Lantheus Holdings, Inc.
US ˙ NasdaqGM ˙ US5165441032

SecurityLNTH / Lantheus Holdings, Inc.
InstitutionHancock Whitney Corp
Latest Disclosed Ownership19,569 shares
Latest Disclosed Value $ 1,655,929
Hancock Whitney Corp reports 7.09% increase in ownership of LNTH / Lantheus Holdings, Inc.

On May 15, 2026 - Hancock Whitney Corp filed a 13F-HR form disclosing ownership of 19,569 shares of Lantheus Holdings, Inc. (US:LNTH) valued at $1,484,309 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 18,273 shares of Lantheus Holdings, Inc.. This represents a change in shares of 7.09% during the quarter. The current value of the position is $1,961,792 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F LANTHEUS HLDGS COM 516544103 19,569 1,296 7.09 1,656 36.10 0.0288
2026-02-17 2025-12-31 13F LANTHEUS HLDGS COM 516544103 18,273 -1,136 -5.85 1,216 22.21 0.0219
2025-11-17 2025-09-30 13F LANTHEUS HLDGS COM 516544103 19,409 -10 -0.05 995 -37.38 0.0181
2025-08-14 2025-06-30 13F LANTHEUS HLDGS COM 516544103 19,419 317 1.66 1,590 -14.75 0.0304
2025-05-15 2025-03-31 13F LANTHEUS HLDGS COM 516544103 19,102 736 4.01 1,864 13.45 0.0608
2025-02-14 2024-12-31 13F LANTHEUS HLDGS COM 516544103 18,366 471 2.63 1,643 -16.34 0.0520
2024-11-13 2024-09-30 13F LANTHEUS HLDGS COM 516544103 17,895 -21 -0.12 1,964 36.58 0.0633
2024-08-13 2024-06-30 13F LANTHEUS HLDGS COMMON STOCK 516544103 17,916 -2,235 -11.09 1,438 14.67 0.0488
2024-05-16 2024-03-31 13F LANTHEUS HLDGS COMMON STOCK 516544103 20,151 14,639 265.58 1,254 267.74 0.0433
2024-02-14 2023-12-31 13F LANTHEUS HOLDINGS COM 516544103 5,512 -151 -2.67 342 -13.23 0.0127
2023-11-13 2023-09-30 13F LANTHEUS HOLDINGS COM 516544103 5,663 -105 -1.82 393 -18.80 0.0162
2023-11-13 2023-06-30 13F/A-1 LANTHEUS HLDGS COM 516544103 5,768 -2,140 -27.06 484 -25.88 0.0190
2023-08-10 2023-06-30 13F LANTHEUS HLDGS COM 516544103 5,768 -2,140 0 0.0190
2023-11-13 2023-03-31 13F/A-2 LANTHEUS HLDGS COM 516544103 7,908 -1,064 -11.86 653 42.89 0.0262
2023-05-16 2023-03-31 13F/A-1 LANTHEUS HLDGS COM 516544103 7,908 -1,064 1 0.0140
2023-05-15 2023-03-31 13F LANTHEUS HLDGS COM 516544103 8,972 0 0 0.0095
2023-11-13 2022-12-31 13F/A-1 LANTHEUS HLDGS COM 516544103 8,972 -25 -0.28 457 -27.80 0.0176
2023-02-03 2022-12-31 13F LANTHEUS HLDGS COM 516544103 8,972 -25 0 0.0176
2022-10-26 2022-09-30 13F LANTHEUS HLDGS COM 516544103 8,997 -2,007 -18.24 633 -12.93 0.0271
2022-08-08 2022-06-30 13F LANTHEUS HLDGS COM 516544103 11,004 -6,432 -36.89 727 -24.59 0.0291
2022-05-12 2022-03-31 13F LANTHEUS HLDGS COM 516544103 17,436 -3,695 -17.49 964 58.03 0.0328
2022-01-25 2021-12-31 13F LANTHEUS HLDGS COM 516544103 21,131 -401 -1.86 610 10.31 0.0192
2021-11-04 2021-09-30 13F LANTHEUS HLDGS COM 516544103 21,532 10,321 92.06 553 78.39 0.0193
2021-08-09 2021-06-30 13F LANTHEUS HLDGS COM 516544103 11,211 -319 -2.77 310 26.02 0.0099
2021-05-14 2021-03-31 13F LANTHEUS HLDGS COM 516544103 11,530 11,530 246 0.0084
2021-02-09 2020-12-31 13F LANTHEUS HLDGS COM 516544103 0 -11,749 -100.00 0 -100.00
2020-11-05 2020-09-30 13F LANTHEUS HLDGS COM 516544103 11,749 469 4.16 149 -7.45 0.0055
2020-07-30 2020-06-30 13F LANTHEUS HLDGS COM 516544103 11,280 -14,029 -55.43 161 -50.15 0.0062
2020-05-08 2020-03-31 13F LANTHEUS HLDGS COM 516544103 25,309 9,201 57.12 323 -2.12 0.0127
2020-02-06 2019-12-31 13F LANTHEUS HLDGS COM 516544103 16,108 -9,513 -37.13 330 -48.60 0.0106
2019-10-29 2019-09-30 13F LANTHEUS HLDGS COM 516544103 25,621 -6,177 -19.43 642 -28.67 0.0210
2019-08-29 2019-06-30 13F LANTHEUS HLDGS COM 516544103 31,798 22,408 238.64 900 291.30 0.0288
2019-05-13 2019-03-31 13F LANTHEUS HLDGS COM 516544103 9,390 9,390 230 0.0074
2018-08-14 2018-06-30 13F LANTHEUS HOLDINGS COMMON STOCK 516544103 0 -74,136 -100.00 0 -100.00
2018-05-15 2018-03-31 13F LANTHEUS HOLDINGS COMMON STOCK 516544103 74,136 -30,762 -29.33 1,179 -45.03 0.0528
2018-02-12 2017-12-31 13F LANTHEUS HOLDINGS COMMON STOCK 516544103 104,898 37,281 55.14 2,145 78.16 0.0888
2017-11-14 2017-09-30 13F LANTHEUS HOLDINGS COMMON STOCK 516544103 67,617 67,617 1,204 0.0510
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.