Yi Ray Liu - 18 May 2026 Form 4 Insider Report for SES AI Corp (SES)

Reporting relationship: CHIEF FINANCIAL OFFICER
Issuer ticker: SES
Reported as of: 18 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 20 May 2026, 17:30:17 UTC
Prior SEC filing: 06 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Kyle Pilkington, Attorney-in-Fact

Key filing fact

Yi Ray Liu filed Form 4 for SES AI Corp (SES) on 20 May 2026.

Key facts

This page summarizes Yi Ray Liu's Form 4 filing for SES AI Corp (SES).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 20 May 2026, 17:30.

Change

Previous filing in this sequence was filed on 06 May 2026.
Current net transaction value: $0.

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 0002133613 Primary reporting owner

Liu Yi Ray

Relationship: CHIEF FINANCIAL OFFICER
Address: C/O SES AI CORPORATION, 35 CABOT RD, WOBURN
Signature: /s/ Kyle Pilkington, Attorney-in-Fact
Signature date: 20 May 2026

Reported non-derivative transactions

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

SES transaction

Class A Common Stock

Award

Transaction value
Shares: +331,858
Change %
Price: $0.000000^*
Shares after: 331,858
Date: 18 May 2026
Ownership: Direct
Footnotes: F1, F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents shares of Class A common stock, par value $0.0001 per share ("Class A Common Stock"), underlying restricted stock units ("RSUs") granted to the reporting person on May 18, 2026 (the "Grant Date") pursuant to the Issuer's 2021 Incentive Award Plan. The RSUs will vest, and an equal number of shares of Class A Common Stock will be deliverable to the reporting person, in three equal installments on the first, second and third anniversaries of the Grant Date, subject to continued employment or service through each applicable vesting date.

Footnote F2

Includes 331,858 shares of Class A Common Stock underlying RSUs, which are subject to forfeiture until they vest.