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Lubar & Co., Inc: BRK-A position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Lubar & Co., Inc on BRK-A, newest first. How the timeline and the estimate are built.

Lubar & Co., Inc held 20 BRK-A shares at 2026-06-30 per its 13F-HR filed 2026-07-28.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 20 shares
    Change vs previous 13F 0 shares

    11.85% of the 13F portfolio, value $14,977,000.

    13F-HR 0001140361-26-029846 filed by Lubar & Co., Inc
    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 20 shares
    Change vs previous 13F 0 shares

    12.07% of the 13F portfolio, value $14,362,800.

    13F-HR 0001140361-26-016498 filed by Lubar & Co., Inc
    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 20 shares
    Change vs previous 13F not available

    11.24% of the 13F portfolio, value $15,096,000.

    13F-HR 0001140361-26-003445 filed by Lubar & Co., Inc
    Filed (acceptance time not in the bulk data set), ingested

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