Clearfield, INC Schedule 13G passive stakes

AIGH Capital Management and affiliated entities report beneficial ownership of 1,008,469 shares, representing 7.4% of Clearfield, Inc.'s common stock.

ACK Asset Management LLC, along with its managing members Richard Meisenberg and John Reilly, has reported beneficial ownership of 710,200 shares, representing 5.1% of Clearfield, Inc.'s common stock.

The Vanguard Group has reported 0% beneficial ownership in Clearfield Inc. following an internal realignment effective January 12, 2026.

Ronald G. Roth has filed an amended Schedule 13G, disclosing a continued 10.5% beneficial ownership in Clearfield, Inc. as of December 31, 2025.

Investment adviser Mairs and Power, Inc. has reported beneficial ownership of 6.03% of Clearfield, Inc.'s common stock as of March 31, 2025.

ACK Asset Management LLC, along with its managing members Richard Meisenberg and John Reilly, has reported a collective beneficial ownership of 4.86% of Clearfield, Inc.'s common stock.

ACK Asset Management LLC, along with Richard Meisenberg and John Reilly, has disclosed a passive 5.04% beneficial ownership stake in Clearfield, Inc. as of December 31, 2024.

Ronald G. Roth has filed an amended Schedule 13G, reporting a 10.2% beneficial ownership stake in Clearfield, Inc. as of December 31, 2024, indicating a passive investment intent.