Alta Partners Management Company, L.P.
Follow13F filer, CIK 2054419, JACKSON, WY
Alta Partners Management Company, L.P. reported $41,778,678 across 3 holdings for the quarter ended 2025-03-31, in a 13F-HR filed 2025-05-12.
Filed (acceptance time not in the bulk data set), ingested 13F-HR 0001415889-25-012667
- Period
- 2025-03-31
- Reported value
- $41.8M
- Holdings
- 3
- Top 10 weight
- 100%
- New
- 0
- Sold out
- 0
Largest buys vs the previous quarter
| Security | Shares change | Approx. value |
|---|---|---|
| VIRadded | +12,432 | $80.6K |
Ranked by the share change valued at this quarter's implied price (value over shares in the 13F). A position sold out is valued at the previous quarter's price, its last report.
Largest sells vs the previous quarter
None.
Holdings, Q1 2025
Share positions as resolved from 13F-HR 0001415889-25-012667, largest first. % of portfolio is the value over $41,778,678, the sum of the share positions whose value is usable for ratios (method).
| Security | History | Shares | Value | % of portfolio | Change | Latest event | Timeline |
|---|---|---|---|---|---|---|---|
| TYRATYRA BIOSCIENCES INC | 4,080,296 | $37.9M | 90.83% | 0 | Timeline | ||
| VIRVIR BIOTECHNOLOGY INC | 501,917 | $3.25M | 7.78% | +12,432 | Timeline | ||
| ALLAKOS INCALLAKOS INC | 2,546,147 | $580K | 1.39% | 0 |
How Q1 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).
| Filing | Role | Amendment | Filed | Accepted | Ingested |
|---|---|---|---|---|---|
| 13F-HR 0001415889-25-012667 | base | 2025-05-12 | acceptance time not in the bulk data set |