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5AM Venture Management, LLC: SRZN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of 5AM Venture Management, LLC on SRZN, newest first. How the timeline and the estimate are built.

5AM Venture Management, LLC held 271,250 SRZN shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 271,250 shares
    Change vs previous 13F -116,250 shares

    2.44% of the 13F portfolio, value $7,038,938.

    13F-HR 0001799883-26-000003 filed by 5AM Venture Management, LLC
    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 387,500 shares
    Change vs previous 13F 0 shares

    3.13% of the 13F portfolio, value $11,287,875.

    13F-HR 0001799883-26-000002 filed by 5AM Venture Management, LLC
    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 387,500 shares
    Change vs previous 13F +77,500 shares

    2.75% of the 13F portfolio, value $8,757,500.

    13F-HR 0001799883-26-000001 filed by 5AM Venture Management, LLC
    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 310,000 shares
    Change vs previous 13F 0 shares

    1.46% of the 13F portfolio, value $3,994,350.

    13F-HR 0001799883-25-000002 filed by 5AM Venture Management, LLC
    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 310,000 shares
    Change vs previous 13F 0 shares

    1.07% of the 13F portfolio, value $2,771,400.

    13F-HR 0001085146-25-005241 filed by 5AM Venture Management, LLC
    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 310,000 shares
    Change vs previous 13F not available

    1.37% of the 13F portfolio, value $3,614,600.

    13F-HR 0001085146-25-003293 filed by 5AM Venture Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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