CATX

8-K

0000728387false00007283872026-02-022026-02-02

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, 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): February 02, 2026

Perspective Therapeutics, Inc. (Exact name of Registrant as Specified in Its Charter)

Delaware

001-33407

41-1458152

(State or Other Jurisdiction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

c/o Perspective Therapeutics, Inc. 2401 Elliott Avenue 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 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 February 2, 2026, Perspective Therapeutics, Inc. (the "Company") updated its corporate presentation (the "Presentation"). The Presentation contains certain estimated and projected financial information, including the Company’s estimated cash, cash equivalents and short-term investments as of December 31, 2025. 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 performed any 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 December 31, 2025 may differ from the preliminary financial data due to the completion of the Company’s closing procedures with respect to the year ended December 31, 2025, final adjustments and other developments that may arise between now and the time the financial results for the fiscal year are finalized. Item 8.01 Other Events. On February 2, 2026, the Company posted the Presentation to its website. A copy of the Presentation is filed herewith as Exhibit 99.1 and is incorporated by reference into this Item 8.01. Item 9.01 Financial Statements and Exhibits. (d) Exhibits

Exhibit No.

Description

99.1

Corporate 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:

February 2, 2026

By:

/s/ Joel Sendek

Joel Sendek Chief Financial Officer

8-K

0000728387false00007283872026-01-092026-01-09

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, 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): January 09, 2026

Perspective Therapeutics, Inc. (Exact name of Registrant as Specified in Its Charter)

Delaware

001-33407

41-1458152

(State or Other Jurisdiction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

c/o Perspective Therapeutics, Inc. 2401 Elliott Avenue 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 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 8.01 Other Events. On January 9, 2026, Perspective Therapeutics, Inc. issued a press release announcing certain updated interim data from its Phase 1/2a clinical trial of [212Pb]VMT-α-NET in patients with unresectable or metastatic somatostatin receptor subtype 2-expressing neuroendocrine tumors (NETs) that are being presented at the 2026 American Society of Clinical Oncology Gastrointestinal Cancers Symposium taking place from January 8-10, 2026 in San Francisco, California. A copy of the press release is filed herewith as Exhibit 99.1 and is incorporated herein by reference. Item 9.01 Financial Statements and Exhibits. (d) Exhibits.

Exhibit No.

Description

99.1

Press Release dated January 9, 2026.

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:

January 9, 2026

By:

/s/ Johan (Thijs) Spoor

Johan (Thijs) Spoor Chief Executive Officer

8-K

0000728387false00007283872025-11-102025-11-10

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, 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): November 10, 2025

Perspective Therapeutics, Inc. (Exact name of Registrant as Specified in Its Charter)

Delaware

001-33407

41-1458152

(State or Other Jurisdiction of Incorporation)

(Commission File Number)

(IRS Employer Identification No.)

c/o Perspective Therapeutics, Inc. 2401 Elliott Avenue 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 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 November 10, 2025, Perspective Therapeutics, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2025 and providing recent business highlights. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (the “Form 8-K”) and is incorporated by reference into this Item 2.02.

The information furnished pursuant to this Item 2.02, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed to be incorporated by reference into any of the Company’s filings with the Securities and Exchange Commission under the Exchange Act or the Securities Act of 1933, as amended, whether made before or after the date hereof, regardless of any general incorporation language in such a filing, except as expressly set forth by specific reference in such a filing.

Item 8.01 Other Events.

Also on November 10, 2025, the Company posted an updated corporate presentation on its website at www.perspectivetherapeutics.com. A copy of the presentation is filed as Exhibit 99.2 to this Form 8-K and is incorporated by reference into this Item 8.01. Item 9.01 Financial Statements and Exhibits. (d) Exhibits.

99.1

Press release issued by Perspective Therapeutics, Inc., dated November 10, 2025.

99.2

Corporate 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:

November 10, 2025

By:

/s/ Joel Sendek

Joel Sendek Chief Financial Officer