Louis G. Lange sold NewAmsterdam Pharma ($NAMS) shares on the open market three times in the last year, totaling about $2.2 million. His most recent sale occurred on March 11, 2026. These sales rank him 3,324th among 11,678 insiders by value sold, below the average of $8.6 million across 6.37 transactions per insider. He made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 11, 2026 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | S | Ordinary Shares | 44173 | $30.41 | 10,806.0000 | 119,000,266 | 80.35% | 0.04% |
| March 11, 2026 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | S | Ordinary Shares | 446 | $31.23 | 10,360.0000 | 119,000,266 | 4.13% | 0.00% |
| March 6, 2026 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | S | Ordinary Shares | 28186 | $29.41 | 54,979.0000 | 119,000,266 | 33.89% | 0.02% |
| March 9, 2026 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | X | Warrant (right to buy) | 44619 | $0.00 | 0.0000 | 119,000,266 | 100.00% | 0.04% |
| March 9, 2026 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | X | Ordinary Shares | 44619 | $11.50 | 54,979.0000 | 119,000,266 | 430.69% | 0.04% |
| Jan. 7, 2026 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | A | Option (right to buy) | 15300 | $0.00 | 15,300.0000 | 119,000,266 | 9999.99% | 0.01% |
| Jan. 7, 2026 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | A | Ordinary Shares | 3400 | $0.00 | 10,360.0000 | 119,000,266 | 48.85% | 0.00% |
| June 1, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | M | Ordinary Shares | 68 | $0.00 | 28,186.0000 | 94,358,067 | 0.24% | 0.00% |
| June 1, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | M | Restricted Stock Unit | 68 | $0.00 | 0.0000 | 94,358,067 | 100.00% | 0.00% |
| May 1, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | M | Ordinary Shares | 69 | $0.00 | 28,118.0000 | 94,358,067 | 0.25% | 0.00% |
| May 1, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | M | Restricted Stock Unit | 69 | $0.00 | 68.0000 | 94,358,067 | 50.36% | 0.00% |
| April 14, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | M | Restricted Stock Unit | 69 | $0.00 | 137.0000 | 94,358,067 | 33.50% | 0.00% |
| April 14, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | M | Ordinary Shares | 69 | $0.00 | 28,049.0000 | 94,358,067 | 0.25% | 0.00% |
| March 26, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | A | Restricted Stock Unit | 3308 | $0.00 | 3,308.0000 | 94,358,067 | 9999.99% | 0.00% |
| March 26, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | M | Restricted Stock Unit | 3102 | $0.00 | 206.0000 | 94,358,067 | 93.77% | 0.00% |
| March 26, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | M | Ordinary Shares | 3102 | $0.00 | 10,062.0000 | 94,358,067 | 44.57% | 0.00% |
| Jan. 7, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | A | Ordinary Shares | 6960 | $0.00 | 31,838.0000 | 94,358,067 | 27.98% | 0.01% |
| Jan. 6, 2025 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | A | Option (right to buy) | 32500 | $0.00 | 32,500.0000 | 94,358,067 | 9999.99% | 0.03% |
| Feb. 13, 2024 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | P | Ordinary Shares | 5000 | $19.00 | 24,878.0000 | 82,161,956 | 25.15% | 0.01% |
| Jan. 1, 2024 | NewAmsterdam Pharma Co N.V. | $NAMS | LANGE LOUIS G | Not found | A | Option (right to buy) | 10000 | $0.00 | 10,000.0000 | 82,161,956 | 9999.99% | 0.01% |