Company: CALX
Filing Date: 2025-07-22
Form Type: S-8
Source: 0001406666-25-000036
Chunk: 4

Company: CALIX, INC
Filing Date: 2025-07-22
Form: S-8
Chunk 4
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5andJuly 22, 2025;                                                                                                                                                                                                                          |
| (3) |     | Our Current Reports on Form 8-K (File No. 001-34674) filed with the SEC onMarch27, 2025,April 21, 2025,May9,2025 andMay 13, 2025, each only to the extent filed and not furnished; and                                                                                                                                                 |
| (4) |     | The description of our common stock contained in ourRegistration Statement on Form 8-A(File No. 001-34674), filed with the SEC under Section 12(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), on March 23, 2010, including any amendments or reports filed for the purpose of updating such description. |

All documents filed by us pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that all securities offered hereby have been sold or which deregisters all securities covered hereby then remaining unsold are incorporated by reference in this Registration Statement and are a part hereof from the date of filing of such documents, except as to any portion of any future statement, report or document that is not deemed filed under such provisions. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein, or in any subsequently filed document which also is or is deemed to be incorporated by reference herein, modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute part of this Registration Statement. Under no circumstances will any information furnished under Items 2.02 or 7.01 of Form 8-K be deemed incorporated herein by reference unless such Form 8-K expressly provides to the contrary.

| Item 4. |     | Description of Securities. |

Not applicable.

| Item 5. |     | Interests of Named Experts and Counsel. |

Not applicable.

| Item 6. |     | Indemnification of Directors and Officers. |

Section 145 of the Delaware General Corporation Law (the “DGCL”) permits a corporation to include in its charter documents, and in agreements between the corporation and its directors and officers, provisions expanding the scope of indemnification beyond that