Disc Medicine
Develops heme and iron-homeostasis therapies for serious blood disorders.
$80.03
After-hours close−0.01 (−0.01%)
At close$80.04(−3.04%)
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Breakdown13F · Form 4
Institutions 119.47%Insiders 2.46%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 38.39M · Float 27.61M · 71.9% free float
Institutions13F, as of Jun 30, 2026
232 holders · 45.87M shares · 44 new positions · 120 increased · 65 reduced · 25 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| FMR LLC | 4.89M | 12.75% | −692.4K | Aug 13, 2026 |
| BlackRock, Inc. | 2.47M | 6.43% | +194.1K | Aug 7, 2026 |
| Ra Capital Management, L.P. | 2.45M | 6.38% | 0 | Aug 14, 2026 |
| JPMorgan Chase & Co | 1.88M | 4.89% | +504.3K | Aug 12, 2026 |
| Price T Rowe Associates Inc /MD/ | 1.88M | 4.88% | +326.0K | Aug 14, 2026 |
| Wellington Management Group LLP | 1.74M | 4.54% | +6.0K | Aug 14, 2026 |
| State Street Corp | 1.65M | 4.29% | −49.4K | Aug 7, 2026 |
| Vestal Point Capital, LP | 1.55M | 4.04% | +850.0K | Aug 14, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| FMR LLC | 14.10% | 4.91M | 13G | Nov 5, 2025 ↗ |
| Access Industries Management, LLCincl. Len Blavatnik, Access Industries Holdings LLC +1 more | 8.00% | 3.02M | 13D | Oct 22, 2025 ↗ |
| BlackRock, Inc. | 6.20% | 1.85M | Nov 8, 2024 ↗ | |
| Wellington Group Holdings LLPincl. Wellington Management Company LLP, Wellington Management Group LLP +1 more | 6.19% | 1.84M | 13G | Nov 8, 2024 ↗ |
| RA Capital Management, L.P. | 5.90% | 2.23M | 13G | Jan 7, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| AI Dmi LLC | 10 percent owner | 2.81M | 7.33% | Oct 24, 2025 |
| John D. Quisel | director, officer: Chief Executive Officer | 226.1K | 0.59% | Aug 18, 2026 |
| Mona Ashiya | director | 186.5K | 0.49% | Mar 26, 2025 |
| Orbimed Advisors LLC | director | 186.5K | 0.49% | Mar 26, 2025 |
| Pamela Stephenson | officer: Chief Commercial Officer | 81.0K | 0.21% | Feb 17, 2026 |
| William Jacob Savage | officer: Chief Medical Officer | 79.5K | 0.21% | Apr 15, 2026 |
| Jean M. Franchi | officer: Chief Financial Officer | 64.3K | 0.17% | Apr 15, 2026 |
| Jonathan Yen-Wen Yu | officer: Chief Operating Officer | 54.3K | 0.14% | Aug 26, 2026 |
| Rahul Khara | officer: Chief Legal Officer | 52.3K | 0.14% | Aug 7, 2026 |
| Kevin Bitterman | director | 14.0K | 0.04% | Dec 18, 2025 |
3 ten-percent owners hold 4.10M shares by Form 4, outside the officers-and-directors figure above · 2 people have not refiled in the last 18 months (39.0K shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 25, 2026 | Jonathan Yen-Wen Yuofficer: Chief Operating Officer | Sale | 8,796 | $83.12 | 54,324 |
| Aug 24, 2026 | Jonathan Yen-Wen Yuofficer: Chief Operating Officer | Sale | 300 | $82.53 | 54,324 |
| Aug 17, 2026 | John D. Quiseldirector, officer: Chief Executive Officer | Sale · 3 lots | 33,000 | $79.15 | 226,064 |
| Aug 12, 2026 | Jonathan Yen-Wen Yuofficer: Chief Operating Officer | Sale | 804 | $82.64 | 54,324 |
| Aug 6, 2026 | Rahul Kharaofficer: Chief Legal Officer | Sale | 5,000 | $80.00 | 52,324 |
| Jul 13, 2026 | John D. Quiseldirector, officer: Chief Executive Officer | Sale · 3 lots | 33,000 | $74.96 | 226,064 |
| Jul 7, 2026 | Jonathan Yen-Wen Yuofficer: Chief Operating Officer | Sale | 100 | $82.50 | 54,324 |
| Jun 26, 2026 | Jonathan Yen-Wen Yuofficer: Chief Operating Officer | Sale | 300 | $72.50 | 54,324 |
| Jun 29, 2026 | Rahul Kharaofficer: Chief Legal Officer | Sale | 1,649 | $75.00 | 52,173 |
| Jun 22, 2026 | Jonathan Yen-Wen Yuofficer: Chief Operating Officer | Sale | 9,700 | $72.66 | 54,324 |
CongressHouse and Senate disclosures
Not reported.