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Disclosery

BlackRock, Inc.: OSIS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BlackRock, Inc. on OSIS, newest first. How the timeline and the estimate are built.

BlackRock, Inc. held 2,552,027 OSIS shares at 2026-06-30 per its 13F-HR filed 2026-08-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,552,027 shares
    Change vs previous 13F +22,404 shares

    0.01% of the 13F portfolio, value $558,128,306.

    13F-HR 0002012383-26-003238 filed by BlackRock, 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 2,529,623 shares
    Change vs previous 13F -32,279 shares

    0.01% of the 13F portfolio, value $671,640,204.

    13F-HR 0002012383-26-001841 filed by BlackRock, 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 2,561,902 shares
    Change vs previous 13F +57,646 shares

    0.01% of the 13F portfolio, value $653,438,725.

    13F-HR 0002012383-26-000920 filed by BlackRock, 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 2,504,256 shares
    Change vs previous 13F -452 shares

    0.01% of the 13F portfolio, value $624,160,764.

    13F-HR 0002012383-25-002949 filed by BlackRock, 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 2,504,708 shares
    Change vs previous 13F -54,622 shares

    0.01% of the 13F portfolio, value $563,208,638.

    13F-HR 0001060021-25-000120 filed by BlackRock, 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 2,559,330 shares
    Change vs previous 13F -123,310 shares

    0.01% of the 13F portfolio, value $497,380,191.

    13F-HR 0001576419-25-000869 filed by BlackRock, Inc.
    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 2,682,640 shares
    Change vs previous 13F +28,078 shares

    0.01% of the 13F portfolio, value $449,154,415.

    13F-HR 0001060021-25-000002 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 2,654,562 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $403,042,149.

    13F-HR 0001426459-24-000006 filed by BlackRock, Inc.
    Filed (acceptance time not in the bulk data set), ingested

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