CALLAHAN MICHAEL JOHN 4
4 · Rivian Automotive, Inc. / DE · Filed May 19, 2026
Research Summary
AI-generated summary of this filing
Rivian Chief Administrative Officer Michael Callahan Sells 42,082 Shares
What Happened
Michael John Callahan, Rivian's Chief Administrative Officer, had 42,082 shares of Class A common stock withheld by the company on May 15, 2026 to satisfy tax withholding obligations tied to the vesting of 82,703 restricted stock units (RSUs). The withheld shares were valued at $14.52 each (closing price on May 14, 2026), for a total value of approximately $611,031. This was a tax-withholding disposition (routine), not an open-market sale.
Key Details
- Transaction date: May 15, 2026 (reported on Form 4 filed May 19, 2026)
- Transaction code: F (shares withheld to satisfy tax withholding)
- Withheld: 42,082 shares at $14.52 per share; total value ≈ $611,031 (per filing footnote)
- RSUs vested: 82,703 shares; net delivered to Callahan after withholding: 82,703 − 42,082 = 40,621 shares
- Shares owned after transaction: not specified in the filing
- Footnotes: F1 explains withholding satisfied tax on RSU vesting; F2 cites the May 14, 2026 closing price used for valuation
- Timeliness: Form 4 filed May 19, 2026 — within the typical two-business-day window for reporting
Context
This was a routine tax-withholding event associated with RSU vesting (a common administrative disposition). Because the company withheld shares to cover taxes rather than Callahan selling shares on the open market, this transaction is not a straightforward signal of insider buying or selling appetite.
Insider Transaction Report
- Tax Payment
Class A Common Stock
[F1][F2]2026-05-15$14.52/sh−42,082$611,031→ 1,072,176 total
Footnotes (2)
- [F1]42,082 shares of Class A Common Stock were withheld by the Company for the purposes of satisfying tax withholding obligations in connection with the vesting of 82,703 Restricted Stock Units on May 15, 2026.
- [F2]The closing price of the Issuer's Class A Common Stock on May 14, 2026.