Calix Director Carl Russo Receives 17,603 Options

A director's award vests in 25% installments on each anniversary of the September 28, 2026 grant date and expires September 28, 2036.

Rhea-AI Filing Summary

Calix, Inc. director and ten percent owner Carl Russo received an automatically awarded grant of 17,603 stock options on September 28, 2026, with an exercise price of $33.19 per share. The options vest and become exercisable for 25% of the underlying shares on each anniversary of the grant date. The reported resulting direct option position was 17,603 options, which expire September 28, 2036.

Insider Trade Summary

Grant/Award: 17,603 shares

Grant/Award 1 txn

Insider Russo Carl

Role Director, 10% Owner

Type	Security	Shares	Price	Value
Grant/Award	Stock Options (right to buy) F1	17,603	$0.00	$0.00

Holdings After Transaction: Stock Options (right to buy) — 17,603 contracts (Direct)

Footnotes (1)

1. F1. The automatically awarded option vests and becomes exercisable with respect to 25% of the shares of common stock underlying the option on each anniversary of the date of grant (September 28, 2026).

Key Figures

Options granted: 17,603 stock options Exercise price: $33.19 per share Vesting schedule: 25% of underlying shares +2 more

5 metrics

Options granted 17,603 stock options September 28, 2026

Exercise price $33.19 per share Awarded options

Vesting schedule 25% of underlying shares On each anniversary of the grant date

Resulting direct option position 17,603 options Following the transaction

Expiration date September 28, 2036 Awarded options

Key Terms

vests, exercisable, right to buy

3 terms

vests financial

"vests and becomes exercisable with respect to 25%"

exercisable financial

"becomes exercisable with respect to 25%"

right to buy financial

"Stock Options (right to buy)"

FAQ

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How many CALX options did Carl Russo receive, and at what exercise price?

Calix, Inc. director and ten percent owner Carl Russo received an automatically awarded grant of 17,603 stock options on September 28, 2026, at an exercise price of $33.19 per share.

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

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Available on EDGAR 09/29/2026 - 04:16 PM Accepted by SEC EDGAR 09/29/2026 - 04:15 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^*

Russo Carl

(Last) (First) (Middle)

C/O CALIX, INC.

3155 OLSEN DRIVE, SUITE 450

(Street)

SAN JOSE CALIFORNIA 95117

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CALIX, INC [ (CALX) ]

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

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/28/2026

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
Stock Options (right to buy)	$33.19	09/28/2026		A		17,603		09/28/2027(1)	09/28/2036	Common Stock	17,603	$0	17,603	D

Explanation of Responses:

1. The automatically awarded option vests and becomes exercisable with respect to 25% of the shares of common stock underlying the option on each anniversary of the date of grant (September 28, 2026).

Remarks:

	/s/ Tom Gemetti as Attorney-in-Fact for Carl Russo	09/29/2026
	** 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)