Lantheus Holdings, Inc.
Total Trades
121
Buys
0
Sells
102
Largest Trade
N/A
Insiders
14
Institutional Funds
334
Inst. Value
$1M+
Activist Filings
22
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Niedzwiecki Daniel | See Remarks | SELL | $100K–$500K | 6K | $78.74 | Jun 17, 2025 |
| McHugh Julie | Director | SELL | $100K–$500K | 5K | $81.62 | Jun 11, 2025 |
| Marshall Robert J. Jr. | CFO and Treasurer | EXERCISE | $500K+ | 15K | $49.93 | Jun 11, 2025 |
| Marshall Robert J. Jr. | CFO and Treasurer | SELL | $1M+ | 40K | $83.00 | Jun 11, 2025 |
| Blanchfield Paul | President | SELL | $500K+ | 7K | $79.65 | Jun 9, 2025 |
| Niedzwiecki Daniel | See Remarks | SELL | $100K–$500K | 6K | $79.65 | Jun 9, 2025 |
| Heino Mary Anne | Director | SELL | $1M+ | 26K | $76.83 | Jun 4, 2025 |
| Marshall Robert J. Jr. | CFO and Treasurer | SELL | $1M+ | 10K | $100.52 | Mar 19, 2025 |
| Heino Mary Anne | Director | SELL | <$1K | 3 | $93.84 | Mar 18, 2025 |
| Thrall James H | Director | SELL | $50K–$100K | 1K | $94.76 | Jan 17, 2025 |
| Marshall Robert J. Jr. | CFO and Treasurer | SELL | $500K+ | 10K | $81.20 | Nov 19, 2024 |
| Blanchfield Paul | President | SELL | $100K–$500K | 2K | $79.65 | Nov 18, 2024 |
| Heino Mary Anne | Director | SELL | $1M+ | 11K | $87.16 | Nov 12, 2024 |
| Thrall James H | Director | SELL | $50K–$100K | 1K | $98.52 | Aug 23, 2024 |
| Sabens Andrea | Chief Accounting O… | SELL | $15K–$50K | 341 | $79.77 | Jun 17, 2024 |
| Blanchfield Paul | President | SELL | $50K–$100K | 1K | $80.82 | Jun 4, 2024 |
| Niedzwiecki Daniel | See Remarks | SELL | $1M+ | 13K | $79.86 | Jun 3, 2024 |
| Maeusli Heinz Christoph | Director | EXERCISE | $100K–$500K | 17K | $16.17 | May 30, 2024 |
| Maeusli Heinz Christoph | Director | SELL | $1M+ | 18K | $79.19 | May 30, 2024 |
| McHugh Julie | Director | SELL | $100K–$500K | 3K | $78.50 | May 30, 2024 |
| Sabens Andrea | Chief Accounting O… | SELL | $15K–$50K | 341 | $61.24 | Apr 17, 2024 |
| Sabens Andrea | Chief Accounting O… | SELL | $15K–$50K | 341 | $55.31 | Feb 15, 2024 |
| Sabens Andrea | Chief Accounting O… | SELL | $15K–$50K | 341 | $56.01 | Jan 18, 2024 |
| Blanchfield Paul | President | SELL | $100K–$500K | 2K | $67.96 | Nov 20, 2023 |
| Heino Mary Anne | CEO | SELL | $500K+ | 12K | $63.72 | Nov 15, 2023 |
| Sabens Andrea | Chief Accounting O… | SELL | $15K–$50K | 341 | $63.57 | Nov 15, 2023 |
| Baylor-Henry Minnie | Director | SELL | <$1K | 6 | $86.22 | Oct 13, 2023 |
| Niedzwiecki Daniel | See Remarks | EXERCISE | $50K–$100K | 3K | $17.79 | Sep 19, 2023 |
| Niedzwiecki Daniel | See Remarks | SELL | $100K–$500K | 3K | $66.43 | Sep 19, 2023 |
| Blanchfield Paul | President | SELL | $15K–$50K | 408 | $66.10 | Aug 23, 2023 |
| Blanchfield Paul | President | SELL | $50K–$100K | 2K | $65.19 | Aug 22, 2023 |
| Marshall Robert J. Jr. | CFO and Treasurer | SELL | $500K+ | 10K | $68.52 | Aug 17, 2023 |
| Heino Mary Anne | CEO | SELL | $500K+ | 11K | $68.58 | Aug 15, 2023 |
| Niedzwiecki Daniel | See Remarks | SELL | $100K–$500K | 4K | $67.93 | Aug 15, 2023 |
| Sabens Andrea | Chief Accounting O… | SELL | $100K–$500K | 2K | $90.87 | Jul 21, 2023 |
| Blanchfield Paul | President | SELL | $100K–$500K | 2K | $97.93 | May 22, 2023 |
| Sabens Andrea | Chief Accounting O… | SELL | $15K–$50K | 385 | $99.36 | May 17, 2023 |
