SEC Form 4 reporting owner

Callahan Michael John

Callahan Michael John has filed 9 Form 4 transactions reported between February 15, 2026 and September 11, 2026, as Chief Administrative Officer of Rivian Automotive, Inc. / DE.

Name as filed: CALLAHAN MICHAEL JOHN

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$244K

1 lines

Companies

with Form 4 filings

Latest transaction

Sep 11, 2026

transaction date

Roles and reported holdings

RIVNRivian Automotive, Inc. / DE
Feb 15, 2026 – Sep 11, 2026
Chief Administrative Officer
Held directly1,016,776 sh as of Sep 11, 2026 · Form 4
24 months: $244K sold

Transaction history

All 9 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
Sep 11, 2026	RIVNChief Administrative Officer	Open-market saleCode S · direct	15,000	$16.29	$244K@ $16.29	1,016,776	Form 4
Aug 15, 2026	RIVNChief Administrative Officer	Shares withheld for tax or exercise priceCode F · direct	42,082	$15.36	$646K@ $15.36	1,031,776	Form 4
May 20, 2026	RIVNChief Administrative Officer	Grant or awardCode A · direct	1,682	$11.67	$20K@ $11.67	1,073,858	Form 4
May 15, 2026	RIVNChief Administrative Officer	Shares withheld for tax or exercise priceCode F · direct	42,082	$14.52	$611K@ $14.52	1,072,176	Form 4
Mar 20, 2026	RIVNChief Administrative Officer	Grant or awardCode A · direct	528,402	—	—	528,402	Form 4
Mar 20, 2026	RIVNChief Administrative Officer	Grant or awardCode A · direct	264,201	—	—	1,114,258	Form 4
Mar 4, 2026	RIVNChief Administrative Officer	Shares withheld for tax or exercise priceCode F · direct	12,453	$15.10	$188K@ $15.10	850,057	Form 4
Mar 4, 2026	RIVNChief Administrative Officer	Grant or awardCode A · direct	24,475	—	—	862,510	Form 4
Feb 15, 2026	RIVNChief Administrative Officer	Shares withheld for tax or exercise priceCode F · direct	25,490	$17.73	$452K@ $17.73	838,035	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.