SES AI CFO uses 36,145 shares for RSU taxes

SES AI Corp’s Chief Financial Officer, Nealis Jing, reported a routine tax-related share disposition.

Rhea-AI Filing Summary

SES AI Corp’s Chief Financial Officer, Nealis Jing, reported a routine tax-related share disposition. On this date, 36,145 shares of Class A Common Stock were withheld at $1.10 per share to cover withholding tax obligations tied to the vesting of restricted stock units, and these shares were not sold on the market.

After this withholding, Jing directly holds 2,305,943 shares of Class A Common Stock, including 836,871 shares underlying restricted stock units that remain subject to forfeiture until they vest.

Insider Trade Summary

Exercise Price or Tax Liability: 36,145 shares

Exercise Price or Tax Liability 1 txn

Insider Nealis Jing

Role CHIEF FINANCIAL OFFICER

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Class A Common Stock	36,145	$1.10	$40K

Holdings After Transaction: Class A Common Stock — 2,305,943 shares (Direct)

Footnotes (2)

1. F1. Represents shares withheld to cover the Reporting Person's withholding tax obligations in connection with the vesting of restricted stock units ("RSUs"). These shares were not sold by the Reporting Person.
2. F2. Includes 836,871 shares of Class A Common Stock underlying restricted stock units, which are subject to forfeiture until they vest.

Key Figures

Shares withheld for taxes: 36,145 shares Withholding price per share: $1.10 per share Shares held after transaction: 2,305,943 shares +1 more

4 metrics

Shares withheld for taxes 36,145 shares Withheld to cover RSU-related withholding tax obligations

Withholding price per share $1.10 per share Value used for the tax-withholding disposition

Shares held after transaction 2,305,943 shares Direct Class A Common Stock holdings following the Form 4 transaction

Shares underlying RSUs 836,871 shares Class A shares underlying restricted stock units subject to forfeiture until vesting

Key Terms

restricted stock units, withholding tax obligations, Class A Common Stock

3 terms

restricted stock units financial

"in connection with the vesting of restricted stock units ("RSUs")."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

withholding tax obligations financial

"shares withheld to cover the Reporting Person's withholding tax obligations"

Class A Common Stock financial

"Includes 836,871 shares of Class A Common Stock underlying restricted stock units"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did SES (SES) report for CFO Nealis Jing?

SES AI Corp reported that CFO Nealis Jing had 36,145 Class A shares withheld to satisfy withholding tax obligations from restricted stock unit vesting. According to the filing, these shares were not sold in the market but used solely for tax payment.

Were SES (SES) shares sold by the CFO in this Form 4 filing?

No, the SES AI CFO did not sell shares in this filing. The 36,145 Class A shares were withheld by the company to cover RSU-related tax obligations, and the footnote explicitly states these shares were not sold by the reporting person.

How many SES (SES) shares does the CFO hold after the reported transaction?

After the tax-withholding transaction, CFO Nealis Jing directly holds 2,305,943 shares of SES AI Class A Common Stock. This total includes vested shares and restricted stock units that have not yet fully vested and remain subject to forfeiture until vesting.

What are the restricted stock units mentioned in the SES (SES) Form 4?

The filing states that 836,871 of the CFO’s Class A shares are underlying restricted stock units. These RSUs are equity awards that may convert into shares over time and are subject to forfeiture until they fully vest under their award terms.

At what price were SES (SES) shares valued for the tax withholding?

The 36,145 SES AI Class A shares withheld for taxes were valued at $1.10 per share in the transaction. This price is used in the filing to quantify the tax-withholding disposition related to the vesting restricted stock units.

Is the SES (SES) CFO’s tax-withholding transaction considered a market signal?

This transaction is characterized as a tax-withholding disposition connected to RSU vesting, not an open-market trade. Because the shares were withheld by the company rather than sold, it is typically viewed as a routine administrative event rather than a directional market signal.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/16/2026 - 05:30 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Nealis Jing

(Last) (First) (Middle)

C/O SES AI CORPORATION

35 CABOT ROAD

(Street)

WOBURN MASSACHUSETTS 01801

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SES AI Corp [ SES ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CHIEF FINANCIAL OFFICER

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/14/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	04/14/2026		F(1)		36,145(1)	D	$1.1	2,305,943(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares withheld to cover the Reporting Person's withholding tax obligations in connection with the vesting of restricted stock units ("RSUs"). These shares were not sold by the Reporting Person.

2. Includes 836,871 shares of Class A Common Stock underlying restricted stock units, which are subject to forfeiture until they vest.

	/s/ Kyle Pilkington, Attorney-in-Fact	04/16/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)