Monte Rosa Therapeutics's top three insider shareholders as of March 23, 2026 are Rick Yang (TenPercentOwner, 7.69Mn shares), Peter W. Sonsini (TenPercentOwner, 7.69Mn shares), Enterprise Associates 17, L.P. New (TenPercentOwner, 7.69Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Edward T Mathers | 0 | 7,692,298 | 30 Jun, 2021 | |
| Liza Landsman | 0 | 7,692,298 | 30 Jun, 2021 | |
| Mohamad Makhzoumi | 0 | 7,692,298 | 30 Jun, 2021 | |
| Ali Behbahani | 0 | 7,692,298 | 30 Jun, 2021 | |
| Anthony A. Jr. Florence | 0 | 7,692,298 | 30 Jun, 2021 | |
| Scott D Sandell | 0 | 7,692,298 | 30 Jun, 2021 | |
| Ali Behbahani | 0 | 7,692,298 | 30 Jun, 2021 | |
| Anthony A. Jr. Florence | 0 | 7,692,298 | 30 Jun, 2021 | |
| Carmen Chang | 0 | 7,692,298 | 30 Jun, 2021 | |
| Forest Baskett | 0 | 7,692,298 | 30 Jun, 2021 | |
| Rick Yang | 0 | 7,692,298 | 30 Jun, 2021 | |
| Peter W. Sonsini | 0 | 7,692,298 | 30 Jun, 2021 | |
| Enterprise Associates 17, L.P. New | 7,692,298 | 0 | 30 Jun, 2021 | |
| Carmen Chang | 0 | 7,692,298 | 30 Jun, 2021 | |
| Paul Edward Walker | 0 | 7,692,298 | 30 Jun, 2021 | |
| Venture Capital Vi, L.P. Versant | 4,079,469 | 1,573,453 | 30 Oct, 2024 | |
| Asset Management, Lp Cormorant | 0 | 3,202,200 | 30 Jun, 2021 | |
| Markus Warmuth | President Ceo | 613,471 | 0 | 04 Mar, 2026 |
| Sharon Townson | Chief Scientific Officer | 67,845 | 0 | 05 Jan, 2026 |
| Filip Janku | Chief Medical Officer | 65,837 | 0 | 24 Feb, 2026 |
| Jennifer Champoux | Chief Operating Officer | 62,371 | 0 | 05 Jan, 2026 |
| Philip Nickson | Chief Business Legal Officer | 60,845 | 0 | 05 Jan, 2026 |
| Edmund Dunn | Principal Accounting Officer | 22,554 | 0 | 05 Mar, 2026 |
| Chandra P. Leo | 10,000 | 0 | 25 Mar, 2025 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 04 Mar, 2026 | Edmund Dunn | Common Stock | D | 139 | $17.96 | 22,554 | D | S |
| 02 Mar, 2026 | Markus Warmuth | Common Stock | D | 5,466 | $17.92 | 613,471 | D | S |
| 27 Feb, 2026 | Edmund Dunn | Common Stock | A | 25,164 | $13.41 | 47,857 | D | M |
| 27 Feb, 2026 | Edmund Dunn | Common Stock | D | 25,164 | $18.10 | 22,693 | D | S |
| 02 Mar, 2026 | Edmund Dunn | Common Stock | A | 536 | $13.41 | 23,229 | D | M |
| 02 Mar, 2026 | Edmund Dunn | Common Stock | D | 536 | $17.50 | 22,693 | D | S |
| 27 Feb, 2026 | Edmund Dunn | Stock Option (Right to Buy) | D | 25,164 | $0.00 | 536 | D | M |
| 02 Mar, 2026 | Edmund Dunn | Stock Option (Right to Buy) | D | 536 | $0.00 | 0 | D | M |
| 23 Feb, 2026 | Filip Janku | Common Stock | D | 9,189 | $19.50 | 65,837 | D | S |
| 07 Jan, 2026 | Markus Warmuth | Common Stock | D | 3,707 | $23.24 | 620,696 | D | S |
| 07 Jan, 2026 | Markus Warmuth | Common Stock | D | 1,450 | $23.88 | 619,246 | D | S |
| 07 Jan, 2026 | Markus Warmuth | Common Stock | D | 309 | $24.57 | 618,937 | D | S |
| 02 Jan, 2026 | Jennifer Champoux | Common Stock | A | 35,000 | - | 65,000 | D | A |
| 05 Jan, 2026 | Edmund Dunn | Common Stock | D | 1,039 | $15.17 | 22,693 | D | S |
| 02 Jan, 2026 | Markus Warmuth | Common Stock | A | 90,000 | - | 634,538 | D | A |
| 02 Jan, 2026 | Sharon Townson | Common Stock | A | 35,000 | - | 71,000 | D | A |
| 02 Jan, 2026 | Filip Janku | Common Stock | A | 31,000 | - | 78,181 | D | A |
| 02 Jan, 2026 | Philip Nickson | Common Stock | A | 28,000 | - | 64,000 | D | A |
| 05 Jan, 2026 | Jennifer Champoux | Common Stock | D | 2,629 | $15.17 | 62,371 | D | S |
| 05 Jan, 2026 | Sharon Townson | Common Stock | D | 3,155 | $15.17 | 67,845 | D | S |