[Form 3] Expion360 Inc. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Expion360 Inc. (XPON) filed an initial ownership report on Form 3 for its Chief Executive Officer and director, Joseph D. Hammer, with an event date of 10/17/2025. The filing states that no securities of Expion360 Inc. are beneficially owned by the reporting person. The form is filed by a single reporting person, and it includes a power of attorney authorizing Shawna Bowin to sign on Joseph D. Hammer’s behalf.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Hammer Joseph D

(Last) (First) (Middle)

C/O EXPION360 INC.

2025 SW DEERHOUND AVENUE

(Street)

REDMOND OR 97756

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/17/2025

3. Issuer Name and Ticker or Trading Symbol
Expion360 Inc. [ XPON ]

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

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

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit 24.1 - Power of Attorney

No securities are beneficially owned.

	/s/ Shawna Bowin, Attorney-in-Fact for Joseph D. Hammer	11/18/2025
	** 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 5 (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.

FAQ

What does Expion360 Inc. (XPON) disclose in this Form 3 filing?

The filing reports initial insider ownership for Chief Executive Officer and director Joseph D. Hammer and states that no securities are beneficially owned.

Who is the reporting person in this Expion360 (XPON) Form 3?

The reporting person is Joseph D. Hammer, who serves as both a director and Chief Executive Officer of Expion360 Inc.

What is the event date listed in the Expion360 (XPON) Form 3?

The event requiring the statement is dated 10/17/2025.

Does the Expion360 (XPON) CEO report owning any shares or options in this Form 3?

No. The remarks section explicitly states that no securities are beneficially owned by the reporting person.

Is this Expion360 (XPON) Form 3 filed by more than one reporting person?

No. The form indicates it is filed by one reporting person.

Who signed the Expion360 (XPON) Form 3 on behalf of the reporting person?

The form is signed by /s/ Shawna Bowin as Attorney-in-Fact for Joseph D. Hammer, pursuant to a power of attorney (Exhibit 24.1).