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Plus Therapeutics Reports Third Quarter Financial Results and Recent Business Highlights

Key Takeaway: Plus Therapeutics reported its third quarter financial results, highlighting the successful introduction of the CNSide CSF diagnostics platform and positive Phase 1 trial results for REYOBIQ. The company aims to expand its commercial team and clarify its clinical development plan with the FDA. Additionally, it is focused on strengthening its financial position through strategic partnerships.

Market Sentiment Analysis

POSITIVE FACTORS

  • Successful introduction of the CNSide CSF diagnostics platform.
  • Positive results from the RESPECT-LM Phase 1 clinical trial.
  • Plans for expansion and clarification of clinical development.
  • Strong financial position and strategic partnerships.

Full Press Release Details

US market introduction of the CNSide® CSF diagnostics platform, with first national coverage agreement with UnitedHealthcare
Presented positive RESPECT-LM Ph1 clinical trial results
HOUSTON, Oct. 30, 2025 (GLOBE NEWSWIRE) -- Plus Therapeutics, Inc. (Nasdaq: PSTV) (“Plus” or the “Company”), a clinical-stage pharmaceutical company developing targeted radiotherapeutics with advanced platform technologies for central nervous system (CNS) cancers, today announces financial results for the third quarter ended September 30, 2025 and provides an overview of recent and upcoming business highlights.
“Our team continues to execute solidly across the three most important business verticals: diagnostics, therapeutics, and capital structure,” said Marc H. Hedrick, M.D., Plus Therapeutics President and Chief Executive Officer. “In the fourth quarter, we plan to build on growing momentum in these three areas as we expand our commercial team and footprint for CNSide, seek to clarify our clinical development and pivotal plan for REYOBIQ™ with the FDA, and bolster our financial position in the capital markets.”

Q3 2025 AND RECENT HIGHLIGHTS

Corporate

REYOBIQ™ Clinical Trials

CNSide CSF Assay Platform

Q3 2025 FINANCIAL RESULTS

About Plus TherapeuticsHeadquartered in Houston, Texas, Plus Therapeutics, Inc. is a clinical-stage pharmaceutical company developing targeted radiotherapeutics for difficult-to-treat cancers of the central nervous system with the potential to enhance clinical outcomes. Combining image-guided local beta radiation and targeted drug delivery approaches, the Company is advancing a pipeline of product candidates with lead programs in LM and recurrent glioblastoma (GBM). The Company has built a supply chain through strategic partnerships that enable the development, manufacturing, and future potential commercialization of its products. For more information, visithttps://plustherapeutics.com/.

About REYOBIQ (rhenium 186re obisbemeda)

