Chesley Taft & Associates LLC: MBB position timeline

Chesley Taft & Associates LLC held 2,665 MBB shares at 2026-06-30 per its 13F-HR filed 2026-07-08.

the latest 13F is the newest step

1. period ended2026-06-30

   13F 2,665 shares

   Change vs previous 13F +45 shares

   0.01% of the 13F portfolio, value $251,896.

   13F-HR 0001164632-26-000004 filed by Chesley Taft & Associates LLC
   Filed 2026-07-08 (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 2,620 shares

   Change vs previous 13F +217 shares

   0.01% of the 13F portfolio, value $248,769.

   13F-HR 0001164632-26-000002 filed by Chesley Taft & Associates LLC
   Filed 2026-04-13 (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 2,403 shares

   Change vs previous 13F +242 shares

   0.01% of the 13F portfolio, value $228,814.

   13F-HR 0001164632-26-000001 filed by Chesley Taft & Associates LLC
   Filed 2026-01-14 (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 2,161 shares

   Change vs previous 13F 0 shares

   0.01% of the 13F portfolio, value $205,619.

   13F-HR 0001085146-25-005836 filed by Chesley Taft & Associates LLC
   Filed 2025-10-08 (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 2,161 shares

   Change vs previous 13F -280 shares

   0.01% of the 13F portfolio, value $202,896.

   13F-HR 0001085146-25-003693 filed by Chesley Taft & Associates LLC
   Filed 2025-07-09 (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 2,441 shares

   Change vs previous 13F -580 shares

   0.01% of the 13F portfolio, value $228,917.

   13F-HR 0001085146-25-002016 filed by Chesley Taft & Associates LLC
   Filed 2025-04-10 (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 3,021 shares

   Change vs previous 13F +450 shares

   0.01% of the 13F portfolio, value $276,965.

   13F-HR 0001085146-25-000305 filed by Chesley Taft & Associates LLC
   Filed 2025-01-17 (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 2,571 shares

   Change vs previous 13F not available

   0.01% of the 13F portfolio, value $246,328.

   13F-HR 0001085146-24-004667 filed by Chesley Taft & Associates LLC
   Filed 2024-10-07 (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).