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Disclosery

MASON CAPITAL MANAGEMENT LLC: BORR position timeline

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

MASON CAPITAL MANAGEMENT LLC held 0 BORR shares at 2026-03-31 per its 13F-HR filed 2026-05-15.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -2,182,136 shares

    13F-HR 0001104659-26-062410 filed by MASON 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 ended2025-12-31
    13F 2,182,136 shares
    Change vs previous 13F not available

    1.57% of the 13F portfolio, value $8,794,008.

    13F-HR 0001104659-26-016335 filed by MASON CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

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