Clearfield, Inc.
A maker of plug-and-play fiber broadband gear, Clearfield builds the enclosures, optical components, and access terminals that bring high-speed internet to homes, businesses, and cell sites across North America. Its roots reach back to 1979, when it began as an optics firm called APA; in 2008 it rebranded as Clearfield to focus on fiber, a name its then-CEO said was chosen to signal designs that are creative yet practical and craft-friendly. Its FieldSmart, WaveSmart, and FieldShield products are the quiet hardware behind many fiber networks.
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| Orin Hirschman | 13GPassive | 7.4% | 1.01M | Jul 27, 2026 |
| AIGH Capital Management LLC | 13GPassive | 7.4% | 1.01M | Jul 27, 2026 |
| ACK Asset Management LLC | 13GPassive | 5.1% | 710.2K | Apr 15, 2026 |
| Richard Meisenberg | 13GPassive | 5.1% | 710.2K | Apr 15, 2026 |
| John Reilly | 13GPassive | 5.1% | 710.2K | Apr 15, 2026 |
| The Vanguard Group | 13G/APassive | 0% | 0 | Mar 26, 2026 |
| Ronald G. Roth | 13G/APassive | 10.5% | 1.46M | Feb 13, 2026 |
| Mairs and Power, Inc. | 13GPassive | 6.03% | 852.3K | May 15, 2025 |