144 0001483757 XXXXXXXX LIVE 0001406666 CALIX, INC 001-34674 3155 OLSEN DRIVE, SUITE 450 SAN JOSE CA 95117 408-514-3000 Russo Carl Officer Director 10% Stockholder Common Wells Fargo Clearing Services

One North Jefferson Avenue St. Louis MO 63103

75000 2710993.01 62963989 07/27/2026 NYSE Common 01/30/2023 Stock Options Issuer N 75000 01/30/2023 N/A N Crescentico Trust

3155 Olsen Drive, Suite 450 San Jose CA 95117

Calix, Inc. 04/27/2026 25000 1080321.44 The 75,000 shares were sold by the Crescentico Trust, and Carl Russo is a Trustee of the Trust. He is also a Director, Officer and a ten percent shareholder of Calix Inc 07/27/2026 04/23/2026 Carl Russo