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Mayflower Financial Advisors, LLC: BRK-B position timeline

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

Mayflower Financial Advisors, LLC held 18,724 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-09.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 18,724 shares
    Change vs previous 13F -382 shares

    0.81% of the 13F portfolio, value $9,369,223.

    13F-HR 0001951757-26-000942 filed by Mayflower Financial Advisors, 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 19,106 shares
    Change vs previous 13F -1,143 shares

    1.11% of the 13F portfolio, value $9,155,626.

    13F-HR 0001951757-26-000724 filed by Mayflower Financial Advisors, 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 20,249 shares
    Change vs previous 13F +192 shares

    1.23% of the 13F portfolio, value $10,178,259.

    13F-HR 0001951757-26-000054 filed by Mayflower Financial Advisors, 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 20,057 shares
    Change vs previous 13F -720 shares

    1.27% of the 13F portfolio, value $10,083,676.

    13F-HR 0001951757-25-001150 filed by Mayflower Financial Advisors, 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 20,777 shares
    Change vs previous 13F +177 shares

    1.41% of the 13F portfolio, value $10,092,905.

    13F-HR 0001951757-25-001017 filed by Mayflower Financial Advisors, 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 20,600 shares
    Change vs previous 13F +40 shares

    1.67% of the 13F portfolio, value $10,971,053.

    13F-HR 0001951757-25-000501 filed by Mayflower Financial Advisors, 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 20,560 shares
    Change vs previous 13F -105 shares

    1.39% of the 13F portfolio, value $9,319,561.

    13F-HR 0001951757-25-000102 filed by Mayflower Financial Advisors, 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 20,665 shares
    Change vs previous 13F not available

    1.43% of the 13F portfolio, value $9,511,400.

    13F-HR 0001951757-24-001160 filed by Mayflower Financial Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

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