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  4. [Form 4/A] Xos, Inc. Amended Insider Trading Activity

Xos (XOS) director sells 12,476 shares in July 10b5-1 plan

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

Rhea-AI Filing Summary

Xos, Inc. (XOS) discloses an amended insider trading report for director Dietmar Ostermann. The amendment corrects prior transaction codes, clarifying that three July 2026 transactions were open-market sales (Code "S") rather than dispositions coded as "D". No other details from the original Form 4 are changed.

The director sold 4,159 shares of common stock on July 15, 2026 at a weighted average price of $2.3025 per share, 4,158 shares on July 16, 2026 at a weighted average of $2.1607, and 4,159 shares on July 17, 2026 at a weighted average of $2.1485. In total, 12,476 shares were sold pursuant to a Rule 10b5-1 trading plan adopted on September 16, 2025. A related footnote states the director’s holdings include 60,584 unvested RSUs.

Positive

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Negative

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Insider OSTERMANN DIETMAR
Role Director
Sold 12,476 shs ($27K)
Type Security Shares Price Value
Sale Common Stock F1, F5, F3 4,159 $2.1485 $9K
Sale Common Stock F1, F4, F3 4,158 $2.1607 $9K
Sale Common Stock F1, F2, F3 4,159 $2.3025 $10K
Holdings After Transaction: Common Stock — 115,226 shares (Direct)
Footnotes (5)
  1. F1. 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. F2. 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. F3. Includes 60,584 unvested RSUs.
  4. F4. 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. F5. 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 sold July 15, 2026 4,159 shares Open-market sale of Xos, Inc. common stock by director on 2026-07-15
Weighted average price July 15, 2026 $2.3025 per share Shares sold at prices ranging from $2.23 to $2.34
Shares sold July 16, 2026 4,158 shares Open-market sale of Xos, Inc. common stock by director on 2026-07-16
Weighted average price July 16, 2026 $2.1607 per share Shares sold at prices ranging from $2.12 to $2.32
Shares sold July 17, 2026 4,159 shares Open-market sale of Xos, Inc. common stock by director on 2026-07-17
Weighted average price July 17, 2026 $2.1485 per share Shares sold at prices ranging from $2.11 to $2.18
Total shares sold 12,476 shares Aggregate of three open-market sales in July 2026
Unvested RSUs included in holdings 60,584 RSUs Footnote states director’s holdings include 60,584 unvested RSUs
Rule 10b5-1 trading plan regulatory
"transactions were effected pursuant to a Rule 10b5-1 trading plan"
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.
Form 4 regulatory
"The transactions reported on this Form 4 were effected"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
weighted average sales price financial
"Represents weighted average sales price. The shares were sold"
unvested RSUs financial
"Includes 60,584 unvested RSUs."
open market market
"The shares were actually sold on the open market pursuant"
An open market is a system where buying and selling of goods, services, or financial assets happen freely without restrictions or special controls. For investors, it means they can trade assets easily and quickly, which helps determine fair prices based on supply and demand. This environment encourages transparency and competition, making it easier to buy or sell with confidence.

FAQ

What does the amended Form 4/A report for XOS insider Dietmar Ostermann?
It reports that Dietmar Ostermann, a director of Xos, Inc. (XOS), sold a total of 12,476 shares of common stock in three open-market transactions in July 2026, all executed under a Rule 10b5-1 trading plan adopted on September 16, 2025.

Why was this Form 4/A amendment filed for XOS?
The amendment was filed to correct the transaction codes for trades on July 15, 16, and 17, 2026. They were initially reported with Code "D" but were actually sales (Code "S") in the open market. The filer states no other information from the original Form 4 changed.

How many XOS shares did Dietmar Ostermann sell on each date?
He sold 4,159 shares on July 15, 2026, 4,158 shares on July 16, 2026, and 4,159 shares on July 17, 2026, for a total of 12,476 shares of Xos, Inc. common stock.

What prices did the XOS shares sell for in these transactions?
The reported weighted average prices were $2.3025 per share on July 15, 2026, $2.1607 on July 16, 2026, and $2.1485 on July 17, 2026. Footnotes state the actual sale prices ranged within narrow bands around each weighted average.

Were the July 2026 XOS insider sales under a 10b5-1 trading plan?
Yes. A footnote and the filing’s checkbox state the transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 16, 2025, indicating the trades were pre-arranged under that plan.

How many unvested RSUs does the XOS director still have according to this filing?
A footnote states that the reporting person’s holdings include 60,584 unvested RSUs of Xos, Inc. common stock. The filing does not change this RSU amount; it is presented as part of the director’s equity holdings.

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

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Form 4 Insider Transactions: What Each Field Means →
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)
07/17/2026
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 Stock07/15/2026S4,159(1)D$2.3025(2)123,543(3)D
Common Stock07/16/2026S4,158(1)D$2.1607(4)119,385(3)D
Common Stock07/17/2026S4,159(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.
Remarks:
This Amendment is filed solely to correct the Transaction Codes for the transactions on July 15, 2026, July 16, 2026 and July 17, 2026. Due to an administrative error, the transactions were incorrectly reported using Code 'D'. The shares were actually sold on the open market pursuant to a Rule 10b5-1 trading plan as indicated in footnote 3, and should have been designated as Code 'S'. There are no changes to the other information reported in the original Form 4.
/s/ David M. Zlotchew, Attorney-in-Fact for Dietmar Ostermann08/26/2026
** 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