Hong Gan - 22 Jan 2026 Form 4 Insider Report for SES AI Corp (SES)

Role
CHIEF SCIENCE OFFICER
Signature
/s/ Kyle Pilkington, Attorney-in-Fact
Issuer symbol
SES
Transactions as of
22 Jan 2026
Net transactions value
-$584,705
Form type
4
Filing time
23 Jan 2026, 18:30:05 UTC
Previous filing
16 Dec 2025
Next filing
10 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Gan Hong CHIEF SCIENCE OFFICER C/O SES AI CORPORATION, 35 CABOT ROAD, WOBURN /s/ Kyle Pilkington, Attorney-in-Fact 23 Jan 2026 0001907008

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SES Class A Common Stock Options Exercise $24,000 +150,000 +12% $0.1600 1,403,286 22 Jan 2026 Direct F1, F2
transaction SES Class A Common Stock Sale $374,385 -150,000 -11% $2.50 1,253,286 22 Jan 2026 Direct F1, F2, F3
transaction SES Class A Common Stock Options Exercise $16,000 +100,000 +8% $0.1600 1,353,286 23 Jan 2026 Direct F1, F2
transaction SES Class A Common Stock Sale $250,320 -100,000 -7.4% $2.50 1,253,286 23 Jan 2026 Direct F1, F2, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SES Stock Option (Right to Buy) Options Exercise $0 -150,000 -13% $0.000000 1,029,832 22 Jan 2026 Class A Common Stock 150,000 $0.1600 Direct F1, F5
transaction SES Stock Option (Right to Buy) Options Exercise $0 -100,000 -9.7% $0.000000 929,832 23 Jan 2026 Class A Common Stock 100,000 $0.1600 Direct F1, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 The option exercise and sale of Class A Common Stock of the issuer was executed pursuant to a Rule 10b5-1 plan entered into by the Reporting Person on August 14, 2025.
F2 Includes 852,222 shares of Class A Common Stock underlying restricted stock units, which are subject to forfeiture until they vest.
F3 The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.48 to $2.53, 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.
F4 The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.48 to $2.56, 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.
F5 Reflects fully vested options granted on February 10, 2021.