Daniel Niedzwiecki, an insider at Lantheus Holdings, Inc. ($LNTH), made two open market sales of common shares totaling $950,340 over the last 365 days, with the most recent on June 13, 2025. These sales rank 5,047th among 11,678 individual insiders in our database, where the average is 8.6 million per person across 6.4 transactions on average. Niedzwiecki had 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 5, 2026 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | F | Common Stock | 1283 | $76.31 | 119,376.0000 | 69,038,000 | 1.06% | 0.00% |
| March 5, 2026 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 36692 | $0.00 | 120,659.0000 | 69,038,000 | 43.70% | 0.05% |
| March 2, 2026 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 5169 | $0.00 | 92,226.0000 | 69,038,000 | 5.94% | 0.01% |
| March 2, 2026 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | F | Common Stock | 8259 | $76.30 | 83,967.0000 | 69,038,000 | 8.96% | 0.01% |
| June 13, 2025 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 6000 | $78.74 | 87,057.0000 | 71,651,000 | 6.45% | 0.01% |
| June 5, 2025 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 6000 | $79.65 | 93,057.0000 | 71,651,000 | 6.06% | 0.01% |
| April 17, 2025 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | F | Common Stock | 178 | $101.32 | 99,057.0000 | 71,651,000 | 0.18% | 0.00% |
| March 5, 2025 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 23884 | $0.00 | 99,235.0000 | 71,651,000 | 31.70% | 0.03% |
| March 5, 2025 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Stock Option (right to buy) | 13927 | $0.00 | 13,927.0000 | 71,651,000 | 9999.99% | 0.02% |
| March 3, 2025 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 10514 | $0.00 | 88,258.0000 | 71,651,000 | 13.52% | 0.01% |
| March 3, 2025 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | F | Common Stock | 12907 | $94.86 | 75,351.0000 | 71,651,000 | 14.62% | 0.02% |
| Aug. 14, 2024 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 2500 | $97.54 | 77,744.0000 | 70,239,000 | 3.12% | 0.00% |
| May 30, 2024 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 12873 | $79.86 | 80,244.0000 | 70,239,000 | 13.82% | 0.02% |
| May 17, 2024 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | F | Common Stock | 1466 | $79.67 | 93,117.0000 | 70,239,000 | 1.55% | 0.00% |
| April 17, 2024 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | F | Common Stock | 177 | $61.48 | 94,583.0000 | 70,239,000 | 0.19% | 0.00% |
| March 5, 2024 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | F | Common Stock | 8457 | $65.36 | 94,760.0000 | 70,239,000 | 8.19% | 0.01% |
| March 4, 2024 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 6466 | $0.00 | 103,217.0000 | 70,239,000 | 6.68% | 0.01% |
| March 1, 2024 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Stock Option (right to buy) | 18043 | $0.00 | 18,043.0000 | 70,239,000 | 50.00% | 0.03% |
| March 1, 2024 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 30456 | $0.00 | 96,751.0000 | 70,239,000 | 45.94% | 0.04% |
| Sept. 15, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 2846 | $66.43 | 66,295.0000 | 70,671,000 | 4.12% | 0.00% |
| Sept. 15, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | M | Stock Option (right to buy) | 2846 | $0.00 | 0.0000 | 70,671,000 | 100.00% | 0.00% |
| Sept. 15, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | M | Common Stock | 2846 | $17.79 | 69,141.0000 | 70,671,000 | 4.29% | 0.00% |
| Aug. 11, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 4297 | $67.93 | 66,295.0000 | 70,671,000 | 6.09% | 0.01% |
| May 18, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | F | Common Stock | 1466 | $97.97 | 70,592.0000 | 70,671,000 | 2.03% | 0.00% |
| May 11, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 6113 | $98.82 | 72,058.0000 | 70,671,000 | 7.82% | 0.01% |
| April 17, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Stock Option (right to buy) | 1960 | $0.00 | 1,960.0000 | 70,671,000 | 9999.99% | 0.00% |
| April 17, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 3301 | $0.00 | 78,171.0000 | 70,671,000 | 4.41% | 0.00% |
| March 7, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 1055 | $72.15 | 74,870.0000 | 70,671,000 | 1.39% | 0.00% |
| March 6, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | S | Common Stock | 9079 | $72.56 | 75,925.0000 | 70,671,000 | 10.68% | 0.01% |
| March 2, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Stock Option (right to buy) | 7196 | $0.00 | 7,196.0000 | 70,671,000 | 9999.99% | 0.01% |
| March 2, 2022 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 12346 | $0.00 | 77,489.0000 | 0 | 18.95% | 0.00% |
| March 3, 2023 | Lantheus Holdings, Inc. | $LNTH | Niedzwiecki Daniel | See Remarks | A | Common Stock | 7515 | $0.00 | 85,004.0000 | 70,671,000 | 9.70% | 0.01% |