Core Insights - Plus Therapeutics is set to launch its CNSide CSF Assay Platform in the U.S. market in the second half of 2025, targeting a significant unmet need in CNS cancer diagnostics with a market opportunity exceeding $6 billion [1][2][4] Company Overview - Plus Therapeutics, Inc. is a clinical-stage pharmaceutical company focused on developing targeted radiotherapeutics for central nervous system (CNS) cancers [14] - The company has invested over $300 million in the CNSide technology, which aims to address the clinical need for better diagnostic tools in CNS cancer [3] Product Details - The CNSide CSF Assay Platform is designed for patients suspected of having CNS cancer metastases, with the first test, CNSide CSF Tumor Cell Enumeration (TCE), expected to be commercialized soon [2][4] - The platform has demonstrated high sensitivity (92%) and specificity (95%) in diagnosing CNS metastases, influencing treatment decisions in 90% of cases [5] Market Opportunity - CNS metastases affect approximately 30% of adult cancer patients, and the current standard of care for diagnosis is outdated, leading to missed or delayed diagnoses [4] - The CNSide platform is positioned to provide superior clinical utility compared to the current standard of care, which has been validated through real-world use and peer-reviewed publications [5] Commercial Strategy - Plus Therapeutics has established a scalable testing laboratory in Houston, TX, and is executing a commercial market access strategy that includes state licensure and reimbursement codes [6][7] - The company anticipates launching the CNSide platform in Texas first, followed by expansion into additional states [6] Financial Outlook - The revenue contributions from the CNSide subsidiary are expected to become meaningful to Plus Therapeutics' operations in fiscal year 2026 [9]

As filed with the Securities and Exchange Commission on June 7, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 PLUS THERAPEUTICS, INC. (Exact name of Registrant as specified in its charter) (State or other jurisdiction of incorporation or organization) (Primary Standard Industrial Classification Code Number) Delaware 2834 33-0827593 (I.R.S. Employer Identification Number) 4200 Marathon Blvd., ...

Table of Contents As filed with the Securities and Exchange Commission August 9, 2023 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-1 REGISTRATION STATEMENT Under The Securities Act of 1933 Andrew Sims Chief Financial Officer Plus Therapeutics, Inc. 4200 Marathon Blvd., Suite 200 Austin, TX 78756 (737)-255-7194 (Name, address, including zip code, and telephone number, including area code, of agent for service) PLUS THERAPEUTICS, INC. (Exact name of Regi ...