CALIX, INC — Director's Dealing 2010

May 13, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CALIX, INC (CALX)
CIK: 0001406666
Period of Report: 2010-05-11

Reporting Person: LISTWIN DONALD J (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-11	Common Stock	P	60000	$10.146	Acquired	407464	Direct
2010-05-12	Common Stock	P	40000	$10.413	Acquired	447464	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $10.0400 to $10.1985, inclusive. Full information on the number of shares purchased at each purchase price is available upon request.

F2: Consists of an aggregate of 25,598 restricted stock units ("RSUs"). The Reporting Person is entitled to receive one (1) share of Common Stock for each one (1) RSU upon vesting. 11,666 of the RSUs will vest on the first day that the Issuer's trading window opens for employees that is more than 180 days following the effective date of the Issuer's initial public offering (the "First Vesting Date"), and 11,666 of the RSUs will vest on the first day the trading window opens for employees that is more than 180 days after the First Vesting Date. The remaining 2,266 RSUs will vest on January 26, 2011.

F3: The price reported in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $10.1200 to $10.6644, inclusive. Full information on the number of shares purchased at each purchase price is available upon request.