John Richard Stamm

CIK: 0001818885

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)4 (44.4%)

Position reduction

Option Exercises (M)2 (22.2%)

Derivative conversions

Awards (A)2 (22.2%)

Compensation grants

Other (G, F, J, C, D, …)1 (11.1%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

VERX

Vertex, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (9 total)

VERX
Vertex, Inc.
Jun 10, 2026
Award(A)
Direct
15.6K shares-
VERX
Vertex, Inc.
Jun 11, 2025
Award(A)
Direct
5.3K shares-
VERX
Vertex, Inc.
Dec 6, 2024
Sale(S)
Direct
3.8K shares at avg. $56.11$214K
VERX
Vertex, Inc.
Nov 22, 2024
Gift(G)
Direct
1.1K shares-
VERX
Vertex, Inc.
Nov 22, 2024
Exercise(M)
Direct
2.5K shares at avg. $3.73$9K
VERX
Vertex, Inc.
Nov 22, 2024
Sale(S)
Direct
2.5K shares at avg. $53.81$135K
VERX
Vertex, Inc.
Sep 12, 2024
Exercise(M)
Direct
5K shares at avg. $3.73$19K
VERX
Vertex, Inc.
Sep 12, 2024
Sale(S)
Direct
5K shares at avg. $35.44$177K
VERX
Vertex, Inc.
Sep 12, 2024
Sale(S)
Direct
5K shares at avg. $35.41$177K

		Type	Shares	Price		Ownership
Jun 10, 2026	VERX Vertex, Inc.	Award(A)	15,638	-	$0	Direct
Jun 11, 2025	VERX Vertex, Inc.	Award(A)	5,327	-	-	Direct
Dec 6, 2024	VERX Vertex, Inc.	Sale(S)	3,815	$56.11	$214,060	Direct
Nov 22, 2024	VERX Vertex, Inc.	Gift(G)	1,100	-	$0	Direct
Nov 22, 2024	VERX Vertex, Inc.	Exercise(M)	2,500	$3.73	$9,335	Direct
Nov 22, 2024	VERX Vertex, Inc.	Sale(S)	2,500	$53.81	$134,525	Direct
Sep 12, 2024	VERX Vertex, Inc.	Exercise(M)	5,000	$3.73	$18,670	Direct
Sep 12, 2024	VERX Vertex, Inc.	Sale(S)	5,000	$35.44	$177,204	Direct
Sep 12, 2024	VERX Vertex, Inc.	Sale(S)	5,000	$35.41	$177,072	Direct

1-9 of 9 transactions

About Stamm John Richard

Stamm John Richard (SEC CIK 0001818885) files insider reports with the SEC as Director of Vertex, Inc. (VERX).

Signal8 holds 5 ownership filings by Stamm John Richard, all Form 4s, filed between Sep 16, 2024 and Jun 12, 2026. Those filings report 9 transactions, from Sep 12, 2024 to Jun 10, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Stamm John Richard's filings is in KING OF PRUSSIA, PA.

Recent filings by Stamm John Richard

Jun 10, 2026: Grant or award of VERX shares (Form 4, code A).
Jun 11, 2025: Grant or award of VERX shares (Form 4, code A).
Dec 6, 2024: Open-market sale of VERX shares (Form 4, code S).
Nov 22, 2024: Gift of VERX shares (Form 4, code G).
Nov 22, 2024: Option exercise of VERX shares (Form 4, code M).

Other insiders filing for Vertex, Inc. (VERX)

How to read Form 4 transaction codes