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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 $127,316,249 across 2 holdings for the quarter ended 2026-06-30, in a 13F-HR filed 2026-07-22.

Filed (acceptance time not in the bulk data set), ingested 13F-HR 0002054419-26-000010

Period
2026-06-30
Reported value
$127M
Holdings
2
Top 10 weight
100%
New
0
Sold out
0

Holdings, Q2 2026

Share positions as resolved from 13F-HR 0002054419-26-000010, largest first. % of portfolio is the value over $127,316,249, 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; 2024Q3: not loaded; 2024Q4: 4,080,296 shares; 2025Q1: 4,080,296 shares; 2025Q2: 4,080,296 shares; 2025Q3: 4,080,296 shares; 2025Q4: 3,823,425 shares; 2026Q1: 3,823,425 shares; 2026Q2: 3,823,425 shares 3,823,425$122M95.92%0Timeline
VIRVIR BIOTECHNOLOGY INCQuarterly shares; oldest to newest; scale is this security's eight-quarter maximum; 2024Q3: not loaded; 2024Q4: 489,485 shares; 2025Q1: 501,917 shares; 2025Q2: 509,917 shares; 2025Q3: 509,917 shares; 2025Q4: 509,917 shares; 2026Q1: 509,917 shares; 2026Q2: 509,917 shares 509,917$5.2M4.08%0Timeline

How Q2 2026 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 0002054419-26-000010 base2026-07-22acceptance time not in the bulk data set

Filings

Every filing of this filer: 13F reports and notices, the 13D and 13G it filed or is a reporting person of, and Forms 3, 4 and 5 it reported as an owner.

FilingSubjectFiledAcceptedIngested
13F-HR 0002054419-26-000010 Quarter ended 2026-06-302026-07-22acceptance time not in the bulk data set
13F-HR 0002054419-26-000006 Quarter ended 2026-03-312026-04-21acceptance time not in the bulk data set
13F-HR 0002054419-26-000003 Quarter ended 2025-12-312026-01-13acceptance time not in the bulk data set
13F-HR 0002054419-25-000004 Quarter ended 2025-09-302025-11-07acceptance time not in the bulk data set
13F-HR 0001415889-25-021829 Quarter ended 2025-06-302025-08-14acceptance time not in the bulk data set
13F-HR 0001415889-25-012667 Quarter ended 2025-03-312025-05-12acceptance time not in the bulk data set
13F-HR 0001104659-25-009680 Quarter ended 2024-12-312025-02-05acceptance time not in the bulk data set