• $460.0M
    Market Cap
  • 145.56%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
JANUS HENDERSON GROUP PLC
19.67%
1.3M
0 (0.00%)
Mar 31, 2026
RA CAPITAL MANAGEMENT, L.P.
9.96%
667,207
0 (0.00%)
Mar 31, 2026
SATURN V CAPITAL MANAGEMENT LLC
5.16%
345,626
+19,925 (+5.76%)
Mar 31, 2026
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)
4.83%
323,745
+153,187 (+47.32%)
Mar 31, 2026
BLACKROCK, INC.
4.73%
316,567
+61,710 (+19.49%)
Mar 31, 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.
4.62%
309,195
-330,272 (-106.82%)
Mar 31, 2026
VANGUARD GROUP INC
4.39%
293,816
+85,598 (+29.13%)
Dec 31, 2025

Current Ownership Distribution

  • Institutions24.6M (89.63%)
  • Mutual Funds1.4M (5.23%)
  • Insiders1.4M (5.13%)
  • Other0 (0.00%)

Insider Transactions

  • 5.13% (1.4M)
    Current InsiderOwnership (%, shares)
  • 1
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 5
    Number of InsiderSelling (last 12 months)
  • $21.4M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Cittadine Andrew
Chief Operating Officer
Exempt
Mar 31, 2026
$0.00
3,514
$0.00
44,753
Robinson Chandler
Chief Executive Officer
Exempt
Mar 31, 2026
$0.00
6,732
$0.00
106,276
Cittadine Andrew
Chief Operating Officer
Exempt
Mar 31, 2026
$0.00
3,514
$0.00
54,240
Robinson Chandler
Chief Executive Officer
Exempt
Mar 31, 2026
$0.00
6,732
$0.00
92,450
Cittadine Andrew
Chief Operating Officer
In Kind
Mar 31, 2026
$86,075.09
1,571
$54.79
52,669
Robinson Chandler
Chief Executive Officer
In Kind
Mar 31, 2026
$108,045.88
1,972
$54.79
90,478
Rodriguez Susan
CCSO
Award
Mar 02, 2026
$0.00
48,728
$0.00
48,728
RIOUX PATRICE
Award
Jan 01, 2026
$0.00
2,000
$0.00
2,000
Robinson Chandler
Chief Executive Officer
Exempt
Dec 31, 2025
$0.00
8,724
$0.00
113,008
Robinson Chandler
Chief Executive Officer
Exempt
Dec 31, 2025
$0.00
8,724
$0.00
88,276
Robinson Chandler
Chief Executive Officer
In Kind
Dec 31, 2025
$167,037.40
2,558
$65.30
85,718
Vu Quan Anh
Chief Financial Officer
Buy
Dec 26, 2025
$104,925.00
1,500
$69.95
1,500
KLAUSNER ARTHUR J
Sell
Dec 18, 2025
$312,499.60
4,660
$67.06
9,223
KLAUSNER ARTHUR J
Sell
Dec 18, 2025
$31,389.49
461
$68.09
8,762
Robinson Chandler
Chief Executive Officer
Exempt
Sep 30, 2025
$0.00
8,726
$0.00
72,599
Cittadine Andrew
Chief Operating Officer
Exempt
Sep 30, 2025
$0.00
4,327
$0.00
38,674
Robinson Chandler
Chief Executive Officer
Exempt
Sep 30, 2025
$0.00
8,726
$0.00
82,198
Cittadine Andrew
Chief Operating Officer
Exempt
Sep 30, 2025
$0.00
4,327
$0.00
50,185
Robinson Chandler
Chief Executive Officer
In Kind
Sep 30, 2025
$216,098.82
2,646
$81.67
79,552
Cittadine Andrew
Chief Operating Officer
In Kind
Sep 30, 2025
$154,846.32
1,896
$81.67
48,289
Tactic Pharma LLC
Sell
Sep 24, 2025
$35.0M
550,229
$63.61
272,026
Tsuchimoto Kim R
In The Money
Jul 14, 2025
$0.00
4,200
$0.00
0
STARR CHRISTOPHER M
In The Money
Jul 14, 2025
$0.00
16,800
$0.00
0
Robinson Chandler
Chief Executive Officer
In The Money
Jul 14, 2025
$0.00
16,800
$0.00
0
STARR CHRISTOPHER M
In The Money
Jul 14, 2025
$84.00
16,800
$0.01
21,973
Tsuchimoto Kim R
In The Money
Jul 14, 2025
$0.00
4,704
$0.00
0
STARR CHRISTOPHER M
Sell
Jul 14, 2025
$672,020.16
16,800
$40.00
5,173
Robinson Chandler
Chief Executive Officer
In The Money
Jul 14, 2025
$84.00
16,800
$0.01
90,272
Tsuchimoto Kim R
In The Money
Jul 14, 2025
$44.52
8,904
$0.01
20,390
Robinson Chandler
Chief Executive Officer
Sell
Jul 14, 2025
$672,020.16
16,800
$40.00
73,472