IRON
Disc Medicine, Inc.
NASDAQ · Healthcare · Biotechnology · US
$79.23
−0.18%0
Insider buys (3m)
34
Insider sells (3m)
-$15.7M
Net value (3m)
+18.8%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 2,810 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 9 | $81 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 54 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 2,339 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 511 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 22,090 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 26,542 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 1 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 58 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 70 | $80 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 2 | $81 |
| Sep 3, 2026 | Bitterman Kevin · director | Sale | 10 | $81 |
| Aug 26, 2026 | Yu Jonathan Yen-Wen · officer: Chief Operating Officer | Sale | 300 | $83 |
| Aug 26, 2026 | Yu Jonathan Yen-Wen · officer: Chief Operating Officer | Sale | 8,796 | $83 |
| Aug 26, 2026 | Yu Jonathan Yen-Wen · officer: Chief Operating Officer | M-Exempt | 8,796 | $14 |
| Aug 26, 2026 | Yu Jonathan Yen-Wen · officer: Chief Operating Officer | M-Exempt | 300 | $14 |
| Aug 18, 2026 | Quisel John D · director, officer: Chief Executive Officer | Sale | 8,400 | $78 |
| Aug 18, 2026 | Quisel John D · director, officer: Chief Executive Officer | M-Exempt | 33,000 | $14 |
| Aug 18, 2026 | Quisel John D · director, officer: Chief Executive Officer | Sale | 12,712 | $79 |
| Aug 18, 2026 | Quisel John D · director, officer: Chief Executive Officer | Sale | 11,888 | $80 |
| Aug 14, 2026 | Yu Jonathan Yen-Wen · officer: Chief Operating Officer | Sale | 804 | $83 |
| Aug 14, 2026 | Yu Jonathan Yen-Wen · officer: Chief Operating Officer | M-Exempt | 804 | $14 |
| Aug 7, 2026 | Khara Rahul · officer: Chief Legal Officer | Sale | 5,000 | $80 |
| Aug 7, 2026 | Khara Rahul · officer: Chief Legal Officer | M-Exempt | 5,000 | $15 |
| Jul 14, 2026 | Quisel John D · director, officer: Chief Executive Officer | M-Exempt | 25,584 | $9.86 |
| Jul 14, 2026 | Quisel John D · director, officer: Chief Executive Officer | Sale | 9,704 | $74 |
| Jul 14, 2026 | Quisel John D · director, officer: Chief Executive Officer | Sale | 6,400 | $76 |
| Jul 14, 2026 | Quisel John D · director, officer: Chief Executive Officer | Sale | 16,896 | $75 |
| Jul 14, 2026 | Quisel John D · director, officer: Chief Executive Officer | M-Exempt | 7,416 | $14 |
| Jul 9, 2026 | Yu Jonathan Yen-Wen · officer: Chief Operating Officer | M-Exempt | 100 | $14 |
Institutional positioning
13F filings over the trailing two quarters
New 90Increased 160Reduced 109Sold out 24
| Filer | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 5,586,894 | May 15, 2026 |
| FMR LLC | Reduced | 4,894,473 | Aug 13, 2026 |
| BlackRock, Inc. | Increased | 2,467,899 | Aug 7, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Increased | 2,450,221 | May 15, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 2,450,221 | Aug 14, 2026 |
| BLACKROCK, INC. | Reduced | 2,273,831 | May 13, 2026 |
| JPMORGAN CHASE & CO | Increased | 1,875,795 | Aug 12, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 1,875,399 | Aug 14, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 1,741,351 | Aug 14, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 1,735,376 | May 15, 2026 |
| STATE STREET CORP | Increased | 1,698,244 | May 15, 2026 |
| STATE STREET CORP | Reduced | 1,648,836 | Aug 7, 2026 |
| Vestal Point Capital, LP | Increased | 1,550,000 | Aug 14, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 1,549,350 | May 15, 2026 |
| ATLAS VENTURE LIFE SCIENCE ADVISORS, LLC | Unchanged | 1,513,875 | May 14, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Sep 3, 2026