MAIRS & POWER INC

13D and 13G Filings

Investors who own more than 5% of a class must file a Schedule 13D or 13G. The latest filing for each security since 12/18/2024, newest first.

Issuer % of Class Filed
Tennant Company 13G/A
TNC · 880345103
4.4% 5/13/2026
Event 3/31/2026
Clearfield, Inc. 13G
CLFD · 18482P103
6.0% 5/15/2025
Event 3/31/2025