RGEN
Repligen (RGEN)
NASDAQ
$174.64-$5.37 (-2.98%)
Price as of Oct 22, 2026 6:07 PM EDT
  • $11.4B
    Market Cap
  • 14.36%
    1-Year Change
  • Medical Instruments & Supplies
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK INC.
11.92%
7.6M
-204,674 (-2.70%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
10.80%
6.9M
-250,297 (-3.65%)
Dec 31, 2024
BLACKROCK, INC.
8.48%
5.4M
-608,116 (-11.29%)
Jun 30, 2026
VANGUARD GROUP INC
7.87%
5.0M
-50,246 (-1.01%)
Dec 31, 2025
FMR LLC
5.24%
3.3M
+439,904 (+13.22%)
Jun 30, 2026
BLACKROCK FUND ADVISORS
4.85%
3.1M
+336,000 (+10.92%)
Dec 31, 2016
UNITED CAPITAL FINANCIAL ADVISERS, LLC
4.40%
2.8M
+16,670 (+0.60%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions1.1B (58.13%)
  • Mutual Funds775.7M (41.59%)
  • Insiders5.2M (0.28%)
  • Other0 (0.00%)

Insider Transactions

  • 0.28% (5.2M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 5
    Number of InsiderSelling (last 12 months)
  • $261.1M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Douglass Brian Robb
CHIEF PRODUCT OFFICER
Award
Oct 06, 2026
$0.00
675
$0.00
675
Douglass Brian Robb
CHIEF PRODUCT OFFICER
Award
Oct 06, 2026
$0.00
700
$0.00
8,685
Loeillot Olivier
Chief Executive Officer
Exempt
Oct 05, 2026
$0.00
4,202
$0.00
8,405
Loeillot Olivier
Chief Executive Officer
Sell
Oct 05, 2026
$238,273.75
1,333
$178.75
45,788
Loeillot Olivier
Chief Executive Officer
Exempt
Oct 05, 2026
$651,141.92
4,202
$154.96
49,990
Loeillot Olivier
Chief Executive Officer
Sell
Oct 05, 2026
$798,380.00
4,202
$190.00
45,788
Loeillot Olivier
Chief Executive Officer
In Kind
Oct 02, 2026
$226,761.60
1,248
$181.70
47,121
Garland Jason K
CFO
In Kind
Sep 25, 2026
$79,855.28
421
$189.68
18,408
Loeillot Olivier
Chief Executive Officer
Exempt
Sep 24, 2026
$0.00
8,404
$0.00
12,607
Loeillot Olivier
Chief Executive Officer
Exempt
Sep 24, 2026
$0.00
4,542
$0.00
9,085
Loeillot Olivier
Chief Executive Officer
Exempt
Sep 24, 2026
$1.3M
8,404
$154.96
56,773
Loeillot Olivier
Chief Executive Officer
Sell
Sep 24, 2026
$1.6M
8,404
$190.00
48,369
Loeillot Olivier
Chief Executive Officer
Exempt
Sep 24, 2026
$705,735.96
4,542
$155.38
52,911
Loeillot Olivier
Chief Executive Officer
Sell
Sep 24, 2026
$862,980.00
4,542
$190.00
48,369
Loeillot Olivier
Chief Executive Officer
Exempt
Sep 21, 2026
$0.00
5,426
$0.00
5,426
Loeillot Olivier
Chief Executive Officer
Exempt
Sep 21, 2026
$769,352.54
5,426
$141.79
53,795
Loeillot Olivier
Chief Executive Officer
Sell
Sep 21, 2026
$976,680.00
5,426
$180.00
48,369
Loeillot Olivier
Chief Executive Officer
Sell
Sep 04, 2026
$503,506.50
3,035
$165.90
48,369
Loeillot Olivier
Chief Executive Officer
In Kind
Sep 03, 2026
$482,031.62
2,842
$169.61
51,404
Hughes Violetta
CHIEF ACCOUNTING OFFICER
In Kind
Sep 01, 2026
$47,095.54
277
$170.02
6,331
Loeillot Olivier
Chief Executive Officer
Exempt
Aug 20, 2026
$0.00
5,426
$0.00
10,852
Loeillot Olivier
Chief Executive Officer
Exempt
Aug 20, 2026
$769,352.54
5,426
$141.79
59,672
Loeillot Olivier
Chief Executive Officer
Sell
Aug 20, 2026
$976,680.00
5,426
$180.00
54,246
Garland Jason K
CFO
Sell
Jul 16, 2026
$79,500.00
530
$150.00
18,829
Garland Jason K
CFO
Sell
Jun 25, 2026
$106,285.00
733
$145.00
19,359
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
8,315
$0.00
8,315
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
KURIYEL RALF
Senior VP, R&D
Award
Mar 05, 2026
$0.00
5,284
$0.00
20,062