Columbia Asset Management: BRK-B position timeline

Columbia Asset Management held 33,730 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-07-21.

the latest 13F is the newest step

1. period ended2026-06-30

   13F 33,730 shares

   Change vs previous 13F +33,730 shares

   2.93% of the 13F portfolio, value $16,878,155.

   13F-HR 0002085853-26-000792 filed by Columbia Asset Management
   Filed 2026-07-21 (acceptance time not in the bulk data set), ingested 2026-10-06 09:57:27 UTC

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

2. period ended2026-03-31

   13F 0 shares

   Change vs previous 13F -37,270 shares

   13F-HR 0002085853-26-000430 filed by Columbia Asset Management
   Filed 2026-04-21 (acceptance time not in the bulk data set), ingested 2026-10-06 09:58:43 UTC

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

   Exited: the 13F for this period no longer lists the position.

3. period ended2025-12-31

   13F 37,270 shares

   Change vs previous 13F +37,270 shares

   3.33% of the 13F portfolio, value $18,733,766.

   13F-HR 0002085853-26-000122 filed by Columbia Asset Management
   Filed 2026-01-28 (acceptance time not in the bulk data set), ingested 2026-10-07 03:01:36 UTC

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

4. period ended2024-12-31

   13F 0 shares

   Change vs previous 13F -38,506 shares

   13F-HR 0001667731-25-000251 filed by Columbia Asset Management
   Filed 2025-02-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:55 UTC

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

   Exited: the 13F for this period no longer lists the position.

5. period ended2024-09-30

   13F 38,506 shares

   Change vs previous 13F not available

   3.09% of the 13F portfolio, value $17,723,000.

   13F-HR 0001585047-24-000004 filed by Columbia Asset Management
   Filed 2024-11-12 (acceptance time not in the bulk data set), ingested 2026-10-07 18:26:56 UTC

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