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OSTERWEIS CAPITAL MANAGEMENT INC: GKOS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OSTERWEIS CAPITAL MANAGEMENT INC on GKOS, newest first. How the timeline and the estimate are built.

OSTERWEIS CAPITAL MANAGEMENT INC held 40,539 GKOS 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 40,539 shares
    Change vs previous 13F -54,324 shares

    0.27% of the 13F portfolio, value $5,665,731.

    13F-HR 0001007524-26-000003 filed by OSTERWEIS CAPITAL MANAGEMENT INC
    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 94,863 shares
    Change vs previous 13F -6,750 shares

    0.53% of the 13F portfolio, value $10,212,951.

    13F-HR 0001007524-26-000002 filed by OSTERWEIS CAPITAL MANAGEMENT INC
    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 101,613 shares
    Change vs previous 13F -40,675 shares

    0.49% of the 13F portfolio, value $11,473,124.

    13F-HR 0001007524-26-000001 filed by OSTERWEIS CAPITAL MANAGEMENT INC
    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 142,288 shares
    Change vs previous 13F +47,915 shares

    0.52% of the 13F portfolio, value $11,603,586.

    13F-HR 0001007524-25-000003 filed by OSTERWEIS CAPITAL MANAGEMENT INC
    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 94,373 shares
    Change vs previous 13F +35,240 shares

    0.47% of the 13F portfolio, value $9,747,787.

    13F-HR 0001085146-25-005142 filed by OSTERWEIS CAPITAL MANAGEMENT INC
    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/A 59,133 shares
    Change vs previous 13F not available

    0.29% of the 13F portfolio, value $5,819,870.

    13F-HR/A 0001085146-25-003428 filed by OSTERWEIS CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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