SES files Rule 144 notice for 156,500 Class A shares

SES filing a Rule 144 sale notice for 156,500 shares of Class A Common stock tied to an exercise of options under a registered plan, dated 06/15/2026.

Rhea-AI Filing Summary

SES filing a Rule 144 sale notice for 156,500 shares of Class A Common stock tied to an exercise of options under a registered plan, dated 06/15/2026. The form lists the method as cash and identifies the broker as Morgan Stanley Smith Barney LLC.

The filing also reports recent dispositions by Jing L Nealis: 200,000 shares on 06/04/2026 for $267,420; 250,000 shares on 06/02/2026 for $353,625; and 96,069 shares on 05/27/2026 for $125,221.51.

Insights

Compliance Counsel

Rule 144 notice for an issuer-tied option exercise and recent reported dispositions.

The form lists 156,500 shares to be sold on 06/15/2026 as an "Exercise of Options Under a Registered Plan" with cash as the method and Morgan Stanley Smith Barney LLC as the broker. This indicates a routine Section 144 sale pathway for shares becoming eligible for resale.

Recent sale entries name Jing L Nealis with three prior dispositions and exact proceeds. Timing and cash treatment are explicitly stated in the excerpt; any further compliance context (e.g., volume limitations or holding-period satisfaction) is not provided in the excerpt.

Key Figures

Shares to be sold: 156,500 shares Prior sale: 200,000 shares Prior sale: 250,000 shares +2 more

5 metrics

Shares to be sold 156,500 shares Exercise of options under a registered plan on 06/15/2026

Prior sale 200,000 shares Sold on 06/04/2026 for $267,420

Prior sale 250,000 shares Sold on 06/02/2026 for $353,625

Prior sale 96,069 shares Sold on 05/27/2026 for $125,221.51

Broker Morgan Stanley Smith Barney LLC Listed broker for transaction

Key Terms

Exercise of Options Under a Registered Plan, Rule 144, Issuer

3 terms

Exercise of Options Under a Registered Plan regulatory

"Exercise of Options Under a Registered Plan | Issuer | 156500"

Rule 144 regulatory

"Form type: 144 (sale notice) and 'Securities To Be Sold'"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Issuer financial

"Exercise of Options Under a Registered Plan | Issuer"

FAQ

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

What does SES's Form 144 report about the 06/15/2026 transaction?

The Form 144 reports 156,500 shares of Class A Common will be sold on 06/15/2026 via an exercise of options under a registered plan, with cash listed as the method and Morgan Stanley Smith Barney LLC as broker.

Who is listed as having recent sales in the filing for SES?

The filing lists recent dispositions by Jing L Nealis: 96,069, 200,000, and 250,000 shares on 05/27/2026, 06/04/2026, and 06/02/2026, with proceeds shown for each transaction.

What broker is named for the securities to be sold in the SES Form 144?

The broker shown is Morgan Stanley Smith Barney LLC, located at 1 New York Plaza, 8th Floor, New York, NY. The filing pairs the broker entry with the scheduled 06/15/2026 sale.

Does the Form 144 indicate the sale method for the registered shares?

Yes. The Form states the sale is tied to an exercise of options under a registered plan and identifies the sale method as cash, indicating cash settlement for the exercised shares on 06/15/2026.

What proceeds are reported for Jing L Nealis's recent transactions?

Reported proceeds include $125,221.51 for 96,069 shares on 05/27/2026, $267,420 for 200,000 shares on 06/04/2026, and $353,625 for 250,000 shares on 06/02/2026.

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

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Accepted by SEC EDGAR 06/15/2026 - 04:31 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001907020
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	SES AI CORPORATION
SEC File Number	001-39845
Address of Issuer	35 CABOT RD. WOBURN MASSACHUSETTS 01801
Phone	339-298-8750
Name of Person for Whose Account the Securities are To Be Sold	JING L NEALIS
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Former Affiliate

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	156500	180334.95	325402113	06/15/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A Common	06/15/2026	Exercise of Options Under a Registered Plan	Issuer			156500	06/15/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
JING L NEALIS 35 CABOT RD. WOBURN MA 01801	Class A Common	06/04/2026	200000	267420.00
JING L NEALIS 35 CABOT RD. WOBURN MA 01801	Class A Common	06/02/2026	250000	353625.00
JING L NEALIS 35 CABOT RD. WOBURN MA 01801	Class A Common	05/27/2026	96069	125221.51

144: Remarks and Signature

Remarks
Date of Notice	06/15/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jing Nealis
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)