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

Reporting relationship: CHIEF SCIENCE OFFICER
Issuer ticker: SES
Reported as of: 22 Jan 2026
Net transaction value: -$584,705
SEC form: 4
Accepted by SEC: 23 Jan 2026, 18:30:05 UTC
Prior SEC filing: 16 Dec 2025
Next SEC filing: 10 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Kyle Pilkington, Attorney-in-Fact

Key filing fact

Hong Gan filed Form 4 for SES AI Corp (SES) on 23 Jan 2026.

Key facts

This page summarizes Hong Gan's Form 4 filing for SES AI Corp (SES).
6 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 23 Jan 2026, 18:30.

Change

Previous filing in this sequence was filed on 16 Dec 2025.
Current net transaction value: -$584,705.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001907008 Primary reporting owner

Gan Hong

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

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SES transaction

Class A Common Stock

Options Exercise

Transaction value: $24,000
Shares: +150,000
Change %: +12%
Price: $0.1600
Shares after: 1,403,286
Date: 22 Jan 2026
Ownership: Direct
Footnotes: F1, F2

SES transaction

Class A Common Stock

Sale

Transaction value: $374,385
Shares: -150,000
Change %: -11%
Price: $2.50
Shares after: 1,253,286
Date: 22 Jan 2026
Ownership: Direct
Footnotes: F1, F2, F3

SES transaction

Class A Common Stock

Options Exercise

Transaction value: $16,000
Shares: +100,000
Change %: +8%
Price: $0.1600
Shares after: 1,353,286
Date: 23 Jan 2026
Ownership: Direct
Footnotes: F1, F2

SES transaction

Class A Common Stock

Sale

Transaction value: $250,320
Shares: -100,000
Change %: -7.4%
Price: $2.50
Shares after: 1,253,286
Date: 23 Jan 2026
Ownership: Direct
Footnotes: F1, F2, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SES transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value: $0
Shares: -150,000
Change %: -13%
Price: $0.000000
Shares after: 1,029,832
Date: 22 Jan 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 150,000
Exercise price: $0.1600
Footnotes: F1, F5

SES transaction Derivative

Stock Option (Right to Buy)

Options Exercise

Transaction value: $0
Shares: -100,000
Change %: -9.7%
Price: $0.000000
Shares after: 929,832
Date: 23 Jan 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 100,000
Exercise price: $0.1600
Footnotes: F1, F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 5 footnotes

Footnote 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.

Footnote F2

Includes 852,222 shares of Class A Common Stock underlying restricted stock units, which are subject to forfeiture until they vest.

Footnote 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.

Footnote 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.

Footnote F5

Reflects fully vested options granted on February 10, 2021.