Harmonic grants 10,307 RSUs to senior executive

Chu Timothy C reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Chu Timothy C reported acquisition or exercise transactions in this Form 4 filing.

HARMONIC INC. reported that General Counsel & SVP, HR Timothy C. Chu received a grant of 10,307 Restricted Stock Units on 2026-08-10. Each unit represents a contingent right to receive one share of HLIT common stock. Following this grant, Chu holds 10,307 RSUs directly.

One third of the RSUs is scheduled to vest on 2027-02-15, with approximately 8.33% of the remaining units vesting every three months thereafter, so that the award is fully vested on the third anniversary of the RSU vesting commencement date.

Insider Trade Summary

Grant/Award: 10,307 shares

Grant/Award 1 txn

Insider Chu Timothy C

Role General Counsel & SVP, HR

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units F1, F2	10,307	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 10,307 contracts (Direct)

Footnotes (2)

1. F1. Each restricted stock unit represents a contingent right to receive one share of HLIT common stock.
2. F2. One third (33.33%) of the Shares subject to the Restricted Stock Units are scheduled to vest on 2/15/2027, and approximately 8.33% of the remaining Restricted Stock Units will vest each three months thereafter, so as to be 100% vested on the third anniversary of the RSU Vesting Commencement Date.

Key Figures

RSUs granted: 10,307 units RSUs following transaction: 10,307 units Initial vesting: 33.33% +2 more

5 metrics

RSUs granted 10,307 units Restricted Stock Units granted to Timothy C. Chu on 2026-08-10

RSUs following transaction 10,307 units Total Restricted Stock Units held directly by Timothy C. Chu after the grant

Initial vesting 33.33% Portion of RSUs scheduled to vest on 2027-02-15

Subsequent vesting rate 8.33% Approximate portion of remaining RSUs vesting each three months thereafter

Final vesting horizon 3 years RSUs 100% vested on third anniversary of RSU vesting commencement date

Key Terms

Restricted Stock Units, contingent right, vest, RSU Vesting Commencement Date

4 terms

Restricted Stock Units financial

"Each restricted stock unit represents a contingent right to receive one share"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"represents a contingent right to receive one share of HLIT common stock"

vest financial

"One third (33.33%) of the Shares subject to the Restricted Stock Units are scheduled to vest"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

RSU Vesting Commencement Date financial

"100% vested on the third anniversary of the RSU Vesting Commencement Date"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Timothy C. Chu report in this Form 4 for HLIT?

Timothy C. Chu reported an award of 10,307 Restricted Stock Units tied to HLIT common stock. These RSUs are part of his equity compensation and vest over a three-year schedule starting in 2027.

How many HLIT RSUs did Timothy C. Chu acquire in this transaction?

Timothy C. Chu acquired 10,307 Restricted Stock Units. Each unit is a contingent right to receive one share of HLIT common stock, subject to the specified vesting conditions over three years.

What is the vesting schedule of the 10,307 HLIT RSUs granted to Chu?

One third (33.33%) of the RSUs is scheduled to vest on 2027-02-15. Approximately 8.33% of the remaining units will then vest every three months until fully vested on the third anniversary of the vesting commencement date.

What are Timothy C. Chu’s HLIT RSU holdings after this grant?

After this grant, Timothy C. Chu holds 10,307 Restricted Stock Units directly. These RSUs, if fully vested and settled, would result in the delivery of 10,307 shares of HLIT common stock, subject to plan terms.

Does this HLIT Form 4 involve any stock sales by Timothy C. Chu?

No, this Form 4 reports only an acquisition via grant of 10,307 RSUs and no sales. The transaction code is “A,” described as a grant, award, or other acquisition of derivative securities.

Is there an exercise or conversion price for the HLIT RSUs granted to Chu?

The RSUs carry a conversion price of $0.00 per share, reflecting that they are restricted stock units, not options. Each vested unit converts into one share of HLIT common stock without an exercise payment.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/12/2026 - 05:38 PM Accepted by SEC EDGAR 08/12/2026 - 05:37 PM Learn about SEC filing dates

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
Estimated average burden
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^*

Chu Timothy C

(Last) (First) (Middle)

2590 ORCHARD PARKWAY

(Street)

SAN JOSE CALIFORNIA 95131

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/10/2026

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

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

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

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

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	08/10/2026		A		10,307		02/15/2027(2)	02/15/2029	Common Stock	10,307	$0	10,307	D

Explanation of Responses:

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

2. One third (33.33%) of the Shares subject to the Restricted Stock Units are scheduled to vest on 2/15/2027, and approximately 8.33% of the remaining Restricted Stock Units will vest each three months thereafter, so as to be 100% vested on the third anniversary of the RSU Vesting Commencement Date.

	/s/ Wendi Ninh, Attorney-in-Fact	08/12/2026
	** 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.
* Form 4: SEC 1474 (03-26)