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HDRN SEC Filings

SEC filings for HDRN. Annual and quarterly reports, 8-K events, Form 4 insider filings and 13D/G stake disclosures.

All10-K10-Q8-KProxyForm 413D/GLast 12 months
FormFiledAccession
4Williams Eric ScottEVP of EngineeringSep 10, 2026EDGAR
8-KSep 8, 2026EDGAR
4Canavan Kenneth Jr.Chief Operating OfficerSep 4, 2026EDGAR
4Shukla RahulChief Financial OfficerSep 4, 2026EDGAR
4Katz Avi SChairmanSep 4, 2026EDGAR
SC 13G/AamendedMeteora Capital, LLCAug 14, 2026EDGAR
SC 13G/AamendedTenor Capital Management Company, L.P and 2 other reporting personsAug 14, 2026EDGAR
SC 13G/AamendedHighbridge Capital Management, LLCAug 14, 2026EDGAR
SC 13G/AamendedAristeia Capital, L.L.C.Aug 14, 2026EDGAR
SC 13G/AamendedAQR Capital Management Holdings, LLC and 2 other reporting personsAug 14, 2026EDGAR
4Horowitz RaananAug 13, 2026EDGAR
4Zuckerman AdrianAug 13, 2026EDGAR
4Lewis Robert JamesAug 13, 2026EDGAR
4TIMM BRYANAug 13, 2026EDGAR
4Hunter Ralph L. JRAug 13, 2026EDGAR
4Katz Avi SChairmanAug 13, 2026EDGAR
4Dinu RalucaAug 13, 2026EDGAR
SC 13G/AamendedMizuho Financial Group, Inc.Aug 13, 2026EDGAR
SC 13G/AamendedTD Group US Holdings LLC and 3 other reporting personsAug 12, 2026EDGAR
8-KAug 12, 2026EDGAR
10-QAug 12, 2026EDGAR
8-KAug 10, 2026EDGAR
SC 13G/AamendedW. R. Berkley Corporation and 1 other reporting personAug 6, 2026EDGAR
8-KJun 17, 2026EDGAR
8-KJun 12, 2026EDGAR
8-KJun 5, 2026EDGAR
8-KMay 29, 2026EDGAR
4Dinu RalucaMay 28, 2026EDGAR
8-KMay 27, 2026EDGAR
SC 13GTD SECURITIES (USA) LLC and 3 other reporting personsMay 15, 2026EDGAR
SC 13GMeteora Capital, LLCMay 15, 2026EDGAR
SC 13G/AamendedHarraden Circle Investments, LLC and 7 other reporting personsMay 14, 2026EDGAR
SC 13GMizuho Financial Group, Inc.May 14, 2026EDGAR
8-KMay 11, 2026EDGAR
SC 13G/AamendedTHE GOLDMAN SACHS GROUP, INC. and 1 other reporting personMay 8, 2026EDGAR
8-KMay 8, 2026EDGAR
SC 13GW. R. Berkley Corporation and 1 other reporting personMay 7, 2026EDGAR
8-KMay 7, 2026EDGAR
10-QMay 6, 2026EDGAR
8-KMay 1, 2026EDGAR
8-KApr 20, 2026EDGAR
10-KMar 6, 2026EDGAR
SC 13GHighbridge Capital Management, LLCFeb 17, 2026EDGAR
SC 13G/AamendedMAP 136 Segregated Portfolio, a segregated portfolio of LMA SPC and 1 other reporting personFeb 17, 2026EDGAR
SC 13G/AamendedAristeia Capital, L.L.C.Feb 17, 2026EDGAR
SC 13G/AamendedRobin Shah and 2 other reporting personsFeb 13, 2026EDGAR
SC 13GHarraden Circle Investors GP, LP and 7 other reporting personsFeb 13, 2026EDGAR
SC 13G/AamendedRamya RaoFeb 13, 2026EDGAR
SC 13G/AamendedAQR Arbitrage, LLC and 2 other reporting personsFeb 12, 2026EDGAR
8-KFeb 4, 2026EDGAR
SC 13G/AamendedBruce M. Kallins and 5 other reporting personsJan 14, 2026EDGAR
8-KJan 6, 2026EDGAR
8-KNov 26, 2025EDGAR
SC 13G/AamendedMAP 136 Segregated Portfolio, a segregated portfolio of LMA SPC and 1 other reporting personNov 14, 2025EDGAR
SC 13G/AamendedHuang Rich and 1 other reporting personNov 14, 2025EDGAR
10-QNov 14, 2025EDGAR
SC 13G/AamendedKepos Capital LP and 1 other reporting personNov 13, 2025EDGAR

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Source: SEC EDGAR.