Sec Form 4 Filing - HAMMANN GREGGORY C @ PLANTRONICS INC /CA/ - 2017-02-15

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person HAMMANN GREGGORY C 2. Issuer Name and Ticker or Trading Symbol PLANTRONICS INC /CA/ [ PLT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 345 ENCINAL STREET 3. Date of Earliest Transaction (MM/DD/YY) 02/15/2017 (Street) SANTA CRUZ, CA95060 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price COMMON STOCK 02/15/2017 S 100 D $ 54.01 16,384 D COMMON STOCK 02/15/2017 M 100 A $ 34.02 16,484 D COMMON STOCK 02/15/2017 S 100 D $ 53.95 16,384 D COMMON STOCK 02/15/2017 M 311 A $ 34.02 16,695 D COMMON STOCK 02/15/2017 S 311 D $ 53.85 16,384 D COMMON STOCK 02/15/2017 M 100 A $ 34.02 16,484 D COMMON STOCK 02/15/2017 S 100 D $ 53.8 16,384 D COMMON STOCK 02/15/2017 M 100 A $ 34.02 16,484 D COMMON STOCK 02/15/2017 S 100 D $ 53.83 16,384 D COMMON STOCK 02/15/2017 M 89 A $ 34.02 16,473 D COMMON STOCK 02/15/2017 S 89 D $ 53.89 16,384 D COMMON STOCK 02/15/2017 M 100 A $ 34.02 16,484 D COMMON STOCK 02/15/2017 S 100 D $ 54.23 16,384 D COMMON STOCK 02/15/2017 M 100 A $ 34.02 16,484 D COMMON STOCK 02/15/2017 S 100 D $ 54.33 16,384 D COMMON STOCK 02/15/2017 M 100 A $ 34.02 16,484 D COMMON STOCK 02/15/2017 S 100 D $ 54.37 16,384 D COMMON STOCK 02/15/2017 M 200 A $ 34.02 16,584 D COMMON STOCK 02/15/2017 S 200 D $ 54.32 16,384 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Non-Qualified Stock Option (right to buy) $ 30.21 02/15/2017 M 344 07/27/2011( 1 ) 07/27/2017 COMMON STOCK 344 $ 54.28 31 D Non-Qualified Stock Option (right to buy) $ 30.21 02/15/2017 M 31 07/27/2011( 1 ) 07/27/2017 COMMON STOCK 31 $ 54.25 0 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 15 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 15 $ 54.26 2,985 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 400 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 400 $ 54.2525 2,585 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 72 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 72 $ 54.29 2,513 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 54.21 2,413 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 394 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 394 $ 54.2 2,019 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 6 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 6 $ 54.22 2,013 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 413 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 413 $ 54.24 1,600 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 54.07 1,500 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 54.12 1,400 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 54.03 1,300 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 54.01 1,200 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 53.95 1,100 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 311 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 311 $ 53.85 789 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 53.8 689 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 53.83 589 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 89 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 89 $ 53.89 500 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 54.23 400 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 54.33 300 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 100 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 100 $ 54.37 200 D Non-Qualified Stock Option (right to buy) $ 34.02 02/15/2017 M 200 08/05/2012( 1 ) 08/05/2018 COMMON STOCK 200 $ 54.32 0 D Non-Qualified Stock Option (right to buy) $ 36.8 02/15/2017 M 4,153 08/10/2013( 1 ) 08/10/2019 COMMON STOCK 4,153 $ 54.25 85 D Non-Qualified Stock Option (right to buy) $ 36.8 02/15/2017 M 85 08/10/2013( 1 ) 08/10/2019 COMMON STOCK 85 $ 54.26 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other HAMMANN GREGGORY C 345 ENCINAL STREET SANTA CRUZ, CA95060 X Signatures By: Courtney Bottger, Attorney-in-fact For: Greggory C. Hammann 02/16/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This option shall become exercisable in installments cumulatively with respect to twenty-five percent (25%) of the Optioned Stock one year after the date of grant and as to an additional six and one-quarter percent (6.25%) of the Optioned Stock each three months thereafter, if on such dates Optionee has remained in Continuous Status as a Director, so that one hundred percent (100%) of the Optioned Stock shall be exercisable four years after the date of grant.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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