Derek B. Mulvey, Interim CFO of Rivian Automotive, Inc. / DE (NASDAQ:RIVN), filed a Form 3 initial statement of beneficial ownership on October 30, 2026, disclosing a total of 296,200 shares of Class A Common Stock held directly.

Key Highlights

  • Reporting person: Derek B. Mulvey, identified as Interim CFO of Rivian Automotive, Inc. / DE (NASDAQ:RIVN)
  • Total beneficial ownership: 296,200 shares of Class A Common Stock, held directly
  • Vested shares: 73,057 shares from previously vested Restricted Stock Units (RSUs) and 1,798 shares acquired via the 2021 Employee Stock Purchase Plan
  • IPO program shares: 2,490 shares purchased through the Directed Share Program at the time of the company's Initial Public Offering
  • Unvested RSUs: 218,855 unvested RSUs with vesting scheduled across multiple tranches through August 15, 2027
  • Event date: October 30, 2026, the date of the event requiring the initial statement

Mulvey's Reported Holdings in Rivian Class A Common Stock

According to the filing, Derek B. Mulvey's total directly held position of 296,200 shares of Rivian Automotive Class A Common Stock is composed of four distinct components. The first two are already-vested: 73,057 shares resulting from previously vested RSUs, and 1,798 shares purchased under the issuer's 2021 Employee Stock Purchase Plan. An additional 2,490 shares were acquired through Rivian's Directed Share Program at the time of the company's Initial Public Offering.

The filing discloses that the remaining 218,855 shares represent unvested RSUs, with each RSU described as "a contingent right to receive one share of the Issuer's Class A Common Stock" with no expiration date. The vesting schedule for these unvested RSUs is broken into four tranches: 160 RSUs vesting on the next quarterly anniversary after August 15, 2026; 24,500 RSUs vesting over the three quarterly anniversaries after August 15, 2026; 68,803 RSUs vesting over the ten quarterly anniversaries after August 15, 2026; and 125,392 RSUs vesting 50% on February 15, 2027 and 50% on August 15, 2027, according to the filing.

Rivian Automotive, Inc. is a Delaware-incorporated electric vehicle manufacturer headquartered in Irvine, California, whose Class A Common Stock trades on NASDAQ under the symbol RIVN. The Form 3 was signed by Jamie Chung as attorney-in-fact for Mulvey on October 30, 2026, and no derivative securities were reported in Table II of the filing.

What Was Disclosed

Rivian Automotive Interim CFO Derek B. Mulvey filed a Form 3 initial beneficial ownership statement on October 30, 2026, reporting 296,200 directly held shares of Class A Common Stock, including 218,855 unvested RSUs subject to a multi-tranche vesting schedule running through August 2027.