UNITED STATES SECURITIES AND EXCHANGE COMMISSION Delaware Washington, D.C. 20549 Form 10-K [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended April 30, 2021 or [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . Commission File Number 001-33417 Ocean Power Technologies, Inc. (State or other jurisdiction of incorporation or organization) 22-2535818 (I.R.S. Employer Iden ...