Skip to content
Disclosery

WILLIAM JOHN SEMPOLINSKI: ASML position timeline

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

WILLIAM JOHN SEMPOLINSKI held 710 ASML 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 710 shares
    Change vs previous 13F 0 shares

    0.57% of the 13F portfolio, value $1,412,502.

    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 710 shares
    Change vs previous 13F 0 shares

    0.47% of the 13F portfolio, value $937,789.

    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 710 shares
    Change vs previous 13F not available

    0.37% of the 13F portfolio, value $759,601.

    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).