| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Williamson Jeremy | Chief Operating Officer | C/O ARQ, INC., 8051 E. MAPLEWOOD AVE., SUITE 210, GREENWOOD VILLAGE | /s/ Jeremy Williamson | 03 Mar 2026 | 0001993283 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ARQ | Common Stock | Options Exercise | +68,600 | +51% | 203,888 | 27 Feb 2026 | Direct | F1 | ||
| transaction | ARQ | Common Stock | Tax liability | $64,170 | -18,282 | -9% | $3.51 | 185,606 | 27 Feb 2026 | Direct | F2 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ARQ | Performance Share Units | Options Exercise | $0 | -51,467 | -100% | $0.000000 | 0 | 27 Feb 2026 | Common Stock | 102,934 | Direct | F1, F3 |
| Id | Content |
|---|---|
| F1 | On February 27, 2026, the Compensation Committee of the Board of Directors of the Issuer determined that of the 51,467 performance share units ("PSUs") awarded to the reporting person on March 23, 2023 pursuant to the 2023 Long Term Incentive Plan under the Issuer's 2022 Omnibus Equity Incentive Plan, 68,600 PSUs vested based on the achievement of specific performance criteria over a three year performance period ended December 31, 2025. Each vested PSU represented the right to receive one share of the Issuer's common stock. |
| F2 | Reflects the withholding of shares of the Issuer's common stock to satisfy tax withholding obligations in connection with the vesting of PSUs on February 27, 2026. |
| F3 | Represents the maximum number of PSUs that were eligible to vest, if at all, which was 200% of the target award. |