ACK Asset Management LLC

13D and 13G Filings

Investors who own more than 5% of a class must file a Schedule 13D or 13G. The latest filing for each security since 12/18/2024, newest first.

Issuer % of Class Filed
Clearfield, Inc. 13G
CLFD · 18482P103
5.1% 4/15/2026
Event 2/20/2026
Astronics Corp 13G/A
ATRO · 046433108
4.0% 11/18/2025
Event 9/30/2025