Over the 90-day window ending January 10, 2026, Disc Medicine's three dominant insider ownership positions are held by TenPercentOwner Dmi Llc Ai (2.81Mn shares), TenPercentOwner Venture Fund X, L.P. Atlas (1.60Mn shares), TenPercentOwner Holdings A/S Novo (1.09Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Braden Michael Leonard | 524,750 | 27 Oct, 2022 | |
| Dmi Llc Ai | 2,814,379 | 24 Oct, 2025 | |
| Venture Fund X, L.P. Atlas | 1,600,512 | 25 Jan, 2024 | |
| Holdings A/S Novo | 1,090,772 | 28 Jun, 2023 | |
| Advisors Llc Orbimed | 186,541 | 20 Dec, 2023 | |
| Mona Ashiya | 186,541 | 20 Dec, 2023 | |
| John D Quisel | Chief Executive Officer | 184,128 | 19 Dec, 2025 |
| William Jacob Savage | Chief Medical Officer | 78,845 | 29 Dec, 2025 |
| Pamela Stephenson | Chief Commercial Officer | 69,529 | 20 Feb, 2025 |
| Jean M. Franchi | Chief Financial Officer | 63,499 | 18 Jul, 2025 |
| Jonathan Yen-Wen Yu | Chief Operating Officer | 40,555 | 13 Nov, 2025 |
| Rahul Khara | Chief Legal Officer | 37,793 | 05 Jan, 2026 |
| Joanne Bryce | Chief Financial Officer | 23,665 | 01 Mar, 2024 |
| Brian Piekos | Cfo | 1,762 | 02 Jun, 2022 |
| Kevin Bitterman | 14,013 | 16 Dec, 2025 | |
| Jason Patrick Meyenburg | President & Ceo | 1,300 | 18 May, 2021 |
| Brian Richard Macdonald | Chief Innovation Officer | 12,276 | 30 Jun, 2023 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Jan, 2026 | Rahul Khara | Common Stock | D | 4,993 | $78.62 | 38,950 | D | S |
| 02 Jan, 2026 | Rahul Khara | Common Stock | A | 6,500 | $13.50 | 44,293 | D | M |
| 02 Jan, 2026 | Rahul Khara | Common Stock | D | 350 | $77.67 | 43,943 | D | S |
| 02 Jan, 2026 | Rahul Khara | Common Stock | D | 1,157 | $79.27 | 37,793 | D | S |
| 22 Dec, 2025 | William Jacob Savage | Common Stock | A | 99 | $13.50 | 78,845 | D | M |
| 22 Dec, 2025 | William Jacob Savage | Common Stock | A | 2,825 | $9.86 | 78,527 | D | M |
| 22 Dec, 2025 | William Jacob Savage | Common Stock | A | 219 | $9.86 | 78,746 | D | M |
| 19 Dec, 2025 | John D Quisel | Common Stock | A | 12,300 | $1.01 | 184,128 | D | M |
| 17 Dec, 2025 | Kevin Bitterman | Common Stock | D | 213 | $91.47 | 337,485 | I | S |
| 17 Dec, 2025 | Kevin Bitterman | - | - | 14,013 | I | |||
| 17 Dec, 2025 | Kevin Bitterman | Common Stock | D | 148 | $91.47 | 14,013 | I | S |
| 17 Dec, 2025 | Kevin Bitterman | Common Stock | D | 393 | $91.47 | 349,210 | I | S |
| 16 Dec, 2025 | Kevin Bitterman | - | - | 337,698 | I | |||
| 16 Dec, 2025 | Kevin Bitterman | - | - | 14,161 | I | |||
| 16 Dec, 2025 | Kevin Bitterman | - | - | 349,603 | I | |||
| 16 Dec, 2025 | Kevin Bitterman | Common Stock | D | 14,359 | $91.24 | 14,161 | I | S |
| 16 Dec, 2025 | Kevin Bitterman | Common Stock | D | 18,666 | $91.24 | 337,698 | I | S |
| 16 Dec, 2025 | Kevin Bitterman | Common Stock | D | 35,898 | $91.24 | 349,603 | I | S |
| 15 Dec, 2025 | Kevin Bitterman | Common Stock | A | 7,000 | $13.50 | 7,000 | D | M |
| 15 Dec, 2025 | Kevin Bitterman | - | - | 7,000 | D |