| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Leib Ryan J | Chief Accounting Officer | C/O VERTEX, INC., 2301 RENAISSANCE BLVD., KING OF PRUSSIA | /s/ Lisa Coleman, Attorney-in-Fact | 24 Feb 2026 | 0001659260 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | VERX | Class A Common Stock | Options Exercise | $0 | +4,035 | +129% | $0.000000 | 7,155 | 20 Feb 2026 | Direct | |
| transaction | VERX | Class A Common Stock | Tax liability | $16,091 | -1,263 | -18% | $12.74 | 5,892 | 20 Feb 2026 | Direct | |
| transaction | VERX | Class A Common Stock | Options Exercise | $0 | +2,313 | +39% | $0.000000 | 8,205 | 20 Feb 2026 | Direct | |
| transaction | VERX | Class A Common Stock | Tax liability | $9,963 | -782 | -9.5% | $12.74 | 7,423 | 20 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 | -4,035 | -33% | $0.000000 | 8,071 | 20 Feb 2026 | Class A Common Stock | 4,035 | Direct | F1, F2 | |
| transaction | VERX | Restricted Stock Units | Options Exercise | $0 | -2,313 | -25% | $0.000000 | 6,941 | 20 Feb 2026 | Class A Common Stock | 2,313 | Direct | F1, F3 |
| Id | Content |
|---|---|
| F1 | Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. |
| F2 | The remaining restricted stock units that will vest in two equal installments on each of February 22, 2027 and February 22, 2028 and have no expiration date. |
| F3 | The remaining restricted stock units that will vest in three equal installments on each of February 20, 2027, February 20, 2028 and February 20, 2029 and have no expiration date. |