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SAYBROOK CAPITAL /NC: BRK-B position timeline

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

SAYBROOK CAPITAL /NC held 105,995 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 105,995 shares
    Change vs previous 13F +2,132 shares

    13.28% of the 13F portfolio, value $53,038,838.

    13F-HR 0001044924-26-000003 filed by SAYBROOK CAPITAL /NC
    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 103,863 shares
    Change vs previous 13F +84 shares

    13.4% of the 13F portfolio, value $49,771,150.

    13F-HR 0001044924-26-000002 filed by SAYBROOK CAPITAL /NC
    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 103,779 shares
    Change vs previous 13F -31 shares

    12.99% of the 13F portfolio, value $52,164,514.

    13F-HR 0001044924-26-000001 filed by SAYBROOK CAPITAL /NC
    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 103,810 shares
    Change vs previous 13F +3,092 shares

    13.64% of the 13F portfolio, value $52,189,439.

    13F-HR 0001044924-25-000005 filed by SAYBROOK CAPITAL /NC
    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 100,718 shares
    Change vs previous 13F -1,514 shares

    13.83% of the 13F portfolio, value $48,925,783.

    13F-HR 0001044924-25-000003 filed by SAYBROOK CAPITAL /NC
    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 102,232 shares
    Change vs previous 13F -1,585 shares

    15.03% of the 13F portfolio, value $54,446,719.

    13F-HR 0001044924-25-000002 filed by SAYBROOK CAPITAL /NC
    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 103,817 shares
    Change vs previous 13F +631 shares

    12.57% of the 13F portfolio, value $47,058,170.

    13F-HR 0001044924-25-000001 filed by SAYBROOK CAPITAL /NC
    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 103,186 shares
    Change vs previous 13F not available

    13.41% of the 13F portfolio, value $47,492,388.

    13F-HR 0001044924-24-000004 filed by SAYBROOK CAPITAL /NC
    Filed (acceptance time not in the bulk data set), ingested

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