Soluna (SLNH) HR chief sells 6,600 preferred shares at $10.80

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Soluna Holdings, Inc. Chief People Officer Mary Jennifer O’Reilly reported an open-market sale of 6,600 shares of the company’s 9.0% Series A Cumulative Perpetual Preferred Stock at $10.80 per share on June 8, 2026. After this sale, she directly holds 6,800 preferred shares.

Insider Trade Summary

Net Seller: 6,600 shares ($71,280)

Net Sell 1 txn

Insider OReilly Mary Jennifer

Role Chief People Officer

Sold 6,600 shs ($71K)

Type	Security	Shares	Price	Value
Sale	9.0% Series A Cumulative Perpetual Preferred Stock	6,600	$10.80	$71K

Holdings After Transaction: 9.0% Series A Cumulative Perpetual Preferred Stock — 6,800 shares (Direct, null)

Footnotes (1)

Key Figures

Shares sold: 6,600 shares Sale price: $10.80 per share Shares remaining: 6,800 shares +1 more

4 metrics

Shares sold 6,600 shares Open-market sale of preferred stock

Sale price $10.80 per share Price for 9.0% Series A preferred

Shares remaining 6,800 shares Direct preferred holdings after sale

Net insider share change -6,600 shares Net buy/sell direction is net-sell

Key Terms

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

4 terms

9.0% Series A Cumulative Perpetual Preferred Stock financial

"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.

non-derivative financial

"transaction_type": "non-derivative""

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.

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Form 4 Insider Transactions: What Each Field Means →

06/10/2026 - 05:03 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^*

OReilly Mary Jennifer

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/08/2026

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	06/08/2026		S		6,600	D	$10.8	6,800	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	06/10/2026
	** 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) disclose in this Form 4?

Soluna Holdings reported that Chief People Officer Mary Jennifer O’Reilly executed an open-market sale of 6,600 shares of its 9.0% Series A Cumulative Perpetual Preferred Stock. The transaction was recorded as a sale and reflects a reduction in her direct preferred share holdings.

How many Soluna Holdings preferred shares did the insider sell and at what price?

Mary Jennifer O’Reilly sold 6,600 shares of Soluna Holdings’ 9.0% Series A Cumulative Perpetual Preferred Stock at a price of $10.80 per share. This open-market transaction is detailed in the Form 4 as a non-derivative sale of preferred stock.

What is Mary Jennifer O’Reilly’s remaining preferred stock position in Soluna (SLNH)?

Following the reported transaction, Mary Jennifer O’Reilly directly owns 6,800 shares of Soluna’s 9.0% Series A Cumulative Perpetual Preferred Stock. This figure represents her remaining direct holdings after the sale of 6,600 preferred shares disclosed in the filing.

What type of security was involved in the Soluna Holdings insider sale?

The transaction involved Soluna Holdings’ 9.0% Series A Cumulative Perpetual Preferred Stock. This preferred security pays a stated 9.0% rate and is classified as cumulative perpetual preferred, meaning dividends accrue if unpaid and the shares have no set maturity date.

Was the Soluna insider transaction an open-market sale or another type of trade?

The Form 4 classifies the transaction as an open-market sale of non-derivative securities. The sale code is “S,” with the description indicating a sale in the open market or a private transaction, rather than a grant, option exercise, or tax-withholding event.

Does the Soluna Form 4 show any derivative securities activity for this insider?

The Form 4 does not report any derivative security transactions for Mary Jennifer O’Reilly. The derivativeSummary section is empty, indicating no option exercises, warrant transactions, or other derivative events were disclosed alongside this preferred stock sale.