Kyle Pilkington - 22 May 2026 Form 4 Insider Report for SES AI Corp (SES)

Reporting relationship: CHIEF LEGAL OFFICER
Issuer ticker: SES
Reported as of: 22 May 2026
Net transaction value: -$30,008
SEC form: 4
Accepted by SEC: 27 May 2026, 17:30:07 UTC
Prior SEC filing: 20 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Kyle Pilkington

Key filing fact

Kyle Pilkington filed Form 4 for SES AI Corp (SES) on 27 May 2026.

Key facts

This page summarizes Kyle Pilkington's Form 4 filing for SES AI Corp (SES).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 27 May 2026, 17:30.

Change

Previous filing in this sequence was filed on 20 May 2026.
Current net transaction value: -$30,008.

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 0001937313 Primary reporting owner

Pilkington Kyle

Relationship: CHIEF LEGAL OFFICER
Address: C/O SES AI CORPORATION, 35 CABOT ROAD, WOBURN
Signature: /s/ Kyle Pilkington
Signature date: 27 May 2026

Reported non-derivative transactions

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

SES transaction

Class A Common Stock

Sale

Transaction value: $30,008
Shares: -25,000
Change %: -2.4%
Price: $1.20
Shares after: 1,023,548
Date: 22 May 2026
Ownership: Direct
Footnotes: F1, F2, F3

^* 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 3 footnotes

Footnote F1

The 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 November 12, 2025.

Footnote F2

The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.20 to $1.21, 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 F3

Includes 733,646 shares of Class A Common Stock underlying RSUs, which are subject to forfeiture until they vest.