| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Smith Claiborne Benson | Gen Counsel, Corp Secretary | C/O ARQ, INC, 8051 E. MAPLEWOOD AVE, STE 210, GREENWOOD VILLAGE | /s/ Claiborne B. Smith | 16 Mar 2026 | 0002021219 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ARQ | Common Stock | Purchase | $1,918 | +1,000 | +1% | $1.92 | 101,491 | 12 Mar 2026 | Direct | |
| transaction | ARQ | Common Stock | Purchase | $1,918 | +1,000 | +0.99% | $1.92 | 102,491 | 16 Mar 2026 | Direct |