Clear Street LLC amends 13G/A for AltEnergy Acquisition Corp (AEAE)

Rhea-AI Filing Summary

AltEnergy Acquisition Corp disclosure: Clear Street LLC filed an amendment to its Schedule 13G stating it beneficially owns 0 shares of AltEnergy common stock (CUSIP 02157M108) representing 0.0% of the class. The amendment states Clear Street's beneficial ownership does not meet the 5% reporting threshold under Rule 13G and is filed to terminate its reporting obligation. The filing lists AltEnergy's principal executive office at 137 Rowayton Avenue, Rowayton, CT. The amendment is signed by John DiBacco, Head of Markets Trading, dated 05/20/2026.

Insights

Corporate Governance Analyst

Routine termination of a passive ownership filing after holdings fell below 5%.

The amendment documents that Clear Street LLC reports 0 shares and 0.0% ownership, triggering termination of its Schedule 13G reporting obligation under the 5% threshold. This is an administrative update rather than a change in AltEnergy's capital structure.

Future filings would reflect any material change in ownership; timing of any such change is not disclosed in the excerpt.

Compliance Officer

Confirms issuer and filer identification and the regulatory rationale for the amendment.

The form lists the issuer name, CUSIP 02157M108, filer name and address, and cites Item 5/Item 9 language about termination of group reporting. The signer is identified as John DiBacco with a signature date of 05/20/2026.

Cash‑flow treatment and any prior holdings history are not stated in the provided excerpt.

Key Figures

Beneficial ownership: 0 shares Percent of class: 0.0% CUSIP: 02157M108 +2 more

5 metrics

Beneficial ownership 0 shares Amount beneficially owned reported in Item 4

Percent of class 0.0% Percent of class reported in Item 4

CUSIP 02157M108 AltEnergy Acquisition Corp common stock CUSIP on cover

Signature date 05/20/2026 Date on signer signature block

Filer address 4 World Trade Center, New York, NY Clear Street LLC principal business office listed

Key Terms

Schedule 13G/A, beneficially owned, 5% reporting threshold

3 terms

Schedule 13G/A regulatory

"This amendment is being filed as the beneficial ownership of Clear Street LLC does not meet or exceed the 5% reporting threshold"

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

beneficially owned financial

"Item 4. Ownership (a) Amount beneficially owned: 0"

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.

5% reporting threshold regulatory

"does not meet or exceed the 5% reporting threshold required under 13G"

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

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Accepted by SEC EDGAR 05/21/2026 - 02:07 PM Learn about SEC filing dates

FAQ

What did Clear Street LLC report for AEAE in the 13G/A amendment?

Clear Street LLC reported it beneficially owns 0 shares of AltEnergy common stock, representing 0.0% of the class. The amendment states this falls below the 5% reporting threshold, so the filer terminated its Schedule 13G reporting obligation.

Why was the Schedule 13G/A amendment filed for AltEnergy (AEAE)?

The amendment was filed because Clear Street LLC's beneficial ownership did not meet or exceed the 5% reporting threshold required under Rule 13G. The filing states the amendment terminates that reporting obligation.

Who signed the amendment for Clear Street LLC on the AEAE filing?

The amendment was signed by John DiBacco, Head of Markets Trading, and the signature date shown is 05/20/2026. The filing lists Clear Street LLC's address as 4 World Trade Center, 150 Greenwich St, Floor 45, New York, NY.

What issuer details are included in the AEAE amendment?

The filing names the issuer as AltEnergy Acquisition Corp with principal executive offices at 137 Rowayton Avenue, Rowayton, CT 06853 and CUSIP 02157M108. No financial or transaction amounts are provided in the excerpt.

Does the amendment indicate any current holdings or planned transactions by Clear Street?

No. The amendment reports Clear Street LLC beneficially owns 0 shares (0.0%) and states the reporting obligation is terminated; it does not disclose any current purchases, sales, or planned transactions.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

AltEnergy Acquisition Corp

(Name of Issuer)

Common Stock

(Title of Class of Securities)

02157M108

(CUSIP Number)

05/05/2026

(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): 02157M108

1

Names of Reporting Persons

Clear Street LLC

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 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

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)

0.0 %

12

Type of Reporting Person (See Instructions)

BD

SCHEDULE 13G

Item 1.
(a)	Name of issuer: AltEnergy Acquisition Corp
(b)	Address of issuer's principal executive offices: 137 ROWAYTON AVENUE ROWAYTON CT, 06853
Item 2.
(a)	Name of person filing: Clear Street LLC
(b)	Address or principal business office or, if none, residence: 4 WORLD TRADE CENTER, 150 Greenwich St Floor 45 New York, NY 10007
(c)	Citizenship: United States
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 02157M108
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: 0
(b)	Percent of class: 0.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
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.
	Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity. See Item 5. This amendment is being filed as the beneficial ownership of Clear Street LLC does not meet or exceed the 5% reporting threshold required under 13G. As such, no reporting obligation existed at the time of the original filing, and this amendment is filed to terminate that reporting obligation.

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and 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.

Clear Street LLC

Signature:	John DiBacco
Name/Title:	Head of Markets Trading
Date:	05/20/2026