[Form 4] HARMONIC INC. Insider Trading Activity

Rhea-AI Filing Summary

Harmonic Inc. (HLIT) Chief Financial Officer Form 4 filing reports routine equity compensation activity. On 11/22/2025, the CFO exercised 6,645 restricted stock units into an equal number of HLIT common shares at an exercise price of $0. On the same date, 3,335 shares of common stock were disposed of at $8.87 per share in a transaction coded “F,” typically reflecting shares withheld to cover taxes on vested awards.

After these transactions, the CFO directly beneficially owned 106,747 shares of HLIT common stock and 13,289 restricted stock units, each RSU representing a contingent right to receive one share of HLIT common stock.

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^*

Jankovic Walter

(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)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
11/22/2025

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	11/22/2025		M		6,645	A	$0	110,082	D
Common Stock	11/22/2025		F		3,335	D	$8.87	106,747	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	11/22/2025		M			6,645	05/22/2024	05/22/2026	Common Stock	6,645	$0	13,289	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	11/25/2025
	** 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 did Harmonic Inc. (HLIT) disclose in this Form 4 filing?

The filing shows the CFO exercised 6,645 restricted stock units into HLIT common stock and had 3,335 shares withheld in a transaction coded “F” on 11/22/2025.

How many Harmonic (HLIT) shares does the CFO own after these transactions?

Following the reported transactions, the CFO directly beneficially owned 106,747 shares of HLIT common stock.

What happened to the 6,645 restricted stock units reported for HLIT?

On 11/22/2025, 6,645 restricted stock units were exercised (transaction code “M”), converting into 6,645 shares of HLIT common stock at an exercise price of $0.

Why were 3,335 HLIT shares disposed of at $8.87 in the Form 4?

The 3,335 shares disposed of at $8.87 per share are coded “F,” which generally indicates shares were withheld to satisfy tax obligations related to equity awards.

How many restricted stock units in HLIT does the CFO still hold?

After the reported activity, the CFO beneficially owned 13,289 restricted stock units, each representing a contingent right to receive one HLIT common share.

What is the CFO’s role and relationship to Harmonic Inc. (HLIT)?

The reporting person is identified as an officer of Harmonic Inc., serving as its Chief Financial Officer and filing individually on this Form 4.