List of insiders holdings for Lantheus Holdings Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | PATEL RAJIV A Roberts Thomas G. Jr. Saito Edric C. Seybold William Short Daniel S. Spokes Andrew J M Warren John R. WEHRLY MARK C Member of a Group Owning 10% | 2025-08-21 17:27:34 | 0 3,477,227 | 3,477,227 | Form 4 |
| 2 | FARALLON PARTNERS L L C Dapice Joshua J. Dreyfuss Philip D Dunn Hannah E. FRIED RICHARD B Gehani Varun N Giauque Nicolas Kim David T Linn Michael G Luo Patrick (Cheng) Member of a Group Owning 10% 10% Owner | 2025-08-21 17:27:04 | 0 3,477,227 | 3,477,227 | Form 4 |
| 3 | Venkataraman Sriram Director 10% Owner | 2017-03-21 17:00:47 | 0 3,442,208 | 3,442,208 | Form 4 |
| 4 | Heino Mary Anne Executive Chair and CEO | 2026-03-04 16:18:58 | 323,124 266,071 | 589,195 | Form 4 |
| 5 | MARKISON BRIAN A CEO | 2025-03-07 17:43:37 | 273,767 0 | 273,767 | Form 4 |
| 6 | Bailey Jeffrey Allen CEO and President | 2015-09-03 16:54:55 | 229,407 0 | 229,407 | Form 4/A |
| 7 | Crowley John W. CFO | 2018-04-27 16:10:35 | 161,825 0 | 161,825 | Form 4 |
| 8 | Marshall Robert J. Jr. CFO and Treasurer | 2026-03-09 17:05:33 | 122,792 0 | 122,792 | Form 4 |
| 9 | Niedzwiecki Daniel See Remarks | 2026-03-09 17:06:05 | 119,376 0 | 119,376 | Form 4 |
| 10 | Dawes William C. Jr. VP, Mfg & Ops | 2017-09-01 20:11:54 | 111,581 0 | 111,581 | Form 4 |
| 11 | DUFFY MICHAEL P SVP and General Counsel | 2021-04-20 16:30:22 | 109,472 0 | 109,472 | Form 4 |
| 12 | Blanchfield Paul President | 2025-08-15 16:33:38 | 108,214 0 | 108,214 | Form 4 |
| 13 | Bolla John J. Chief Operations Officer | 2021-06-21 16:31:03 | 102,440 0 | 102,440 | Form 4 |
| 14 | Montagut Etienne Chief Business Officer | 2024-03-07 16:30:26 | 94,651 0 | 94,651 | Form 4 |
| 15 | Healey Timothy G SVP, Commercial | 2018-03-07 16:33:10 | 85,658 0 | 85,658 | Form 4 |
| 16 | Orlandi Cesare Chief Medical Officer | 2019-07-10 16:05:44 | 68,483 0 | 68,483 | Form 4 |
| 17 | LENO SAM R Director | 2025-05-16 16:39:48 | 67,652 0 | 67,652 | Form 4 |
| 18 | Walker Carol Senior Vice President, Quality | 2022-04-01 16:30:19 | 64,899 0 | 64,899 | Form 4 |
| 19 | Morgan Amanda Michelle Chief Commercial Officer | 2026-03-09 17:05:00 | 64,153 0 | 64,153 | Form 4 |
| 20 | Clemmer James C Director | 2020-03-05 16:36:36 | 62,082 0 | 62,082 | Form 4 |
| 21 | Sabens Andrea Chief Accounting Officer | 2024-07-17 16:30:34 | 60,420 0 | 60,420 | Form 4 |
| 22 | Molnar Istvan Chief Medical Officer | 2021-03-08 20:40:58 | 58,950 0 | 58,950 | Form 4 |
| 23 | Burgstahler David F Director | 2017-09-11 21:00:21 | 13,248 39,831 | 53,079 | Form 4 |
| 24 | Robertson A Frederick Director | 2021-04-30 16:51:42 | 51,798 0 | 51,798 | Form 4 |
| 25 | Thrall James H Director | 2025-05-16 16:43:20 | 40,287 0 | 40,287 | Form 4 |
| 26 | Provost Jean-Claude Chief Medical Officer | 2024-03-07 16:30:43 | 0 38,841 | 38,841 | Form 4 |
| 27 | Yao Ying Vivian Chief Human Resources Officer | 2022-03-07 20:45:04 | 36,742 0 | 36,742 | Form 4 |
| 28 | Dinkelborg Ludger See Remarks | 2026-03-09 17:05:49 | 35,731 0 | 35,731 | Form 4 |
| 29 | Maeusli Heinz Christoph Director | 2025-05-16 16:40:24 | 30,420 0 | 30,420 | Form 4 |
| 30 | Pruden Gary J Director | 2025-05-16 16:42:32 | 7,080 23,062 | 30,142 | Form 4 |
| 31 | Ber Gerard Director | 2025-05-16 16:37:36 | 27,905 0 | 27,905 | Form 4 |
| 32 | McHugh Julie Director | 2025-06-11 16:33:01 | 25,962 0 | 25,962 | Form 4 |
| 33 | Humphrey Jeffrey Chief Medical Officer | 2024-06-20 16:30:09 | 25,264 0 | 25,264 | Form 4 |
| 34 | SCHAFFER DERACE L Director | 2020-03-05 16:32:24 | 25,089 0 | 25,089 | Form 4 |
| 35 | O'Neill Patrick Director | 2015-06-25 19:34:56 | 22,715 0 | 22,715 | Form 4 |
| 36 | Pucel Kenneth Director | 2020-03-05 16:32:41 | 21,359 0 | 21,359 | Form 4 |
| 37 | Baylor-Henry Minnie Director | 2025-05-16 16:38:10 | 14,424 16 | 14,440 | Form 4 |
| 38 | Brown Kimberly Chief Accounting Officer | 2026-03-09 17:05:17 | 13,726 0 | 13,726 | Form 4 |
| 39 | EASTLAND JULIA MARIE Director | 2025-05-16 16:39:10 | 8,425 0 | 8,425 | Form 4 |
| 40 | Morrow Phuong Khanh Director | 2025-05-16 16:41:41 | 7,643 0 | 7,643 | Form 4 |
| 41 | Avista Capital Partners GP LLC Avista Capital Partners L.P. Avista Capital Partners (Offshore) L.P. ACP-Lantern Co-Invest LLC 10% Owner | 2018-02-12 16:31:11 | 0 0 | 0 | Form 13G |
| 42 | BAKEWELL JOHN K CFO and Treasurer | 2016-01-04 17:22:37 | 0 0 | 0 | Form 4 |