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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Delaware Tidewater Inc. ( Exact name of registrant as specified in its charter ) ( State of incorporation ) 6002 Rogerdale Road , Suite 600 Houston , Texas Commission file number : 1-6311 ( Address of principal executive offices ) T 080 Title of each class Common Stock , $ 0.001 par value per share Preferred stock purchase rights Series A Warrants to purchase shares of common stock Series B Warrants to purchase shares of common stock Warrants to purchase shares of common stock 72-0487776 Registrant's telephone number , including area code : ( 713 ) 470-5300 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) TDW N / A TDW.WS.A TDW.WS.B TDW.WS ( I.R.S. Employer Identification No. ) 77072 ( Zip Code ) Name of each exchange on which registered New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange NYSE American Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( § 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes > No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , ” and “ emerging growth company " in Rule 12b - 2 of the Exchange Act . Large accelerated filer No | Accelerated filer