🕵️ Lantheus Holdings, Inc. ($LNTH)
SEC insider & ownership activity, last 12 months · CIK 1521036 · every row links its SEC filing
Over the last 12 months insiders sold $382.6M with no open-market buying against it. Farallon Partners, L.L.C. sold $191.2M in discretionary trades (Aug). Janus Henderson Group PLC trimmed 8.6% → 7.4%. No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 3 sellers, $382.6M (5 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Farallon Partners, L.L.C. | 0 | – | 2 | $191.2M | Aug 20, 2025 |
| Patel, Rajiv A. | 0 | – | 2 | $191.2M | Aug 20, 2025 |
| Blanchfield Paul | 0 | – | 1 | $164K | Aug 13, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Joshua J. Dapice | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Dreyfuss, Philip D. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Hannah E. Dunn | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Gehani, Varun N. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Giauque, Nicolas | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Husen, Avner A. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| KIM, David T. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| LINN, Michael G. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| LUO Patrick (CHENG) | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Roberts, JR., Thomas G. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Edric C. Saito | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Daniel S. Short | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Spokes, Andrew J. M. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Warren, JOHN R. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Wehrly, MARK C. | 8.2% | 13G | Feb 5, 2026 | filing ↗ | |
| Farallon Partners, L.L.C. | 8.0% | 13G | Feb 5, 2026 | filing ↗ | |
| Janus Henderson Group PLC | 7.4% | 13G | May 15, 2026 | filing ↗ | |
| FMR LLC | 6.5% | 13G | Nov 5, 2025 | filing ↗ | |
| Abigail P. Johnson | 6.5% | 13G | Nov 5, 2025 | filing ↗ | |
| Vanguard Capital Management | 5.2% | 13G | Apr 30, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Blanchfield Paul | $450K | Feb 2, 2026 | filing ↗ |
| Blanchfield Paul | $502K | Jan 6, 2026 | filing ↗ |
| Blanchfield Paul | $218K | Dec 12, 2025 | filing ↗ |
| Blanchfield Paul | $687K | Nov 26, 2025 | filing ↗ |
| Blanchfield Paul | $871K | Nov 14, 2025 | filing ↗ |
| Blanchfield Paul | $164K | Aug 13, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Material Modifications to Rights of Security Holders (3.03) | Apr 30, 2026 | filing ↗ |
| Officer/director changes (5.02) | Apr 30, 2026 | filing ↗ |
| Charter/bylaw changes (5.03) | Apr 30, 2026 | filing ↗ |
| Shareholder vote (5.07) | Apr 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 30, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Officer/director changes (5.02) | Nov 6, 2025 | filing ↗ |
| Earnings (2.02) | Oct 31, 2025 | filing ↗ |
| Officer/director changes (5.02) | Oct 31, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 31, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 31, 2025 | filing ↗ |
| Officer/director changes (5.02) | Aug 7, 2025 | filing ↗ |
| Earnings (2.02) | Aug 6, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 6, 2025 | filing ↗ |
| Other events (8.01) | Aug 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2025 | filing ↗ |