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Repligen Corporation (RGEN) institutional ownership

Latest close $131.06 Jul 27, 2026
Market cap$9.0B 52-week range SectorHealthcare
Funds holding · Q1 2026
445
reported RGEN position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net bought $455M
223 buyers · 222 sellers

Repligen Corporation (RGEN) price and institutional activity

Dates

Q1 2026

$1.3B bought by 223 investors
Maverick Capital Ltd$212MWasatch Advisors LP$174M +221 more
$889M sold by 222 investors
Millennium Management LLC-$88MBlackRock-$87M +220 more
Bought Sold Totals per quarter; hover a bar for the names.

Repligen Corporation (RGEN) institutional activity · 445

Investor Type Est. change Change Δ Own Date
Maverick Capital Ltd · New +$212M
Change +1.5M Date Q1 2026
Maverick Capital Ltd New· Q1 2026 +$212M +1.5M Q1 2026
Wasatch Advisors LP · New +$174M
Change +1.2M Date Q1 2026
Wasatch Advisors LP New· Q1 2026 +$174M +1.2M Q1 2026
Vestal Point Capital, LP · Added +$118M
Change +842K Date Q1 2026
Vestal Point Capital, LP Added· Q1 2026 +$118M +842K Q1 2026
T. Rowe Price Investment Management, Inc. · Added +$101M
Change +721K Date Q1 2026
T. Rowe Price Investment Management, Inc. Added· Q1 2026 +$101M +721K Q1 2026
Millennium Management LLC · Reduced −$88M
Change −628K Date Q1 2026
Millennium Management LLC Reduced· Q1 2026 −$88M −628K Q1 2026
BlackRock · Reduced −$87M
Change −626K Date Q1 2026
BlackRock Reduced· Q1 2026 −$87M −626K Q1 2026
Marshall Wace, LLP · Exited −$72M
Change −516K Δ Own −100.0% Date Q1 2026
Marshall Wace, LLP Exited· Q1 2026 −$72M −516K −100.0% Q1 2026
Fred Alger Management, LLC · Reduced −$67M
Change −477K Date Q1 2026
Fred Alger Management, LLC Reduced· Q1 2026 −$67M −477K Q1 2026
Norges · Exited −$65M
Change −462K Δ Own −100.0% Date Q1 2026
Norges Exited· Q1 2026 −$65M −462K −100.0% Q1 2026
Point72 Asset Management, L.P. · Reduced −$61M
Change −437K Δ Own −43.4% Date Q1 2026
Point72 Asset Management, L.P. Reduced· Q1 2026 −$61M −437K −43.4% Q1 2026
Ameriprise Financial Inc · Added +$60M
Change +431K Date Q1 2026
Ameriprise Financial Inc Added· Q1 2026 +$60M +431K Q1 2026
Walleye Capital LLC · Exited −$58M
Change −417K Δ Own −100.0% Date Q1 2026
Walleye Capital LLC Exited· Q1 2026 −$58M −417K −100.0% Q1 2026
Goldman Sachs Group Inc · Added +$50M
Change +356K Date Q1 2026
Goldman Sachs Group Inc Added· Q1 2026 +$50M +356K Q1 2026
First Trust Advisors LP · Added +$49M
Change +347K Date Q1 2026
First Trust Advisors LP Added· Q1 2026 +$49M +347K Q1 2026
UBS Group AG · Added +$45M
Change +322K Date Q1 2026
UBS Group AG Added· Q1 2026 +$45M +322K Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 445

Famous investor activity in Repligen Corporation (RGEN)

