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WILLIAM JOHN SEMPOLINSKI: IMTM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WILLIAM JOHN SEMPOLINSKI on IMTM, newest first. How the timeline and the estimate are built.

WILLIAM JOHN SEMPOLINSKI held 13,704 IMTM 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 13,704 shares
    Change vs previous 13F -40 shares

    0.3% of the 13F portfolio, value $730,834.

    13F-HR 0001951757-26-001260 filed by WILLIAM JOHN SEMPOLINSKI
    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 13,744 shares
    Change vs previous 13F +2,600 shares

    0.33% of the 13F portfolio, value $659,987.

    13F-HR 0001951757-26-001607 filed by WILLIAM JOHN SEMPOLINSKI
    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 11,144 shares
    Change vs previous 13F not available

    0.26% of the 13F portfolio, value $534,578.

    13F-HR 0001951757-26-001606 filed by WILLIAM JOHN SEMPOLINSKI
    Filed (acceptance time not in the bulk data set), ingested

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