Gunderson Thomas James has filed 19 insider transactions across 2 companies since May 2023.
Most recent transaction: a option exercise of 7500 shares of MERIT MEDICAL SYSTEMS INC ($MMSI) on May 20, 2026.
Activity breakdown: 0 open-market purchases and 1 sale.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 20, 2026 | MERIT MEDICAL SYSTEMS INC | $MMSI | Gunderson Thomas J. | Not found | M | Non-qualified stock options (right to buy) | 7500 | $0.00 | 0.0000 | 60,013,000 | 100.00% | 0.01% |
| May 20, 2026 | MERIT MEDICAL SYSTEMS INC | $MMSI | Gunderson Thomas J. | Not found | M | Non-qualified stock options (right to buy) | 13750 | $0.00 | 0.0000 | 60,013,000 | 100.00% | 0.02% |
| May 20, 2026 | MERIT MEDICAL SYSTEMS INC | $MMSI | Gunderson Thomas J. | Not found | M | Common Stock, No Par Value | 7500 | $52.17 | 60,741.0000 | 60,013,000 | 14.09% | 0.01% |
| May 20, 2026 | MERIT MEDICAL SYSTEMS INC | $MMSI | Gunderson Thomas J. | Not found | M | Common Stock, No Par Value | 13750 | $52.17 | 53,241.0000 | 60,013,000 | 34.82% | 0.02% |
| May 18, 2026 | MERIT MEDICAL SYSTEMS INC | $MMSI | Gunderson Thomas J. | Not found | A | Common Stock, No Par Value | 3457 | $0.00 | 39,491.0000 | 60,013,000 | 9.59% | 0.01% |
| 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 | Common Stock | 732 | $0.00 | 1,925.0000 | 32,517,372 | 61.36% | 0.00% |
| 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 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 | S | Common Stock, No Par Value | 18157 | $76.03 | 19,257.0000 | 58,356,000 | 48.53% | 0.03% |
| 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% |
| 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 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 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% |