Soluna Holdings (SLNH) director sells 18,000 preferred shares

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Soluna Holdings director William P. Phelan reported open-market sales of 18,000 shares of the company’s 9.0% Series A Cumulative Perpetual Preferred Stock. The sales occurred on June 17, 18, and 22, 2026 at prices of $10.75 and $11.00 per share. After these transactions, he directly holds 106,233 preferred shares.

Insider Trade Summary

Net Seller: 18,000 shares ($195,472)

Net Sell 3 txns

Insider Phelan William P

Role null

Sold 18,000 shs ($195K)

Type	Security	Shares	Price	Value
Sale	9.0% Series A Cumulative Perpetual Preferred Stock	3,074	$11.00	$34K
Sale	9.0% Series A Cumulative Perpetual Preferred Stock	4,813	$11.00	$53K
Sale	9.0% Series A Cumulative Perpetual Preferred Stock	10,113	$10.75	$109K

Holdings After Transaction: 9.0% Series A Cumulative Perpetual Preferred Stock — 106,233 shares (Direct, null)

Footnotes (1)

Key Figures

Total shares sold: 18,000 shares Shares sold on June 17, 2026: 10,113 shares Shares sold on June 18, 2026: 4,813 shares +3 more

6 metrics

Total shares sold 18,000 shares Net open-market sales across three transactions

Shares sold on June 17, 2026 10,113 shares Open-market sale at $10.75 per share

Shares sold on June 18, 2026 4,813 shares Open-market sale at $11.00 per share

Shares sold on June 22, 2026 3,074 shares Open-market sale at $11.00 per share

Post-transaction holdings 106,233 shares Preferred shares held directly after latest sale

Security coupon rate 9.0% Series A Cumulative Perpetual Preferred Stock dividend rate

Key Terms

9.0% Series A Cumulative Perpetual Preferred Stock, open-market sale, Form 4, non-derivative

4 terms

9.0% Series A Cumulative Perpetual Preferred Stock financial

"security_title: "9.0% Series A Cumulative Perpetual Preferred Stock""

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

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.

non-derivative financial

"transaction_type: "non-derivative""

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/22/2026 - 04:31 PM Accepted by SEC EDGAR 06/22/2026 - 04:30 PM

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

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).

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

NEW YORK

12205

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/17/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
9.0% Series A Cumulative Perpetual Preferred Stock	06/17/2026		S		10,113	D	$10.75	114,120	D
9.0% Series A Cumulative Perpetual Preferred Stock	06/18/2026		S		4,813	D	$11	109,307	D
9.0% Series A Cumulative Perpetual Preferred Stock	06/22/2026		S		3,074	D	$11	106,233	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

	/s/ Christopher Gandolfo, Attorney in Fact	06/22/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Soluna Holdings (SLNH) report for William P. Phelan?

Soluna Holdings reported that director William P. Phelan sold 18,000 shares of its 9.0% Series A Cumulative Perpetual Preferred Stock in open-market transactions. These sales were disclosed on Form 4 and reflect multiple trades over several days.

How many Soluna Holdings preferred shares did William P. Phelan sell and at what prices?

William P. Phelan sold a total of 18,000 preferred shares. The trades were executed at prices of $10.75 and $11.00 per share, reflecting open-market sale transactions in the 9.0% Series A Cumulative Perpetual Preferred Stock.

Over what dates did the Soluna Holdings (SLNH) director sell preferred stock?

The director’s preferred stock sales took place on June 17, June 18, and June 22, 2026. Each date involved open-market sale transactions in Soluna’s 9.0% Series A Cumulative Perpetual Preferred Stock, as reported in the Form 4 filing.

What type of security did William P. Phelan trade in the Soluna Holdings Form 4?

The transactions involved Soluna Holdings’ 9.0% Series A Cumulative Perpetual Preferred Stock. All reported trades were non-derivative, open-market sales of this preferred stock class, identified explicitly as such in the Form 4 data.

How many Soluna Holdings preferred shares does William P. Phelan hold after the sales?

Following the reported open-market sales, William P. Phelan directly holds 106,233 shares of Soluna Holdings’ 9.0% Series A Cumulative Perpetual Preferred Stock. This post-transaction balance is disclosed as the total shares following the latest trade.

Were the Soluna Holdings (SLNH) insider trades classified as open-market sales?

Yes. Each reported transaction is coded as an “S” sale and described as an open-market or private sale transaction. The Form 4 data labels the transaction action as an open-market sale of preferred stock on the specified dates.