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SES AI Corp

For the period ended Dec 31, 2025. Filed Mar 4, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 4, 2026

SES$0.89-2.6%Stored close · as of Nov 10, 2026

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Contents

Item 9B. Other Information

Rule 10b5-1 Trading Arrangements

During the quarter ended December 31, 2025, no director or Section 16 officer adopted or terminated any Rule 10b 5-1 trading arrangements or non-Rule 10 b5-1 trading arrangements as defined in Item 408 of Regulation S-K except as follows:

On November 18, 2025, Jing Nealis, our Chief Financial Officer, adopted a trading plan intended to satisfy the conditions under Rule 10 b5-1(c) of the Exchange Act. Ms. Nealis’s plan is for the potential exercise of up to 550,000 vested stock options expiring on February 10, 2031, and the sale of the shares of Class A common stock underlying such stock options. The duration of the trading plan is through December 10, 2026, or earlier, upon the completion of all transactions subject to the trading plan.

On November 12, 2025, Kyle Pilkington, our Chief Legal Officer, adopted a trading plan intended to satisfy the conditions under Rule 10 b5-1(c) of the Exchange Act. Mr. Pilkington’s plan is for the potential sale of up to 150,000 shares of Class A common stock. The duration of the trading plan is through December 31, 2026, or earlier, upon the completion of all transactions subject to the trading plan.

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