0001378140 2022-05-01 2023-04-30 0001378140 OPTT:CommonStockParValue0.001Member 2022-05-01 2023-04-30 0001378140 OPTT:SeriesAParticipatingPreferredStockPurchaseRightsMember 2022-05-01 2023-04-30 0001378140 2021-10-31 0001378140 2023-08-23 iso4217:USD shares iso4217:USD shares 0001378140 true FY 10-K/A true 2023-04-30 --04-30 2023 false 001-33417 Ocean Power Technologies, Inc. DE 22-2535818 28 ENGELHARD DRIVE SUITE B MONROE TOWNSHIP NJ 08831 (609) 730-0400 Common Stock, par value $0.001 OPTT NYSE Series A Participating Preferred Stock Purchase Rights n/a NYSE No No Yes Yes Non-accelerated Filer true false false false false 40800000 58787578 274 EisnerAmper LLP Iselin, New Jersey This Amendment No. 1 to Form 10-K (this Amendment No.1) amends the Ocean Power Technologies, Inc. (“we”, “us”, “our” or the “Company”) Annual Report on Form 10-K for the fiscal year ending April 30, 2023, as originally filed with the Securities and Exchange Commission (“SEC”) on July 28, 2023 (the “Original Filing”). We are filing this Amendment No. 1 to include the information required by Items 10 through 14 of Part III of Form 10-K. This information was previously omitted from our Original Filing in reliance on General Instruction G(3) to Form 10-K, which permits the information in the above-referenced items to be incorporated in our Form 10-K by reference to our definitive proxy statement if such statement is filed within 120 days after the end of our fiscal year ended April 30, 2023