CALIX, INC — Director's Dealing 2025

Nov 12, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CALIX, INC ((CALX))
CIK: 0001406666
Period of Report: 2025-11-06

Reporting Person: SINDELAR CORY (Chief Financial Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-11-06	Common Stock	M	50000	$5.05	Acquired	126555	Direct
2025-11-06	Common Stock	S	50000	$65.2987	Disposed	76555	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-11-06	Stock Option (right to buy)	$5.05	M	50000	Disposed	2027-10-01	Common Stock (50000)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $65.00 to $65.99, inclusive. Full information on the number of
shares sold at each sale price is available upon request.

F2: 100% of the shares subject to the option were fully vested and exercisable on October 1, 2021.