| Sep 8, 2026 (view filing)4:51 PM ET | Sep 3-4 | 5 days | Lantheus Holdings, Inc. and 1 other10% Owner | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −247.9K | $3.13 | −$776.9K | −2.2%11.3M after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Sep 4, 2026 (view filing)5:00 PM ET | Sep 2 | 2 days | Lantheus Holdings, Inc. and 1 other10% Owner | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −42.1K | $3.11 | −$131.2K | −0.4%11.5M after | |
| Sep 4, 2026 (view filing)4:58 PM ET | Aug 31-Sep 1 | 4 daysLateFiled more than 2 business days after the trade (the Form 4 deadline). A few cases, such as trades a broker makes under a 10b5-1 plan, have a longer deadline, so this flag comes from the dates alone and does not mean a rule was broken. | Lantheus Alpha Therapy, LLC10% Owner | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −113.9K | $3.14 | −$357.2K | −1.0%11.6M after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Sep 3, 2026 (view filing)4:54 PM ET | Sep 1 | 2 days | Lantheus Holdings, Inc.10% Owner | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −35.8K | $3.12 | −$111.6K | −0.3%11.6M after | |
| Sep 2, 2026 (view filing)4:36 PM ET | Aug 31 | 2 days | Lantheus Holdings, Inc.10% Owner | SSaleThe insider sold shares on the open market or in a private deal. People sell for many reasons, such as paying taxes, diversifying or following a pre-set 10b5-1 plan, so a single sale usually says less than a purchase. | −78.1K | $3.14 | −$245.6K | −0.7%11.6M after | |
| Nov 17, 2025 (view filing) | Nov 13 | 4 days | Hunt Jonathan RobertChief Accounting Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +11.0K | $2.03 | +$22.3K | +22.5%59.8K after | |
| Nov 14, 2025 (view filing) | Nov 12 | 2 days | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +9.50K | $2.10 | +$19.9K | +2,595.1%9.86K after | |
| Apr 1, 2025 (view filing) | Mar 28 | 4 days | Spoor Johan M.Chief Executive Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +22.0K | $2.24 | +$49.3K | +59.0%59.4K after | |
| Apr 1, 2025 (view filing) | Mar 28 | 4 days | Spoor Johan M.Chief Executive Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +4.65K | $2.21 | +$10.3K | New position4.65K after | |
| Apr 1, 2025 (view filing) | Mar 28-31 | 4 days | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +60.3K | $2.19 | +$132.0K | +124.0%109.0K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Apr 1, 2025 (view filing) | Mar 28 | 4 days | Graham JuanChief Financial Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +33.3K | $2.25 | +$75.0K | +1,649.3%35.4K after | |
| Apr 1, 2025 (view filing) | Mar 31 | 1 day | Woods Lori ADirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +23.5K | $2.13 | +$50.0K | +14.7%183.5K after | |
| Dec 6, 2024 (view filing) | Dec 4 | 2 days | Henson HeidiDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +26.0K | $3.85 | +$100.0K | New position26.0K after | |
| Dec 4, 2024 (view filing) | Dec 4 | Same day | Spoor Johan M.CEO | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +8.00K | $3.77 | +$30.2K | +28.3%36.3K after | |
| Nov 27, 2024 (view filing) | Nov 25 | 2 days | Hunt Jonathan RobertChief Financial Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +12.8K | $3.82 | +$49.0K | +35.7%48.8K after | 4 lotsThis row combines 4 trades of the same kind from one filing. The price is the value-weighted average. |
| Jun 18, 2024 (view filing) | Jun 17 | 1 day | Hunt Jonathan RobertChief Financial Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +1.80K | $9.82 | +$17.7K | +5.3%36.0K after | |
| Jun 18, 2024 (view filing) | Jun 14 | 4 days | Woods Lori ADirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +4.59K | $10.90 | +$50.0K | +3.0%160.0K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Jun 13, 2024 (view filing) | Jun 13 | Same day | Spoor Johan M.CEO | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +100.0K | $1.17 | +$117.0K | +266.2%137.6K after | |
