| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Quinones Carlos | Sr. VP Global Operations | C/O ORION ENGINEERED CARBONS LLC, 1700 CITY PLAZA DRIVE, SUITE 300, SPRING | /s/ Carlos J. Quinones | 23 Feb 2026 | 0001797598 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | OEC | Common Shares, no par value | Tax liability | $11,223 | -1,790 | -2.1% | $6.27 | 85,305 | 19 Feb 2026 | Direct | F1 |
| transaction | OEC | Common Shares, no par value | Award | $0 | +6,516 | +7.6% | $0.000000 | 91,821 | 19 Feb 2026 | Direct | F2 |
| transaction | OEC | Common Shares, no par value | Tax liability | $13,349 | -2,129 | -2.3% | $6.27 | 89,692 | 19 Feb 2026 | Direct | F3 |
| Id | Content |
|---|---|
| F1 | Shares withheld by the Issuer to satisfy tax withholding requirements on vesting of restricted stock units. |
| F2 | Represents the vesting and settlement of performance-based restricted stock units in shares of common stock following the satisfaction of certain performance criteria. |
| F3 | Shares withheld by the Issuer to satisfy tax withholding requirements on vesting of performance-based restricted stock units. |