Repligen Corporation (RGEN) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Garland Jason K. · Officer Sell −$80K
Price $150.00 Qty −530 Owned 19K ΔOwn −2.7% Trade date Jul 16, 2026 Filed date Jul 17, 2026
Garland Jason K. Officer Sell $150.00 −530 −$80K 19K −2.7% Jul 16, 2026 Jul 17, 2026
Garland Jason K. · Officer Sell −$106K
Price $145.00 Qty −733 Owned 19K ΔOwn −3.6% Trade date Jun 25, 2026 Filed date Jun 26, 2026
Garland Jason K. Officer Sell $145.00 −733 −$106K 19K −3.6% Jun 25, 2026 Jun 26, 2026
Madaus Martin D. · Director 2 operations 3K
Owned 2K Trade date May 14, 2026 Filed date May 18, 2026
Madaus Martin D. Director 2 operations 3K 2K May 14, 2026 May 18, 2026
Konstantinov Konstantin · Director 2 operations 3K
Owned 2K Trade date May 14, 2026 Filed date May 18, 2026
Konstantinov Konstantin Director 2 operations 3K 2K May 14, 2026 May 18, 2026
Mhatre Rohin · Director 2 operations 3K
Owned 2K Trade date May 14, 2026 Filed date May 18, 2026
Mhatre Rohin Director 2 operations 3K 2K May 14, 2026 May 18, 2026
Eglinton Manner Carrie · Director 2 operations 3K
Owned 2K Trade date May 14, 2026 Filed date May 18, 2026
Eglinton Manner Carrie Director 2 operations 3K 2K May 14, 2026 May 18, 2026
Pax Margaret · Director 2 operations 3K
Owned 2K Trade date May 14, 2026 Filed date May 18, 2026
Pax Margaret Director 2 operations 3K 2K May 14, 2026 May 18, 2026
Dawes Karen A. · Director 2 operations 3K
Owned 2K Trade date May 14, 2026 Filed date May 18, 2026
Dawes Karen A. Director 2 operations 3K 2K May 14, 2026 May 18, 2026
Muir Glenn P. · Director 2 operations 3K
Owned 2K Trade date May 14, 2026 Filed date May 18, 2026
Muir Glenn P. Director 2 operations 3K 2K May 14, 2026 May 18, 2026
Barthelemy Nicolas · Director 2 operations 3K
Owned 2K Trade date May 14, 2026 Filed date May 18, 2026
Barthelemy Nicolas Director 2 operations 3K 2K May 14, 2026 May 18, 2026
Muir Glenn P. · Director 2 operations 5K
Price $38.76 Owned 2K Trade date May 7, 2026 Filed date May 8, 2026
Muir Glenn P. Director 2 operations $38.76 5K 2K May 7, 2026 May 8, 2026
Douglass Brian Robb · Officer Tax withholding or exercise payment (F) -$42K
Price $126.43 Qty -334 Owned 8K Trade date May 7, 2026 Filed date May 8, 2026
Douglass Brian Robb Officer Tax withholding or exercise payment (F) $126.43 -334 -$42K 8K May 7, 2026 May 8, 2026
Loeillot Olivier · Director Sell −$536K
Price $140.00 Qty −4K Owned 54K Trade date Apr 21, 2026 Filed date Apr 22, 2026
Loeillot Olivier Director Sell $140.00 −4K −$536K 54K Apr 21, 2026 Apr 22, 2026
Kuriyel Ralf · Officer 2 operations 11K
Owned 6K Trade date Mar 5, 2026 Filed date Mar 23, 2026
Kuriyel Ralf Officer 2 operations 11K 6K Mar 5, 2026 Mar 23, 2026
Loeillot Olivier · Officer 2 operations 50K
Owned 26K Trade date Mar 5, 2026 Filed date Mar 23, 2026
Loeillot Olivier Officer 2 operations 50K 26K Mar 5, 2026 Mar 23, 2026
15 of 48
15 of 48 Sign in to continue to older insider transactions.

Repligen Corporation (RGEN) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
BlackRock Inc. 7.9M
% of shares outstanding 14.1% Filing date Jan 23, 2024
BlackRock Inc. 7.9M 14.1% Jan 23, 2024
Blackrock, Inc. 7.1M
% of shares outstanding 12.7% Filing date Nov 12, 2024
Blackrock, Inc. 7.1M 12.7% Nov 12, 2024
T. Rowe Price Associates 6.4M
% of shares outstanding 11.4% Filing date Nov 14, 2024
T. Rowe Price Associates 6.4M 11.4% Nov 14, 2024
Vanguard Group Inc 5.1M
% of shares outstanding 9.1% Filing date Feb 13, 2024
Vanguard Group Inc 5.1M 9.1% Feb 13, 2024
Eddleman Roy T 2.7M
% of shares outstanding 4.8% Filing date Feb 6, 2024
Eddleman Roy T 2.7M 4.8% Feb 6, 2024
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Repligen Corporation (RGEN) ownership FAQ

Who owns RGEN?

445 reporting institutions disclosed RGEN position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.