MAIRS & POWER INC: INSP position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MAIRS & POWER INC on INSP, newest first. How the timeline and the estimate are built.

MAIRS & POWER INC held 0 INSP shares at 2026-03-31 per its 13F-HR filed 2026-05-14.

the latest 13F is the newest step

period ended2026-03-31
13F 0 shares
Change vs previous 13F -57,616 shares
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).
Exited: the 13F for this period no longer lists the position.
period ended2025-12-31
13F 57,616 shares
Change vs previous 13F -7,830 shares
0.05% of the 13F portfolio, value $5,313,924.
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).
period ended2025-09-30
13F 65,446 shares
Change vs previous 13F -2,358 shares
0.05% of the 13F portfolio, value $4,856,093.
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).
period ended2025-06-30
13F 67,804 shares
Change vs previous 13F -2,972 shares
0.09% of the 13F portfolio, value $8,798,925.
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).
period ended2025-03-31
13F 70,776 shares
Change vs previous 13F +6,105 shares
0.12% of the 13F portfolio, value $11,273,201.
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).
period ended2024-12-31
13F 64,671 shares
Change vs previous 13F +3,498 shares
0.12% of the 13F portfolio, value $11,988,710.
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).
period ended2024-09-30
13F 61,173 shares
Change vs previous 13F not available
0.12% of the 13F portfolio, value $12,910,562.
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).