Soluna Holdings (SLNH) director reports 1,300-share stock sale

Rhea-AI Filing Summary

A director of Soluna Holdings, Inc. reported an insider stock sale. On 12/16/2025, the director sold 1,300 shares of Soluna common stock at a price of $1.41 per share, as shown in the non-derivative securities table. After this transaction, the director beneficially owned 1,318,715 shares of common stock in direct ownership. The filing indicates this Form 4 was filed for one reporting person and reflects only non-derivative holdings, with no derivative securities reported in Table II.

SEC Form 4

FORM 4

UNITED 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

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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^*

Phelan William P

(Last) (First) (Middle)

C/O SOLUNA HOLDINGS, INC.

325 WASHINGTON AVENUE EXTENSION

(Street)

ALBANY NY 12205

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Soluna Holdings, Inc [ SLNH ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
12/16/2025

4. 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 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/16/2025		S		1,300	D	$1.41	1,318,715	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Christopher Gandolfo, Attorney in Fact	12/17/2025
	** 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 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.

FAQ

What insider transaction was reported in Soluna Holdings (SLNH) latest Form 4?

The filing reports that a director of Soluna Holdings, Inc. sold 1,300 shares of common stock on 12/16/2025 at a price of $1.41 per share.

How many Soluna Holdings (SLNH) shares does the reporting person own after the sale?

Following the reported transaction, the director beneficially owned 1,318,715 shares of Soluna Holdings common stock, held in direct ownership.

What type of security did the Soluna Holdings insider sell?

The transaction involved common stock of Soluna Holdings, Inc., reported in Table I as a disposition of non-derivative securities.

What was the transaction code used in the Soluna Holdings Form 4?

The transaction was coded as "S" in Table I, indicating an open-market or private sale of Soluna Holdings common stock.

Were any derivative securities reported for the Soluna Holdings insider?

Table II, which covers derivative securities such as options or warrants, shows no entries for acquired, disposed, or beneficially owned derivative securities in this filing.

What is the reporting person’s relationship to Soluna Holdings (SLNH)?

The filing indicates the reporting person is a director of Soluna Holdings, Inc., and the form is filed by one reporting person.