Xos director buys 4,062 shares at $2.60 each

The reported direct position includes unvested RSUs, while two LLC-held positions carry separate beneficial-ownership disclaimers.

Rhea-AI Filing Summary

Xos, Inc. (symbol: XOS) is the issuer of record for a Form 4 filing submitted to the SEC. Xos, Inc. director George N. Mattson purchased 4,062 common shares at $2.60 per share on September 21, 2026. His reported direct position afterward was 196,408 shares, including 60,584 unvested RSUs. The reported holdings also include 131,250 shares held by NGAC NGM Feeder LLC and 33,333 held by GNM ICBC LLC. Mattson may be deemed to beneficially own those LLC-held shares through shared control of NGAC NGM Feeder LLC and control of GNM ICBC LLC, but disclaims beneficial ownership except to the extent of his pecuniary interest. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Net Buyer: 4,062 shares

Net Buy 3 txns

Insider Mattson George N

Role Director

Bought 4,062 shs ($11K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1	4,062	$2.60	$11K
holding	Common Stock F2	--	--	--
holding	Common Stock F3	--	--	--

Holdings After Transaction: Common Stock — 196,408 shares (Direct); Common Stock — 131,250 shares (Indirect, NGAC NGM Feeder LLC); Common Stock — 33,333 shares (Indirect, GNM ICBC LLC)

Footnotes (3)

1. F1. Includes 60,584 unvested RSUs.
2. F2. Shares are held by NGAC GNM Feeder LLC ("NGAC"). The Reporting Person may be deemed to beneficially own such shares by virtue of his shared control over NGAC. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
3. F3. Shares are held by GNM ICBC LLC ("GNM ICBC"). The Reporting Person may be deemed to beneficially own such shares by virtue of his control over GNM ICBC. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

Key Figures

Common shares purchased: 4,062 shares Purchase price per share: $2.60 per share Direct position after purchase: 196,408 shares +3 more

6 metrics

Common shares purchased 4,062 shares September 21, 2026

Purchase price per share $2.60 per share September 21, 2026

Direct position after purchase 196,408 shares Includes 60,584 unvested RSUs

NGAC NGM Feeder LLC-held shares 131,250 shares Mattson may be deemed to beneficially own the shares through shared control

GNM ICBC LLC-held shares 33,333 shares Mattson may be deemed to beneficially own the shares through control

Unvested RSUs 60,584 RSUs Included in the reported direct position after purchase

Key Terms

unvested RSUs, beneficially own, pecuniary interest

3 terms

unvested RSUs financial

"Includes 60,584 unvested RSUs."

beneficially own regulatory

"may be deemed to beneficially own such shares"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

pecuniary interest financial

"except to the extent of his pecuniary interest therein"

FAQ

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

How many XOS shares did director George N. Mattson buy?

George N. Mattson purchased 4,062 Xos common shares at $2.60 per share on September 21, 2026. His reported direct position afterward was 196,408 shares, including 60,584 unvested RSUs.

What XOS shares were held through Mattson’s LLCs?

The reported holdings were 131,250 shares held by NGAC NGM Feeder LLC and 33,333 shares held by GNM ICBC LLC. Mattson may be deemed to beneficially own the first through shared control and the second through control, but disclaims beneficial ownership except to the extent of his pecuniary interest.

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

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Available on EDGAR 09/23/2026 - 04:00 PM Accepted by SEC EDGAR 09/23/2026 - 04:00 PM 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^*

Mattson George N

(Last) (First) (Middle)

C/O XOS, INC.

3550 TYBURN STREET, UNIT 100

(Street)

LOS ANGELES CALIFORNIA 90065

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Xos, Inc. [ XOS ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/21/2026

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
Common Stock	09/21/2026		P		4,062	A	$2.6	196,408(1)	D
Common Stock								131,250	I	NGAC NGM Feeder LLC(2)
Common Stock								33,333	I	GNM ICBC LLC(3)

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. Includes 60,584 unvested RSUs.

2. Shares are held by NGAC GNM Feeder LLC ("NGAC"). The Reporting Person may be deemed to beneficially own such shares by virtue of his shared control over NGAC. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

3. Shares are held by GNM ICBC LLC ("GNM ICBC"). The Reporting Person may be deemed to beneficially own such shares by virtue of his control over GNM ICBC. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

	/s/ David M. Zlotchew, Attorney-in-Fact for George N. Mattson	09/23/2026
	** 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)