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Alta Partners Management Company, L.P.: TYRA position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Alta Partners Management Company, L.P. on TYRA, newest first. How the timeline and the estimate are built.

Alta Partners Management Company, L.P. held 3,823,425 TYRA shares at 2026-06-30 per its 13F-HR filed 2026-07-22.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 3,823,425 shares
    Change vs previous 13F 0 shares

    95.92% of the 13F portfolio, value $122,120,195.

    13F-HR 0002054419-26-000010 filed by Alta Partners Management Company, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 3,823,425 shares
    Change vs previous 13F 0 shares

    96.97% of the 13F portfolio, value $146,437,178.

    13F-HR 0002054419-26-000006 filed by Alta Partners Management Company, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 3,823,425 shares
    Change vs previous 13F -256,871 shares

    97.03% of the 13F portfolio, value $100,517,843.

    13F-HR 0002054419-26-000003 filed by Alta Partners Management Company, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 4,080,296 shares
    Change vs previous 13F 0 shares

    95.15% of the 13F portfolio, value $57,083,341.

    13F-HR 0002054419-25-000004 filed by Alta Partners Management Company, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 4,080,296 shares
    Change vs previous 13F 0 shares

    93.82% of the 13F portfolio, value $39,048,433.

    13F-HR 0001415889-25-021829 filed by Alta Partners Management Company, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 4,080,296 shares
    Change vs previous 13F 0 shares

    90.83% of the 13F portfolio, value $37,946,753.

    13F-HR 0001415889-25-012667 filed by Alta Partners Management Company, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 4,080,296 shares
    Change vs previous 13F not available

    89.47% of the 13F portfolio, value $56,716,114.

    13F-HR 0001104659-25-009680 filed by Alta Partners Management Company, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).