8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

 CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 14, 2026

CALIX, INC.

(Exact name of Registrant as specified in its charter)

Delaware	001-34674	68-0438710
(State or other jurisdiction of incorporation)	(Commission File No.)	(I.R.S. Employer Identification No.)
3155 Olsen Drive, Suite 450, San Jose, California		95117
(Address of principal executive offices)		(Zip Code)

(408) 514-3000

(Registrant’s telephone number, including area code)

Not Applicable

(Former name or former address if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol	Name of Each Exchange on Which Registered
Common Stock, par value $0.025 per share	CALX	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act).  o

2

Item 5.07 Submission of Matters to a Vote of Security Holders.

At the annual meeting of stockholders of Calix, Inc. (the “Company”) on May 14, 2026, the stockholders approved the following proposals, casting their votes as follows:

Proposal 1: To elect three Class I directors to the Company’s Board of Directors (the “Board”) to serve until the 2029 annual meeting of stockholders or until their successors are elected and have been qualified, or until their earlier death, resignation or removal:

Nominee	For	Withheld	Broker Non-Votes
Kathleen Crusco	44,653,525	4,573,831	8,996,932
Carl Russo	47,092,848	2,134,508	8,996,932
Michael Weening	48,150,666	1,076,690	8,996,932

Proposal 2: To approve an increase in the number of shares of common stock reserved for issuance under the matching component of the Calix, Inc. Amended and Restated Stock Purchase and Matching Plan by 672,300 shares:

For	Against	Abstained	Broker Non-Votes
40,036,626	9,082,037	108,693	8,996,932

Proposal 3: To approve, on a non-binding, advisory basis, the compensation of the Company’s named executive officers:

For	Against	Abstained	Broker Non-Votes
47,570,890	1,519,777	136,689	8,996,932

Proposal 4: To ratify the selection of KPMG LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026:

For	Against	Abstained
57,677,450	425,224	121,614

Proposal 5: To approve, on an advisory basis, a stockholder proposal relating to a simple majority vote:

For	Against	Abstained	Broker Non-Votes
44,579,584	4,509,208	138,564	8,996,932

3

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date:	May 15, 2026	Calix, Inc.
		By:	/s/ Doug McNitt
			Doug McNitt
			EVP, General Counsel

4

XML

Cover	May 14, 2026
Cover [Abstract]
Document Type	8-K
Document Period End Date	May 14, 2026
Entity Registrant Name	CALIX, INC
Entity Incorporation, State or Country Code	DE
Entity File Number	001-34674
Entity Tax Identification Number	68-0438710
Entity Address, Address Line One	3155 Olsen Drive, Suite 450
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95117
City Area Code	408
Local Phone Number	514-3000
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Common Stock, par value $0.025 per share
Trading Symbol	CALX
Security Exchange Name	NYSE
Entity Emerging Growth Company	false
Entity Central Index Key	0001406666
Amendment Flag	false