Company: PSTV
Filing Date: 2025-05-15
Form Type: NT 10-Q
Source: 0000950170-25-072596
Chunk: 0

Company: PLUS THERAPEUTICS, INC.
Filing Date: 2025-05-15
Form: NT 10-Q
Chunk 0
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| UNITED STATES                      
 SECURITIES AND EXCHANGE COMMISSION 
 Washington, D.C. 20549             | OMB APPROVAL                     
 OMB Number: . . . . . 3235-0058  
 Expires: May 31, 2025            |
|:-----------------------------------|:---------------------------------|
|                                    | Estimated average burden hours   |
| FORM 12b-25                        | per response. . . . . . . . 2.50 |
| NOTIFICATION OF LATE FILING        |                                  |

| SEC FILE NUMBER |
| 001-34375       |

| CUSIP NUMBER |
| 72941H509    |

| (Check one): | ☐  Form 10-K ☐ Form 20-F ☐ Form 11-K ☒ Form 10-Q ☐ Form 10-D ☐ Form N-SAR ☐ Form N-CSR |

For Period Ended: March 31, 2025 ☐ Transition Report on Form 10-K ☐ Transition Report on Form 20-F ☐ Transition Report on Form 11-K ☐ Transition Report on Form 10-Q ☐ Transition Report on Form N-SAR For the Transition Period Ended:__________________________________ Nothing in this form shall be construed to imply that the Commission has verified any information contained herein. PART I — REGISTRANT INFORMATION PLUS THERAPEUTICS, INC. Full Name of Registrant _________________________ Former Name if Applicable 2710 Reed Road, Suite 160 Address of Principal Executive Office (Street and Number) Houston, TX, 77051 City, State and Zip Code

PART II -- RULES 12b-25(b) AND (c) If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)

|   | -a | The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or expense                                                                                                                                                                                                                                                                                                                                       |
| ☒ | -b | The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-CEN or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof,