MPM Asset Management LLC
In its 13F for Q1 2024 (holdings as of March 31, 2024, filed May 15, 2024), MPM Asset Management LLC reported 6 stock positions worth $245.2 million. Its top holding was Dyne Therapeutics (DYN) at 40.0% of the portfolio, followed by Entrada Therapeutics (TRDA, 25.6%) and Iteos Therapeutics (ITOS, 15.2%). Compared with Q4 2023, it sold out of 1 and reduced 1. The biggest sale was an exit from Harpoon Therapeutics (HARP).
- Most Recent 13F
- Q3 2025
- Location
- BOSTON, MA
- CIK
- 0001263048
- Portfolio Value
- $245.2M (Q1 2024)
- SEC Filing
- 0000950123-24-005709 ↗ filed May 15, 2024
Holdings Value
Holdings 6 stocks · $245.2M
| DYN Dyne Therapeutics Inc. | 39.97% | 3,451,303 | $98.0M | Reduce -30.3% |
| TRDA Entrada Therapeutics Inc. | 25.58% | 4,425,784 | $62.7M | No change |
| ITOS Iteos Therapeutics Inc. | 15.24% | 2,738,785 | $37.4M | No change |
| HOWL Werewolf Therapeutics Inc. | 11.32% | 4,284,172 | $27.8M | No change |
| RPTX Repare Therapeutics Inc. | 4.31% | 2,242,636 | $10.6M | No change |
| ADAPY Adaptimmune Therapeutics-ADR | 3.58% | 5,555,461 | $8.8M | No change |
Portfolio Sells Q4 2023 → Q1 2024
Portfolio Buys Q4 2023 → Q1 2024
| None this quarter. | |||
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q3 2025 | 4 | $44.5M | TRDA, DYN, HOWL, RPTX |
| Q2 2025 | 5 | $43.3M | TRDA, DYN, HOWL, RPTX, ADAPY |
| Q1 2025 | 6 | $69.4M | TRDA, ITOS, DYN, HOWL, RPTX |
| Q4 2024 | 6 | $124.4M | TRDA, ITOS, DYN, HOWL, ADAPY |
| Q3 2024 | 6 | $145.3M | TRDA, ITOS, DYN, HOWL, RPTX |
| Q2 2024 | 6 | $182.1M | TRDA, DYN, ITOS, HOWL, RPTX |
| Q1 2024 | 6 | $245.2M | DYN, TRDA, ITOS, HOWL, RPTX |