• $1.7B
    Market Cap
  • 13.88%
    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 (75.33%)
  • Mutual Funds429.9M (24.18%)
  • 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
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
Haimovitz Jules
Award
May 19, 2025
$0.00
10,000
$0.00
10,000
DiPaolo Mark
Award
May 19, 2025
$0.00
10,000
$0.00
10,000
Haimovitz Jules
Award
May 19, 2025
$0.00
12,077
$0.00
142,906
Schlesinger Sarah J.
Award
May 19, 2025
$0.00
12,077
$0.00
130,706
DiPaolo Mark
Award
May 19, 2025
$0.00
12,077
$0.00
130,706
Basso Stephen
Chief Financial Officer
Award
May 15, 2025
$0.00
1,353
$0.00
23,755
Raifeld Pavel
Award
Mar 14, 2025
$0.00
243,750
$0.00
1.1M
Raifeld Pavel
Award
Mar 14, 2025
$649,986.03
37,377
$17.39
49,980
DENNER ALEXANDER J
Sell
Mar 06, 2025
$21.0M
1.2M
$17.52
5.7M
DENNER ALEXANDER J
Sell
Mar 05, 2025
$4.8M
270,374
$17.63
6.9M
DENNER ALEXANDER J
Sell
Mar 04, 2025
$2.7M
151,175
$17.63
7.1M
Basso Stephen
Chief Financial Officer
Award
Feb 24, 2025
$0.00
100,831
$0.00
276,730
Zhen Marianne
Chief Accounting Officer
Award
Feb 24, 2025
$0.00
30,300
$0.00
93,322
Basso Stephen
Chief Financial Officer
Award
Feb 24, 2025
$191,087.52
10,569
$18.08
22,402
Zhen Marianne
Chief Accounting Officer
Award
Feb 24, 2025
$161,599.04
8,938
$18.08
51,312
Basso Stephen
Chief Financial Officer
In Kind
Feb 20, 2025
$19,985.42
1,106
$18.07
11,833
Zhen Marianne
Chief Accounting Officer
In Kind
Feb 20, 2025
$46,349.55
2,565
$18.07
42,374
Zhen Marianne
Chief Accounting Officer
In Kind
Nov 20, 2024
$18,690.40
976
$19.15
44,939
Basso Stephen
Chief Financial Officer
Award
Nov 15, 2024
$0.00
843
$0.00
12,939