Corporate Governance Board of Directors Management Team Sustainability Financials Quarterly Results SEC Filings Stock Senior Notes Common Stock Warrants Tax Documents Dividends Press Releases Events and Presentations Company Reports Annual Reports Sustainability Reports Climate-Related Analysis Reports Contact SEC Filings Home / Investors / Financials / SEC Filings NASDAQ: CHKOTCPK: CHKAQYearCalendar Year 2021Calendar Year 2020ViewAll FilingsQuarterly FilingsCurrent FilingsRegistration StatementsSection 16OtherFormDescriptionDateFormat10-QQuarterly report which provides a continuing view of a company's financial positionNov 9, 2020Open Quarterly report which provides a continuing view of a company's financial position in HTML.Open Quarterly report which provides a continuing view of a company's financial position in DOC file.Open Quarterly report which provides a continuing view of a company's financial position in PDF file.Open Quarterly report which provides a continuing view of a company's financial position in XLS file.Open Quarterly report which provides a continuing view of a company's financial position in XBLR Viewer.Open Quarterly report which provides a continuing view of a company's financial position in XBLR file.10-QQuarterly report which provides a continuing view of a company's financial positionAug 10, 2020Open Quarterly report which provides a continuing view of a company's financial position in HTML.Open Quarterly report which provides a continuing view of a company's financial position in DOC file.Open Quarterly report which provides a continuing view of a company's financial position in PDF file.Open Quarterly report which provides a continuing view of a company's financial position in XLS file.Open Quarterly report which provides a continuing view of a company's financial position in XBLR Viewer.Open Quarterly report which provides a continuing view of a company's financial position in XBLR file.