SES AI Intends to Return to Compliance with NYSE Standard

Notice Does Not Impact Trading of the Company’s Class A Common Stock

SES AI Corporation ("SES AI") (NYSE:SES), a global leader in the development and manufacturing of AI-enhanced high-performance Li-Metal and Li-ion batteries, today announced that, on July 17, 2026, it had received a notice from the New York Stock Exchange (the "NYSE") that it is not in compliance with Section 802.01C of the NYSE Listed Company Manual because the average closing price of its Class A common stock was less than $1.00 per share over a period of 30 consecutive trading days, which is the minimum average closing price required to maintain continued listing on the NYSE.

SES AI will respond to the NYSE within 10 business days of receipt of the notice regarding its intent to cure the deficiency and return to compliance with the NYSE continued listing requirements.

The Company can regain compliance at any time within the six-month period following receipt of the NYSE notice if on the last trading day of any calendar month during the cure period the Company’s Class A common stock has a closing share price of at least $1.00 and an average closing share price of at least $1.00 over the 30 trading-day period ending on the last trading day of that month.

Under the NYSE’s rules, if the Company determines that it will cure the stock price deficiency by taking an action that will require stockholder approval at its next annual meeting of stockholders, the price condition will be deemed cured if the price promptly exceeds $1.00 per share, and the price remains above that level for at least the following 30 trading days.

The Company’s Class A common stock will continue to be listed and trade on the NYSE during this period, subject to the Company’s compliance with other NYSE continued listing standards.

About SES AI

SES AI Corp. (NYSE:SES) is powering the future of global electric transportation on land and in the air with the world’s most advanced Li-Metal batteries. SES AI is the first battery company in the world to accelerate its pace of innovation by utilizing superintelligent AI across the spectrum of its business, from research and development; materials sourcing; cell design; engineering and manufacturing; to battery health and safety monitoring. Founded in 2012, SES AI is an Li-Metal battery developer and manufacturer headquartered in Boston and with operations in Singapore, Shanghai, and Seoul. Learn more at SES.AI.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, about us and our industry that involve substantial risks and uncertainties. Forward-looking statements generally relate to future events or our future financial or operating performance. In some cases, you can identify forward-looking statements because they contain words such as "will," "goal," "plan," "target," "expect," "focus," "look forward," "opportunity," "believe," "estimate," "continue," "anticipate," "project" and "pursue" or the negative of these terms or similar expressions. These statements are based on the beliefs and assumptions of the management of the Company. Although the Company believes that its plans, intentions and expectations reflected in or suggested by these forward-looking statements are reasonable, it cannot provide assurance that it will achieve or realize these plans, intentions or expectations. Some factors that could cause actual results to differ include, but are not limited to, those described in the Company’s filings with the Securities and Exchange Commission (the "SEC"), including in the "Risk Factors" and "Management’s Discussion and Analysis of Financial Condition and Results of Operations" sections of the Company’s most recently filed Annual Report on Form 10-K and Quarterly Report on Form 10-Q. Any forward-looking statements made by us in this press release speak only as of the date on which they are made. We disclaim any obligations to update or alter these forward-looking statements in the future, whether as a result of new information, future events or otherwise, except as required by law.

SES AI may use its website as a distribution channel of material company information. Financial and other important information regarding SES AI is routinely posted on and accessible through the Company’s website at www.ses.ai. Accordingly, investors should monitor this channel, in addition to following SES AI’s press releases, Securities and Exchange Commission filings and public conference calls and webcasts.

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