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Disclosery

Atika Capital Management LLC: GKOS position timeline

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

Atika Capital Management LLC held 0 GKOS shares at 2025-12-31 per its 13F-HR filed 2026-02-13.

the latest 13F is the newest step

  1. period ended2025-12-31
    13F 0 shares
    Change vs previous 13F -212,400 shares

    13F-HR 0001214659-26-001658 filed by Atika Capital Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-09-30
    13F 212,400 shares
    Change vs previous 13F -107,100 shares

    1.48% of the 13F portfolio, value $17,321,220.

    13F-HR 0001214659-25-016379 filed by Atika Capital 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 ended2025-06-30
    13F 319,500 shares
    Change vs previous 13F +56,000 shares

    3.45% of the 13F portfolio, value $33,001,154.

    13F-HR 0001214659-25-011890 filed by Atika Capital 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 ended2025-03-31
    13F 263,500 shares
    Change vs previous 13F +24,000 shares

    3.98% of the 13F portfolio, value $25,933,671.

    13F-HR 0001214659-25-007540 filed by Atika Capital 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 ended2024-12-31
    13F 239,500 shares
    Change vs previous 13F -1,500 shares

    4.65% of the 13F portfolio, value $35,910,631.

    13F-HR 0001214659-25-002515 filed by Atika Capital 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 ended2024-09-30
    13F 241,000 shares
    Change vs previous 13F not available

    3.36% of the 13F portfolio, value $31,397,480.

    13F-HR 0001214659-24-018802 filed by Atika Capital Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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