SCHEDULE 13G/A

Vertex Inc

Class A Common Stock, $0.001 par value per share · CUSIP: 92538J106

Event date: 2024-12-31

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Amanda Radcliffe

  Shares: 33,267,767.22 · Class: 21.2%

• Stefanie Thompson

  Shares: 32,980,934.59 · Class: 21.0%

• Jeffrey Westphal

  Shares: 4,521,822.24 · Class: 2.9%

• Christopher Thompson

  Shares: 118,209.96 · Class: 0.1%

• Benjamin Schmerin

  Shares: 4,221.78 · Class: 0.003%

• Conrad Radcliffe

  Shares: 2,731,647.38 · Class: 1.7%

• Kailey Radcliffe

  Shares: 5,294,874.75 · Class: 3.4%

• Antoinette Capik

  Shares: 5,294,874.75 · Class: 3.4%

• Anne Marie Westphal

  Shares: 578,074.00 · Class: 0.4%

• Kyle Westphal

  Shares: 1,211,100.00 · Class: 0.8%

• Jacob Westphal

  Shares: 745,706.00 · Class: 0.5%

• Melanie DeStefano

  Shares: 1,941,750.00 · Class: 1.2%

• Samantha Lucas

  Shares: 1,969,895.23 · Class: 1.3%

• Mackenzie Lucas

  Shares: 1,941,750.00 · Class: 1.2%

• Andrea Schmerin

  Shares: 1,983,967.84 · Class: 1.3%

• Constance Thompson

  Shares: 112,580.92 · Class: 0.1%

• Jenifer Westphal

  Shares: 0.00 · Class: 0.0%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.