Perspective Therapeutics, Inc.
US ˙ NYSEAM

SecurityCATX / Perspective Therapeutics, Inc.
InstitutionCitigroup Inc
Latest Disclosed Ownership212,131 shares
Latest Disclosed Value $ 884,586
Citigroup Inc reports 182.69% increase in ownership of CATX / Perspective Therapeutics, Inc.

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 212,131 shares of Perspective Therapeutics, Inc. (US:CATX) valued at $884,586 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 75,041 shares of Perspective Therapeutics, Inc.. This represents a change in shares of 182.69% during the quarter. The current value of the position is $755,186 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)
2026-05-11 2026-03-31 13F PERSPECTIVE THERAPEUTICS COM NEW 46489V302 212,131 137,090 182.69 885 329.13 0.0004
2026-02-13 2025-12-31 13F PERSPECTIVE THERAPEUTICS COM NEW 46489V302 75,041 -50,267 -40.11 206 -51.98 0.0001
2025-11-10 2025-09-30 13F PERSPECTIVE THERAPEUTICS COM NEW 46489V302 125,308 28,758 29.79 430 29.22 0.0002
2025-08-11 2025-06-30 13F PERSPECTIVE THERAPEUTICS COM NEW 46489V302 96,550 56,210 139.34 332 290.59 0.0002
2025-05-12 2025-03-31 13F PERSPECTIVE THERAPEUTICS COM NEW 46489V302 40,340 -4,901 -10.83 86 -40.97 0.0000
2025-02-12 2024-12-31 13F PERSPECTIVE THERAPEUTICS COM NEW 46489V302 45,241 6,174 15.80 144 -72.36 0.0001
2024-11-12 2024-09-30 13F PERSPECTIVE THERAPEUTICS COM NEW 46489V302 39,067 28,762 279.11 522 410.78 0.0003
2024-08-12 2024-06-30 13F PERSPECTIVE THERAPEUTICS COM NEW 46489V302 10,305 10,305 103 0.0001
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.