VERX

insider transactions

Vertex, Inc. — buys & sells by directors, officers and 10% owners (SEC Form 4).

30D 90D 1Y

Net shares · 90d

-6.5K

0 buy · 6.5K sell

Net value · 90d

-$82.4K

$0 in · $82.4K out

Sentiment · 90d

Net selling

0% buying · 100% selling

Open-market trades · 90d

0 buy · 6.5K sell

Net buy / sell volume

Tap or hover the chart for daily net volume. Green = net buying, red = net selling.

All transactions

Grant·A
Jun 10, 26

Stefanie Westphal Thompson

Director, 10% Owner

$0

15.6K sh

Own +30%
Grant·A
Jun 10, 26

John Richard Stamm

Director

$0

15.6K sh

Own +92%
Grant·A
Jun 10, 26

Philip Seth Saunders

Director

$0

15.6K sh

Own +45%
Grant·A
Jun 10, 26

Amanda Westphal Radcliffe

Director, 10% Owner

$0

15.6K sh

Own +11%
Grant·A
Jun 10, 26

Mark J Mendola

Director

$0

15.6K sh

Own +294%
Grant·A
Jun 10, 26

Bradley M Gayton

Director

$0

15.6K sh

Own +30%
Grant·A
Jun 10, 26

David Destefano

Director

$0

15.6K sh

Own +1%
Grant·A
Jun 10, 26

Eric C. Andersen

Director

$0

15.6K sh

Own +10%
Sell·S
May 28, 26

David Destefano

Director

$82.4K

6.5K sh · $12.75

Own -3%

Date▾	Insider	Role	Type	Shares	Own Δ	Price	Value
Jun 10, 2026	Stefanie Westphal Thompson	Director, 10% Owner	Grant A	15.6K	+30%	—	$0
Jun 10, 2026	John Richard Stamm	Director	Grant A	15.6K	+92%	—	$0
Jun 10, 2026	Philip Seth Saunders	Director	Grant A	15.6K	+45%	—	$0
Jun 10, 2026	Amanda Westphal Radcliffe	Director, 10% Owner	Grant A	15.6K	+11%	—	$0
Jun 10, 2026	Mark J Mendola	Director	Grant A	15.6K	+294%	—	$0
Jun 10, 2026	Bradley M Gayton	Director	Grant A	15.6K	+30%	—	$0
Jun 10, 2026	David Destefano	Director	Grant A	15.6K	+1%	—	$0
Jun 10, 2026	Eric C. Andersen	Director	Grant A	15.6K	+10%	—	$0
May 28, 2026	David Destefano	Director	Sell S	6.5K	-3%	$12.75	$82.4K

About VERX insider trading

This page tracks insider transactions for Vertex, Inc. (VERX) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.