MASON CAPITAL MANAGEMENT LLC reports

Company location
New York, NY
MASON CAPITAL MANAGEMENT LLC has filed 222 SEC EDGAR filings since 14 Feb 2003

SEC filing history

Showing 1-25 of 144 matching filings.

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25
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1
13F-HR File 028-10413

13F-HR filing

Filing date
15 May 2026
Reporting date
31 Mar 2026
SEC evidence
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SCHEDULE 13G

SCHEDULE 13G filing

Filing date
06 Apr 2026
Reporting date
Not listed
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
17 Feb 2026
Reporting date
31 Dec 2025
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SCHEDULE 13G

SCHEDULE 13G filing

Filing date
29 Jan 2026
Reporting date
Not listed
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Nov 2025
Reporting date
30 Sep 2025
SEC evidence
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N-PX File 028-10413

N-PX filing

Filing date
26 Aug 2025
Reporting date
30 Jun 2025
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Aug 2025
Reporting date
30 Jun 2025
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
15 May 2025
Reporting date
31 Mar 2025
SEC evidence
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DFAN14A

DFAN14A

Filing date
15 May 2025
Reporting date
Not listed
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Feb 2025
Reporting date
31 Dec 2024
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Nov 2024
Reporting date
30 Sep 2024
SEC evidence
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SC 13G/A

ATS CORPORATION

Filing date
13 Nov 2024
Reporting date
Not listed
SEC evidence
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N-PX File 028-10413

N-PX filing

Filing date
28 Aug 2024
Reporting date
30 Jun 2024
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Aug 2024
Reporting date
30 Jun 2024
SEC evidence
Open document Open filing
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13F-HR File 028-10413

13F-HR filing

Filing date
15 May 2024
Reporting date
31 Mar 2024
SEC evidence
Open document Open filing
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13F-HR File 028-10413

13F-HR filing

Filing date
15 Feb 2024
Reporting date
31 Dec 2023
SEC evidence
Open document Open filing
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SC 13G

ATS CORPORATION

Filing date
14 Feb 2024
Reporting date
Not listed
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Nov 2023
Reporting date
30 Sep 2023
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Aug 2023
Reporting date
30 Jun 2023
SEC evidence
Open document Open filing
Next action
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SC 13D/A

PSQ HOLDINGS, INC.

Filing date
21 Jul 2023
Reporting date
Not listed
SEC evidence
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SC 13D/A

COLOMBIER ACQUISITION CORP.

Filing date
19 Jul 2023
Reporting date
Not listed
SEC evidence
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SC 13D

COLOMBIER ACQUISITION CORP.

Filing date
26 Jun 2023
Reporting date
Not listed
SEC evidence
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13F-HR File 028-10413

13F-HR filing

Filing date
15 May 2023
Reporting date
31 Mar 2023
SEC evidence
Open document Open filing
Next action
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Feb 2023
Reporting date
31 Dec 2022
SEC evidence
Open document Open filing
Next action
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13F-HR File 028-10413

13F-HR filing

Filing date
14 Nov 2022
Reporting date
30 Sep 2022
SEC evidence
Open document Open filing
Next action
Verify source filing
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