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Disclosery

Stonebrook Private Inc.: BRK-B position timeline

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

Stonebrook Private Inc. held 4,800 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 4,800 shares
    Change vs previous 13F -38 shares

    0.44% of the 13F portfolio, value $2,401,872.

    13F-HR 0001765380-26-000393 filed by Stonebrook Private 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 4,838 shares
    Change vs previous 13F +914 shares

    0.49% of the 13F portfolio, value $2,318,370.

    13F-HR 0001765380-26-000202 filed by Stonebrook Private 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 3,924 shares
    Change vs previous 13F +127 shares

    0.41% of the 13F portfolio, value $1,972,399.

    13F-HR 0001765380-26-000103 filed by Stonebrook Private Inc.
    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 3,797 shares
    Change vs previous 13F +7 shares

    0.41% of the 13F portfolio, value $1,908,904.

    13F-HR 0001765380-25-000461 filed by Stonebrook Private Inc.
    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 3,790 shares
    Change vs previous 13F +140 shares

    0.43% of the 13F portfolio, value $1,841,068.

    13F-HR 0001765380-25-000325 filed by Stonebrook Private Inc.
    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 3,650 shares
    Change vs previous 13F +237 shares

    0.51% of the 13F portfolio, value $1,943,917.

    13F-HR 0001765380-25-000157 filed by Stonebrook Private Inc.
    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 3,413 shares
    Change vs previous 13F +170 shares

    0.4% of the 13F portfolio, value $1,547,045.

    13F-HR 0001765380-25-000116 filed by Stonebrook Private Inc.
    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 3,243 shares
    Change vs previous 13F not available

    0.39% of the 13F portfolio, value $1,492,623.

    13F-HR 0001765380-24-000429 filed by Stonebrook Private Inc.
    Filed (acceptance time not in the bulk data set), ingested

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