J. Matthew Singleton

Sits on 1 board. Last updated September 28, 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: Viking Therapeutics Inc., 3 years.

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
Jan 2, 2026 Viking Therapeutics Inc. Grant or award +3,150 โ€” โ€”
Oct 25, 2024 Viking Therapeutics Inc. Option exercise +16,000 $4.48 $71,680
Oct 25, 2024 Viking Therapeutics Inc. Open-market sale โˆ’16,000 $79.50 $1,272,000
Sep 20, 2024 Viking Therapeutics Inc. Option exercise +10,300 $1.19 $12,257
Sep 20, 2024 Viking Therapeutics Inc. Open-market sale โˆ’10,300 $69.50 $715,850
Aug 21, 2024 Viking Therapeutics Inc. Option exercise +5,700 $1.19 $6,783
Aug 21, 2024 Viking Therapeutics Inc. Open-market sale โˆ’5,700 $69.72 $397,404
Aug 19, 2024 Viking Therapeutics Inc. Option exercise +16,000 $3.33 $53,280
Aug 19, 2024 Viking Therapeutics Inc. Open-market sale โˆ’2,500 $60.01 $150,025
Aug 19, 2024 Viking Therapeutics Inc. Open-market sale โˆ’3,047 $61.13 $186,263
Aug 19, 2024 Viking Therapeutics Inc. Open-market sale โˆ’4,509 $61.86 $278,927
Aug 19, 2024 Viking Therapeutics Inc. Open-market sale โˆ’2,055 $63.15 $129,773
Aug 19, 2024 Viking Therapeutics Inc. Open-market sale โˆ’2,388 $64.10 $153,071
Aug 19, 2024 Viking Therapeutics Inc. Open-market sale โˆ’1,501 $64.88 $97,385
Aug 14, 2024 Viking Therapeutics Inc. Option exercise +20,786 $8.00 $166,288

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