| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Rowland Bryan T.R. | GENERAL COUNSEL | C/O VERTEX, INC., 2301 RENAISSANCE BLVD, KING OF PRUSSIA | /s/ Lisa Coleman, Attorney-in-Fact | 12 Feb 2026 | 0001607606 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | VERX | Class A Common Stock | Options Exercise | $0 | +4,088 | +691% | $0.000000 | 4,680 | 10 Feb 2026 | Direct | F1 |
| transaction | VERX | Class A Common Stock | Tax liability | $19,954 | -1,341 | -29% | $14.88 | 3,339 | 10 Feb 2026 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | VERX | Restricted Stock Units | Options Exercise | $0 | -4,088 | -100% | $0.000000 | 0 | 10 Feb 2026 | Class A Common Stock | 4,088 | Direct | F2, F3 |
| Id | Content |
|---|---|
| F1 | Includes 460 shares acquired through the Company's Employee Stock Purchase Plan. |
| F2 | Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. |
| F3 | This restricted stock unit award is fully vested. |