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Alta Partners Management Company, L.P.

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13F filer, CIK 2054419, JACKSON, WY

Alta Partners Management Company, L.P. reported $59,994,967 across 2 holdings for the quarter ended 2025-09-30, in a 13F-HR filed 2025-11-07.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0002054419-25-000004

Period
2025-09-30
Reported value
$60M
Holdings
2
Top 10 weight
100%
New
0
Sold out
0

Holdings, Q3 2025

Share positions as resolved from 13F-HR 0002054419-25-000004, largest first. % of portfolio is the value over $59,994,967, the sum of the share positions whose value is usable for ratios (method).

SecurityHistorySharesValue% of portfolioChangeLatest eventTimeline
TYRATYRA BIOSCIENCES INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 4,080,296 shares; 2025Q1: 4,080,296 shares; 2025Q2: 4,080,296 shares; 2025Q3: 4,080,296 shares 4,080,296$57.1M95.15%0Timeline
VIRVIR BIOTECHNOLOGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2023Q4: restricted; 2024Q1: restricted; 2024Q2: restricted; 2024Q3: not loaded; 2024Q4: 489,485 shares; 2025Q1: 501,917 shares; 2025Q2: 509,917 shares; 2025Q3: 509,917 shares 509,917$2.91M4.85%0Timeline

How Q3 2025 was built

Available 13F filings of this filer for the quarter and their roles: the base report is the latest original or restatement, NEW HOLDINGS amendments filed after it are added (method).

FilingRoleAmendmentFiledAcceptedIngested
13F-HR 0002054419-25-000004 base2025-11-07acceptance time not in the bulk data set