• $1.6B
    Market Cap
  • 3.64%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
15.32%
11.3M
+631,070 (+5.58%)
Mar 31, 2026
BLACKROCK INC.
13.05%
9.6M
-512,781 (-5.33%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
12.90%
9.5M
+99,401 (+1.04%)
Dec 31, 2024
BLACKROCK FUND ADVISORS
11.33%
8.4M
+4.1M (+49.16%)
Dec 31, 2016
VANGUARD GROUP INC
10.73%
7.9M
+819,757 (+10.35%)
Dec 31, 2025
PUTNAM INVESTMENTS LLC
8.50%
6.3M
+8,955 (+0.14%)
Dec 31, 2023
DIMENSIONAL FUND ADVISORS LP
6.01%
4.4M
+76,026 (+1.71%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions1.3B (75.36%)
  • Mutual Funds429.2M (24.16%)
  • Insiders8.5M (0.48%)
  • Other0 (0.00%)

Insider Transactions

  • 0.48% (8.5M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 0
    Number of InsiderSelling (last 12 months)
  • $0.00
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Raifeld Pavel
Chief Executive Officer
In Kind
May 20, 2026
$25,131.20
1,130
$22.24
285,929
Zhen Marianne
Chief Accounting Officer
In Kind
May 20, 2026
$25,064.48
1,127
$22.24
57,516
Basso Stephen
Chief Financial Officer
In Kind
May 20, 2026
$12,432.16
559
$22.24
88,571
Raifeld Pavel
Chief Executive Officer
Award
May 15, 2026
$0.00
1,123
$0.00
287,059
Basso Stephen
Chief Financial Officer
Award
May 15, 2026
$0.00
1,123
$0.00
89,130
Basso Stephen
Chief Financial Officer
Award
May 04, 2026
$0.00
93,750
$0.00
93,750
Small Derek A
Award
May 04, 2026
$0.00
10,000
$0.00
10,000
Raifeld Pavel
Chief Executive Officer
Award
May 04, 2026
$0.00
312,500
$0.00
312,500
DiPaolo Mark
Award
May 04, 2026
$0.00
10,000
$0.00
10,000
Basso Stephen
Chief Financial Officer
Award
May 04, 2026
$0.00
37,994
$0.00
88,007
Haimovitz Jules
Award
May 04, 2026
$0.00
10,000
$0.00
10,000
Raifeld Pavel
Chief Executive Officer
Award
May 04, 2026
$0.00
126,646
$0.00
285,936
Schlesinger Sarah J.
Award
May 04, 2026
$0.00
10,000
$0.00
10,000
Small Derek A
Award
May 04, 2026
$0.00
9,786
$0.00
45,035
DiPaolo Mark
Award
May 04, 2026
$0.00
9,786
$0.00
140,492
Haimovitz Jules
Award
May 04, 2026
$0.00
9,786
$0.00
152,692
Schlesinger Sarah J.
Award
May 04, 2026
$0.00
9,786
$0.00
140,492
Zhen Marianne
Chief Accounting Officer
Award
May 04, 2026
$0.00
31,500
$0.00
31,500
Zhen Marianne
Chief Accounting Officer
Award
May 04, 2026
$0.00
12,766
$0.00
58,643
Basso Stephen
Chief Financial Officer
In Kind
Feb 20, 2026
$29,097.16
1,244
$23.39
50,013
Zhen Marianne
Chief Accounting Officer
In Kind
Feb 20, 2026
$57,539.40
2,460
$23.39
45,877
Raifeld Pavel
Chief Executive Officer
In Kind
Feb 20, 2026
$69,842.54
2,986
$23.39
159,290
Basso Stephen
Chief Financial Officer
In Kind
Nov 20, 2025
$5,014.92
237
$21.16
51,257
Basso Stephen
Chief Financial Officer
Award
Nov 15, 2025
$0.00
604
$0.00
51,494
Basso Stephen
Chief Financial Officer
Award
Nov 03, 2025
$499,998.99
27,609
$18.11
50,890
Zhen Marianne
Chief Accounting Officer
In Kind
Aug 20, 2025
$19,770.45
991
$19.95
49,329
Basso Stephen
Chief Financial Officer
In Kind
Aug 20, 2025
$4,728.15
237
$19.95
23,281
Basso Stephen
Chief Financial Officer
In Kind
May 20, 2025
$4,450.86
237
$18.78
23,518
Zhen Marianne
Chief Accounting Officer
In Kind
May 20, 2025
$18,629.76
992
$18.78
50,320
Schlesinger Sarah J.
Award
May 19, 2025
$0.00
10,000
$0.00
10,000