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Disclosery

Tidemark, LLC: BRK-B position timeline

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

Tidemark, LLC held 2,446 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-10.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,446 shares
    Change vs previous 13F +26 shares

    0.28% of the 13F portfolio, value $1,223,704.

    13F-HR 0002009591-26-000006 filed by Tidemark, 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 2,420 shares
    Change vs previous 13F +168 shares

    0.29% of the 13F portfolio, value $1,159,424.

    13F-HR 0002009591-26-000004 filed by Tidemark, 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 2,252 shares
    Change vs previous 13F -110 shares

    0.32% of the 13F portfolio, value $1,131,718.

    13F-HR 0002009591-26-000002 filed by Tidemark, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-09-30
    13F 2,362 shares
    Change vs previous 13F +154 shares

    0.35% of the 13F portfolio, value $1,187,215.

    13F-HR 0002009591-25-000003 filed by Tidemark, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 2,208 shares
    Change vs previous 13F +274 shares

    0.35% of the 13F portfolio, value $1,072,345.

    13F-HR 0001855205-25-000046 filed by Tidemark, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 1,934 shares
    Change vs previous 13F +159 shares

    0.38% of the 13F portfolio, value $1,029,739.

    13F-HR 0001855205-25-000028 filed by Tidemark, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 1,775 shares
    Change vs previous 13F +24 shares

    0.31% of the 13F portfolio, value $804,350.

    13F-HR 0001855205-25-000003 filed by Tidemark, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 1,751 shares
    Change vs previous 13F not available

    0.33% of the 13F portfolio, value $805,918.

    13F-HR 0001855205-24-000055 filed by Tidemark, LLC
    Filed (acceptance time not in the bulk data set), ingested

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