Personalis shares preliminary Q4 and full-year 2025 results update

Personalis, Inc. reported that it has released certain preliminary financial and operational results for the quarter and fiscal year ended December 31, 2025.

Rhea-AI Filing Summary

Personalis, Inc. reported that it has released certain preliminary financial and operational results for the quarter and fiscal year ended December 31, 2025. These results were announced through a press release dated January 8, 2026.

The company furnished the full text of this press release as Exhibit 99.1 to the current report, incorporating it by reference for informational purposes. The information in this report, including Exhibit 99.1, is provided under special Exchange Act provisions so it is not treated as formally filed or automatically incorporated into other securities law filings unless specifically referenced.

8-K Event Classification

2 items: 2.02, 9.01

2 items

Item 2.02 Results of Operations and Financial Condition Financial

Disclosure of earnings results, typically an earnings press release or preliminary financials.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What event did Personalis (PSNL) report in this 8-K?

Personalis reported that it issued a press release announcing certain preliminary financial and operational results for the quarter and fiscal year ended December 31, 2025.

How did Personalis (PSNL) disclose its preliminary 2025 results?

Personalis disclosed its preliminary 2025 quarterly and full-year results through a press release dated January 8, 2026, which is furnished as Exhibit 99.1 to this report.

Where can investors find the detailed preliminary results for Personalis (PSNL)?

The detailed preliminary financial and operational results are contained in the press release furnished as Exhibit 99.1 to the report.

Are the Personalis (PSNL) preliminary results considered filed with the SEC?

The company states that the information in this report, including Exhibit 99.1, is furnished and shall not be deemed to be filed for purposes of Section 18 of the Exchange Act.

Who signed the Personalis (PSNL) report related to the preliminary results?

The report was signed on behalf of Personalis, Inc. by Aaron Tachibana, Chief Financial Officer and Chief Operating Officer.

What exhibits are included with this Personalis (PSNL) 8-K?

The report includes Exhibit 99.1, which is the press release announcing preliminary results, and Exhibit 104, the cover page interactive data file embedded within the inline XBRL document.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 01/08/2026 - 08:05 AM EST Learn about SEC filing dates

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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): January 8, 2026

Personalis, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware	001-38943	27-5411038
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(IRS Employer Identification No.)
6600 Dumbarton Circle Fremont, California		94555
(Address of Principal Executive Offices)		(Zip Code)

(650) 752-1300

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 (see General Instructions A.2. below):

☐ 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, $0.0001 par value per share		PSNL		The Nasdaq Global 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 2.02 Results of Operations and Financial Condition.

On January 8, 2026, Personalis, Inc. issued a press release announcing certain preliminary financial and operational results for the quarter and fiscal year ended December 31, 2025. The full text of the press release is furnished as Exhibit 99.1 to this report on Form 8-K and is incorporated herein by reference.

The information in this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933 or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit Number		Description
99.1		Press release of Personalis, Inc., dated January 8, 2026.
104		Cover Page Interactive Data File (embedded within the inline XBRL document).

SIGNATURES

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 thereunto duly authorized.

Date: January 8, 2026		Personalis, Inc.
		By:	/s/ Aaron Tachibana
			Aaron Tachibana
			Chief Financial Officer and Chief Operating Officer