SCHEDULE 13G 0001070134 XXXXXXXX LIVE Common Stock, $0.01 par value 03/31/2025 0000796505 CLEARFIELD, INC. 18482P103 7050 Winnetka Avenue North Suite 100 Brooklyn Park MN 55428 Rule 13d-1(b) Mairs and Power, Inc. MN 851215.00 0.00 852255.00 0.00 852255.00 N 6.03 IA CLEARFIELD, INC. 7050 Winnetka Avenue North, Suite 100, Brooklyn Park, MN 55428 Mairs and Power, Inc. 30 East 7th Street, Suite 2500, St. Paul, MN 55101 Minnesota N IA 852,255 6.03% 851,215 0 852,255 0 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Mairs and Power, Inc. Robert W. Mairs 05/15/2025