Arq CFO buys 16,270 shares in open market

Arq, Inc.’s chief financial officer reported open-market purchases totaling 16,270 ARQ shares, split between direct and entity-held positions.

Rhea-AI Filing Summary

Arq, Inc. (ARQ) reports that its Chief Financial Officer, Shimon Steinmetz, purchased Arq common stock on September 3, 2026. He bought 7,500 shares directly at a weighted average price of $2.2178 per share, bringing his direct holdings to 350,523 shares. On the same date, an entity he controls, Steinmetz Advisory Group LLC, purchased 8,770 shares at a weighted average price of $2.2251 per share, with 8,770 shares held indirectly. The prices reflect weighted averages over trade ranges disclosed in the footnotes, and no Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Net Buyer: 16,270 shares

Net Buy 2 txns

Insider Steinmetz Shimon

Role Chief Financial Officer

Bought 16,270 shs ($36K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1	7,500	$2.2178	$17K
Purchase	Common Stock F2, F3	8,770	$2.2251	$20K

Holdings After Transaction: Common Stock — 350,523 shares (Direct); Common Stock — 8,770 shares (Indirect, By Steinmetz Advisory Group LLC)

Footnotes (3)

1. F1. This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.175 to $2.23, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this Form 4.
2. F2. This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.209 to $2.23, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this Form 4.
3. F3. The shares of Common Stock reported on this row are held by Steinmetz Advisory Group, LLC ("Steinmetz Advisory Group"). Mr. Steinmetz, the Chief Financial Officer of the Issuer, is the ultimate control person of Steinmetz Advisory Group, and an indirect beneficial owner of these shares. Mr. Steinmetz disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Key Figures

Direct shares purchased: 7,500 shares Direct purchase weighted average price: $2.2178 per share Direct holdings after transaction: 350,523 shares +3 more

6 metrics

Direct shares purchased 7,500 shares Common Stock purchased directly on September 3, 2026

Direct purchase weighted average price $2.2178 per share Direct Common Stock purchase on September 3, 2026

Direct holdings after transaction 350,523 shares Common Stock held directly after September 3, 2026 purchases

Indirect shares purchased 8,770 shares Common Stock purchased by Steinmetz Advisory Group LLC on September 3, 2026

Indirect purchase weighted average price $2.2251 per share Purchases by Steinmetz Advisory Group LLC on September 3, 2026

Total shares purchased 16,270 shares Combined direct and indirect purchases on September 3, 2026

Key Terms

weighted average price, indirect beneficial owner, pecuniary interest

3 terms

weighted average price financial

"This price is a weighted average price. These shares were purchased in multiple transactions"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

indirect beneficial owner financial

"Mr. Steinmetz ... is the ultimate control person ... and an indirect beneficial owner"

pecuniary interest financial

"Mr. Steinmetz disclaims beneficial ownership of these shares except to the extent of his pecuniary interest"

FAQ

What insider transaction did Arq, Inc. (ARQ) disclose for its CFO?

Arq, Inc. disclosed that its Chief Financial Officer, Shimon Steinmetz, reported open-market purchases of 16,270 shares of Arq common stock on September 3, 2026, combining direct holdings and purchases through an affiliated entity.

How many ARQ shares did the CFO buy directly and at what price?

The CFO purchased 7,500 shares of Arq common stock directly at a weighted average price of $2.2178 per share on September 3, 2026, in multiple trades within a price range of $2.175 to $2.23.

What are the CFO’s direct and indirect ARQ share holdings after these transactions?

After the reported trades, the CFO holds 350,523 shares of Arq common stock directly. An entity he controls, Steinmetz Advisory Group LLC, holds an additional 8,770 shares indirectly attributable to him.

Were any of the ARQ insider share purchases made under a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is marked false, indicating the reported September 3, 2026 purchases were not affirmed as being made under a Rule 10b5-1 trading plan.

What prices were paid for the ARQ shares bought through Steinmetz Advisory Group LLC?

Steinmetz Advisory Group LLC purchased 8,770 shares at a weighted average price of $2.2251 per share. The trades occurred in multiple transactions within a range of $2.209 to $2.23 on September 3, 2026.

How many ARQ shares in total did the CFO-related parties purchase on September 3, 2026?

In total, the CFO and his affiliated entity purchased 16,270 shares of Arq common stock on September 3, 2026, combining 7,500 direct shares and 8,770 indirect shares.

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

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Available on EDGAR 09/08/2026 - 05:32 PM Accepted by SEC EDGAR 09/08/2026 - 05:32 PM Learn about SEC filing dates

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^*

Steinmetz Shimon

(Last) (First) (Middle)

8051 E. MAPLEWOOD AVE.

STE. 210

(Street)

GREENWOOD VILLAGE COLORADO 80111

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Arq, Inc. [ ARQ ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/03/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/03/2026		P		7,500	A	$2.2178(1)	350,523	D
Common Stock	09/03/2026		P		8,770	A	$2.2251(2)	8,770	I	By Steinmetz Advisory Group LLC(3)

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:

1. This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.175 to $2.23, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this Form 4.

2. This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.209 to $2.23, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this Form 4.

3. The shares of Common Stock reported on this row are held by Steinmetz Advisory Group, LLC ("Steinmetz Advisory Group"). Mr. Steinmetz, the Chief Financial Officer of the Issuer, is the ultimate control person of Steinmetz Advisory Group, and an indirect beneficial owner of these shares. Mr. Steinmetz disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

Remarks:

	/s/ Shimon Steinmetz	09/08/2026
	** 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)