• $577.1M
    Market Cap
  • 30.87%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
BLACKROCK, INC.
20.18%
6.6M
+5.8M (+87.84%)
Jun 30, 2026
BALYASNY ASSET MANAGEMENT L.P.
11.13%
3.6M
+3.6M (+100.00%)
Jun 30, 2026
WOODLINE PARTNERS LP
9.21%
3.0M
+2.0M (+66.64%)
Jun 30, 2026
SILVERARC CAPITAL MANAGEMENT, LLC
8.99%
2.9M
+2.9M (+100.00%)
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
7.88%
2.6M
+1.5M (+57.18%)
Jun 30, 2026
BVF INC/IL
7.67%
2.5M
+2.5M (+100.00%)
Jun 30, 2026
CALIGAN PARTNERS LP
7.67%
2.5M
+2.5M (+100.00%)
Jun 30, 2026

Current Ownership Distribution

  • Institutions137.1M (65.96%)
  • Mutual Funds62.6M (30.14%)
  • Insiders8.1M (3.90%)
  • Other0 (0.00%)

Insider Transactions

  • 3.90% (8.1M)
    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)
  • $13.2M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Kemble George
Exempt
Aug 11, 2026
$0.00
9,751
$0.00
358,073
Kemble George
Exempt
Aug 11, 2026
$0.00
10,455
$0.00
35,977
Kemble George
Exempt
Aug 11, 2026
$62,016.36
9,751
$6.36
71,912
Kemble George
Exempt
Aug 11, 2026
$66,493.80
10,455
$6.36
82,367
Kemble George
Sell
Aug 11, 2026
$201,146.69
20,206
$9.95
62,161
Kemble George
Sell
Jul 20, 2026
$140,529.13
18,844
$7.46
62,161
Happel David
President & CEO
Sell
Jul 20, 2026
$497,067.79
64,051
$7.76
741,570
Rozek Elizabeth
Chief Legal & Admin. Officer
Sell
Jul 20, 2026
$81,832.36
10,545
$7.76
224,414
Phillips Anne M.
Award
Jun 12, 2026
$0.00
39,567
$0.00
39,567
Hoelscher Paul W.
Award
Jun 12, 2026
$0.00
39,567
$0.00
39,567
GRAMMER ELIZABETH A
Award
Jun 12, 2026
$0.00
39,567
$0.00
39,567
Jarrett Jennifer
Award
Jun 12, 2026
$0.00
39,567
$0.00
39,567
SEIDENBERG BETH C
Award
Jun 12, 2026
$0.00
39,567
$0.00
39,567
Kemble George
Award
Jun 12, 2026
$0.00
39,567
$0.00
39,567
Chauche Thierry
Chief Financial Officer
Award
Feb 19, 2026
$0.00
88,000
$0.00
88,000
Rozek Elizabeth
Chief Legal & Admin. Officer
Award
Feb 19, 2026
$0.00
88,000
$0.00
88,000
Chauche Thierry
Chief Financial Officer
Award
Feb 19, 2026
$0.00
44,000
$0.00
59,688
Rozek Elizabeth
Chief Legal & Admin. Officer
Award
Feb 19, 2026
$0.00
44,000
$0.00
234,959
Rozek Elizabeth
Chief Legal & Admin. Officer
Sell
Feb 10, 2026
$14,054.44
2,622
$5.36
190,959
Chauche Thierry
Chief Financial Officer
Sell
Feb 10, 2026
$7,032.71
1,312
$5.36
15,688
Martins Eduardo Bruno
Chief Medical Officer
Sell
Feb 10, 2026
$19,511.13
3,640
$5.36
103,296
Happel David
President & CEO
Sell
Feb 10, 2026
$64,864.99
12,101
$5.36
677,621
Kemble George
Executive Chairman
Sell
Nov 20, 2025
$289,979.01
37,688
$7.69
81,005
Happel David
President & CEO
Sell
Jul 21, 2025
$598,115.34
65,478
$9.13
689,722
Rozek Elizabeth
General Counsel and CCO
Sell
Jul 21, 2025
$98,470.99
10,780
$9.13
183,726
Martins Eduardo Bruno
Chief Medical Officer
Sell
Jul 21, 2025
$75,607.08
8,277
$9.13
106,936
GRAMMER ELIZABETH A
Award
Jun 09, 2025
$0.00
32,250
$0.00
32,250
Jarrett Jennifer
Award
Jun 09, 2025
$0.00
27,268
$0.00
27,268
Phillips Anne M.
Award
Jun 09, 2025
$0.00
27,268
$0.00
27,268
Hoelscher Paul W.
Award
Jun 09, 2025
$0.00
32,250
$0.00
32,250