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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 ( MARK ONE ) 冈 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended April 3 , 2021 OR FORM 10 - K TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Title of each class Commission file number : 1-12696 P Delaware ( State or other jurisdiction of incorporation or organization ) COMMON STOCK , $ 0.01 PAR VALUE poly Plantronics , Inc. ( Exact name of registrant as specified in its charter ) to 345 Encinal Street Santa Cruz , California 95060 ( Address of principal executive offices ) ( zip code ) ( 831 ) 420-3002 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol PLT ( I.R.S. Employer Identification Number ) 77-0207692 Name of each exchange on which registered New York Stock Exchange Securities registered pursuant to Section 12 ( g ) of the Act : NONE ( Title of Class ) Indicate by check mark if the Registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act .