Groowe Groowe BETA / Newsroom
⏱ News is delayed by 15 minutes. Sign in for real-time access. Sign in

Form 8-K

sec.gov

8-K — Rivian Automotive, Inc. / DE

Accession: 0001104659-26-102435

Filed: 2026-08-27

Period: 2026-08-24

CIK: 0001874178

SIC: 3711 (MOTOR VEHICLES & PASSENGER CAR BODIES)

Item: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — tm2624125d1_8k.htm (Primary)

EX-99.1 — EXHIBIT 99.1 (tm2624125d1_ex99-1.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K — FORM 8-K

8-K (Primary)

Filename: tm2624125d1_8k.htm · Sequence: 1

false

0001874178

Rivian Automotive, Inc. / DE

0001874178

2026-08-24

2026-08-24

iso4217:USD

xbrli:shares

iso4217:USD

xbrli:shares

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

EX-99.1 — EXHIBIT 99.1

EX-99.1

Filename: tm2624125d1_ex99-1.htm · Sequence: 2

Exhibit 99.1

Rivian Announces CFO Transition Plan

● Claire McDonough to step down on October 30, 2026 after nearly six years of financial and strategic leadership

● Derek Mulvey expected to be appointed Interim Chief Financial Officer as search for permanent successor is underway

IRVINE, Calif. — August 27, 2026 — Rivian Automotive,

Inc. (NASDAQ: RIVN) today announced that Chief Financial Officer Claire McDonough has decided to step down from her role to pursue a new

opportunity and relocate to the East Coast to be closer to her family.

McDonough will remain in her role as CFO over the next two months to

ensure a seamless and thorough transition. During this period, she will work closely with CEO RJ Scaringe and the executive leadership

team to transition key strategic initiatives. Her final day with Rivian will be October 30, 2026.

Rivian has a comprehensive executive search process underway, evaluating

both internal and external candidates, to identify the company’s next Chief Financial Officer. To maintain operational continuity,

Derek Mulvey, Vice President of Finance, is expected to be appointed Interim Chief Financial Officer, effective upon McDonough's departure.

Mulvey joined Rivian in 2021 and has worked closely with Scaringe and McDonough on the company’s financial planning, strategic partnerships,

capital allocation and investor relations. He has been instrumental in Rivian’s strategy and execution and will enable a seamless

transition. Prior to his tenure at Rivian, Mulvey was Vice President at J. P. Morgan.

Since joining Rivian in January 2021, McDonough played a central role

in constructing Rivian’s financial foundation and navigating its growth as a public company. Under her leadership, Rivian successfully

executed its historic $13.7 billion initial public offering in November 2021, one of the largest IPOs in U.S. history, securing the capital

required to scale initial manufacturing operations at its Normal, Illinois facility. Throughout her tenure, McDonough and her team have

built robust capital management frameworks across major growth cycles, driven cost-reduction initiatives essential to achieving long-term

gross margin targets, and helped structure key strategic partnerships.

Rivian’s CEO RJ Scaringe said:

“Claire joined Rivian almost six years ago, and she’s

had a meaningful impact on our business and our teams during a transformative period of growth. From guiding us through our IPO to building

many of our financial operating frameworks, her strategic approach has helped strengthen our overall execution. Beyond her work on our

capital roadmap, Claire has been a trusted leader and partner across the organization. While she will be missed, I’m thrilled that

Derek is taking on the interim CFO role. Derek has worked incredibly closely with me, Claire and our leadership team for several years

and will enable a seamless transition.”

Rivian’s Chief Financial Officer Claire McDonough said:

“Serving as Rivian’s CFO alongside RJ and

this exceptional team has been the highlight of my career. I am tremendously proud of everything we have accomplished together—from

building and scaling the business with the launch of R1 and our commercial van to establishing the financial and operational foundation

that will propel the company through the ramp of R2 and beyond. As I step away for a new opportunity and to be closer to my family on

the East Coast, I do so with absolute confidence in Rivian’s trajectory, mission, and leadership team.”

Rivian’s strong executive leadership bench will work alongside

Mulvey to ensure a smooth transition and maintain execution across key strategic initiatives.

About Rivian:

Rivian (NASDAQ: RIVN) is an American automotive technology

company that develops and builds category-defining electric vehicles as well as vertically integrated technologies and services. Through

innovation across its electrical architecture, end-to-end software, autonomous driving platform, artificial intelligence and propulsion,

the company creates vehicles that excel at work and play while accelerating the global transition to zero-emission transportation and

energy. Rivian vehicles are manufactured in the United States and are sold directly to consumer and commercial customers. Whether taking

families on new adventures or electrifying fleets at scale, Rivian vehicles all share a common goal — preserving the natural world

for generations to come.

Contacts:

Investors: ir@rivian.com

Media: Harry Porter, media@rivian.com

Forward Looking Statements

This press release contains

forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. We intend such forward-looking

statements to be covered by the safe harbor provisions for forward-looking statements contained in Section 27A of the Securities Act of

1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements contained in this press release that

do not relate to matters of historical fact should be considered forward-looking statements, including without limitation executive leadership

changes. In some cases you can identify forward-looking statements by terms such as “may,” “will,” “should,”

“expects,” “plans,” “anticipates,” “could,” “intends,” “targets,”

“projects,” “contemplates,” “believes,” “estimates,” “forecasts,” “predicts,”

“potential” or “continue” or the negative of these terms or other similar expressions, although not all forward-looking

statements use these words or expressions. We have based these forward-looking statements largely on our current expectations and projections

about future events and financial trends that we believe may affect our business, financial condition, and results of operations. Forward-looking

statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance,

or achievements to be materially different from any future results, performance, or achievements expressed or implied by the forward-looking

statements, including, but not limited to, the important factors discussed in Part II, Item 1A, “Risk Factors” in our Quarterly

Report on Form 10-Q for the quarter ended June 30, 2026, and our other filings with the Securities and Exchange Commission. The forward-looking

statements in this press release are based upon information available to us as of the date of this press release, and while we believe

such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should

not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information.

These statements are inherently uncertain, and investors are cautioned not to unduly rely upon these statements. While we may elect to

update such forward-looking statements at some point in the future, we disclaim any obligation to do so, even if subsequent events cause

our views to change.

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 7

v3.26.1

Cover

Aug. 24, 2026

Cover [Abstract]

Document Type

8-K

Amendment Flag

false

Document Period End Date

Aug. 24, 2026

Entity File Number

001-41042

Entity Registrant Name

Rivian Automotive, Inc. / DE

Entity Central Index Key

0001874178

Entity Tax Identification Number

47-3544981

Entity Incorporation, State or Country Code

DE

Entity Address, Address Line One

14600 Myford Road

Entity Address, City or Town

Irvine

Entity Address, State or Province

CA

Entity Address, Postal Zip Code

92606

City Area Code

888

Local Phone Number

748-4261

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Class

A common stock, $0.001 par value per share

Trading Symbol

RIVN

Security Exchange Name

NASDAQ

Entity Emerging Growth Company

false

X

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Cover page.

+ References

No definition available.

+ Details

Name:

dei_CoverAbstract

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

na

Period Type:

duration

X

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

na

Period Type:

duration

X

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

na

Period Type:

duration