SEC Insider Transactions from Matthews Shawn.

Last updated: 2026-03-14 11:53 UTC | Total transactions: 11

Matthews Shawn has filed 11 insider transactions across 3 companies since August 2024.

Most recent transaction: a transaction of 75000 shares of HCM IV Acquisition Corp. ($HACQ) on February 11, 2026.

Set Up your own filters →
Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Feb. 11, 2026 HCM IV Acquisition Corp. $HACQ Matthews Shawn Chairman and CEO J Class B Ordinary Shares 75000 $0.00 8,550,000.0000 0 0.87% 0.00%
Dec. 18, 2025 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Director A Restricted Stock Units 4190 $0.00 4,190.0000 81,771,423 9999.99% 0.01%
Dec. 18, 2025 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Director A Restricted Stock Units 735 $0.00 4,925.0000 81,771,423 17.54% 0.00%
Nov. 6, 2025 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Director J Common Stock, par value $0.0001 per share 2920000 $0.00 3,288,514.0000 0 47.03% 0.00%
Nov. 6, 2025 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Director J Warrants 3500000 $0.00 2,042,599.0000 0 63.15% 0.00%
Oct. 28, 2025 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Director J Common Stock, par value $0.0001 per share 5675000 $0.00 6,208,514.0000 0 1063.70% 0.00%
Oct. 28, 2025 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Director J Warrants 4275000 $11.50 4,275,000.0000 0 50.00% 0.00%
Oct. 28, 2025 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Director J Common Stock, par value $0.0001 per share 533514 $0.00 6,208,514.0000 0 9.40% 0.00%
Oct. 28, 2025 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Director J Warrants 1267599 $11.50 1,267,599.0000 0 50.00% 0.00%
July 31, 2025 HCM III ACQUISITION CORP. $HCMA Matthews Shawn Chairman and CEO J Class B Ordinary Shares 75000 $0.00 8,358,333.0000 0 0.89% 0.00%
Aug. 19, 2024 Terrestrial Energy Inc. /DE/ $IMSR Matthews Shawn Chairman and CEO J Class B Ordinary Shares 75000 $0.00 5,675,000.0000 0 1.30% 0.00%