ACK Asset Management LLC SEC EDGAR Filings (CIK 0001510940)

SEC EDGAR filings, ownership reports, and insider transactions for ACK Asset Management LLC.

Business address
777 West Putnam Avenue, Suite 300, Greenwich, CT, 06830
Top securities (13F)
ENS, MTRN, GVA, ATRO, WMS, JBTM, CNM, ATS, AIN, JHX, HLIO, SITE, ASTE, APOG, MBC, CTRI, CLFD, EXP, NPKI, and CTOS
Top holdings (Schedule 13G)
ATRO and CLFD
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ACK Asset Management LLC has filed 80 SEC EDGAR filings since 25 Jan 2011

Latest Filings

Recent SEC filings for ACK Asset Management LLC including SCHEDULE 13G/A, 13F-HR, N-PX and more.

Form type Document Filing Description Filing date Reporting date File number(s)
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 18 Nov 2025
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2025 30 Sep 2025 028-14060
N-PX Open N-PX document View SEC filing for N-PX 26 Aug 2025 30 Jun 2025 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Aug 2025 30 Jun 2025 028-14060
SCHEDULE 13G/A Open SCHEDULE 13G/A document View SEC filing for SCHEDULE 13G/A 13 May 2025
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 May 2025 31 Mar 2025 028-14060
SCHEDULE 13G Open SCHEDULE 13G document View SEC filing for SCHEDULE 13G 14 Feb 2025
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Feb 2025 31 Dec 2024 028-14060
SC 13G Open SC 13G document View SEC filing for SC 13G SCHEDULE 13G 12 Dec 2024
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Nov 2024 30 Sep 2024 028-14060
N-PX Open N-PX document View SEC filing for N-PX 28 Aug 2024 30 Jun 2024 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Aug 2024 30 Jun 2024 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 May 2024 31 Mar 2024 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Feb 2024 31 Dec 2023 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Nov 2023 30 Sep 2023 028-14060
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A 15 Aug 2023 30 Jun 2023 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2023 30 Jun 2023 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 12 May 2023 31 Mar 2023 028-14060
SC 13G Open SC 13G document View SEC filing for SC 13G SCHEDULE 13G 17 Feb 2023
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2023 31 Dec 2022 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2022 30 Sep 2022 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 Aug 2022 30 Jun 2022 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 May 2022 31 Mar 2022 028-14060
SC 13G Open SC 13G document View SEC filing for SC 13G SCHEDULE 13G 14 Feb 2022
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2022 31 Dec 2021 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 12 Nov 2021 30 Sep 2021 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Jul 2021 30 Jun 2021 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 May 2021 31 Mar 2021 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 12 Feb 2021 31 Dec 2020 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Nov 2020 30 Sep 2020 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Aug 2020 30 Jun 2020 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 May 2020 31 Mar 2020 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 12 Feb 2020 31 Dec 2019 028-14060
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G/A, #1 12 Feb 2020
SC 13G Open SC 13G document View SEC filing for SC 13G SCHEDULE 13G 12 Feb 2020
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A 13 Nov 2019 30 Sep 2019 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Nov 2019 30 Sep 2019 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2019 30 Jun 2019 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 May 2019 31 Mar 2019 028-14060
SC 13G/A Open SC 13G/A document View SEC filing for SC 13G/A SCHEDULE 13G (AMENDMENT NO. 1) 01 Apr 2019
SC 13G Open SC 13G document View SEC filing for SC 13G SCHEDULE 13G 12 Feb 2019
SC 13G Open SC 13G document View SEC filing for SC 13G SCHEDULE 13G 12 Feb 2019
13F-HR Open 13F-HR document View SEC filing for 13F-HR 12 Feb 2019 31 Dec 2018 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 09 Nov 2018 30 Sep 2018 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Aug 2018 30 Jun 2018 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 May 2018 31 Mar 2018 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 12 Feb 2018 31 Dec 2017 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Nov 2017 30 Sep 2017 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2017 30 Jun 2017 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 12 May 2017 31 Mar 2017 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Feb 2017 31 Dec 2016 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 10 Nov 2016 30 Sep 2016 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 Aug 2016 30 Jun 2016 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 May 2016 31 Mar 2016 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 11 Feb 2016 31 Dec 2015 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 Nov 2015 30 Sep 2015 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 11 Aug 2015 30 Jun 2015 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 May 2015 31 Mar 2015 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 12 Feb 2015 31 Dec 2014 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2014 30 Sep 2014 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 04 Aug 2014 30 Jun 2014 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 09 May 2014 31 Mar 2014 028-14060
SC 13G Open SC 13G document View SEC filing for SC 13G 19 Feb 2014
13F-HR Open 13F-HR document View SEC filing for 13F-HR 11 Feb 2014 31 Dec 2013 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Nov 2013 30 Sep 2013 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Aug 2013 30 Jun 2013 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET 13F MARCH 31, 2013 13 May 2013 31 Mar 2013 028-14060
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A ACK ASSET MANAGEMENT 12/31/2012 11 Feb 2013 31 Dec 2012 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET MANAGEMENT 12/31/2012 11 Feb 2013 31 Dec 2012 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Nov 2012 30 Sep 2012 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET 13F 2012 2Q 13 Aug 2012 30 Jun 2012 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET 13F 2012.03 14 May 2012 31 Mar 2012 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR 10 Feb 2012 31 Dec 2011 028-14060
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A ACK ASSET 13F 3Q 14 Nov 2011 30 Sep 2010 028-14060
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A ACK ASSET 13F 3QV2 14 Nov 2011 30 Sep 2011 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET 13F 3Q 14 Nov 2011 30 Sep 2011 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET 13F3Q 14 Nov 2011 30 Sep 2010 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET FORM 13F 12 Aug 2011 30 Jun 2011 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET FORM 13F 03_31_2011 02 May 2011 31 Mar 2011 028-14060
13F-HR Open 13F-HR document View SEC filing for 13F-HR ACK ASSET 13F 2010 DEC 25 Jan 2011 31 Dec 2010 028-14060

About this filer

ACK Asset Management LLC files with the SEC under CIK 0001510940. This page aggregates EDGAR filings and related ownership activity.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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