Xos (XOS) director Dietmar Ostermann sells 3,351 shares and retains 79,593

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Xos, Inc. director Dietmar Ostermann reported an open-market sale of 3,351 shares of Common Stock on 2026-06-08 at a weighted average price of $4.4512 per share. Footnotes state the shares were sold at prices ranging from $4.1785 to $5.1205. After this transaction, he directly holds 79,593 shares, which includes 62,377 unvested RSUs, so the sale represents only a portion of his overall stake.

Insider Trade Summary

Net Seller: 3,351 shares ($14,916)

Net Sell 1 txn

Insider OSTERMANN DIETMAR

Role null

Sold 3,351 shs ($15K)

Type	Security	Shares	Price	Value
Sale	Common Stock	3,351	$4.4512	$15K

Holdings After Transaction: Common Stock — 79,593 shares (Direct, null)

Footnotes (1)

Represents weighted average sales price. The shares were sold at prices ranging from $4.1785 to $5.1205. The Reporting Person will provide upon request, to the SEC, the Issuer or any security holder of the Issuer, full information regarding the number of shares sold at each separate price. Includes 62,377 unvested RSUs.

Key Figures

Shares sold: 3,351 shares Weighted average sale price: $4.4512 per share Sale price range: $4.1785–$5.1205 per share +2 more

5 metrics

Shares sold 3,351 shares Open-market sale on 2026-06-08

Weighted average sale price $4.4512 per share Common Stock sale

Sale price range $4.1785–$5.1205 per share Prices across multiple trades

Shares held after transaction 79,593 shares Direct holdings following sale

Unvested RSUs included 62,377 RSUs Part of post-transaction holdings

Key Terms

open-market sale, weighted average sales price, RSUs

3 terms

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average sales price financial

"Represents weighted average sales price. The shares were sold"

RSUs financial

"Includes 62,377 unvested RSUs."

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

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Form 4 Insider Transactions: What Each Field Means →

06/10/2026 - 05:53 PM

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^*

OSTERMANN DIETMAR

(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)
06/08/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/08/2026		S		3,351	D	$4.4512⁽¹⁾	79,593⁽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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Represents weighted average sales price. The shares were sold at prices ranging from $4.1785 to $5.1205. The Reporting Person will provide upon request, to the SEC, the Issuer or any security holder of the Issuer, full information regarding the number of shares sold at each separate price.

2. Includes 62,377 unvested RSUs.

Remarks:

	/s/ David M. Zlotchew, Attorney-in-Fact for Dietmar Ostermann	06/10/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Xos (XOS) director Dietmar Ostermann report?

Director Dietmar Ostermann reported selling 3,351 Xos common shares in an open-market transaction. The weighted average sale price was $4.4512 per share, with individual trades between $4.1785 and $5.1205, according to the Form 4 filing and its accompanying footnote disclosures.

At what prices did Dietmar Ostermann sell Xos (XOS) shares?

The reported weighted average sale price was $4.4512 per share for 3,351 Xos shares. Footnotes explain these shares were actually sold in multiple trades at prices ranging from $4.1785 up to $5.1205, and detailed breakdowns are available upon request from the reporting person.

How many Xos (XOS) shares does Dietmar Ostermann hold after this sale?

After the reported sale, Dietmar Ostermann holds 79,593 Xos common shares directly. A footnote clarifies that this figure includes 62,377 unvested restricted stock units (RSUs), meaning a significant portion of his position reflects equity awards that still remain subject to vesting conditions.

Does the Xos (XOS) Form 4 show any option exercises or derivative trades?

The Form 4 only reports a single non-derivative transaction, an open-market sale of 3,351 common shares. The derivative transaction summary shows zero exercises and no outstanding derivative entries in this filing, so the activity relates solely to common stock, not options or similar instruments.

Is the Xos (XOS) insider sale by Dietmar Ostermann a large portion of his holdings?

The sale involves 3,351 Xos shares, while post-transaction direct holdings total 79,593 shares including 62,377 unvested RSUs. This indicates the transaction covers only a fraction of his reported stake, with the majority of his equity exposure remaining after the sale described.