Rivian CFO Claire McDonough Forfeits 730K Unvested RSUs Upon Resignation

Executive Summary

On October 30, 2026, Claire McDonough, Chief Financial Officer of Rivian Automotive, Inc. ($RIVN), reported the disposition of 730,292 shares of Class A Common Stock at $0.00 per share. This transaction represents an administrative cancellation and forfeiture of unvested Restricted Stock Units (RSUs) pursuant to her resignation effective October 30, 2026.

Transaction Details

• Security: Class A Common Stock
• Transaction Code: D (Disposition / Cancellation / Forfeiture)
• Shares Forfeited: 730,292
• Price Per Share: $0.00
• Remaining Beneficial Ownership: 88,886 shares directly held
• Section 16 Status: Ceased (Box ticked indicating no longer subject to Section 16)

Strategic & Contextual Analysis

As noted in the filing, this disposition directly corresponds to Ms. McDonough's formal departure as CFO, previously disclosed in Rivian's Current Report on Form 8-K filed on August 27, 2026. Because these shares consisted of unvested equity awards that were surrendered upon termination of employment without cash consideration, the filing does not reflect open-market insider selling activity or discretionary liquidation.