X0609 4 2026-10-05 false 0001811414 QuantumScape Corp QS 0001834249 Holme Timothy false C/O QUANTUMSCAPE CORPORATION 1730 TECHNOLOGY DRIVE SAN JOSE CA 95110 false true false false CHIEF TECHNOLOGY OFFICER true Class A Common Stock 2026-10-05 4 C false 14186.00 0.00 A 1597261.00 D Class A Common Stock 2026-10-05 4 S false 75000.00 4.5401 D 1522261.00 D Class A Common Stock 2026-10-05 4 C false 22500.00 0.00 A 22500.00 I By: The Holme 2020 Irrevocable Trust Class A Common Stock 2026-10-05 4 S false 22500.00 4.5401 D 0.00 I By: The Holme 2020 Irrevocable Trust Class A Common Stock 2026-10-05 4 C false 22500.00 0.00 A 22500.00 I By: Trusts Class A Common Stock 2026-10-05 4 S false 22500.00 4.5401 D 0.00 I By: Trusts Class B Common Stock 2026-10-05 4 C false 14186.00 0.00 D Class A Common Stock 14186.00 6992361.00 D Class B Common Stock 2026-10-05 4 C false 22500.00 0.00 D Class A Common Stock 22500.00 1167357.00 I By: The Holme 2020 Irrevocable Trust Class B Common Stock 2026-10-05 4 C false 22500.00 0.00 D Class A Common Stock 22500.00 1305000.00 I By: Trusts The exercise and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 10, 2026. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.465 to $4.635, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4. Includes 1,522,261 shares represented by restricted stock units ("RSUs") and performance restricted stock units ("PSUs"). Each RSU/PSU represents the Reporting Person's right to receive one share of Class A Common Stock of the Issuer. The RSUs vest each quarter and the PSUs vest upon achievement of certain performance milestones, in both cases subject to the Reporting Person's continued service as of each vesting date. The Reporting Person is a Co-Trustor of the trusts and his family members are beneficiaries of the trusts. Each share of Class B Common Stock is convertible at any time into Class A Common Stock on a one-to-one basis at the Reporting Person's election and has no expiration date. /s /Michael O McCarthy III, attorney-in-fact 2026-10-07