Ma Jiong 4

What Happened
Ma Jiong, a director of SES AI Corp (SES), was granted 141,593 restricted stock units (RSUs) on May 18, 2026. The RSUs were awarded at a reported price of $0.00 (total immediate cash value $0). Per the filing, the RSUs will vest in full and convert into an equal number of Class A common shares on the first anniversary of the grant date, subject to continued service through that vesting date. This is an award/grant (A), not a purchase or sale.

Key Details

• Transaction date: 2026-05-18; Filing date (Form 4): 2026-05-20 (timely filed).
• Grant: 141,593 RSUs @ $0.00 (acquisition code A).
• Shares owned after transaction: Not specified in this Form 4.
• Footnote: RSUs represent Class A common stock and will vest in full and be deliverable on the first anniversary of the grant, subject to continued service.
• No indication of a 10b5-1 plan, tax-withholding sale, or cashless exercise in this filing.

Context
RSUs are a form of equity compensation that convert into shares if vesting conditions are met; they do not require an immediate cash purchase and do not represent an outright sale. The eventual value to the director will depend on SES AI Corp’s stock price at vesting. Grants to directors are common as compensation and do not by themselves indicate the director buying or selling stock.