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

August 24, 2026

Date of Report (date of earliest event reported)

Rivian Automotive, Inc.

(Exact name of registrant as specified in its charter)

Delaware		001-41042		47-3544981
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification Number)

14600 Myford Road

Irvine, California 92606

(Address of principal executive offices) (Zip code)

(888) 748-4261

(Registrant’s telephone number, including area code)

N/A

(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
Class A common stock, $0.001 par value per share		RIVN		The Nasdaq Stock 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 5.02 - Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On August 24, 2026, Claire McDonough, the Chief Financial Officer of Rivian Automotive, Inc. (the “Company”), notified the Company of her decision to resign effective October 30, 2026 (the “Effective Date”) to pursue a new opportunity and relocate to the East Coast to be closer to her family. Her resignation is not the result of any disagreement with the Company on any matters related to its financial reporting, operations, policies or practices. Ms. McDonough will remain in her current role at the Company through the Effective Date to assist with the transition.

The Company has a comprehensive executive search process underway, evaluating both internal and external candidates, to identify its next Chief Financial Officer. To maintain operational continuity, Derek Mulvey, the Company’s Vice President of Finance, is expected to be appointed as the Company’s Interim Chief Financial Officer, effective upon Ms. McDonough's departure. Mr. Mulvey joined the Company in 2021 and has worked closely with CEO R.J. Scaringe and Ms. McDonough on the Company’s financial planning, strategic partnerships, capital allocation and investor relations.

Item 7.01 – Regulation FD Disclosure.

On August 27, 2026, the Company issued a press release announcing the Chief Financial Officer transition plan, a copy of which is attached as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

The information furnished pursuant to Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any other filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any general incorporation language in such filing, except as expressly set forth by specific reference in such filing.

Item 9.01 - Financial Statements and Exhibits.

(d) Exhibits:

Exhibit No.	Description
99.1	Press Release, dated August 27, 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, as amended, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	RIVIAN AUTOMOTIVE, INC.

Date: August 27, 2026	By:	/s/ Michael J. Callahan
	Name:	Michael J. Callahan
	Title:	Chief Administrative Officer and Secretary