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OpenArc Corporate Advisory, LLC: BRK-B position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of OpenArc Corporate Advisory, LLC on BRK-B, newest first. How the timeline and the estimate are built.

OpenArc Corporate Advisory, LLC held 41,832 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-05.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 41,832 shares
    Change vs previous 13F +1,588 shares

    0.25% of the 13F portfolio, value $20,932,314.

    13F-HR 0002111345-26-000003 filed by OpenArc Corporate Advisory, LLC
    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 40,244 shares
    Change vs previous 13F +5,876 shares

    0.28% of the 13F portfolio, value $19,284,925.

    13F-HR 0002111345-26-000002 filed by OpenArc Corporate Advisory, 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 34,368 shares
    Change vs previous 13F not available

    0.29% of the 13F portfolio, value $17,275,075.

    13F-HR 0002111345-26-000001 filed by OpenArc Corporate Advisory, LLC
    Filed (acceptance time not in the bulk data set), ingested

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