Carl Russo - 29 Sep 2025 Form 4 Insider Report for CALIX, INC ((CALX))

Role: Director, 10%+ Owner
Signature: /s/ Tom Gemetti as Attorney-in-Fact for Carl Russo
Issuer symbol: (CALX)
Transactions as of: 29 Sep 2025
Transactions value $: $0
Form type: 4
Filing time: 01 Oct 2025, 16:10:55 UTC
Previous filing: 29 Jul 2025
Next filing: 06 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Russo Carl	Director, 10%+ Owner	C/O CALIX, INC., 3155 OLSEN DRIVE, SUITE 450, SAN JOSE	/s/ Tom Gemetti as Attorney-in-Fact for Carl Russo	01 Oct 2025	0001483757

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	(CALX)	Stock Options (right to buy)	Award	$0	+10.3K		$0.00	10.3K	29 Sep 2025	Common Stock	10.3K	$61.38	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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 29, 2025).