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  4. [Form 4] Xos, Inc. Insider Trading Activity

Xos, Inc. (XOS) director disposes 12,476 shares in 10b5-1 plan

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Xos, Inc. director Dietmar Ostermann disposed of a total of 12,476 shares of Common Stock over July 15–17, 2026 pursuant to a Rule 10b5-1 trading plan adopted on September 16, 2025. The shares were sold at weighted average prices with sale ranges between $2.11 and $2.34 per share. Following these transactions, he directly holds 115,226 shares, including 60,584 unvested RSUs.

Positive

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Negative

  • None.
Insider OSTERMANN DIETMAR
Role Director
Type Security Shares Price Value
Disposition Common Stock 4,159 $2.1485 $9K
Disposition Common Stock 4,158 $2.1607 $9K
Disposition Common Stock 4,159 $2.3025 $10K
Holdings After Transaction: Common Stock — 115,226 shares (Direct)
Footnotes (1)
  1. The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 16, 2025. Represents weighted average sales price. The shares were sold at prices ranging from $2.23 to $2.34. 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 60,584 unvested RSUs. Represents weighted average sales price. The shares were sold at prices ranging from $2.12 to $2.32. 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. Represents weighted average sales price. The shares were sold at prices ranging from $2.11 to $2.18. 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.
Shares disposed July 15, 2026 4,159 shares Common Stock disposition on July 15, 2026
Price range July 15, 2026 $2.23–$2.34 per share Weighted average sales price range on July 15, 2026
Shares disposed July 16, 2026 4,158 shares Common Stock disposition on July 16, 2026
Price range July 16, 2026 $2.12–$2.32 per share Weighted average sales price range on July 16, 2026
Shares disposed July 17, 2026 4,159 shares Common Stock disposition on July 17, 2026
Price range July 17, 2026 $2.11–$2.18 per share Weighted average sales price range on July 17, 2026
Post-transaction holdings 115,226 shares Directly owned Common Stock after July 17, 2026 transaction
Unvested RSUs included 60,584 RSUs Unvested RSUs included in post-transaction holdings
Rule 10b5-1 trading plan financial
"effected pursuant to a Rule 10b5-1 trading plan adopted"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average sales price financial
"Represents weighted average sales price. The shares were sold"
unvested RSUs financial
"Includes 60,584 unvested RSUs."
Disposition to issuer financial
"transaction code description: Disposition to issuer"

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FAQ

What did XOS director Dietmar Ostermann report in this Form 4?
Dietmar Ostermann reported disposing of 12,476 shares of Xos, Inc. Common Stock over three days in July 2026. These transactions were executed under a Rule 10b5-1 trading plan, with detailed share counts and price ranges disclosed for each day.

How many XOS shares did Dietmar Ostermann sell on each reported date?
Ostermann disposed of 4,159 shares on July 15, 4,158 shares on July 16, and 4,159 shares on July 17, 2026. All transactions involved Xos, Inc. Common Stock and are reported as dispositions of non-derivative securities.

What price ranges applied to Dietmar Ostermann’s XOS share sales?
The Form 4 reports weighted average sale prices with ranges. On July 15, prices ranged from $2.23–$2.34; on July 16, from $2.12–$2.32; and on July 17, from $2.11–$2.18, with full breakdowns available on request.

Were Dietmar Ostermann’s XOS transactions under a Rule 10b5-1 plan?
Yes. All reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on September 16, 2025. Such plans pre-schedule trades, reducing the significance of trade timing as an indicator of insider sentiment.

How many XOS shares does Dietmar Ostermann hold after these trades?
After the July 17, 2026 disposition, Ostermann directly holds 115,226 shares of Xos, Inc. Common Stock. This figure includes 60,584 unvested RSUs, as specifically noted in the Form 4 footnotes.

What role does Dietmar Ostermann have at Xos, Inc. (XOS)?
Dietmar Ostermann is reported as a director of Xos, Inc. in this Form 4. He is not identified as an officer or 10% owner, and the reported transactions involve his direct ownership of Common Stock and unvested RSUs.
SEC Form 4
FORM 4UNITED 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).
X
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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock07/15/2026D4,159(1)D$2.3025(2)123,543(3)D
Common Stock07/16/2026D4,158(1)D$2.1607(4)119,385(3)D
Common Stock07/17/2026D4,159(1)D$2.1485(5)115,226(3)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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on September 16, 2025.
2. Represents weighted average sales price. The shares were sold at prices ranging from $2.23 to $2.34. 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.
3. Includes 60,584 unvested RSUs.
4. Represents weighted average sales price. The shares were sold at prices ranging from $2.12 to $2.32. 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.
5. Represents weighted average sales price. The shares were sold at prices ranging from $2.11 to $2.18. 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.
/s/ David M. Zlotchew, Attorney-in-Fact for Dietmar Ostermann07/17/2026
** Signature of Reporting PersonDate
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