SES AI (NYSE: SES) CEO covers RSU taxes with 310,446 withheld shares

Rhea-AI Filing Summary

SES AI Corp CEO & Chairman Hu Qichao had 310,446 shares of Class A Common Stock withheld on March 27, 2026 to cover his withholding tax obligations from vesting restricted stock units. The shares were used for taxes and were not sold in the market.

After this tax-withholding disposition, Hu directly owns 4,078,485 shares of Class A Common Stock. This figure includes 2,272,184 shares underlying RSUs that remain subject to forfeiture until they vest.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Hu Qichao

Role CEO & CHAIRMAN

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock	310,446	$0.9873	$307K

Holdings After Transaction: Class A Common Stock — 4,078,485 shares (Direct)

Footnotes (1)

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. Includes 2,272,184 shares of Class A Common Stock underlying RSUs, which are subject to forfeiture until they vest.

Key Figures

Shares withheld for taxes: 310,446 shares Post-transaction holdings: 4,078,485 shares Unvested RSU underlying shares: 2,272,184 shares +1 more

4 metrics

Shares withheld for taxes 310,446 shares Tax-withholding disposition on March 27, 2026 for RSU vesting

Post-transaction holdings 4,078,485 shares Class A Common Stock owned directly after transaction

Unvested RSU underlying shares 2,272,184 shares Shares underlying RSUs subject to forfeiture until vesting

Reference share price $0.9873 per share Price associated with 310,446 withheld shares

Key Terms

restricted stock units ("RSUs"), withholding tax obligations, Class A Common Stock

3 terms

restricted stock units ("RSUs") financial

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

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

withholding tax obligations financial

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

Class A Common Stock financial

"Includes 2,272,184 shares of Class A Common Stock underlying RSUs"

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.

Form 4 Insider Transactions: What Each Field Means →

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^*

Hu Qichao

(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)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	CEO & CHAIRMAN

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/27/2026

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	03/27/2026		F(1)		310,446	D	$0.9873	4,078,485(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 2,272,184 shares of Class A Common Stock underlying RSUs, which are subject to forfeiture until they vest.

	/s/ Kyle Pilkington, Attorney-in-Fact	03/31/2026
	** 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)

FAQ

What did SES (SES) CEO Hu Qichao report in this Form 4 filing?

Hu Qichao reported a tax-related share disposition, where 310,446 SES AI Corp Class A Common Stock shares were withheld on March 27, 2026. These shares covered withholding tax obligations from vesting RSUs and were not sold in the open market.

How many SES AI Corp shares were withheld for taxes in this Form 4?

A total of 310,446 shares of SES AI Corp Class A Common Stock were withheld. The withholding covered Hu Qichao’s tax obligations arising from the vesting of restricted stock units, according to the filing’s footnote, and did not represent an open-market sale.

Did SES (SES) CEO Hu Qichao sell shares in this reported transaction?

No, the filing states the 310,446 shares were withheld to satisfy withholding tax obligations related to vesting RSUs. The footnote explicitly clarifies these shares “were not sold by the Reporting Person,” indicating no open-market sale occurred.

How many SES AI Corp shares does Hu Qichao own after this transaction?

Following the tax-withholding transaction, Hu Qichao directly owns 4,078,485 shares of SES AI Corp Class A Common Stock. This total includes both currently vested shares and shares underlying restricted stock units that may still be forfeited if they do not vest.

What RSU position does SES (SES) CEO Hu Qichao hold after this filing?

The filing notes that 2,272,184 shares of SES AI Corp Class A Common Stock underlie Hu Qichao’s restricted stock units. These RSUs remain subject to forfeiture until they vest, meaning he does not fully own these shares unless and until vesting conditions are met.

What was the reference price per share in Hu Qichao’s SES Form 4 transaction?

The transaction used a price of $0.9873 per SES AI Corp Class A Common Stock share. This price is associated with the 310,446 shares withheld to cover tax obligations arising from restricted stock unit vesting, as disclosed in the Form 4 details.