Carl Russo - 02 Jan 2026 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: 02 Jan 2026
Net transactions value: $0
Form type: 4
Filing time: 05 Jan 2026, 16:28:09 UTC
Previous filing: 25 Nov 2025
Next filing: 08 Jan 2026
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	05 Jan 2026	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)	Employee Stock Options (right to buy)	Award	$0	+11,663		$0.000000	11,663	02 Jan 2026	Common Stock	11,663	$53.59	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 (January 2, 2026).