| Marshall Robert J. Jr. | CFO and Treasurer | SELL | $500K+ | 10K | $99.36 | May 17, 2023 |
| Niedzwiecki Daniel | See Remarks | SELL | $500K+ | 6K | $98.82 | May 15, 2023 |
| Sabens Andrea | Chief Accounting O… | SELL | $15K–$50K | 386 | $88.67 | Apr 19, 2023 |
| Montagut Etienne | Chief Business Off… | SELL | $100K–$500K | 2K | $88.67 | Apr 19, 2023 |
| Montagut Etienne | Chief Business Off… | SELL | $100K–$500K | 4K | $82.09 | Apr 5, 2023 |
| MARKISON BRIAN A | Director | SELL | $1M+ | 13K | $81.13 | Mar 29, 2023 |
| Heino Mary Anne | CEO | EXERCISE | $500K+ | 44K | $19.11 | Mar 29, 2023 |
| Heino Mary Anne | CEO | SELL | $1M+ | 44K | $80.77 | Mar 29, 2023 |
| Montagut Etienne | Chief Business Off… | SELL | $1M+ | 15K | $81.13 | Mar 29, 2023 |
| LENO SAM R | Director | SELL | $500K+ | 7K | $80.75 | Mar 29, 2023 |
| LENO SAM R | Director | EXERCISE | $100K–$500K | 7K | $19.11 | Mar 29, 2023 |
| Sabens Andrea | Chief Accounting O… | SELL | $15K–$50K | 386 | $71.58 | Mar 17, 2023 |
| Marshall Robert J. Jr. | CFO and Treasurer | SELL | $100K–$500K | 5K | $71.58 | Mar 17, 2023 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 334 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| STATE STREET CORP | 2.4M | $1M+ | SH |
| REINHART PARTNERS, LLC. | 1.6M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.5M | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 1.3M | $1M+ | SH |
| Swedbank AB | 1.2M | $1M+ | SH |
| Swedbank AB | 1.2M | $1M+ | SH |
| NORGES BANK | 1.1M | $1M+ | SH |
| Carmignac Gestion | 1.1M | $1M+ | SH |
| Point72 Asset Management, L.P. | 1.0M | $1M+ | SH |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 940K | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 769K | $1M+ | SH |
| TD ASSET MANAGEMENT INC | 712K | $1M+ | SH |
| MACKENZIE FINANCIAL CORP | 658K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 643K | $1M+ | SH |
| Freestone Grove Partners LP | 609K | $1M+ | SH |
| Polaris Capital Management, LLC | 538K | $1M+ | SH |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 522K | $1M+ | SH |
| MORGAN STANLEY | 503K | $1M+ | SH |
| Portolan Capital Management, LLC | 476K | $1M+ | SH |
| Epoch Investment Partners, Inc. | 408K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 17, 2026
8.6%
5.7M shares
SC 13G/A · Feb 12, 2026
2.5%
1.6M shares
SC 13G/A · Nov 14, 2025
9.8%
6.7M shares
SC 13G · Nov 7, 2025
5.6%
3.8M shares
SC 13G/A · Nov 5, 2025
6.5%
4.4M shares
SC 13G/A · Aug 14, 2025
10.0%
6.9M shares
SC 13G · Aug 6, 2025
7.5%
5.2M shares
SC 13G/A · Jun 6, 2025
10.1%
7.0M shares
SC 13G/A · May 14, 2025
9.5%
6.5M shares
SC 13G/A · Feb 14, 2025
8.9%
6.2M shares
Janus Henderson Group plc EIN #00-0000000
SC 13G/A · Nov 14, 2024
5.2%
3.6M shares
Janus Henderson Group plc EIN #00-0000000
SC 13G · Feb 14, 2024
5.8%
4.0M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.2%
7.0M shares
SC 13G/A · Jan 23, 2024
12.6%
8.6M shares
SC 13G/A · Feb 10, 2023
11.9%
8.2M shares
SC 13G/A · Jan 26, 2023
11.9%
8.2M shares
SC 13G/A · Jan 20, 2023
11.9%
8.2M shares
The Vanguard Group - 23-1945930
SC 13G/A · Jul 11, 2022
10.8%
7.4M shares
SC 13G/A · Feb 15, 2022
0.0%
0 shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2022
3.1%
2.2M shares
SC 13G/A · Jan 27, 2022
15.8%
10.7M shares
SC 13G · Jan 25, 2022
15.8%
10.7M shares