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Disclosery

Driehaus Capital Management LLC: OSIS position timeline

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

Driehaus Capital Management LLC held 0 OSIS 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 0 shares
    Change vs previous 13F -117,963 shares

    13F-HR 0000938206-26-000048 filed by Driehaus 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 ended2026-03-31
    13F 117,963 shares
    Change vs previous 13F -117,805 shares

    0.23% of the 13F portfolio, value $31,320,356.

    13F-HR 0000938206-26-000031 filed by Driehaus 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 ended2025-12-31
    13F 235,768 shares
    Change vs previous 13F +88,714 shares

    0.41% of the 13F portfolio, value $60,134,986.

    13F-HR 0000938206-26-000018 filed by Driehaus 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 ended2025-09-30
    13F 147,054 shares
    Change vs previous 13F +44,341 shares

    0.26% of the 13F portfolio, value $36,651,739.

    13F-HR 0000938206-25-000056 filed by Driehaus 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 ended2025-06-30
    13F 102,713 shares
    Change vs previous 13F not available

    0.18% of the 13F portfolio, value $23,096,045.

    13F-HR 0000938206-25-000037 filed by Driehaus Capital Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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