Through the 90-day period concluding December 12, 2025, Disc Medicine's top three insider stakeholders include TenPercentOwner Dmi Llc Ai (2.81Mn shares), TenPercentOwner Braden Michael Leonard (524.75K shares), Director Kevin Bitterman (385.55K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Braden Michael Leonard | 524,750 | 27 Oct, 2022 | |
| Development Holdings, Llc Fs | 292,875 | 09 Feb, 2021 | |
| James B. Tananbaum | 292,875 | 09 Feb, 2021 | |
| 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 | |
| Kevin Bitterman | 385,549 | 17 Oct, 2025 | |
| Advisors Llc Orbimed | 186,541 | 20 Dec, 2023 | |
| Mona Ashiya | 186,541 | 20 Dec, 2023 | |
| John D Quisel | Chief Executive Officer | 171,828 | 11 Sep, 2025 |
| William Jacob Savage | Chief Medical Officer | 88,795 | 01 Jul, 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 | 37,583 | 20 Feb, 2025 |
| Joanne Bryce | Chief Financial Officer | 23,665 | 01 Mar, 2024 |
| Brian Piekos | Cfo | 1,762 | 02 Jun, 2022 |
| 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 |
|---|---|---|---|---|---|---|---|---|
| 11 Nov, 2025 | Jonathan Yen-Wen Yu | Common Stock | A | 30,000 | $2.65 | 70,555 | D | M |
| 11 Nov, 2025 | Jonathan Yen-Wen Yu | Common Stock | D | 8,015 | $83.15 | 62,540 | D | S |
| 11 Nov, 2025 | Jonathan Yen-Wen Yu | Common Stock | D | 4,585 | $83.99 | 57,955 | D | S |
| 11 Nov, 2025 | Jonathan Yen-Wen Yu | Common Stock | D | 9,360 | $85.33 | 48,595 | D | S |
| 11 Nov, 2025 | Jonathan Yen-Wen Yu | Common Stock | D | 8,040 | $85.91 | 40,555 | D | S |
| 22 Oct, 2025 | Dmi Llc Ai | Common Stock | D | 744,047 | $80.47 | 2,814,379 | D | S |
| 15 Oct, 2025 | Kevin Bitterman | Common Stock | D | 19,542 | $77.16 | 481,079 | I | S |
| 15 Oct, 2025 | Kevin Bitterman | Common Stock | D | 2,618 | $77.76 | 478,461 | I | S |
| 16 Oct, 2025 | Kevin Bitterman | Common Stock | D | 1,425 | $77.11 | 477,036 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 1,125 | $84.89 | 475,911 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 1,125 | $84.89 | 419,424 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 3,000 | $86.13 | 472,911 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 3,000 | $86.13 | 416,424 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 5,066 | $87.37 | 467,845 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 5,065 | $87.37 | 411,359 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 13,014 | $88.91 | 454,831 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 13,014 | $88.91 | 398,345 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 2,251 | $89.70 | 452,580 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 2,251 | $89.70 | 396,094 | I | S |
| 17 Oct, 2025 | Kevin Bitterman | Common Stock | D | 10,094 | $90.66 | 442,486 | I | S |