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OS Therapies to Attend Upcoming Medical, Financial and Industry Conferences

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OS Therapies (NYSE American: OSTX) plans to attend several key medical, financial and industry conferences in May and June 2026.

The company will share 2.5-year overall survival data, hold partnering and investor meetings, participate in a BIO panel, and present additional data.

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  • ASCO 2026: 2.5-Year Overall Survival Data
  • Jefferies Healthcare Conference: Partnering & Investor meetings
  • BIO International Convention: Panel Participation
  • MIB Agents Factor Osteosarcoma Conference: Data Presentation

New York, New York and Rockville, Maryland--(Newsfile Corp. - May 26, 2026) - OS Therapies, Inc. (NYSE American: OSTX) ("OS Therapies" or "the Company"), the world leader in gene-edited, listeria-based cancer immunotherapies, announced that it will attend upcoming medical, financial and scientific conferences:

  • BIO International Convention 2026
    Where: San Diego, CA
    When: June 22, 2026 to June 25, 2026
    What: Partnering meetings and panel participation - "ADCs: How can we make bringing ADCs to market a faster, simpler, and more collaborative process?"

About OS Therapies

OS Therapies is a clinical stage oncology company focused on the identification, development, and commercialization of treatments for Osteosarcoma (OS) and other solid tumors. The Company is the world leader in listeria-based cancer immunotherapies. OST-HER2, the Company's lead asset, is an immunotherapy leveraging the immune-stimulatory effects of Listeria bacteria to initiate a strong immune response targeting the HER2 protein. OST-HER2 is designed to target two mutated extracellular epitopes and one mutated intracellular epitope of the HER2 oncogene, requiring only one of these three epitopes to be present in a tumor (or micro-metastasis) to trigger the desired immune response. OST-HER2 has received Orphan Drug Designation (ODD), Fast Track Designation (FTD) and Rare Pediatric Disease Designation (RPDD) from the U.S. Food & Drug Administration and has received ODD, FTD and ATMP from the European Medicines Agency.

The Company reported positive data in its Phase 2b clinical trial of OST-HER2 in recurrent, fully resected, lung metastatic osteosarcoma, demonstrating clinically significant benefit in the 12-month event free survival (EFS) primary endpoint of the study and the overall survival (OS) secondary endpoint. The Company anticipates receiving a Biologics License Application (BLA) from the U.S. FDA for OST-HER2 in osteosarcoma in 2026 and, if approved, would become eligible to receive a Priority Review Voucher that it could then sell. The Company also anticipates receiving Conditional Marketing Authorisations from the U.K.'s Medicines and Healthcare products Regulatory Agency and the EMA for OST-HER2 in 2026. OST-HER2 has completed a Phase 1 clinical study primarily in breast cancer patients, in addition to showing preclinical efficacy data in various models of breast cancer. OST-HER2 has been conditionally approved by the U.S. Department of Agriculture for the treatment of canines with osteosarcoma. The Company also anticipates reading out data from a Phase 1b study of OST-504 in castration resistant prostate cancer in the first half of 2026.

In addition, OS Therapies is advancing its next-generation Antibody Drug Conjugate (ADC) and Drug Conjugates (DC), known as tunable ADC (tADC), which features tunable, tailored antibody-linker-payload candidates. This platform leverages the Company's proprietary silicone Si-Linker and Conditionally Active Payload (CAP) technology, enabling the delivery of multiple payloads per linker. For more information, please visit www.ostherapies.com.

Forward-Looking Statements

Statements in this press release about future expectations, plans and prospects, as well as any other statements regarding matters that are not historical facts, may constitute forward-looking statements within the meaning of the federal securities laws. These forward-looking statements and terms such as "anticipate," "expect," "intend," "may," "will," "should" or other comparable terms involve risks and uncertainties because they relate to events and depend on circumstances that will occur in the future. Those statements include statements regarding the intent, belief or current expectations of OS Therapies and members of its management, as well as the assumptions on which such statements are based. OS Therapies cautions readers that forward-looking statements are based on management's expectations and assumptions as of the date of this press release and are subject to certain risks and uncertainties that could cause actual results to differ materially, including, but not limited to our expected to provide cash runway into 2027, the intended use of net proceeds from the offering, the potential approval of OST-HER2 by the U.S. FDA and other risks and uncertainties described in "Risk Factors" in the Company's most recent Annual Report on Form 10-K and other subsequent documents the Company files with the Securities and Exchange Commission. Any forward-looking statements contained in this press release speak only as of the date hereof, and, except as required by the federal securities laws, OS Therapies specifically disclaims any obligation to update any forward-looking statement, whether as a result of new information, future events or otherwise.

OS Therapies Contact Information:

Investor Relations
Harrison Seidner, PhD
WaterSeid Partners
OSTX@waterseid.com

Public Relations
Stephanie Chen
Elev8 New Media
media@ostherapies.com

https://x.com/OSTherapies
https://www.instagram.com/ostherapies/
https://www.facebook.com/OSTherapies/
https://www.linkedin.com/company/os-therapies/

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/298851

FAQ

Which conferences will OS Therapies (OSTX) attend in May and June 2026?

OS Therapies will attend ASCO 2026, Jefferies Global Healthcare Conference 2026, BIO International Convention 2026, and the MIB Agents Factor Osteosarcoma Conference 2026. According to OS Therapies, these events span oncology, healthcare investing, partnering, and osteosarcoma-focused scientific discussions.

When and where will OS Therapies present 2.5-year overall survival data at ASCO 2026?

OS Therapies plans to announce 2.5-year overall survival data at ASCO 2026 in Chicago, IL, from May 29 to June 2, 2026. According to OS Therapies, this data presentation will occur during the American Society of Clinical Oncologists annual meeting.

What is OS Therapies (OSTX) planning at the Jefferies Healthcare Conference 2026?

At the Jefferies Global Healthcare Conference 2026 in New York, NY, OS Therapies plans partnering meetings and select investor meetings from June 2 to June 4, 2026. According to OS Therapies, these interactions target strategic collaborations and engagement with the financial community.

How will OS Therapies participate in BIO International Convention 2026?

OS Therapies expects to hold partnering meetings and join a panel at BIO International Convention 2026 in San Diego, CA, June 22–25, 2026. According to OS Therapies, the panel will address making ADC market entry faster, simpler and more collaborative.

What will OS Therapies present at the MIB Agents Factor Osteosarcoma Conference 2026?

OS Therapies plans a data presentation at the MIB Agents Factor Osteosarcoma Conference 2026 in Columbus, OH, from June 25 to June 27, 2026. According to OS Therapies, this conference focuses on osteosarcoma, bringing together patients, clinicians and researchers.