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Notice of Proposed Sale · 144

Rivian Automotive, Inc.

RIVNNASDAQEQUITYCurrent

Notice of Proposed Sale

Filed Oct 1, 2026Accepted Oct 1, 2026, 4:25 PM EDTFiling CIK 1874178Accession 0001950047-26-009955
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Structured filing — 144

primary_doc.xml

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer
RIVIAN AUTOMOTIVE, INC.
Issuer CIK
0001874178
SEC file number
001-41042
Phone
(888) 748-4261
Person for whose account securities are to be sold
MICHAEL J CALLAHAN
Relationships to issuer
Officer
Street
14600 MYFORD ROAD
City
IRVINE
State / country code
CA
Postal code
92606

Securities proposed for sale

Securities proposed for sale · 1 reported row
SecurityProposed unitsAggregate market valueUnits outstandingApproximate sale dateExchangeBroker / market maker
Common15,000225,000.001,443,948,13010/01/2026NASDAQMorgan Stanley Smith Barney LLC Executive Financial Services

Broker / market maker — proposed row 1, entry 1

Name
Morgan Stanley Smith Barney LLC Executive Financial Services
Street
1 New York Plaza
Street (continued)
8th Floor
City
New York
State / country code
NY
Postal code
10004

Acquisition of securities to be sold

Acquisition of securities to be sold · 2 reported rows
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Common08/15/2023Restricted StockIssuer4,833N08/15/2023Not Applicable
Common11/15/2023Restricted StockIssuer10,167N11/15/2023Not Applicable

Sales reported in the preceding three months

Sales reported in the preceding three months · 1 reported row
SellerSecuritySale dateAmount soldGross proceeds
MICHAEL J CALLAHANCommon09/11/202615,000244,390.50

Seller — prior-sale row 1, entry 1

Name
MICHAEL J CALLAHAN
Street
14600 MYFORD ROAD
City
IRVINE
State / country code
CA
Postal code
92606

Prior-sale reporting

Nothing to report for the preceding three months
N

Notice signature

Notice date
10/01/2026
Signed
/s/ Michael Callahan
Plan adoption dates
06/12/2026

Company context

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.

Current securities

Recent company filings

  1. 4 filingOct 2, 2026
  2. Regulation FD DisclosureOct 2, 2026
  3. 4 filingSep 16, 2026
  4. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Regulation FD DisclosureAug 27, 2026
  5. 144 filingAug 20, 2026

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