Significant Ownership of ACK Asset Management LLC

Signature - Title
Andres Aguirre - CCO
Location
Greenwich, CT
Summary
This page shows a list of all the recent SCHEDULE 13D/G filings made by ACK Asset Management LLC.

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Significant Ownership of ACK Asset Management LLC

Sym Company Class Ownership Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
CLFD Clearfield, Inc. Common Stock, par value $0.01 Per Share 4.9% $17,619,808 -$840,992 687,200 -4.6% ACK Asset Management LLC 31 Mar 2025
ATRO ASTRONICS CORP Common Stock 4% $56,862,900 1,230,000 ACK Asset Management LLC 30 Sep 2025

Schedules 13D/G Reported by ACK Asset Management LLC:

Sym Target Class Ownership Change Current Shares Change Value Reporting name Form Report Period Filing Date
* An asterisk sign (*) next to the price indicates that the price is likely invalid.