GARDNER RUSSO & QUINN LLC: BRK-A position timeline

GARDNER RUSSO & QUINN LLC held 1,432 BRK-A shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

1. period ended2026-06-30

   13F 1,432 shares

   Change vs previous 13F -28 shares

   12.01% of the 13F portfolio, value $1,072,353,200.

   13F-HR 0000860643-26-000005 filed by GARDNER RUSSO & QUINN LLC
   Filed 2026-08-13 (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 1,460 shares

   Change vs previous 13F -28 shares

   12.34% of the 13F portfolio, value $1,048,484,400.

   13F-HR 0000860643-26-000003 filed by GARDNER RUSSO & QUINN LLC
   Filed 2026-05-13 (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).

3. period ended2025-12-31

   13F 1,488 shares

   Change vs previous 13F -53 shares

   12.12% of the 13F portfolio, value $1,123,142,400.

   13F-HR 0000860643-26-000001 filed by GARDNER RUSSO & QUINN LLC
   Filed 2026-02-12 (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 ended2025-09-30

   13F 1,541 shares

   Change vs previous 13F -83 shares

   12.46% of the 13F portfolio, value $1,162,222,200.

   13F-HR 0000860643-25-000007 filed by GARDNER RUSSO & QUINN LLC
   Filed 2025-11-12 (acceptance time not in the bulk data set), ingested 2026-10-07 03:02:25 UTC

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

5. period ended2025-06-30

   13F 1,624 shares

   Change vs previous 13F -33 shares

   12.58% of the 13F portfolio, value $1,183,571,200.

   13F-HR 0000860643-25-000004 filed by GARDNER RUSSO & QUINN LLC
   Filed 2025-08-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:23:11 UTC

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

6. period ended2025-03-31

   13F 1,657 shares

   Change vs previous 13F -212 shares

   14.83% of the 13F portfolio, value $1,323,017,731.

   13F-HR 0000860643-25-000003 filed by GARDNER RUSSO & QUINN LLC
   Filed 2025-05-13 (acceptance time not in the bulk data set), ingested 2026-10-07 18:25:06 UTC

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

7. period ended2024-12-31

   13F 1,869 shares

   Change vs previous 13F -176 shares

   14.39% of the 13F portfolio, value $1,272,639,480.

   13F-HR 0000860643-25-000001 filed by GARDNER RUSSO & QUINN LLC
   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).

8. period ended2024-09-30

   13F 2,045 shares

   Change vs previous 13F not available

   14.51% of the 13F portfolio, value $1,413,463,100.

   13F-HR 0000860643-24-000007 filed by GARDNER RUSSO & QUINN LLC
   Filed 2024-11-13 (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).