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Disclosery

Thayer Partners, LLC / MA: BRK-B position timeline

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

Thayer Partners, LLC / MA held 878 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-31.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 878 shares
    Change vs previous 13F -190 shares

    0.18% of the 13F portfolio, value $439,342.

    13F-HR 0001765380-26-000256 filed by Thayer Partners, LLC / MA
    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 1,068 shares
    Change vs previous 13F +87 shares

    0.24% of the 13F portfolio, value $511,786.

    13F-HR 0001765380-26-000164 filed by Thayer Partners, LLC / MA
    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 981 shares
    Change vs previous 13F not available

    0.24% of the 13F portfolio, value $493,100.

    13F-HR 0002010185-26-000001 filed by Thayer Partners, LLC / MA
    Filed (acceptance time not in the bulk data set), ingested

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