[Form 4] HARMONIC INC. Insider Trading Activity

Rhea-AI Filing Summary

Harmonic Inc. (HLIT) senior vice president and GM of the Video Business reported equity transactions involving company stock. On 11/15/2025, the officer acquired 10,900 shares of common stock at $0 per share through the vesting and settlement of restricted stock units coded as an "M" transaction. On the same date, 5,805 shares were disposed of at $9.56 per share in an "F" transaction, typically reflecting shares withheld to cover taxes. After these transactions, the officer directly owned 178,297 shares of Harmonic common stock. The derivative table shows two restricted stock unit grants, originally for 5,049 and 5,851 shares of common stock, each with a conversion price of $0, which were exercised into common stock on 11/15/2025.

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

OMB Number:			3235-0287
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hours per response:			0.5

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^*

Haltmayer Neven

(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)
	SVP & GM, Video Business

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		10,900	A	$0	184,102	D
Common Stock	11/15/2025		F		5,805	D	$9.56	178,297	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			5,049	02/15/2024	02/15/2026	Common Stock	5,049	$0	5,049	D
Restricted Stock Units(1)	$0	11/15/2025		M			5,851	02/15/2025	02/15/2027	Common Stock	5,851	$0	29,258	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 reports that a Harmonic Inc. officer exercised restricted stock units into 10,900 shares of common stock on 11/15/2025, and disposed of 5,805 shares on the same date.

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

The reporting person is an officer of Harmonic Inc. serving as SVP & GM, Video Business.

How many Harmonic Inc. (HLIT) shares does the officer own after the reported transactions?

Following the reported transactions on 11/15/2025, the officer directly owned 178,297 shares of Harmonic Inc. common stock.

What types of securities were involved in this Harmonic Inc. (HLIT) Form 4?

The Form 4 involves common stock and restricted stock units (RSUs), with each RSU representing a contingent right to receive one share of HLIT common stock.

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

Code M indicates the exercise or conversion of derivative securities, such as restricted stock units, into common stock. Code F indicates a disposition of shares to pay tax withholding obligations.

What were the sizes of the RSU grants converted in this Harmonic Inc. (HLIT) Form 4?

The derivative table shows RSU grants covering 5,049 shares and 5,851 shares of common stock, both with a conversion price of $0, that were exercised on 11/15/2025.