ACK Asset Management LLC - 13D/13G Filings

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
Time period
Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-04-15
1:07 pm
Purchase
2026-02-2013GCLEARFIELD IN
CLFD
ACK Asset Management LLC710,200
5.100%
23,000increase
(+3.35%)
Filing
History
2025-11-18
3:49 pm
Sale
2025-09-3013GASTRONICS CORP
ATRO
ACK Asset Management LLC1,476,000
4.000%
-996,000decrease
(-40.29%)
Filing
History
2025-05-13
5:28 pm
Sale
2025-03-3113GCLEARFIELD IN
CLFD
ACK Asset Management LLC687,200
4.900%
-32,800decrease
(-4.56%)
Filing
History
2025-02-14
12:46 pm
Purchase
2024-12-3113GCLEARFIELD IN
CLFD
ACK Asset Management LLC720,000
5.040%
720,000increase
(New Position)
Filing
History
2024-12-12
5:27 pm
Purchase
2024-09-3013GASTRONICS CORP
ATRO
ACK Asset Management LLC2,472,000
6.940%
1,056,000increase
(+74.58%)
Filing
History
2023-02-17
3:57 pm
Purchase
2022-12-3113GALLIENT INC.
ALNT
ACK Asset Management LLC807,400
5.100%
807,400increase
(New Position)
Filing
2022-02-14
1:19 pm
Purchase
2021-11-2613GLUNA INNOVATIONS INC
LUNA
ACK Asset Management LLC1,832,647
5.730%
1,832,647increase
(New Position)
Filing
History