[Form 4] HARMONIC INC. Insider Trading Activity

Rhea-AI Filing Summary

Harmonic Inc. (HLIT) reported insider equity activity by its General Counsel & SVP, HR on Form 4. On 11/15/2025, the officer acquired 11,276 shares of common stock at $0 through the conversion (code M) of previously granted restricted stock units. On the same date, 3,968 shares of common stock were disposed of at $9.56 per share (code F), reflecting shares withheld to cover obligations. Following these transactions, the officer directly owned 119,455 shares of Harmonic common stock. In addition, derivative holdings included restricted stock units covering 5,223 shares and 6,053 shares, part of a total of 30,267 derivative securities beneficially owned, each RSU representing the right to receive one HLIT share.

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Chu Timothy C

(Last) (First) (Middle)

2590 ORCHARD PARKWAY

(Street)

SAN JOSE CA 95131

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
HARMONIC INC. [ HLIT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	General Counsel & SVP, HR

3. Date of Earliest Transaction (Month/Day/Year)
11/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	11/15/2025		M		11,276	A	$0	123,423	D
Common Stock	11/15/2025		F		3,968	D	$9.56	119,455	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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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
Restricted Stock Units(1)	$0	11/15/2025		M			5,223	02/15/2024	02/15/2026	Common Stock	5,223	$0	5,223	D
Restricted Stock Units(1)	$0	11/15/2025		M			6,053	02/15/2025	02/15/2027	Common Stock	6,053	$0	30,267	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of HLIT common stock.

	/s/ Wendi Ninh, Attorney-in-Fact	11/18/2025
	** Signature of Reporting Person	Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Harmonic Inc. (HLIT) report on this Form 4?

The filing shows Harmonic Inc.'s General Counsel & SVP, HR acquired 11,276 shares of common stock at $0 on 11/15/2025 via conversion of restricted stock units (transaction code M), and had 3,968 shares disposed of at $9.56 per share (transaction code F), reflecting share withholding.

How many Harmonic (HLIT) shares does the reporting officer own after the Form 4 transactions?

After the reported transactions on 11/15/2025, the officer directly owns 119,455 shares of Harmonic common stock.

What do the transaction codes M and F mean in the Harmonic (HLIT) Form 4?

In the filing, code M indicates the exercise or conversion of derivative securities, here restricted stock units converted into 11,276 common shares at $0. Code F indicates the disposition of 3,968 shares at $9.56, typically representing shares withheld to satisfy obligations.

What restricted stock unit (RSU) activity is disclosed for Harmonic (HLIT)?

The Form 4 lists restricted stock units with an exercise price of $0. On 11/15/2025, 5,223 RSUs (grant exercisable from 02/15/2024 to 02/15/2026) and 6,053 RSUs (grant exercisable from 02/15/2025 to 02/15/2027) were converted into the same number of common shares.

How many derivative securities does the Harmonic (HLIT) officer still hold after the Form 4?

Following the reported RSU conversions on 11/15/2025, the officer beneficially owns 30,267 derivative securities, consisting of restricted stock units tied to Harmonic common stock.

Who is the reporting person on the Harmonic Inc. (HLIT) Form 4 and what is their role?

The reporting person is an officer of Harmonic Inc., serving as General Counsel & SVP, HR, and the Form 4 indicates the filing is by one reporting person.