Insider holders · CIK 0001521036
Lantheus Holdings, Inc. · LNTH
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Sriram VenkataramanDirector | — | 3,442,208 | 3,442,208 | Mar 21, 2017 · 5:00 pm EDT | Form 4 |
| Mary Anne HeinoExecutive Chair and CEO | 321,897 | 179,300 | 501,197 | Jun 3, 2026 · 4:43 pm EDT | Form 4 |
| Jeffrey Allen BaileyCEO and President | 229,407 | — | 229,407 | Sep 3, 2015 · 4:54 pm EDT | Form 4/A |
| John W. CrowleyCFO | 161,825 | — | 161,825 | Apr 27, 2018 · 4:10 pm EDT | Form 4 |
| Michael P DuffySee Remarks | 160,221 | — | 160,221 | Mar 8, 2019 · 4:32 pm EST | Form 4 |
| ACP-Lantern Co-Invest, LLC10% Owner | — | 122,492 | 122,492 | Aug 16, 2017 · 8:06 pm EDT | Form 4 |
| Avista Capital Partners GP, LLC10% Owner | — | 122,492 | 122,492 | Aug 16, 2017 · 8:06 pm EDT | Form 4 |
| Avista Capital Partners, L.P.10% Owner | — | 122,492 | 122,492 | Aug 16, 2017 · 8:06 pm EDT | Form 4 |
| Avista Capital Partners (Offshore), L.P.10% Owner | — | 122,492 | 122,492 | Aug 16, 2017 · 8:06 pm EDT | Form 4 |
| Robert J. Marshall Jr.CFO and Treasurer | 122,071 | — | 122,071 | Sep 2, 2026 · 4:35 pm EDT | Form 4 |
| William C. Dawes Jr.VP, Mfg & Ops | 111,581 | — | 111,581 | Sep 1, 2017 · 8:11 pm EDT | Form 4 |
| Brian A MarkisonDirector | 97,467 | — | 97,467 | Feb 28, 2019 · 4:15 pm EST | Form 4 |
| Timothy G HealeySVP, Commercial | 85,658 | — | 85,658 | Mar 7, 2018 · 4:33 pm EST | Form 4 |
| Cesare OrlandiChief Medical Officer | 79,733 | — | 79,733 | Mar 8, 2019 · 4:35 pm EST | Form 4 |
| Derace L SchafferDirector | 56,994 | — | 56,994 | Feb 28, 2019 · 4:21 pm EST | Form 4 |
| James C ClemmerDirector | 53,987 | — | 53,987 | Feb 28, 2019 · 4:15 pm EST | Form 4 |
| Sam R LenoDirector | 53,530 | — | 53,530 | Feb 28, 2019 · 4:16 pm EST | Form 4 |
| A Frederick RobertsonDirector | 43,062 | — | 43,062 | Mar 8, 2019 · 4:30 pm EST | Form 4 |
| John J. BollaSee Remarks | 38,774 | — | 38,774 | Feb 28, 2019 · 4:16 pm EST | Form 4 |
| Ludger DinkelborgSee Remarks | 33,195 | — | 33,195 | Aug 19, 2026 · 4:34 pm EDT | Form 4 |
| Gerard BerDirector | 27,118 | — | 27,118 | Jun 3, 2026 · 4:44 pm EDT | Form 4 |
| Julie McHughDirector | 17,510 | — | 17,510 | Mar 8, 2019 · 4:33 pm EST | Form 4 |
| David F BurgstahlerDirector | 13,248 | 1,562 | 14,810 | Sep 11, 2017 · 9:00 pm EDT | Form 4 |
| Patrick O'NeillDirector | 14,382 | — | 14,382 | Jun 25, 2015 · 7:34 pm EDT | Form 4 |
| Kenneth PucelDirector | 13,264 | — | 13,264 | Feb 28, 2019 · 4:16 pm EST | Form 4 |
| Kimberly BrownChief Accounting Officer | 13,263 | — | 13,263 | Aug 19, 2026 · 4:34 pm EDT | Form 4 |
| Gary J PrudenDirector | 10,072 | — | 10,072 | Mar 8, 2019 · 4:32 pm EST | Form 4 |
| James H ThrallDirector | 9,764 | — | 9,764 | Mar 8, 2019 · 4:32 pm EST | Form 4 |
| John K BakewellCFO and Treasurer | 0 | — | 0 | Jan 4, 2016 · 5:22 pm EST | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.