Company: CALX
Filing Date: 2025-03-27
Form Type: DEF 14A
Source: 0001406666-25-000011
Chunk: 3

Company: CALIX, INC
Filing Date: 2025-03-27
Form: DEF 14A
Chunk 3
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| AUDIT COMMITTEE REPORT                                                                                                     |     |  71 |     |     |
| CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS                                                                             |     |  72 |     |     |
| HOUSEHOLDING OF PROXY MATERIALS                                                                                            |     |  72 |     |     |
| OTHER MATTERS                                                                                                              |     |  73 |     |     |
| ANNUAL REPORTS                                                                                                             |     |  73 |     |     |
| APPENDIX A:CALIX, INC. FOURTH AMENDED AND RESTATED 2019 EQUITY INCENTIVE AWARD PLAN                                        |     |     |     | A-1 |
| APPENDIX B:CALIX, INC. STOCK PURCHASE AND MATCHING PLAN                                                                    |     | B-1 |     |     |
| APPENDIX C: RECONCILIATION OF GAAP TO NON-GAAP MEASURES (UNAUDITED)                                                        |     | C-1 |     |     |

<div align='center'>i</div>

#### CALIX, INC.

#### 2777 Orchard Parkway

#### San Jose, California 95134

### PROXY STATEMENT

#### FOR THE 2025 ANNUAL MEETING OF STOCKHOLDERS
<div align='center'>IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE STOCKHOLDER MEETING TO BE HELD ON MAY 8, 2025</div>

The Board of Directors of Calix, Inc. is soliciting your proxy to vote at the virtual Annual Meeting of Stockholders to be held on May 8, 2025, at 10:45 a.m. Pacific Daylight Time, and any adjournment or postponement of that meeting (“Annual Meeting”). The Annual Meeting will be held via live webcast only at www.virtualshareholdermeeting.com/CALX2025 .

We have elected to provide access to our proxy materials on the Internet. Accordingly, we are sending a Notice of Internet Availability of Proxy Materials (“Notice”) to our stockholders of record as of March 11, 2025 (“Record Date”), while brokers and other nominees who hold shares on behalf of beneficial owners will be sending their own similar notice. All stockholders will have the ability to access the proxy materials on the website referred to in the Notice or to request a printed set of the proxy materials. Instructions on how to request a printed copy by mail