FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person *   Warren Timothy 2. Date of Event Requiring Statement (Month/Day/Year) 02/06/2018 3. Issuer Name and Ticker or Trading Symbol HARMONIC INC [HLIT] (Last) (First) (Middle) 4300 NORTH FIRST STREET 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP, Video Products 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) SAN JOSE, CA 95134 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 Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 239,581 D Â

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option/Right to Buy	12/13/2014(1)	12/13/2020	Common Stock	25,000	$ 6.67	D	Â
Stock Option/Right to Buy	02/15/2015(2)	03/14/2021	Common Stock	30,000	$ 6.49	D	Â
Stock Option/Right to Buy	02/15/2016(2)	03/13/2022	Common Stock	12,000	$ 7.58	D	Â
Restricted Stock Units	02/15/2016(3)	02/15/2018	Common Stock	2,400	$ 0	D	Â
Stock Option/Right to Buy	02/15/2017(4)	03/24/2023	Common Stock	45,000	$ 3.23	D	Â
Restricted Stock Units	02/15/2017(5)	02/15/2018	Common Stock	2,250	$ 0	D	Â
Restricted Stock Units	08/01/2017(6)	08/01/2018	Common Stock	6,250	$ 0	D	Â
Restricted Stock Units	02/15/2018(7)	02/15/2019	Common Stock	50,000	$ 0	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Warren Timothy 4300 NORTH FIRST STREET SAN JOSE, CA 95134	Â	Â	  SVP, Video Products	Â

Signatures

/s/ Laura Donovan By Attorney-in-Fact: Laura Donovan		02/15/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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).
(1)	Fifty percent of the Shares subject to the Option vested twelve months after the Vesting Commencement Date, and one twenty fourth of the Shares subject to the Option vested monthly thereafter.
(2)	Twenty-five percent of the Shares subject to the Option vested twelve months after the Vesting Commencement Date, and one forty eighth of the Shares subject to the Option vests monthly thereafter.
(3)	Forty percent of the shares subject to the restricted stock units vested on February 15, 2016, and fifteen percent of the restricted stock units are scheduled to vest semi-annually thereafter so as to be 100% vested on February 15, 2018.
(4)	Thirty three percent of the Shares subject to the Option vested twelve months after the Vesting Commencement Date, and one thirty sixth of the Shares subject to the Option are scheduled to vest monthly thereafter.
(5)	Fifty percent of the shares subject to the restricted stock units vested on February 15, 2017, and twenty five percent of the restricted stock units are scheduled to vest quarterly thereafter so as to be 100% vested on February 15, 2018.
(6)	Fifty percent of the shares subject to the restricted stock units vested on August 1, 2017, and twenty five percent of the restricted stock units are scheduled to vest quarterly thereafter so as to be 100% vested on August 1, 2018.
(7)	Fifty percent of the Shares subject to the Restricted Stock Units are scheduled to vest on February 15, 2018, and twenty five percent of the remaining Restricted Stock Units will vest each three months thereafter.

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