SEC Insider Transactions from Gunderson Thomas James.

Last updated: 2026-03-14 11:37 UTC | Total transactions: 14

Gunderson Thomas James has filed 14 insider transactions across 2 companies since May 2023.

Most recent transaction: a grant/award of 2134 shares of TransMedics Group, Inc. ($TMDX) on May 22, 2025.

Activity breakdown: 0 open-market purchases and 1 sale.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
May 22, 2025 TransMedics Group, Inc. $TMDX Gunderson Thomas James Not found A Common Stock 2134 $0.00 4,059.0000 35,216,837 110.86% 0.01%
May 15, 2025 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found A Common Stock, No Par Value 2152 $0.00 36,034.0000 61,278,000 6.35% 0.00%
Feb. 28, 2025 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found M Non-qualified stock options (right to buy) 25000 $0.00 21,250.0000 59,365,000 54.05% 0.04%
Feb. 28, 2025 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found M Common Stock, No Par Value 25000 $50.50 46,688.0000 59,365,000 115.27% 0.04%
Feb. 28, 2025 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found F Common Stock, No Par Value 12806 $99.95 33,882.0000 59,365,000 27.43% 0.02%
May 23, 2024 TransMedics Group, Inc. $TMDX Gunderson Thomas James Not found A Stock Option (Right to Buy) 1154 $0.00 1,154.0000 32,517,372 9999.99% 0.00%
May 23, 2024 TransMedics Group, Inc. $TMDX Gunderson Thomas James Not found A Common Stock 732 $0.00 1,925.0000 32,517,372 61.36% 0.00%
May 16, 2024 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found A Common Stock, No Par Value 2431 $0.00 21,688.0000 58,567,000 12.62% 0.00%
March 4, 2024 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found M Non-qualified stock options (right to buy) 25000 $0.00 46,250.0000 58,356,000 35.09% 0.04%
March 4, 2024 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found M Common Stock, No Par Value 25000 $34.40 37,414.0000 58,356,000 201.39% 0.04%
March 4, 2024 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found S Common Stock, No Par Value 18157 $76.03 19,257.0000 58,356,000 48.53% 0.03%
May 25, 2023 TransMedics Group, Inc. $TMDX Gunderson Thomas James Not found A Common Stock 1193 $0.00 1,193.0000 29,556,633 9999.99% 0.00%
May 25, 2023 TransMedics Group, Inc. $TMDX Gunderson Thomas James Not found A Stock Option (Right to Buy) 1916 $0.00 1,916.0000 29,556,633 9999.99% 0.01%
May 18, 2023 MERIT MEDICAL SYSTEMS INC $MMSI Gunderson Thomas James Not found A Common Stock, No Par Value 2262 $0.00 12,414.0000 58,183,000 22.28% 0.00%