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BEACONLIGHT CAPITAL, LLC: STX position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BEACONLIGHT CAPITAL, LLC on STX, newest first. How the timeline and the estimate are built.

BEACONLIGHT CAPITAL, LLC held 0 STX shares at 2026-03-31 per its 13F-HR filed 2026-05-14.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -12,651 shares

    13F-HR 0000919574-26-003095 filed by BEACONLIGHT CAPITAL, 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 ended2025-12-31
    13F 12,651 shares
    Change vs previous 13F -13,595 shares

    2.03% of the 13F portfolio, value $3,483,959.

    13F-HR 0000919574-26-001169 filed by BEACONLIGHT CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 26,246 shares
    Change vs previous 13F -70,151 shares

    3.06% of the 13F portfolio, value $6,195,631.

    13F-HR 0000919574-25-006888 filed by BEACONLIGHT CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 96,397 shares
    Change vs previous 13F not available

    8.14% of the 13F portfolio, value $13,912,979.

    13F-HR 0000919574-25-004668 filed by BEACONLIGHT CAPITAL, LLC
    Filed (acceptance time not in the bulk data set), ingested

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