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Portfolio (Quarterly) Guide ↗

MPM BIOIMPACT LLC

· CIK 0001687078
13F Portfolio $1.3B AUM 41 positions Filed May 15, 2026 EDGAR ↗ ← All Funds
Q1 2026 Q4 2025 · All 11 New 6 Added 7 Reduced 8 Exited
Page 3 of 3  ·  41 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
41 HOWL Werewolf Therapeutics, Inc. Healthcare 1,208,810.0 $1.0M 0.08% -185K -13.3% $0.83 -46.7%
Page 3 of 3  ·  41 positions

Period Price is the implied market price on the last day of the reporting period, calculated as reported value ÷ shares held. It is not the fund's purchase price or cost basis — the fund may have initiated or added to the position at any point during the quarter at a different price. Since Period shows the price change from that quarter-end snapshot to today's last price — it reflects stock movement after the report date, not the fund's actual return.

Sector Allocation
Healthcare 100.0%