Repligen Ownership | Who Owns Repligen?

Overview Forecast RevenueFinancials Chart Transcripts

Repligen Ownership Summary

Repligen is owned by 63.56% institutional investors, 5.23% insiders, and 31.20% retail investors. Blackrock is the largest institutional shareholder, holding 13.54% of RGEN shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.20% of its assets in Repligen shares.

RGEN Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Repligen	63.56%	5.23%	31.20%
Sector	Healthcare Stocks	35.64%	12.08%	52.28%
Industry	Medical Instruments & Supplies Stocks	37.52%	14.13%	48.35%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	7.57M	13.54%	$954.08M
Blackrock funding, inc. /de	5.99M	10.66%	$706.10M
Vanguard group	4.99M	8.88%	$818.31M
Price t rowe associates inc /md/	4.88M	8.67%	$574.74M
Fmr	2.89M	5.13%	$340.12M
United capital financial advisers	2.77M	4.93%	$326.83M
State street	1.78M	3.16%	$209.40M
Wasatch advisors lp	1.59M	2.82%	$216.97M
Bank of new york mellon	1.53M	2.72%	$180.43M
Maverick capital	1.52M	2.70%	$178.95M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Iron triangle partners lp	270.00K	5.13%	$36.09M
12 west capital management lp	191.23K	3.80%	$22.53M
Vestal point capital, lp	925.00K	3.05%	$108.98M
Roubaix capital	54.55K	3.00%	$6.43M
Brown capital management	170.00K	2.85%	$20.03M
Conestoga capital advisors	1.10M	2.58%	$129.34M
Blue whale capital llp	404.20K	2.26%	$47.62M
American capital management	357.72K	2.26%	$42.15M
Avidity partners management lp	77.80K	2.08%	$9.20M
Maverick capital	1.52M	2.06%	$178.95M

Top Buyers

Holder	Shares	% Assets	Change
Maverick capital	1.52M	2.06%	1.52M
Vestal point capital, lp	925.00K	3.05%	842.00K
T. rowe price investment management	1.37M	0.11%	720.56K
Norges bank	462.09K	0.01%	462.09K
Ameriprise financial	925.21K	0.03%	430.99K

Top Sellers

Holder	Shares	% Assets	Change
Sands capital management	-	-	-1.25M
William blair investment management	-	-	-634.99K
Millennium management	22.46K	0.00%	-628.09K
Blackrock funding, inc. /de	5.99M	0.01%	-626.22K
Marshall wace, llp	-	-	-516.34K

New Positions

Holder	Shares	% Assets	Change	Value
Maverick capital	1.52M	2.06%	1.52M	$178.95M
Norges bank	462.09K	0.01%	462.09K	$75.72M
Pointstate capital lp	409.50K	0.82%	409.50K	$54.74M
Vanguard fiduciary trust	330.77K	0.01%	330.77K	$38.97M
Iron triangle partners lp	270.00K	5.13%	270.00K	$36.09M

Sold Out

Holder	Change
Financial management professionals	-1.00
True wealth design	-1.00
Financial gravity asset management	-1.00
Claris advisors, llc / mo /	-1.00
Tfc financial management	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	336	-30.86%	35,744,636	-42.77%	63	0.51%	166	-32.79%	97	-33.10%
Dec 31, 2025	370	-21.94%	40,110,060	-33.38%	71	0.62%	187	-20.09%	105	-30.92%
Sep 30, 2025	456	2.01%	59,758,880	6.45%	106	1.07%	225	12.50%	147	-11.98%
Jun 30, 2025	445	-2.20%	58,196,365	1.11%	103	0.98%	198	-13.54%	167	27.48%
Mar 31, 2025	19	-95.77%	3,210,158	-94.33%	5	0.06%	5	-97.49%	12	-92.41%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Mid-Cap ETF	1.80M	3.20%	-9.95K
Vanguard Total Stock Mkt Idx Inv	1.70M	3.02%	-4.29K
Vanguard US Total Market Shares ETF	1.68M	2.99%	1.32K
US Small-Cap Growth II Equity Comp	1.26M	2.23%	319.34K
Vanguard Small Cap Index	1.23M	2.18%	-2.63K
Sands Capital Global Growth Equity	1.14M	2.02%	-41.08K
MFS Mid Cap Growth Equity	862.37K	1.53%	39.40K
MFS Mid Cap Growth A	862.37K	1.53%	-
T. Rowe Price New Horizons	854.73K	1.52%	-376.90K
Delaware Ivy Mid Cap Growth A	805.66K	1.44%	-

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jul 16, 2026	Garland Jason K	CFO	Sell	$79.50K
Jun 25, 2026	Garland Jason K	CFO	Sell	$106.28K
Apr 21, 2026	Loeillot Olivier	Chief Executive Officer	Sell	$536.48K
Dec 17, 2025	DAWES KAREN A	-	Sell	$44.27K
Nov 25, 2025	Loeillot Olivier	Chief Executive Officer	Sell	$1.20M

Insider Transactions Trends

Date	Buy	Sell
2026 Q3	-	1
2026 Q2	-	2
2026 Q1	-	-
2025 Q4	-	15
2025 Q3	1	6

RGEN Ownership FAQ

Who Owns Repligen?

Repligen shareholders are primarily institutional investors at 63.56%, followed by 5.23% insiders and 31.21% retail investors. The average institutional ownership in Repligen's industry, Medical Instruments & Supplies Stocks, is 37.52%, which Repligen exceeds.

Who owns the most shares of Repligen?

Repligen’s largest shareholders are Blackrock (7.57M shares, 13.54%), Blackrock funding, inc. /de (5.99M shares, 10.66%), and Vanguard group (4.99M shares, 8.88%). Together, they hold 33.09% of Repligen’s total shares outstanding.

Does Blackrock own Repligen?

Yes, BlackRock owns 13.54% of Repligen, totaling 7.57M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 954.08M$. In the last quarter, BlackRock decreased its holdings by -205K shares, a -2.63% change.

Who is Repligen’s biggest shareholder by percentage of total assets invested?

Iron triangle partners lp is Repligen’s biggest shareholder by percentage of total assets invested, with 5.13% of its assets in 270K Repligen shares, valued at 36.09M$.

Who is the top mutual fund holder of Repligen shares?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of Repligen shares, with 3.20% of its total shares outstanding invested in 1.8M Repligen shares.

Try Tickergate Pro Free

Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)

Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis

Discover trending investment themes
Find your next best investment
Research stocks using tools