CALIX, INC — Director's Dealing 2026

Feb 26, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CALIX, INC ((CALX))
CIK: 0001406666
Period of Report: 2026-02-25

Reporting Person: Russo Carl (Director, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-25	Common Stock	M	10000	$12.63	Acquired	3993070	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-25	Stock Option (right to buy)	$12.63	M	10000	Disposed	2030-05-22	Common Stock (10000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	13782	Indirect
Common Stock	1669188	Indirect

Footnotes

F1: Shares held by Equanimous Investments. The managing members of Equanimous Investments are Carl Russo and Tim Pasquinelli. These individuals may be deemed to have shared voting and investment power over the shares held by Equanimous Investments. Each of these individuals disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.

F2: Shares held by The Crescentico Trust, Carl Russo, Trustee.

F3: 100% of the shares subject to the option were fully vested and exercisable on May 22, 2024.