REYOBIQ (rhenium 186re obisbemeda) is a novel injectable radiotherapy specifically formulated to deliver direct targeted high dose radiation in CNS tumors in a safe, effective, and convenient manner to optimize patient outcomes. REYOBIQ has the potential to reduce off target risks and improve outcomes for CNS cancer patients, versus currently approved therapies, with a more targeted and potent radiation dose. Rhenium-186 is an ideal radioisotope for CNS therapeutic applications due to its short half-life, beta energy for destroying cancerous tissue, and gamma energy for real-time imaging. REYOBIQ is being evaluated for the treatment of recurrent glioblastoma and leptomeningeal metastases in the ReSPECT-GBM and ReSPECT-LM clinical trials. ReSPECT-GBM is supported by an award from the National Cancer Institute (NCI), part of the U.S. National Institutes of Health (NIH), and ReSPECT-LM is funded by a three-year $17.6M grant by the Cancer Prevention & Research Institute of Texas (CPRIT).
About CNSide Diagnostics, LLCCNSide Diagnostics, LLC is a wholly owned subsidiary of Plus Therapeutics, Inc. that develops and commercializes proprietary laboratory-developed tests, such as CNSide, designed to identify tumor cells that have metastasized to the central nervous system in patients with carcinomas and melanomas. The CNSide CSF Assay Platform enables quantitative analysis of the cerebrospinal fluid that informs and improves the management of patients with leptomeningeal metastases.
Cautionary Statement Regarding Forward-Looking StatementsThis press release contains statements that may be deemed “forward-looking statements” within the meaning of U.S. securities laws, including statements regarding clinical trials, expected operations and upcoming developments. All statements in this press release other than statements of historical fact are forward-looking statements. These forward-looking statements may be identified by future verbs, as well as terms such as “expect” “potential,” “anticipating,” “planning” and similar expressions or the negatives thereof. Such statements are based upon certain assumptions and assessments made by management in light of their experience and their perception of historical trends, current conditions, expected future developments and other factors they believe to be appropriate.
These statements include, without limitation, statements regarding the potential promise of REYOBIQ, expectations as to the Company’s future performance, including the next steps in developing the Company’s product candidates; the Company’s clinical trials, including statements regarding the timing and characteristics of the ReSPECT-LM single dose and multi-dose clinical trials; the continued evaluation of REYOBIQ™ including through evaluations in additional patient cohorts; and expectations regarding receipt of grant funds.
The forward-looking statements included in this press release could differ materially from those expressed or implied by these forward-looking statements because of risks, uncertainties, and other factors that include, but are not limited to, the following: the Company’s ability to maintain the listing of its common stock on Nasdaq; risks related to a halt in trading or delisting of the Company’s common stock on Nasdaq; the early stage of the Company’s product candidates and therapies; the results of the Company’s research and development activities, including uncertainties relating to the clinical trials of its product candidates and therapies; the Company’s liquidity and capital resources and its ability to raise additional cash; the outcome of the Company’s partnering/licensing efforts, risks associated with laws or regulatory requirements applicable to it; market conditions, product performance, litigation or potential litigation, and competition within the cancer diagnostics and therapeutics field; ability to develop and protect proprietary intellectual property or obtain licenses to intellectual property developed by others on commercially reasonable and competitive terms; challenges associated with radiotherapeutic manufacturing, production and distribution capabilities necessary to support the Company’s clinical trials and any commercial level product demand; and material security breach or cybersecurity attack affecting the Company’s operations or property. This list of risks, uncertainties, and other factors is not complete. The Company discusses some of these matters more fully, as well as certain risk factors that could affect its business, financial condition, results of operations, and prospects, in its reports filed with the SEC, including its annual report on Form 10-K for the fiscal year ended December 31, 2024, quarterly reports on Form 10-Q, and current reports on Form 8-K. These filings are available for review through the SEC’s website at www.sec.gov. Any or all forward-looking statements the Company makes may turn out to be wrong and can be affected by inaccurate assumptions it might make or by known or unknown risks, uncertainties, and other factors, including those identified in this press release. Accordingly, you should not place undue reliance on the forward-looking statements made in this press release, which speak only as of its date. The Company assumes no responsibility to update or revise any forward-looking statements to reflect events, trends or circumstances after the date they are made unless the Company has an obligation under U.S. federal securities laws to do so.

