MPM ASSET MANAGEMENT LLC — 13F Holdings & Portfolio
CIK 1263048 · latest 13F-HR filed 2025-11-14
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$44.5M
Long-equity book
4
Distinct positions
2025-09-30
Filed 2025-11-14
+0 / −1 / ↑3 / ↓1
vs 2025-06-30
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- Werewolf Therapeutics, Inc.$3.8M +80.7%
- Dyne Therapeutics, Inc.$2.1M +32.9%
- Repare Therapeutics, Inc.$414.9K +26.6%
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | Entrada Therapeutics, Inc. | TRDA | 29384C108 | $25.4M | 57.09% | 4,381,062 | SH |
| 2 | Dyne Therapeutics, Inc. | DYN | 26818M108 | $8.6M | 19.40% | 682,376 | SH |
| 3 | Werewolf Therapeutics, Inc. | HOWL | 95075A107 | $8.5M | 19.08% | 4,309,860 | SH |
| 4 | Repare Therapeutics, Inc. | RPTX | 760273102 | $2.0M | 4.43% | 1,121,318 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2025-09-30 | 2025-11-14 | $44.5M | 4 | 0001193125-25-283116 |
| 2025-06-30 | 2025-08-14 | $43.3M | 5 | 0000950123-25-008430 |