[8-K] SES AI Corp Reports Material Event

Rhea-AI Filing Summary

SES AI Corporation reported a Board change. Dr. Jang Wook Choi notified the company on November 6, 2025 of his intention to resign from the Board of Directors, effective November 10, 2025, due to personal reasons.

The company stated that his resignation is not the result of any disagreement with management, the board, operations, policies, or practices. This is an administrative governance update disclosed via Form 8-K.

Insights

Corporate governance analyst

Routine board change; limited direct impact.

SES AI Corporation disclosed that Dr. Jang Wook Choi will resign from the Board effective November 10, 2025, citing personal reasons. The company explicitly notes the move is not due to disagreements with management or policies.

In governance terms, such changes are common and typically administrative unless tied to strategic disputes or performance issues, which are not indicated here. The filing provides clear timing and rationale, suggesting operational continuity.

Subsequent disclosures may identify any board reassignments or committee shifts, but none are indicated in the excerpt. Based on the stated facts, the investment thesis remains unchanged.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 6, 2025

SES AI CORPORATION

(Exact name of registrant as specified in its charter)

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Delaware		001-39845		88-0641865
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

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SES AI Corporation

35 Cabot Road

Woburn, MA 01801

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (339) 298-8750

N/A

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

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☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
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☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
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☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
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☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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Securities registered pursuant to Section 12(b) of the Act

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Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Class A common stock, $0.0001 par value per share		SES		The New York Stock Exchange
Warrants, each exercisable for one share of Class A common stock at an exercise price of $11.50 per share		SES WS		The New York Stock Exchange

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act  ☐

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Item 5.02Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On November 6, 2025, Dr. Jang Wook Choi notified SES AI Corporation (the “Company”) of his intention to resign from the Board of Directors (the “Board”) of the Company effective November 10, 2025 due to personal reasons. Dr. Choi’s resignation is not the result of any disagreement on any matter relating to the Company’s management, board of directors, operations, policies or practices.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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​	SES AI Corporation
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Date: November 7, 2025	By:	/s/ Jing Nealis
​	Name:	Jing Nealis
​	Title:	Chief Financial Officer

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FAQ

What did SES (SES) announce in this filing?

SES AI Corporation reported that Dr. Jang Wook Choi will resign from its Board of Directors.

When is Dr. Jang Wook Choi’s resignation effective at SES (SES)?

The resignation is effective on November 10, 2025.

Why is Dr. Jang Wook Choi resigning from the SES (SES) Board?

He is resigning due to personal reasons.

Did SES (SES) report any disagreement related to this resignation?

No. The company stated the resignation is not due to any disagreement regarding management, the board, operations, policies, or practices.

What form did SES (SES) use to disclose this change?

The change was disclosed in a Form 8-K under Item 5.02.