Arq (ARQ) director adds 77,500 shares, now holds 174,010

Rhea-AI Filing Summary

Arq, Inc. director Carol S. Eicher reported an open-market purchase of 77,500 shares of Common Stock on March 13, 2026. The weighted average purchase price was $1.9485 per share, with individual trades executed between $1.925 and $1.950. Following this transaction, she directly owns 174,010 Arq shares.

Insider Trade Summary

Net Buyer: 77,500 shares ($151,009)

Net Buy 1 txn

Insider EICHER CAROL S

Role Director

Bought 77,500 shs ($151K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	77,500	$1.9485	$151K

Holdings After Transaction: Common Stock — 174,010 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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^*

EICHER CAROL S

(Last) (First) (Middle)

8787 BAY COLONY DR., APT. 1505

(Street)

NAPLES FL 34108

(City) (State) (Zip)

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

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)
03/13/2026

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	03/13/2026		P		77,500	A	$1.9485(1)	174,010	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:

1. This price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.925 to $1.950, 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.

Remarks:

	/s/ Carol S Eicher	03/17/2026
	** 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.

FAQ

What insider transaction did Arq (ARQ) disclose in this Form 4?

Arq disclosed that director Carol S. Eicher bought 77,500 shares of Common Stock in an open-market transaction on March 13, 2026 at a weighted average price of $1.9485 per share, increasing her direct ownership to 174,010 shares.

What price did Carol S. Eicher pay for Arq (ARQ) shares?

Carol S. Eicher paid a weighted average price of $1.9485 per Arq Common Stock share. The Form 4 notes the purchases occurred through multiple trades at prices ranging from $1.925 to $1.950 per share, all on March 13, 2026.

How many Arq (ARQ) shares does the director own after the reported trade?

After the reported purchase, director Carol S. Eicher directly owns 174,010 shares of Arq Common Stock. This reflects the addition of 77,500 shares acquired in open-market transactions on March 13, 2026, as shown in the Form 4 filing.

Was the Arq (ARQ) insider trade a buy or sell transaction?

The reported Arq insider transaction was a buy. Director Carol S. Eicher executed an open-market purchase of 77,500 Common Stock shares on March 13, 2026, at a weighted average price of $1.9485 per share, according to the Form 4.

Did the Arq (ARQ) Form 4 involve any derivative securities or options?

No, the Form 4 reflects only a non-derivative Common Stock transaction. It shows an open-market purchase of 77,500 shares by director Carol S. Eicher, and the derivative securities section contains no remaining option or other derivative positions in this filing.