RGEN
Repligen (RGEN)
NASDAQ
$126.37-$0.20 (-0.16%)
Price as of Jun 23, 2026 4:13 PM EDT
  • $7.1B
    Market Cap
  • 5.38%
    1-Year Change
  • Medical Instruments & Supplies
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK INC.
13.42%
7.6M
-204,674 (-2.70%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
12.16%
6.9M
-250,297 (-3.65%)
Dec 31, 2024
BLACKROCK, INC.
10.62%
6.0M
-626,217 (-10.45%)
Mar 31, 2026
VANGUARD GROUP INC
8.85%
5.0M
-50,246 (-1.01%)
Dec 31, 2025
PRICE T ROWE ASSOCIATES INC /MD/
8.65%
4.9M
+279,080 (+5.72%)
Mar 31, 2026
BLACKROCK FUND ADVISORS
5.45%
3.1M
+336,000 (+10.92%)
Dec 31, 2016
FMR LLC
5.12%
2.9M
+18,940 (+0.66%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions1.0B (59.31%)
  • Mutual Funds690.0M (40.38%)
  • Insiders5.2M (0.31%)
  • Other0 (0.00%)

Insider Transactions

  • 0.31% (5.2M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 4
    Number of InsiderSelling (last 12 months)
  • $279.7M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Garland Jason K
CFO
Award
Mar 05, 2026
$0.00
8,315
$0.00
8,315
Loeillot Olivier
Chief Executive Officer
Award
Mar 05, 2026
$0.00
25,890
$0.00
25,890
Bylund James
Chief Operating Officer
Award
Mar 05, 2026
$0.00
8,315
$0.00
8,315
Loeillot Olivier
Chief Executive Officer
Award
Mar 05, 2026
$0.00
24,134
$0.00
58,078
KURIYEL RALF
Senior VP, R&D
Award
Mar 05, 2026
$0.00
5,669
$0.00
5,669
Bylund James
Chief Operating Officer
Award
Mar 05, 2026
$0.00
7,751
$0.00
25,423
Garland Jason K
CFO
Award
Mar 05, 2026
$0.00
7,751
$0.00
20,092
KURIYEL RALF
Senior VP, R&D
Award
Mar 05, 2026
$0.00
5,284
$0.00
20,062
Bylund James
Chief Operating Officer
Award
Mar 04, 2026
$0.00
125
$0.00
17,734
KURIYEL RALF
Senior VP, R&D
Award
Mar 04, 2026
$0.00
125
$0.00
14,820
Bylund James
Chief Operating Officer
In Kind
Mar 04, 2026
$7,802.08
62
$125.84
17,672
KURIYEL RALF
Senior VP, R&D
In Kind
Mar 04, 2026
$5,285.28
42
$125.84
14,778
Bylund James
Chief Operating Officer
In Kind
Mar 02, 2026
$304,052.01
2,433
$124.97
17,609
Hunt Anthony
In Kind
Mar 02, 2026
$1.2M
9,897
$124.97
89,062
Bylund James
Chief Operating Officer
In Kind
Feb 27, 2026
$190,262.94
1,478
$128.73
20,042
DAWES KAREN A
Sell
Dec 17, 2025
$44,275.00
275
$161.00
91,821
MUIR GLENN P
Exempt
Dec 16, 2025
$0.00
3,366
$0.00
3,366
MUIR GLENN P
Exempt
Dec 16, 2025
$87,919.92
3,366
$26.12
36,622
Loeillot Olivier
Chief Executive Officer
Sell
Nov 25, 2025
$1.2M
7,041
$170.00
35,898
Bylund James
Chief Operating Officer
Sell
Nov 18, 2025
$331,301.11
2,191
$151.21
21,520
Hunt Anthony
Exempt
Nov 13, 2025
$0.00
2,952
$0.00
14,760
Hunt Anthony
Sell
Nov 13, 2025
$269,401.84
1,784
$151.01
98,959
Hunt Anthony
Sell
Nov 13, 2025
$319,557.00
2,100
$152.17
96,859
Hunt Anthony
Sell
Nov 13, 2025
$447,628.22
2,923
$153.14
93,936
Hunt Anthony
Sell
Nov 13, 2025
$385,800.00
2,500
$154.32
91,436
Hunt Anthony
Sell
Nov 13, 2025
$466,350.00
3,000
$155.45
88,436
Hunt Anthony
Sell
Nov 13, 2025
$896,234.14
5,737
$156.22
82,699
Hunt Anthony
Sell
Nov 13, 2025
$307,307.16
1,956
$157.11
80,743
Hunt Anthony
Exempt
Nov 13, 2025
$99,984.24
2,952
$33.87
83,695
Hunt Anthony
Exempt
Nov 12, 2025
$0.00
25,000
$0.00
157,344