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8-K

Perspective Therapeutics, Inc. (CATX)

8-K 2026-05-04 For: 2026-05-04
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Added on May 04, 2026
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UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 04, 2026

Perspective Therapeutics, Inc.

(Exact name of Registrant as Specified in Its Charter)

Delaware 001-33407 41-1458152
(State or Other Jurisdiction<br>of Incorporation) (Commission File Number) (IRS Employer<br>Identification No.)
c/o Perspective Therapeutics, Inc.<br><br>2401 Elliott Avenue<br><br>Suite 320
Seattle, Washington 98121
(Address of Principal Executive Offices) (Zip Code)
Registrant’s Telephone Number, Including Area Code: (206) 676-0900
---

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading<br>Symbol(s) Name of each exchange on which registered
Common Stock, $0.001 par value CATX NYSE American LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On May 4, 2026, Perspective Therapeutics, Inc. (the “Company”) posted to its website a presentation (the “Presentation”) containing slides presented at an analyst event hosted by the Company on that date and certain other slides regarding the Company’s clinical programs and manufacturing technologies and infrastructure. The Presentation contains certain estimated and projected financial information, including the Company’s estimated cash, cash equivalents and short-term investments as of March 31, 2026. The estimated and projected financial information included in the Presentation is preliminary and has not been audited, reviewed or compiled by the Company’s independent registered public accounting firm, WithumSmith+Brown, PC (“Withum”), and Withum has not completed its procedures with respect to the preliminary financial data. Accordingly, Withum does not express an opinion or any other form of assurance with respect thereto.

The Company’s actual results as of March 31, 2026 may differ from the preliminary financial data due to the completion of the Company’s closing procedures with respect to the quarter ended March 31, 2026, final adjustments and other developments that may arise between now and the time the financial results for the such fiscal quarter are finalized.

Item 8.01 Other Events.

On May 4, 2026, the Company posted the Presentation to its website. A copy of the Presentation is filed as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference into this Item 8.01.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No. Description
99.1 Company Presentation.
104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

PERSPECTIVE THERAPEUTICS, INC.
Date: May 4, 2026 By: /s/ Joel Sendek
Joel Sendek<br>Chief Financial Officer

Slide 1

Slide 2

Slide 3

Agenda

Slide 4

Slide 5

Engineering the Alpha Advantage in Targeted Oncology

Slide 6

Optimizing the Entire System

Slide 7

Expanding the Addressable Market

Slide 8

Unlocking New Treatment Options Across Solid Tumors:

Slide 9

Choosing The Right Isotope

Slide 10

Optimizing Structural Chemistry:

Slide 11

Not All ²¹²Pb Programs Are Created Equal

Slide 12

Advancing a Theranostic Approach:

Slide 13

A Decade of Deliberate, End-to-End Engineering

Slide 14

Direct-to-Hospital Delivery through Integrated Isotope Production

Slide 15

Daily Production at Regional Sites Ensures Supply of Ready-to-Administer Product

Slide 16

Reaching the Largest Addressable Market with Regional Manufacturing

Slide 17

Advancing a Diverse Wholly Owned 212Pb-Based Oncology Portfolio

Slide 18

Rapidly Advancing Best-in-Class Next Generation Radiopharmaceuticals

Slide 19

Slide 20

Perspective Therapeutics

Slide 21

Slide 22

Theranostics in management of patients with neuroendocrine and other SSTR positive tumors

Slide 23

Objectives

Slide 24

Treatment landscape

Slide 25

Adverse side effects

Slide 26

Other factors that drive treatment

Slide 27

Survival expectations

Slide 28

NCCN guidelines

Slide 29

Treatment decision making

Slide 30

Alpha particle PRRT

Slide 31

The evolution of the treatment continuum

Slide 32

Summary

Slide 33

Slide 34

SSTR2+ Neuroendocrine Tumors is a Large, Growing Market with Significant Unmet Need

Slide 35

Ongoing Phase 1/2a to Establish Broad Therapeutic Window For VMT-⍺-NET in NETs

Slide 36

Slide 37

Patient with Confirmed PR After [212Pb]VMT-α-NET Treatment

Slide 38

VMT-⍺-NET: Baseline Patient Characteristics in AACR 2026 Data Analysis

Slide 39

Patient Exposure and Follow-up with [212Pb]VMT-α-NET in AACR 2026 Data Analysis

Slide 40

Slide 41

Blood Creatinine During Follow-up for All Patients Treated (n=64)

Slide 42

VMT-⍺-NET: Durable Disease Control Across All Doses

Slide 43

Spider plot of tumor change over time by patient

Slide 44

VMT-α-NET Responses Deepen Over Time

Slide 45

VMT-α-NET’s Compelling Profile Supports Potential Registration Study at Current Dose Level

Slide 46

Why Frontloading?

