CALIX, INC — Director's Dealing 2017

May 24, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CALIX, INC ((CALX))
CIK: 0001406666
Period of Report: 2017-05-20

Reporting Person: CHEUNG SHEILA (VP, Finance & Accounting)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-20	Common Stock	M	6625	—	Acquired	6625	Direct
2017-05-20	Common Stock	F	2516	$6.65	Disposed	4109	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-05-20	Restricted Stock Units	$0.0	M	6625	Disposed		Common Stock (6625.0)	Direct

Footnotes

F1: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the issuer's common stock upon vesting.

F2: Represents shares withheld by the issuer to satisfy certain tax withholding obligations associated with the vesting of RSUs.

F3: The reporting person was granted 26,500 RSUs as reported on the Form 3 filed on June 27, 2016. 25% of the RSUs vested on May, 20, 2017 and 6.25% of the total RSUs granted will continue to vest in quarterly increments until the RSUs are fully vested.