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MPM BIOIMPACT LLC

Position in ANNX — Annexon, Inc.

CIK 1687078 BOSTON, MA

Position in ANNX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$20,238,261
New position
Shares Held
3,544,354
first reported quarter
Ownership
1.73%
of shares outstanding
% of Portfolio
1.23%
of 13F equity value
Holder Rank
#14
of 216 holders
Holding Since
Jun 2026
1 quarter on record
Voting authority Sole 100% Shared 0% None 0%

Position in Biotechnology

Healthcare · as of Jun 30, 2026

MPM BIOIMPACT LLC holds $1,463,416,616 across 34 Biotechnology names. ANNX ranks #29 (1.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ANNX

Export CSV
1 filing row on record
Report Date Value (USD) Shares
2026-06-30 $20,238,261 3,544,354