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Form 8-K

sec.gov

8-K — Guardant Health, Inc.

Accession: 0001193125-26-275864

Filed: 2026-06-18

Period: 2026-06-17

CIK: 0001576280

SIC: 8071 (SERVICES-MEDICAL LABORATORIES)

Item: Submission of Matters to a Vote of Security Holders

Documents

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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): June 17, 2026

GUARDANT HEALTH, INC.

(Exact name of registrant as specified in its charter)

Delaware

001-38683

45-4139254

(State or other jurisdiction

of incorporation or organization)

(Commission

File Number)

(IRS Employer

Identification No.)

3100 Hanover Street

Palo Alto, California 94304

(Address of principal executive offices) (Zip Code)

855-698-8887

(Registrant’s telephone number, include area code)

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(s)

Name of each exchange

on which registered

Common Stock, $0.00001 par value per share

GH

The Nasdaq Global Select Market

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. ☐

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

The annual meeting of stockholders (the “Annual Meeting”) of Guardant Health, Inc. (the “Company”) was held on June 17, 2026.

All of the nominees for director listed in Proposal 1 in the Company’s Definitive Proxy Statement on Schedule 14A, as filed with the Securities and Exchange Commission on April 28, 2026 (the “Proxy Statement”), were elected to serve on the Company’s board of directors by the following vote:

Name of Nominee

Votes For

Votes Withheld

Broker Non-Votes

Ian Clark

70,526,891

37,916,548

7,714,711

Manuel Hidalgo Medina

81,925,123

26,518,316

7,714,711

Proposal 2 in the Proxy Statement, a proposal to ratify the selection of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2026, was approved by the following vote:

Votes For

Votes Against

Abstentions

115,899,030

15,250

243,870

Proposal 3 in the Proxy Statement, a proposal to approve, on an advisory (non-binding) basis, the compensation of the Company’s named executive officers, was not approved by the following vote:

Votes For

Votes Against

Abstentions

Broker Non-Votes

98,236,639

9,905,190

301,610

7,714,711

Proposal 4 in the Proxy Statement, a proposal to determine, on an advisory (non-binding) basis, the frequency of future stockholder advisory votes regarding the compensation of the Company’s named executive officers, was determined as follows:

Votes Cast for One Year

Votes Cast For Two Years

Votes Cast for Three Years

Abstentions

Broker Non-Votes

107,997,996

14,303

265,413

165,727

7,714,711

SIGNATURES

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

GUARDANT HEALTH, INC.

Date: June 18, 2026

By:

/s/ John G. Saia

John G. Saia

Chief Legal Officer and Corporate Secretary

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