Investor Mairs & Power Inc
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Mairs & Power Inc . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

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Date Form Target Prev
Shares		 Current
Shares		 Change
(Percent)		 Ownership
(Percent)		 Change
(Percent)
2025-05-15 13G/A TNC / Tennant Company 1,227,944 1,423,520
2025-05-15 13G CLFD / Clearfield, Inc. 852,255
2024-02-14 13G/A TNC / Tennant Company 1,632,438 1,227,944
2023-02-14 13G/A FUL / H.B. Fuller Company 2,725,299 2,475,767
2023-02-14 13G/A TNC / Tennant Company 1,426,102 1,632,438
2023-02-14 13G/A DGII / Digi International Inc. 2,558,384 1,324,118
2022-02-14 13G/A FUL / H.B. Fuller Company 2,956,228 2,725,299
2022-02-14 13G/A FUL / H.B. Fuller Company 2,956,228 1,683,174
2022-02-14 13G/A NVEC / NVE Corporation 379,453 10,999
2022-02-14 13G/A DGII / Digi International Inc. 2,622,835 2,558,384
2021-02-16 13G/A FUL / H.B. Fuller Company 2,777,906 2,956,228
2021-02-16 13G/A NVEC / NVE Corporation 425,553 379,453
2021-02-16 13G/A FUL / H.B. Fuller Company 2,777,906 1,648,020
2021-02-16 13G DGII / Digi International Inc. 2,622,835
2020-02-14 13G/A NVEC / NVE Corporation 365,305 425,553
2020-02-14 13G/A TNC / Tennant Company 1,271,238 1,426,102
2020-02-14 13G/A FUL / H.B. Fuller Company 2,645,827 2,777,906
2019-02-14 13G/A CRAY / Cray, Inc. 2,670,857 1,475,067
2019-02-14 13G/A FUL / H.B. Fuller Company 3,057,749 2,645,827
2019-02-14 13G/A BMI / Badger Meter, Inc. 1,844,023 1,345,772
2019-02-14 13G/A NVEC / NVE Corporation 414,754 365,305
2019-02-14 13G/A TNC / Tennant Company 1,114,095 1,271,238
2018-02-14 13G/A CRAY / Cray, Inc. 3,149,271 2,670,857
2018-02-14 13G/A FUL / H.B. Fuller Company 3,579,297 3,057,749
2018-02-14 13G/A BMI / Badger Meter, Inc. 2,109,514 1,844,023
2018-02-14 13G/A NVEC / NVE Corporation 510,631 414,754
2018-02-14 13G/A GGG / Graco Inc. 3,306,331 7,089,419
2018-02-14 13G/A BMS / Bemis Co., Inc. 4,715,020 4,348,591
2018-02-14 13G TNC / Tennant Company 1,114,095
2017-02-14 13G BMS / Bemis Co., Inc. 4,715,020
2017-02-14 13G/A FUL / H.B. Fuller Company 3,454,392 3,579,297
2017-02-14 13G/A GGG / Graco Inc. 2,863,637 3,306,331
2017-02-14 13G/A NVEC / NVE Corporation 528,466 510,631
2017-02-14 13G/A BMI / Badger Meter, Inc. 1,175,581 2,109,514
2017-02-14 13G/A CRAY / Cray, Inc. 2,454,956 3,149,271
2016-09-09 13G/A US5537771033 / MTS Systems Corporation 1,579,183 98,865
2016-02-12 13G/A FUL / H.B. Fuller Company 3,454,392
2016-02-12 13G GGG / Graco Inc. 2,863,637
2016-02-12 13G/A US5537771033 / MTS Systems Corporation 1,579,183
2016-02-12 13G/A NVEC / NVE Corporation 528,466
2016-02-12 13G/A TTC / The Toro Company 2,161,262
2016-02-12 13G/A BMI / Badger Meter, Inc. 1,175,581
2016-02-12 13G/A CRAY / Cray, Inc. 2,454,956
2015-02-13 13G/A NVEC / NVE Corporation 664,699
2015-02-13 13G/A TTC / The Toro Company 2,886,100
2015-02-13 13G/A US5537771033 / MTS Systems Corporation 1,657,340
2015-02-13 13G/A FUL / H.B. Fuller Company 3,387,972
2015-02-13 13G CRAY / Cray, Inc. 2,324,885
2015-02-13 13G/A SRDX / Surmodics, Inc. 40,790
2015-02-13 13G/A BMI / Badger Meter, Inc. 1,257,680
2014-02-06 13G/A FUL / H.B. Fuller Company 3,418,429
2014-02-06 13G/A US5537771033 / MTS Systems Corporation 1,823,382
2014-02-06 13G/A NVEC / NVE Corporation 677,264
2014-02-06 13G/A TTC / The Toro Company 3,204,583
2014-02-06 13G BMI / Badger Meter, Inc. 793,912
2014-02-06 13G/A DAKT / Daktronics, Inc. 607,347
2014-02-06 13G/A SRDX / Surmodics, Inc. 759,190
2013-04-10 13G/A NVEC / NVE Corporation 534,274
2013-02-11 13G/A FUL / H.B. Fuller Company 3,792,879
2013-02-11 13G/A US5537771033 / MTS Systems Corporation 1,819,276
2013-02-11 13G NVEC / NVE Corporation 365,490
2013-02-11 13G/A TTC / The Toro Company 3,233,343
2013-02-11 13G/A 0
2013-02-11 13G/A DAKT / Daktronics, Inc. 2,503,262
2013-02-11 13G/A SRDX / Surmodics, Inc. 762,845
2012-02-10 13G/A FUL / H.B. Fuller Company 3,927,453
2012-02-10 13G/A GGG / Graco Inc. 2,900,064
2012-02-10 13G/A US5537771033 / MTS Systems Corporation 1,809,438
2012-02-10 13G/A TTC / The Toro Company 1,671,472
2012-02-10 13G/A MTOX / 580,605
2012-02-10 13G DAKT / Daktronics, Inc. 2,114,222