Disc Medicine Inc. (IRON)
Who owns Disc Medicine Inc. (IRON)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 85.7% of the shares are freely tradable; institutional investors hold 113.7%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 14.63 | 5,586,894 | +2.5 | 03/31/2026 |
| RA Capital Management, LLC | 6.41 | 2,450,221 | +24.0 | 03/31/2026 |
| BlackRock Inc | 5.95 | 2,273,831 | -0.1 | 03/31/2026 |
| Vanguard Group Inc | 4.63 | 1,767,680 | +22.1 | 12/31/2025 |
| Wellington Management Company LLP | 4.54 | 1,735,376 | +14.3 | 03/31/2026 |
| State Street Corp | 4.45 | 1,698,244 | +43.0 | 03/31/2026 |
| T. Rowe Price Associates, Inc. | 4.06 | 1,549,350 | -8.8 | 03/31/2026 |
| Atlas Venture Life Science Advisors, LLC | 3.96 | 1,513,875 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.60 | 1,375,430 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Strategic Advisers Fidelity US TtlStk | 4.89 | 1,868,623 | +3.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 13. Jul 2026 | Quisel John D | Chief Executive Officer | Sell | 6,400 | 76.05 | 486,733 |
| 13. Jul 2026 | Quisel John D | Chief Executive Officer | Sell | 16,896 | 74.95 | 1,266,303 |
| 13. Jul 2026 | Quisel John D | Chief Executive Officer | Sell | 9,704 | 74.27 | 720,744 |
| 13. Jul 2026 | Quisel John D | Chief Executive Officer | Other | 7,416 | 13.50 | 100,116 |
| 13. Jul 2026 | Quisel John D | Chief Executive Officer | Other | 25,584 | 9.86 | 252,258 |
| 7. Jul 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | Sell | 100 | 82.50 | 8,250 |
| 7. Jul 2026 | Yu Jonathan Yen-Wen | Chief Operating Officer | Other | 100 | 13.50 | 1,350 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.