John Richard Stamm

Sits on 1 board. Last updated September 27, 2026

Time on boards

Boards served
1
Current seats
1
Board service
4 years
Director since
2023

4 years of board service in total across 1 board, counting each seat separately. Longest: Vertex Inc., 3 years.

Vertex Inc. Director
3 years ยท Since 2023

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Date Company Transaction Shares Price Value
Jun 10, 2026 Vertex Inc. Grant or award +15,638 โ€” โ€”
Jun 11, 2025 Vertex Inc. Grant or award +5,327 โ€” โ€”
Dec 6, 2024 Vertex Inc. Open-market sale โˆ’3,815 $56.11 $214,060
Nov 22, 2024 Vertex Inc. Gift โˆ’1,100 โ€” โ€”
Nov 22, 2024 Vertex Inc. Option exercise +2,500 $3.73 $9,325
Nov 22, 2024 Vertex Inc. Open-market sale โˆ’2,500 $53.81 $134,525
Sep 12, 2024 Vertex Inc. Open-market sale โˆ’5,000 $35.41 $177,050
Sep 12, 2024 Vertex Inc. Option exercise +5,000 $3.73 $18,650
Sep 12, 2024 Vertex Inc. Open-market sale โˆ’5,000 $35.44 $177,200
Aug 22, 2024 Vertex Inc. Option exercise +16,000 $3.73 $59,680
Aug 22, 2024 Vertex Inc. Open-market sale โˆ’16,000 $35.95 $575,200
Jun 12, 2024 Vertex Inc. Grant or award +5,705 โ€” โ€”
Mar 5, 2024 Vertex Inc. Open-market sale โˆ’6,500 $29.48 $191,620
Dec 15, 2023 Vertex Inc. Open-market sale โˆ’10,000 $26.85 $268,500
Aug 28, 2023 Vertex Inc. Open-market sale โˆ’10,691 $22.41 $239,585

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