.00−$44.3K−0.3%91.8K after
Nov 26, 2025 (view filing)Nov 251 dayLoeillot OlivierChief Executive OfficerSSale−7.04K$170.00−$1.20M−16.4%35.9K after10b5-1
Nov 19, 2025 (view filing)Nov 181 dayBylund JamesChief Operating OfficerSSale−2.19K$151.21−$331.3K−9.2%21.5K after
Nov 14, 2025 (view filing)Nov 131 dayHunt AnthonyDirectorSSale−20.0K$154.61−$3.09M−19.9%80.7K after7 lots
Nov 13, 2025 (view filing)Nov 121 dayHunt AnthonyDirectorSSale−25.0K$156.88−$3.92M−19.9%100.7K after5 lots10b5-1
Sep 11, 2025 (view filing)Sep 101 dayHunt AnthonyDirectorSSale−29.1K$120.52−$3.51M−22.4%100.7K after6 lots
Aug 12, 2025 (view filing)Aug 84 daysMadaus Martin DDirectorPPurchase+1.80K$112.13+$201.8KNew position1.80K after
May 16, 2025 (view filing)May 151 dayHunt AnthonyDirectorSSale−26.4K$123.71−$3.27M−19.4%109.9K after5 lots10b5-1
Mar 19, 2025 (view filing)Mar 172 daysHunt AnthonyDirectorSSale−26.8K$152.51−$4.08M−16.4%136.3K after6 lots10b5-1
Mar 18, 2025 (view filing)Mar 171 dayPax MargaretDirectorPPurchase+250$150.69+$37.7K+31.5%1.04K after
Nov 22, 2024 (view filing)Nov 211 dayHunt AnthonyDirectorSSale−24.2K$139.67−$3.39M−14.8%139.8K after
Sep 12, 2024 (view filing)Sep 102 daysHunt AnthonyDirectorSSale−22.2K$145.37−$3.23M−13.7%139.8K after4 lots10b5-1
Aug 5, 2024 (view filing)Aug 23 daysKuriyel RalfSenior VP, R&DSSale−7.15K$159.35−$1.14M−36.8%12.3K after2 lots
Aug 1, 2024 (view filing)Aug 1Same dayKuriyel RalfSenior VP, R&DSSale−4.46K$165.67−$739.7K−18.8%19.3K after
Jun 14, 2024 (view filing)Jun 14Same dayMadaus Martin DDirectorPPurchase+1.61K$124.94+$201.8K+53.9%4.61K after2 lots
Jun 14, 2024 (view filing)Jun 14Same dayBarthelemy NicolasDirectorPPurchase+1.20K$125.45+$150.5K+34.6%4.67K after
Jun 14, 2024 (view filing)Jun 14Same dayHunt AnthonyChief Executive OfficerPPurchase+2.00K$124.08+$248.2K+1.2%165.2K after
May 22, 2024 (view filing)May 211 dayHunt AnthonyChief Executive OfficerSSale−20.1K$168.26−$3.38M−11.0%163.2K after6 lots10b5-1
Mar 12, 2024 (view filing)Mar 111 dayKuriyel RalfSenior VP, R&DSSale−3.52K$193.73−$681.3K−12.7%24.3K after
Mar 11, 2024 (view filing)Mar 83 daysHunt AnthonyChief Executive OfficerSSale−16.7K$197.44−$3.30M−8.3%185.2K after8 lots10b5-1
Feb 28, 2024 (view filing)Feb 271 dayDawes Karen ADirectorSSale−1.00K$193.35−$193.3K−1.1%87.4K after
Feb 26, 2024 (view filing)Feb 233 daysBylund JamesChief Operating OfficerSSale−4.37K$198.08−$866.2K−23.6%14.1K after
Nov 13, 2023 (view filing)Nov 103 daysGebski ChristineSee RemarksSSale−3.79K$147.13−$557.3K−11.6%28.8K after
Aug 30, 2023 (view filing)Aug 291 dayDawes Karen ADirectorSSale−850$171.38−$145.7K−1.0%83.7K after
May 8, 2023 (view filing)May 4-84 daysMadaus Martin DDirectorPPurchase+1.50K$158.84+$238.3K+1,351.4%1.61K after3 lots
Feb 17, 2023 (view filing)Feb 161 daySnodgres JonChief Financial OfficerSSale−5.65K$200.00−$1.13M−16.1%29.3K after
Dec 15, 2022 (view filing)Mar 16274 daysLateEglinton Manner CarrieDirectorPPurchase+625$175.02+$109.4K+42.2%2.11K after
Nov 14, 2022 (view filing)Nov 113 daysHunt AnthonyChief Executive OfficerSSale−25.0K$200.00−$5.00M−12.3%178.3K after
Sep 9, 2022 (view filing)Sep 9Same dayDawes Karen ADirectorSSale−775$227.17−$176.1K−1.0%76.4K after
Sep 9, 2022 (view filing)Sep 81 dayHunt AnthonyChief Executive OfficerSSale−26.4K$224.73−$5.93M−12.9%178.3K after8 lots
Aug 17, 2022 (view filing)Aug 161 daySnodgres JonChief Financial OfficerSSale−6.70K$252.86−$1.69M−16.3%34.5K after2 lots
Aug 12, 2022 (view filing)Aug 111 dayKuriyel RalfSenior VP, R&DSSale−4.84K$254.32−$1.23M−20.1%19.3K after2 lots
Aug 5, 2022 (view filing)Aug 41 dayGebski ChristineSee RemarksSSale−3.36K$243.01−$815.8K−9.8%30.7K after
Aug 4, 2022 (view filing)Aug 31 dayBylund JamesChief Operating OfficerSSale−2.00K$240.40−$480.8K−17.0%9.73K after
Aug 2, 2022 (view filing)Aug 11 daySnodgres JonChief Financial OfficerSSale−2.00K$220.00−$440.0K−5.1%37.2K after
Jul 22, 2022 (view filing)Jul 211 dayHunt AnthonyChief Executive OfficerSSale−24.8K$200.00−$4.96M−11.3%194.7K after
May 26, 2022 (view filing)May 251 dayDawes Karen ADirectorSSale−14.7K$150.51−$2.21M−16.1%76.5K after5 lots
Mar 2, 2022 (view filing)Mar 11 dayRyan Thomas F JrDirectorSSale−2.00K$198.03−$396.1K−57.9%1.46K after2 lots
Nov 19, 2021 (view filing)Nov 181 dayHunt AnthonyChief Executive OfficerSSale−17.4K$276.85−$4.80M−8.7%182.1K after7 lots
Nov 12, 2021 (view filing)Nov 102 daysDawes Karen ADirectorSSale−4.78K$263.93−$1.26M−5.0%91.2K after10 lots
Nov 4, 2021 (view filing)Nov 22 daysRyan Thomas F JrDirectorSSale+1.28K$302.00+$388.1K+10.7%13.3K after
Nov 4, 2021 (view filing)Nov 4Same dayRyan Thomas F JrDirectorSSale−1.00K$288.00−$288.0K−7.5%12.3K after
Nov 4, 2021 (view filing)Nov 22 daysDawes Karen ADirectorSSale−2.40K$303.94−$729.5K−2.6%91.2K after7 lots