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NORTHSTAR ASSET MANAGEMENT Co: BRK-B position timeline

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

NORTHSTAR ASSET MANAGEMENT Co held 32,637 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-27.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 32,637 shares
    Change vs previous 13F -336 shares

    3.04% of the 13F portfolio, value $16,153,031.

    13F-HR 0001132708-26-000003 filed by NORTHSTAR ASSET MANAGEMENT Co
    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 32,973 shares
    Change vs previous 13F -640 shares

    3.55% of the 13F portfolio, value $15,800,662.

    13F-HR 0001132708-26-000002 filed by NORTHSTAR ASSET MANAGEMENT Co
    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 33,613 shares
    Change vs previous 13F -123 shares

    3.58% of the 13F portfolio, value $16,895,574.

    13F-HR 0001132708-26-000001 filed by NORTHSTAR ASSET MANAGEMENT Co
    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 33,736 shares
    Change vs previous 13F -85 shares

    3.64% of the 13F portfolio, value $16,960,437.

    13F-HR 0001132708-25-000008 filed by NORTHSTAR ASSET MANAGEMENT Co
    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 33,821 shares
    Change vs previous 13F -15 shares

    3.78% of the 13F portfolio, value $16,429,227.

    13F-HR 0001132708-25-000007 filed by NORTHSTAR ASSET MANAGEMENT Co
    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 33,836 shares
    Change vs previous 13F +10 shares

    4.35% of the 13F portfolio, value $18,020,377.

    13F-HR 0001132708-25-000002 filed by NORTHSTAR ASSET MANAGEMENT Co
    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 33,826 shares
    Change vs previous 13F +101 shares

    3.51% of the 13F portfolio, value $15,332,649.

    13F-HR 0001132708-25-000001 filed by NORTHSTAR ASSET MANAGEMENT Co
    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 33,725 shares
    Change vs previous 13F not available

    3.56% of the 13F portfolio, value $15,522,268.

    13F-HR 0001132708-24-000006 filed by NORTHSTAR ASSET MANAGEMENT Co
    Filed (acceptance time not in the bulk data set), ingested

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