Harmonic grants 49,161 RSUs to senior executive

Glahn Ronald J reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Glahn Ronald J reported acquisition or exercise transactions in this Form 4 filing.

Harmonic Inc. reported that SVP, Global Sales, Broadband Ronald J. Glahn received a grant of 49,161 restricted stock units linked to Harmonic common stock. Each unit represents a contingent right to receive one share.

One third of the RSUs is scheduled to vest on 2/15/2027, with about 8.33% of the remaining units vesting every three months so the award becomes fully vested on the third anniversary of the RSU Vesting Commencement Date. After this grant, Glahn owns 49,161 RSUs directly.

Insider Trade Summary

Grant/Award: 49,161 shares

Grant/Award 1 txn

Insider Glahn Ronald J

Role SVP, Global Sales, Broadband

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	49,161	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 49,161 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.

FAQ

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

What does Harmonic (HLIT) report in Ronald Glahn’s latest Form 4?

Harmonic reports that Ronald J. Glahn, its SVP, Global Sales, Broadband, received 49,161 restricted stock units. These units are a form of stock-based compensation that will convert into Harmonic common shares if service-based vesting conditions are met over time.

How many restricted stock units did HLIT grant to Ronald Glahn?

Harmonic granted Ronald Glahn 49,161 restricted stock units. Each unit corresponds to a contingent right to receive one share of Harmonic common stock, providing equity-based incentives aligned with the company’s long-term performance and his continued employment.

What is the vesting schedule for Ronald Glahn’s 49,161 HLIT RSUs?

One third of Glahn’s restricted stock units is scheduled to vest on 2/15/2027. Approximately 8.33% of the remaining units will then vest every three months until the grant is 100% vested on the third anniversary of the RSU Vesting Commencement Date.

What does each restricted stock unit granted by Harmonic to Ronald Glahn represent?

Each restricted stock unit granted to Ronald Glahn represents a contingent right to receive one share of Harmonic common stock. Actual shares will only be delivered as the units vest according to the specified schedule and service-based conditions.

Did Ronald Glahn buy or sell HLIT shares in this Form 4 transaction?

The Form 4 shows an acquisition through a grant of restricted stock units, not an open-market buy or sale. It reflects stock-based compensation awarded by Harmonic rather than Glahn purchasing or selling existing Harmonic shares in the market.

How many HLIT restricted stock units does Ronald Glahn hold after this grant?

Following the reported grant, Ronald Glahn holds 49,161 restricted stock units directly. These units will convert into Harmonic common shares only as they vest according to the outlined schedule tied to his ongoing service with the company.

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

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Accepted by SEC EDGAR 03/18/2026 - 09:55 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^*

Glahn Ronald J

(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)
	SVP, Global Sales, Broadband

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

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	03/16/2026		A		49,161		02/15/2027(2)	02/15/2029	Common Stock	49,161	$0	49,161	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	03/18/2026
	** 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)