Arq, Inc. — Director's Dealing 2025

Mar 25, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Arq, Inc. (ARQ)
CIK: 0001515156
Period of Report: 2025-03-23

Reporting Person: Hansen Stacia (Chief Accounting Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-03-23	Common Stock	A	22455	—	Acquired	79498	Direct
2025-03-24	Common Stock	S	3557	$4.68	Disposed	75941	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-03-23	Performance Share Units	$	A	22455	Acquired	2028-03-10	Common Stock (44910)	Direct

Footnotes

F1: Represents restricted stock awards granted in accordance with the Issuer's long-term incentive plan under the 2024 Omnibus Incentive Plan, as approved by stockholders on June 10, 2024. The restricted stock awards shall vest in three equal annual installments, beginning on the first anniversary of the grant date.

F2: The sale reported on this Form 4 represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock awards. The sale was made to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

F3: Each Performance Share Unit ("PSU") represents a contingent right to receive one share of the Company's common stock upon vesting of the PSU, which will occur, if at all, no later than March 10, 2028 subject to the reporting person's continuous service with the Company or its related entities and the achievement of certain pre-established goals to be measured as of December 31, 2027.

F4: Represents the maximum number of PSUs that will vest, if at all, which is 200% of the target award.