New 9.99% cap stake emerges in Expion360 (XPON)

Rhea-AI Filing Summary

Expion Energy, Inc. (XPON) reported that investment entity Five Narrow Lane LP has filed as a significant shareholder. Five Narrow Lane beneficially owns 96,137 shares of common stock, representing 9.99% of the class, with sole voting and dispositive power over all of these shares.

The ownership percentage is calculated based on 962,335 shares outstanding as of August 6, 2026, as referenced from Expion Energy’s Form 10‑Q for the quarter ended June 30, 2026. Five Narrow Lane’s holdings are subject to a contractually stipulated 9.99% ownership restriction, and full conversion or exercise of its securities would otherwise exceed this limit.

Key Figures

Shares beneficially owned: 96,137 shares Percent of class: 9.99% Shares outstanding: 962,335 shares +2 more

5 metrics

Shares beneficially owned 96,137 shares Common stock beneficially owned by Five Narrow Lane LP

Percent of class 9.99% Ownership percentage of Expion Energy common stock reported by Five Narrow Lane LP

Shares outstanding 962,335 shares Shares of Expion Energy common stock outstanding as of August 6, 2026

Sole voting power 96,137 shares Shares over which Five Narrow Lane LP has sole power to vote

Sole dispositive power 96,137 shares Shares over which Five Narrow Lane LP has sole power to dispose

Key Terms

beneficially owned, Sole Voting Power, Sole Dispositive Power, ownership restriction

4 terms

beneficially owned financial

"Amount beneficially owned: 96,137.00"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Voting Power financial

"Sole Voting Power 96,137.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Sole Dispositive Power financial

"Sole Dispositive Power 96,137.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

ownership restriction financial

"under a contractually stipulated 9.99% ownership restriction"

FAQ

What percentage of Expion Energy (XPON) does Five Narrow Lane LP own?

Five Narrow Lane LP beneficially owns 9.99% of Expion Energy’s common stock, based on 962,335 shares outstanding as of August 6, 2026. This corresponds to 96,137 shares over which it reports sole voting and sole dispositive power.

How many Expion Energy (XPON) shares does Five Narrow Lane LP control?

Five Narrow Lane LP reports beneficial ownership of 96,137 shares of Expion Energy common stock. It has sole voting power and sole dispositive power over all 96,137 shares, with no shared voting or dispositive power.

What ownership cap applies to Five Narrow Lane LP’s stake in XPON?

Five Narrow Lane LP’s stake is subject to a 9.99% ownership restriction. The filing states that the aggregate 96,137 shares represent the maximum amount it can beneficially control under this contractual cap, and that full conversion or exercise of its securities would otherwise exceed it.

What share count did Expion Energy (XPON) report as outstanding for this 13G?

The reported ownership percentage is based on 962,335 shares of Expion Energy common stock outstanding as of August 6, 2026, as referenced from the company’s Form 10‑Q for the quarter ended June 30, 2026.

Does Five Narrow Lane LP share voting or dispositive power over XPON shares?

No. Five Narrow Lane LP reports sole voting power over 96,137 shares and sole dispositive power over 96,137 shares, with 0 shares under shared voting or shared dispositive power.

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

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Available on EDGAR 08/24/2026 - 03:37 PM Accepted by SEC EDGAR 08/24/2026 - 03:36 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

EXPION ENERGY, INC. (f/k/a EXPION360 INC.)

(Name of Issuer)

COMMON STOCK, $0.001 PAR VALUE PER SHARE

(Title of Class of Securities)

30218B209

(CUSIP Number)

08/21/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 30218B209

1

Names of Reporting Persons

Five Narrow Lane LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

NEW YORK

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 96,137.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 96,137.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

96,137.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

9.99 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: Note to 5, 7, 9 and 11: Based on 962,335 shares outstanding as of August 6, 2026 pursuant to a Form 10-Q for the quarter ended June 30, 2026 filed on August 10, 2026 with the Securities and Exchange Commission. Note to 10: The aggregate amount in Row 9 represents the maximum amount of shares that Five Narrow Lane LP can beneficially control under a contractually stipulated 9.99% ownership restriction. The full conversion and/or exercise of Five Narrow Lane LP's securities would exceed this restriction.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: EXPION ENERGY, INC. (f/k/a EXPION360 INC.)
(b)	Address of issuer's principal executive offices: 2025 SW Deerhound Avenue, Redmond, OR 97756
Item 2.
(a)	Name of person filing: Five Narrow Lane LP
(b)	Address or principal business office or, if none, residence: 510 Madison Avenue, Suite 1401, New York, NY 10022
(c)	Citizenship: New York
(d)	Title of class of securities: COMMON STOCK, $0.001 PAR VALUE PER SHARE
(e)	CUSIP Number(s): 30218B209
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 96,137.00
(b)	Percent of class: 9.99%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 96,137.00
	(ii) Shared power to vote or to direct the vote: 0 Shares
	(iii) Sole power to dispose or to direct the disposition of: 96,137.00
	(iv) Shared power to dispose or to direct the disposition of: 0 Shares
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Five Narrow Lane LP

Signature:	/s/ Arie Rabinowitz
Name/Title:	Arie Rabinowitz/Managing Member of the General Partner
Date:	08/24/2026