MAIRS & POWER INC: BRK-B position timeline

MAIRS & POWER INC held 23,590 BRK-B shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

1. period ended2026-06-30

   13F 23,590 shares

   Change vs previous 13F -339 shares

   0.11% of the 13F portfolio, value $11,804,200.

   13F-HR 0001172661-26-003496 filed by MAIRS & POWER INC
   Filed 2026-08-14 (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 23,929 shares

   Change vs previous 13F -928 shares

   0.12% of the 13F portfolio, value $11,466,777.

   13F-HR 0001172661-26-001819 filed by MAIRS & POWER INC
   Filed 2026-05-14 (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 24,857 shares

   Change vs previous 13F -522 shares

   0.12% of the 13F portfolio, value $12,494,371.

   13F-HR 0001172661-26-001057 filed by MAIRS & POWER INC
   Filed 2026-02-17 (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 25,379 shares

   Change vs previous 13F -713 shares

   0.12% of the 13F portfolio, value $12,759,038.

   13F-HR 0001172661-25-004985 filed by MAIRS & POWER INC
   Filed 2025-11-14 (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 26,092 shares

   Change vs previous 13F +1,488 shares

   0.13% of the 13F portfolio, value $12,674,711.

   13F-HR 0001172661-25-003391 filed by MAIRS & POWER INC
   Filed 2025-08-14 (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 24,604 shares

   Change vs previous 13F -1,389 shares

   0.14% of the 13F portfolio, value $13,103,598.

   13F-HR 0001172661-25-002089 filed by MAIRS & POWER INC
   Filed 2025-05-15 (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 25,993 shares

   Change vs previous 13F +946 shares

   0.11% of the 13F portfolio, value $11,782,107.

   13F-HR 0001172661-25-000936 filed by MAIRS & POWER INC
   Filed 2025-02-14 (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 25,047 shares

   Change vs previous 13F not available

   0.11% of the 13F portfolio, value $11,528,132.

   13F-HR 0001172661-24-004776 filed by MAIRS & POWER INC
   Filed 2024-11-14 (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).