IRON
DISC MEDICINE (IRON)
NASDAQ
$79.78-$0.03 (-0.04%)
Price as of Aug 21, 2026 7:30 PM EDT
  • $3.1B
    Market Cap
  • 32.25%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
FMR LLC
12.75%
4.9M
-692,421 (-14.15%)
Jun 30, 2026
BLACKROCK, INC.
6.43%
2.5M
+194,068 (+7.86%)
Jun 30, 2026
RA CAPITAL MANAGEMENT, L.P.
6.38%
2.5M
0 (0.00%)
Jun 30, 2026
NOVO HOLDINGS A/S
6.10%
2.3M
+2.3M (+100.00%)
Dec 31, 2022
JPMORGAN CHASE & CO
4.89%
1.9M
+504,315 (+26.89%)
Jun 30, 2026
PRICE T ROWE ASSOCIATES INC /MD/
4.88%
1.9M
+326,049 (+17.39%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
4.84%
1.9M
+8,579 (+0.46%)
Dec 31, 2024

Current Ownership Distribution

  • Institutions265.4M (90.55%)
  • Mutual Funds20.5M (6.99%)
  • Insiders7.2M (2.46%)
  • Other0 (0.00%)

Insider Transactions

  • 2.46% (7.2M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 7
    Number of InsiderSelling (last 12 months)
  • $887.3M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Yu Jonathan Yen-Wen
Chief Operating Officer
Exempt
Aug 12, 2026
$0.00
804
$0.00
22,943
Yu Jonathan Yen-Wen
Chief Operating Officer
Exempt
Aug 12, 2026
$10,854.00
804
$13.50
55,128
Yu Jonathan Yen-Wen
Chief Operating Officer
Sell
Aug 12, 2026
$66,444.57
804
$82.64
54,324
Yu Jonathan Yen-Wen
Chief Operating Officer
Exempt
Jul 07, 2026
$0.00
100
$0.00
23,747
Yu Jonathan Yen-Wen
Chief Operating Officer
Exempt
Jul 07, 2026
$1,350.00
100
$13.50
54,424
Yu Jonathan Yen-Wen
Chief Operating Officer
Sell
Jul 07, 2026
$8,250.00
100
$82.50
54,324
Khara Rahul
Chief Legal Officer
Exempt
Jun 29, 2026
$0.00
1,649
$0.00
54,804
Khara Rahul
Chief Legal Officer
Exempt
Jun 29, 2026
$24,223.81
1,649
$14.69
53,822
Khara Rahul
Chief Legal Officer
Sell
Jun 29, 2026
$123,675.00
1,649
$75.00
52,173
Khara Rahul
Chief Legal Officer
Exempt
Jun 26, 2026
$12,501.19
851
$14.69
53,024
Khara Rahul
Chief Legal Officer
Sell
Jun 26, 2026
$63,825.00
851
$75.00
52,173
Khara Rahul
Chief Legal Officer
Exempt
Jun 26, 2026
$0.00
851
$0.00
56,453
AHMED NADIM
Award
Jun 18, 2026
$0.00
5,176
$0.00
5,176
Chin Mark
Award
Jun 18, 2026
$0.00
6,212
$0.00
6,212
Quisel John D
Chief Executive Officer
Exempt
Jun 18, 2026
$0.00
34,000
$0.00
41,375
GEMAYEL GEORGES
Award
Jun 18, 2026
$0.00
6,212
$0.00
6,212
Khara Rahul
Chief Legal Officer
Exempt
Jun 18, 2026
$0.00
7,500
$0.00
57,304
Quisel John D
Chief Executive Officer
Exempt
Jun 18, 2026
$335,240.00
34,000
$9.86
260,064
Khara Rahul
Chief Legal Officer
Exempt
Jun 18, 2026
$110,175.00
7,500
$14.69
59,673
Quisel John D
Chief Executive Officer
Sell
Jun 18, 2026
$1.6M
22,927
$69.92
237,137
Khara Rahul
Chief Legal Officer
Sell
Jun 18, 2026
$377,688.42
5,400
$69.94
54,273
Quisel John D
Chief Executive Officer
Sell
Jun 18, 2026
$673,205.40
9,522
$70.70
227,615
Khara Rahul
Chief Legal Officer
Sell
Jun 18, 2026
$113,161.12
1,600
$70.73
52,673
Quisel John D
Chief Executive Officer
Sell
Jun 18, 2026
$111,071.14
1,551
$71.61
226,064
Khara Rahul
Chief Legal Officer
Sell
Jun 18, 2026
$35,811.00
500
$71.62
52,173
Yu Jonathan Yen-Wen
Chief Operating Officer
Exempt
Jun 16, 2026
$0.00
5,261
$0.00
1,753
Yu Jonathan Yen-Wen
Chief Operating Officer
Exempt
Jun 16, 2026
$0.00
13,351
$0.00
31,951
Yu Jonathan Yen-Wen
Chief Operating Officer
Exempt
Jun 16, 2026
$51,873.46
5,261
$9.86
59,585
Yu Jonathan Yen-Wen
Chief Operating Officer
Exempt
Jun 16, 2026
$131,640.86
13,351
$9.86
72,936
Yu Jonathan Yen-Wen
Chief Operating Officer
Sell
Jun 16, 2026
$801,101.79
11,651
$68.76
61,285