| Jun 3, 2024 (view filing) | May 31 | 3 days | Hunt Jonathan RobertChief Financial Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +25.0K | $1.40 | +$35.0K | +7.9%341.7K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Jun 3, 2024 (view filing) | May 31 | 3 days | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +55.0K | $1.38 | +$75.9K | +14.9%423.8K after | |
| May 30, 2024 (view filing) | May 29 | 1 day | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +30.0K | $1.33 | +$40.0K | +8.9%368.8K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Mar 8, 2024 (view filing)11:24 AM ET | Mar 6 | 2 days | Lantheus Holdings, Inc. and 1 other10% Owner | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +60.4M | $0.95 | +$57.4M | +107.3%116.8M after | 10b5-1The filer checked the Rule 10b5-1 box: this trade was made under a trading plan set up in advance. |
| Feb 1, 2024 (view filing) | Jan 30 | 2 days | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +127.2K | $0.7131 | +$90.7K | +60.1%338.8K after | 5 lotsThis row combines 5 trades of the same kind from one filing. The price is the value-weighted average. |
| Jan 30, 2024 (view filing) | Jan 26-29 | 4 days | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +135.9K | $0.5775 | +$78.5K | +179.6%211.6K after | 7 lotsThis row combines 7 trades of the same kind from one filing. The price is the value-weighted average. |
| Jan 26, 2024 (view filing)5:38 PM ET | Jan 24-25 | 2 days | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +52.0K | $0.49 | +$25.5K | +219.6%75.7K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Jan 26, 2024 (view filing) | Jan 24 | 2 days | Puhlmann MarkusChief Medical Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +280.0K | $0.50 | +$140.0K | +25.6%1.38M after | |
| Dec 26, 2023 (view filing)5:00 PM ET | Dec 21 | 5 days | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +3.66K | $0.3283 | +$1.20K | New position3.66K after | |
| Dec 19, 2023 (view filing)7:11 PM ET | Dec 18 | 1 day | Hunt Jonathan RobertChief Financial Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +125.0K | $0.2587 | +$32.3K | +65.2%316.7K after | |
| Dec 19, 2023 (view filing)7:10 PM ET | Dec 18-19 | 1 day | Williamson Robert F IIIDirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +23.7K | $0.2947 | +$6.98K | New position23.7K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Dec 19, 2023 (view filing)7:09 PM ET | Dec 15-19 | 4 days | Puhlmann MarkusChief Medical Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +595.4K | $0.317 | +$188.7K | +119.1%1.10M after | 3 lotsThis row combines 3 trades of the same kind from one filing. The price is the value-weighted average. |
| Dec 18, 2023 (view filing)4:16 PM ET | Dec 14-15 | 4 days | Woods Lori ADirector | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +185.2K | $0.2699 | +$50.0K | +13.9%1.52M after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Dec 5, 2022 (view filing)6:09 PM ET | Dec 1-5 | 4 days | Hunt Jonathan RobertChief Financial Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +85.4K | $0.3806 | +$32.5K | +80.3%191.7K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Nov 17, 2022 (view filing)6:43 PM ET | Nov 15 | 2 days | Woods Lori ACEO | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +100.0K | $0.3354 | +$33.5K | +9.6%1.15M after | |
| Jun 9, 2022 (view filing)8:24 PM ET | Jun 8-9 | 1 day | Austin Mark JohnVP Finance/Prin Fin&Acct Offic | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +18.8K | $0.2864 | +$5.38K | +53.4%54.0K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
| Jun 9, 2022 (view filing)5:20 PM ET | Jun 7 | 2 days | Woods Lori ACEO | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +75.0K | $0.2964 | +$22.2K | +7.7%1.05M after | |
| Jun 9, 2022 (view filing)5:18 PM ET | Jun 7-8 | 2 days | Hunt Jonathan RobertChief Financial Officer | PPurchaseThe insider bought shares with their own money, on the open market or in a private deal (for example, a company's private placement). This is the code investors watch most closely: it is money the insider chose to put in. | +39.0K | $0.2862 | +$11.2K | +57.9%106.3K after | 2 lotsThis row combines 2 trades of the same kind from one filing. The price is the value-weighted average. |
