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Alta Partners Management Company, L.P.

13F filer · CIK 0002054419
Reported Jul 22, 2026
13F portfolio value$127MU.S. long equity reported on 13F
Positions20 new · 0 closed
Net flow last quarter$0Buys minus sells
Top 10 positions weight100.0%Concentration

Holdings

13F · last 4 quarters free
Scroll for earlier quarters
CompanyValue% of portfolio% of companyPOSITION CHANGE qoq %First reported
Q2 2026Reported Jul 22, 20262 positions
TYRATyra Biosciences, Inc.$122M95.92%6.41%Not reportedQ4 2024
VIRVir Biotechnology, Inc.$5.2M4.08%0.30%Not reportedQ4 2024
Q1 2026Reported Apr 21, 20262 positions
TYRATyra Biosciences, Inc.$146M96.97%6.43%Not reportedQ4 2024
VIRVir Biotechnology, Inc.$4.57M3.03%0.32%Not reportedQ4 2024
Q4 2025Reported Jan 13, 20262 positions
TYRATyra Biosciences, Inc.$101M97.03%7.12%-6.3%Q4 2024
VIRVir Biotechnology, Inc.$3.07M2.97%0.37%Not reportedQ4 2024
Q3 2025Reported Nov 7, 20252 positions
TYRATyra Biosciences, Inc.$57.1M95.15%7.65%Not reportedQ4 2024
VIRVir Biotechnology, Inc.$2.91M4.85%0.37%Not reportedQ4 2024
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