Slide 47

Ongoing Phase 1/2a to Establish Broad Therapeutic Window For VMT-⍺-NET in NETs

Slide 48

Meningioma

Slide 49

VMT-⍺-NET: Potential First-in-Class 212Pb-Radioligand Therapy Targeting SSTR2

Slide 50

Slide 51

Slide 52

[212Pb]Pb-VMT--NET after previous radio-ligand treatment

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Dresden VMT--NET compassionate use program

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Dresden VMT--NET compassionate use program

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Dresden VMT--NET compassionate use program

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Dresden VMT--NET compassionate use program

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First results - compassionate use program

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First results - compassionate use program

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First results - compassionate use program

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First results - compassionate use program

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First results - compassionate use program

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First results - compassionate use program

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Case Study

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Case Study

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Case Study

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Case Study

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Imaging and dosimetry

Slide 69

Conclusion

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How biodistribution informs therapeutic potential

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Disclosures

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PSMA vs DOTATATE

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PSMA vs DOTATATE

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PSMA vs DOTATATE

Slide 78

Patient’s journey from PSA>MRI>PSMA PET

Slide 79

Receptor Targeted PET enabled a fundamentally different clinical trial design: Treat if you see it

Slide 80

68Ga/177Lu-PSMA Super vs Non-Responder

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68Ga/177Lu-DOTATATE Super vs Non-Responder

Slide 82

Radioligand Therapy Today “Science advances one funeral at a time” Max Planck

Slide 83

Radioligand Therapy Today “Science advances one funeral at a time” Max Planck

Slide 84

FAP is an Emerging Target

Slide 85

Not every FAP is bio-identical

Slide 86

Theranostics Short Half-lives for Long, Full Lives

Slide 87

FIH 203/212Pb Pb-VMT-α-NET Perspective Therapeutics

Slide 88

FIH 203/212Pb Pb-VMT-α-NET Perspective Therapeutics

Slide 89

Early, Medium and Late Biodistribution Should Inform Therapeutic Window

Slide 90

Perspective’s CCK2R81 in Medullary Thyroid Cancer Compared to FDG and Fluorodopa

Slide 91

Development of PSV594 for CCK2R+ Tumor types

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CCK2R: Implicated in Multiple Tumor Types With Major Unmet Needs

Slide 93

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Expanding the Addressable Market

Slide 96

Optimizing the Entire System

Slide 97

A Decade of Deliberate, End-to-End Engineering

Slide 98

Built Over a Decade:

Slide 99

Q&A

Slide 100

Advancing a Theranostic Approach:

Slide 101

212Pb is Our Isotope of Choice

Slide 102

Choosing The Right Isotope

Slide 103

Kinetics Matter: 212Pb Hits Hard and Fast For Strong Activity with Less Systemic Exposure

Slide 104

𝜶-Particles Delivers More Potent, Targeted Tumor Killing vs. β-Particles

Slide 105

212Pb Further Enhanced by Proprietary Chelator for Targeted Delivery of Payload

Slide 106

212Pb Multi-Mechanistic Activity Drives Tumor Destruction and Anti-Tumor Immunity

Slide 107

Rationale for Synergy with Immune Checkpoint Inhibitors

Slide 108

212Pb Uniquely Suited for Combination with Immune Check Point Inhibitors

Slide 109

212Pb Half-life Is More Convenient for Customers

Slide 110

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Advancing a Theranostic Approach:

Slide 114

Supply Chain and Manufacturing Infrastructure

Slide 115

End-to-End Manufacturing with Clinical Supply Secured and Commercial Scale Underway

Slide 116

Direct-to-Hospital Delivery through Integrated Isotope Production

Slide 117

Reliable, On-Demand 212Pb from 228Th and 224Ra

Slide 118

Flexible Scalable 224Ra Supply Enables Regional Manufacturing

Slide 119

Ideal for Regional Manufacturing

Slide 120

On-Demand Fulfillment at Regional Sites for Finished Product Delivery

Slide 121

Daily Production at Regional Sites Ensures Supply of Ready-to-administer Product

Slide 122

Reaching the Largest Addressable Market with Regional Manufacturing

Slide 123

Mature, Well-Established Distribution Networks

Slide 124

Network Approach Chosen by Novartis