QuantumScape Corporation (NYSE: QS) co-founder and Chief Technology Officer Timothy Holme sold approximately 120,000 shares of Class A Common Stock on September 15, 2026, totaling $610,800.

The transaction resulted in the complete liquidation of Holme’s Class A share holdings across various trusts, representing a significant reduction in his overall stake in the company.

Holme also reduced his direct holdings by 75,000 shares as part of the same September 15 transaction, according to a recent SEC Form 4 filing.

The weighted average sale price recorded in the SEC Form 4 filing was $5.09 per share, while the stock closed at $5.05 on the day of the transaction.

The disposal was carried out under a Rule 10b5-1 trading plan that Holme established on June 10, 2026, structuring the timing of sales according to a fixed, predetermined schedule.

Rule 10b5-1 plans are commonly used by corporate insiders to signal that sales are planned in advance and are not driven by access to non-public information about the company.

Following the transaction, Holme retains a direct holding of 1,583,075 shares in the company, preserving a substantial equity position despite the trust liquidation.

Of those remaining shares, 1,522,261 are Class A shares represented by restricted stock units and performance restricted stock units that are still subject to future service and performance milestones.

QuantumScape specializes in the development and commercialization of solid-state lithium-metal batteries, targeting electric vehicle powertrains as its primary application market.

The company’s business model centers on technology development, validation, and commercialization partnerships with major automotive manufacturers seeking next-generation battery solutions.

QuantumScape’s solid-state battery technology promises enhanced energy density, reduced charging times, and improved safety characteristics compared to conventional lithium-ion alternatives.

The insider sale comes as the solid-state battery sector continues to attract significant attention from automakers and investors racing to secure next-generation energy storage technology for electric vehicles.