LNTH (Lantheus Holdings, Inc)
Insider Trading Activity
Every open-market purchase and sale reported by LNTH officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-02 | Robert J. Marshall Jr. | CFO and Treasurer | F | — | — |
| 2026-08-19 | Kimberly Brown | Chief Accounting Officer | F | — | — |
| 2026-08-19 | Ludger Dinkelborg | See Remarks | F | — | — |
| 2026-06-03 | Mary Anne Heino | Executive Chair and CEO | F | — | — |
| 2026-06-03 | Gerard Ber | Director | F | — | — |
| 2026-05-18 | JULIA MARIE EASTLAND | Director | A | — | — |
| 2026-05-18 | James H Thrall | Director | A | — | — |
| 2026-05-18 | Gerard Ber | Director | A | — | — |
| 2026-05-18 | Minnie Baylor-Henry | Director | A | — | — |
| 2026-05-18 | Gary J Pruden | Director | A | — | — |
| 2026-05-18 | SAM R LENO | Director | A | — | — |
| 2026-05-18 | Heinz Christoph Maeusli | Director | A | — | — |
| 2026-05-18 | Phuong Khanh Morrow | Director | A | — | — |
| 2026-05-18 | Julie McHugh | Director | A | — | — |
| 2026-04-21 | Daniel Niedzwiecki | See Remarks | F | — | — |
| 2026-03-09 | Amanda Michelle Morgan | Chief Commercial Officer | MIXED | — | — |
| 2026-03-09 | Kimberly Brown | Chief Accounting Officer | MIXED | — | — |
| 2026-03-09 | Robert J. Marshall Jr. | CFO and Treasurer | MIXED | — | — |
| 2026-03-09 | Ludger Dinkelborg | See Remarks | A | — | — |
| 2026-03-09 | Daniel Niedzwiecki | See Remarks | MIXED | — | — |
| 2026-03-04 | Mary Anne Heino | Executive Chair and CEO | MIXED | — | — |
| 2026-03-04 | Robert J. Marshall Jr. | CFO and Treasurer | MIXED | — | — |
| 2026-03-04 | Amanda Michelle Morgan | Chief Commercial Officer | MIXED | — | — |
| 2026-03-04 | Daniel Niedzwiecki | See Remarks | MIXED | — | — |
| 2025-12-17 | Amanda Michelle Morgan | Chief Commercial Officer | F | — | — |
| 2025-11-19 | Mary Anne Heino | Executive Chair | A | — | — |
| 2025-09-03 | Robert J. Marshall Jr. | CFO and Treasurer | F | — | — |
| 2025-08-21 | FARALLON PARTNERS L L C/CA | 10%+ Owner | Sell | — | — |
| 2025-08-21 | MARK C WEHRLY | — | Sell | — | — |
| 2025-08-19 | Ludger Dinkelborg | See Remarks | A | — | — |
| 2025-08-19 | Kimberly Brown | Chief Accounting Officer | F | — | — |
| 2025-08-15 | Paul Blanchfield | President | Sell | — | — |
| 2025-07-17 | Paul Blanchfield | President | F | — | — |
| 2025-06-17 | Daniel Niedzwiecki | See Remarks | Sell | — | — |
| 2025-06-11 | Robert J. Marshall Jr. | CFO and Treasurer | MIXED | — | — |
| 2025-06-11 | Julie McHugh | Director | Sell | — | — |
| 2025-06-09 | Daniel Niedzwiecki | See Remarks | Sell | — | — |
| 2025-06-09 | Paul Blanchfield | President | Sell | — | — |
| 2025-06-04 | Mary Anne Heino | Director | Sell | — | — |
| 2025-05-29 | Mary Anne Heino | Director | G | — | — |
| 2025-05-16 | Gerard Ber | Director | A | — | — |
| 2025-05-16 | Minnie Baylor-Henry | Director | A | — | — |
| 2025-05-16 | Mary Anne Heino | Director | A | — | — |
| 2025-05-16 | JULIA MARIE EASTLAND | Director | A | — | — |
| 2025-05-16 | SAM R LENO | Director | A | — | — |
| 2025-05-16 | Heinz Christoph Maeusli | Director | A | — | — |
| 2025-05-16 | Julie McHugh | Director | A | — | — |
| 2025-05-16 | Phuong Khanh Morrow | Director | A | — | — |
| 2025-05-16 | Gary J Pruden | Director | MIXED | — | — |
| 2025-05-16 | James H Thrall | Director | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 7,004,395 | — |
| — | — | 6,842,227 | — |
| — | 10%+ Owner | 5,295,117 | — |
| — | 10%+ Owner | 3,585,838 | — |
| — | 10%+ Owner | 3,477,227 | — |
| — | Executive Chair and CEO | 330,515 | — |
| — | Director | 260,501 | — |
| — | CEO | 232,420 | — |
| — | CEO and President | 229,407 | — |
| — | CFO | 161,825 | — |
| — | 10%+ Owner | 122,492 | — |
| — | CFO and Treasurer | 122,071 | — |
| — | See Remarks | 117,465 | — |
| — | VP, Mfg & Ops | 111,581 | — |
| — | SVP and General Counsel | 109,472 | — |
| — | President | 108,214 | — |
| — | Chief Operations Officer | 102,440 | — |
| — | Chief Business Officer | 94,651 | — |
| — | Chief Medical Officer | 88,501 | — |
| — | SVP, Commercial | 85,658 | — |
| — | Director | 67,246 | — |
| — | Senior Vice President, Quality | 64,899 | — |
| — | Chief Commercial Officer | 64,153 | — |
| — | Director | 62,082 | — |
| — | Chief Accounting Officer | 60,420 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the LNTH quote page; the site-wide leaderboard is on the insider transactions hub.