CALIX, INC — Director's Dealing 2025

May 12, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CALIX, INC ((CALX))
CIK: 0001406666
Period of Report: 2025-05-08

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-08	Common Stock	A	4689	—	Acquired	3753070	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-05-08	Stock Options (right to buy)	$42.65	A	28606	Acquired	2035-05-08	Common Stock (28606)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2139188	Indirect
Common Stock	13782	Indirect

Footnotes

F1: Represents an award of restricted stock pursuant to the Issuer non-employee director equity compensation policy, which will vest on the day immediately preceding the date of the annual meeting of stockholders that occurs in the year following the year of grant.

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

F3: 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.

F4: The 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 (May 8, 2025).