Mairs and Power, Inc.

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

11

Stocks Covered

5

Latest Filing

Feb 17, 2026

Filings

TNC

TENNANT CO

SC 13G/A · Feb 17, 2026

5.9%

1.1M shares

TNC

TENNANT COMPANY

SC 13G/A · May 15, 2025

7.6%

1.4M shares

CLFD

CLEARFIELD, INC.

SC 13G · May 15, 2025

6.0%

852K shares

TNC

Tennant Company

SC 13G/A · Feb 14, 2024

6.6%

1.2M shares

TNC

Tennant Company

SC 13G/A · Feb 14, 2023

8.8%

1.6M shares

FUL

H.B. Fuller Company

SC 13G/A · Feb 14, 2023

4.6%

2.5M shares

DGII

DIGI International Inc.

SC 13G/A · Feb 14, 2023

3.7%

1.3M shares

FUL

Tennant Company

SC 13G/A · Feb 14, 2022

9.1%

1.7M shares

NVEC

NVE Corporation

SC 13G/A · Feb 14, 2022

0.2%

11K shares

FUL

H.B. Fuller Company

SC 13G/A · Feb 14, 2022

5.3%

2.7M shares

DGII

DIGI International Inc.

SC 13G/A · Feb 14, 2022

7.4%

2.6M shares