Lantheus Holdings, Inc. (LNTH) Insider Ownership

Historic Ownership Trends

According to recent filings covering the 90 days ending January 02, 2026, the three most significant insider holders at Lantheus Holdings are Executive Chair Mary Anne Heino (512.24K shares), Svp And General Counsel Michael P Duffy (109.47K shares), Cfo And Treasurer Robert J. Jr. Marshall (88.13K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Rajiv A Patel 3,477,227 21 Aug, 2025
Partners L L C/Ca Farallon 3,477,227 21 Aug, 2025
Mary Anne Heino Executive Chair 512,235 19 Nov, 2025
Brian A Markison Ceo 232,420 07 Mar, 2025
Michael P Duffy Svp And General Counsel 109,472 20 Apr, 2021
Paul Blanchfield President 108,214 15 Aug, 2025
John J. Bolla Chief Operations Officer 102,440 18 Jun, 2021
Etienne Montagut Chief Business Officer 94,651 07 Mar, 2024
Robert J. Jr. Marshall Cfo And Treasurer 88,133 03 Sep, 2025
Daniel Niedzwiecki Nan 87,057 17 Jun, 2025
Carol Walker Senior Vice President And Quality 64,899 01 Apr, 2022
Sam R Leno 63,109 16 May, 2025
Andrea Sabens Chief Accounting Officer 60,420 17 Jul, 2024
Istvan Molnar Chief Medical Officer 58,950 08 Mar, 2021
A Frederick Robertson 51,798 30 Apr, 2021
Amanda Michelle Morgan Chief Commercial Officer 39,580 07 Mar, 2025
Jean-Claude Provost Chief Medical Officer 38,841 07 Mar, 2024
James H Thrall 35,744 16 May, 2025
Ying Vivian Yao Chief Human Resources Officer 30,319 07 Mar, 2022
Julie Mchugh 25,962 11 Jun, 2025
Heinz Christoph Maeusli 25,877 16 May, 2025
Gerard Ber 23,362 16 May, 2025
Gary J Pruden 17,150 16 May, 2025
Ludger Dinkelborg Nan 14,765 19 Aug, 2025
Minnie Baylor-Henry 9,881 16 May, 2025
Jeffrey Humphrey Chief Medical Officer 9,076 20 Jun, 2024
Kimberly Brown Chief Accounting Officer 7,701 19 Aug, 2025
Julia Marie Eastland 3,882 16 May, 2025
Phuong Khanh Morrow 3,100 16 May, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
17 Nov, 2025 Mary Anne Heino Common Stock A 14,285 $0.00 332,935 D A
29 Aug, 2025 Robert J. Jr. Marshall - - 88,133 D
29 Aug, 2025 Robert J. Jr. Marshall Common Stock D 727 $54.90 88,133 D F
19 Aug, 2025 Rajiv A Patel Common Stock D 41,000 $55.34 6,842,227 I S
19 Aug, 2025 Partners L L C/Ca Farallon Common Stock D 41,000 $55.34 6,842,227 I S
19 Aug, 2025 Partners L L C/Ca Farallon - - 6,842,227 I
20 Aug, 2025 Partners L L C/Ca Farallon - - 3,477,227 I
20 Aug, 2025 Rajiv A Patel Common Stock D 3,365,000 $56.15 3,477,227 I S
20 Aug, 2025 Partners L L C/Ca Farallon Common Stock D 3,365,000 $56.15 3,477,227 I S
15 Aug, 2025 Ludger Dinkelborg Common Stock A 14,765 $0.00 14,765 D A
15 Aug, 2025 Kimberly Brown Common Stock D 463 $54.18 7,701 D F
15 Aug, 2025 Kimberly Brown - - 7,701 D
13 Aug, 2025 Paul Blanchfield Common Stock D 3,060 $53.57 108,214 D S
15 Jul, 2025 Paul Blanchfield - - 111,274 D
15 Jul, 2025 Paul Blanchfield Common Stock D 518 $81.26 111,274 D F
13 Jun, 2025 Daniel Niedzwiecki Common Stock D 6,000 $78.74 87,057 D S
09 Jun, 2025 Julie Mchugh Common Stock D 5,192 $81.62 25,962 D S
09 Jun, 2025 Robert J. Jr. Marshall Common Stock A 14,773 $49.93 128,633 D M
09 Jun, 2025 Robert J. Jr. Marshall Common Stock D 3,494 $81.27 125,139 D S
09 Jun, 2025 Robert J. Jr. Marshall Common Stock D 9,243 $82.50 115,896 D S