Investor ContactCORE IRinvestor@plustherapeutics.com

PLUS THERAPEUTICS, INC.CONDENSED CONSOLIDATED BALANCE SHEETS(UNAUDITED)(in thousands, except share and par value data)
September 30, 2025 December 31, 2024
Assets
Current assets:
Cash and cash equivalents $ 13,289 $ 76
Investments 3,312 3,530
Grant receivable 571
Other current assets 985 1,082
Total current assets 17,586 5,259
Property and equipment, net 273 448
Operating lease right-of-use assets 20 73
Goodwill 372 372
Intangible assets, net 374 469
Other assets 45 12
Total assets $ 18,670 $ 6,633
Liabilities and Stockholders’ Equity (Deficit)
Current liabilities:
Accounts payable and accrued expenses $ 11,623 $ 11,288
Operating lease liability 21 44
Deferred grant liability 1,972 927
Line of credit 3,292
Total current liabilities 13,616 15,551
Noncurrent operating lease liability 31
Total liabilities 13,616 15,582
Stockholders’ equity (deficit):
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 1,952 shares issued and outstanding as of September 30, 2025 and December 31, 2024, respectively
Common stock, $0.001 par value; 2,000,000,000 shares authorized; 131,863,969 shares issued; and 131,605,544 shares outstanding as of September 30, 2025, and 100,000,00 shares authorized; 6,154,758 shares issued; and 5,896,333 shares outstanding as of December 31, 2024, respectively 132 6
Treasury stock (at cost), 258,425 shares as of September 30, 2025 and December 31, 2024, respectively (500 ) (500 )
Additional paid-in capital 518,190 485,024
Accumulated deficit (512,768 ) (493,479 )
Total stockholders’ equity (deficit) 5,054 (8,949 )
Total liabilities and stockholders’ equity $ 18,670 $ 6,633
PLUS THERAPEUTICS, INC.CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS(UNAUDITED)(in thousands, except share and per share data)
For the Three Months Ended September 30, For the Nine Months Ended September 30,
2025 2024 2025 2024
Grant revenue $ 1,397 $ 1,456 $ 3,846 $ 4,412
Operating expenses:
Research and development 2,436 2,858 5,438 8,394
General and administrative 3,443 2,397 7,964 6,813
Total operating expenses 5,879 5,255 13,402 15,207
Operating loss (4,482 ) (3,799 ) (9,556 ) (10,795 )
Other income (expense):
Interest income 59 80 87 219
Interest expense (61 ) (548 ) (122 )
Financing expenses (3,061 ) (3,545 )
Warrant issuance costs (54 ) (964 ) (486 )
Change in fair value of derivative instruments 960 (2,631 ) 5,654
Total other income (expense) 59 925 (7,117 ) 1,720
Net loss $ (4,423 ) $ (2,874 ) $ (16,673 ) $ (9,075 )
Per share information
Net loss per share of common stock – basic $ (0.04 ) $ (0.37 ) $ (0.29 ) $ (1.46 )
Weighted average number of shares of common stock outstanding – basic 107,428,969 7,855,763 57,845,406 6,232,123
Net loss per share of common stock – diluted $ (0.04 ) $ (0.37 ) $ (0.29 ) $ (1.67 )
Weighted average number of shares of common stock outstanding – diluted 107,428,969 7,855,763 57,845,406 8,452,338
PLUS THERAPEUTICS, INC.CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS(UNAUDITED)(In thousands)
For the Nine Months Ended September 30,
2025 2024
Cash flows used in operating activities:
Net loss $ (16,673 ) $ (9,075 )
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization 300 524
Amortization of deferred financing costs and debt discount 20
Stock-based compensation expense 827 422
Noncash financing expenses 3,061 3,545
Change in fair value of derivative instruments 2,631 (5,654 )
Accretion of discount on short-term investments (19 ) (70 )
Reduction in the carrying amount of operating lease right-of-use assets 53 96
Gain on sale of assets (16 )
Increases (decreases) in cash caused by changes in operating assets and liabilities:
Other assets 635 704
Accounts payable and accrued expenses (6,308 ) 1,326
Change in operating lease liabilities (54 ) (97 )
Deferred grant liability 1,045 (1,084 )
Net cash used in operating activities (14,518 ) (9,343 )
Cash flows used in investing activities:
Purchases of property and equipment (37 ) (135 )
Proceeds from sale of property and equipment 30
Purchase of short-term investments (11,068 ) (7,145 )
Redemption of short-term investments 11,305 3,650
Purchase of intangible assets (7 ) (545 )
Net cash provided by (used in) investing activities 223 (4,175 )
Cash flows provided by financing activities:
Principal payments of term loan obligation (3,996 )
Proceeds from credit facility 3,292
Repayment of credit facility (3,292 )
Payment of financing costs (2,250 )
Proceeds from issuance of notes payable and warrants 3,738
Repayment of notes payable (3,703 )
Purchase of treasury stock (374 )
Proceeds from sale of common stock, pre-funded warrants and warrants 15,927 7,265
Proceeds from sale of common stock under Lincoln Park Purchase Agreement 19,612
Payment to investors pursuant to Letter Agreement (2,293 )
Offering costs for sale of common stock (231 )
Net cash provided by financing activities 27,508 6,187
Net increase (decrease) in cash and cash equivalents 13,213 (7,331 )
Cash and cash equivalents at beginning of period 76 8,554
Cash and cash equivalents at end of period $ 13,289 $ 1,223
Supplemental disclosure of cash flows information:
Cash paid during period for:
Interest $ 539 $ 32
Supplemental schedule of non-cash investing and financing activities:
Unpaid liability to investors pursuant to Letter Agreement $ 6,391 $
Exchange of warrants for notes payable $ 3,694 $
Redemption of notes by issuance of common stock, pre-funded warrants and warrants $ 3,512 $
Unpaid offering cost $ 252 $

Frequently Asked Questions

What were the key highlights from Plus Therapeutics' Q3 2025?

Key highlights include the successful launch of the CNSide diagnostics platform and positive results from the RESPECT-LM Phase 1 trial.

What is REYOBIQ and its significance?

REYOBIQ is a novel injectable radiotherapy aimed at treating CNS tumors, with potential for improved patient outcomes.

How is Plus Therapeutics expanding its business?

The company plans to expand its commercial team and clarify its clinical development plans with the FDA.

What are the future plans for Plus Therapeutics?

Future plans include bolstering financial position and advancing clinical trials for REYOBIQ.

Last updated: Oct 30, 2025