SONN Sonnet BioTherapeutics Holdings Inc

Sonnet BioTherapeutics Holdings, Inc. (NASDAQ:SONN) ("Sonnet" or the "Company"), a biopharmaceutical company developing innovative targeted biologic drugs, announced today that the SB221 study of SON-1010 (recombinant human Interleukin-12 linked to Sonnet’s fully-human albumin binding domain or IL12-FHAB) dosed in combination with atezolizumab (Tecentriq®) will be presented as a ‘Trial in Progress’ poster at ASCO 2024. Study SB221 (NCT05756907) is a Phase 1b/2a multicenter, dose-escalation, and proof-of-concept clinical study to assess the safety, tolerability, PK, PD, and efficacy of SON-1010 administered SC, either alone or in combination with a fixed dose of atezolizumab given IV. The work will be presented in a poster session at the upcoming American Society of Clinical Oncology (ASCO) Annual Meeting 2024, to be held May 31 to June 4 in Chicago, Illinois.

Presentation details:

Title: SB221: A proof-of-concept study to assess the combination of SON-1010 (IL12-F AB) and atezolizumab in patients with platinum-resistant ovarian cancerSession Title: Gynecologic CancerPresentation Type: “Trials in Progress” PosterSession Date and Time: Monday June 3, 2024, 9:00 AM-12:00 PM CDTAbstract Number: TPS5629Location: Hall APoster Board Number: 496a

About Sonnet BioTherapeutics Holdings, Inc.

Sonnet BioTherapeutics is an oncology-focused biotechnology company with a proprietary platform for innovating biologic drugs of single or bifunctional action. Known as FHAB (Fully Human Albumin Binding), the technology utilizes a fully human single chain antibody fragment (scFv) that binds to and "hitch-hikes" on human serum albumin (HSA) for transport to target tissues. Sonnet's FHAB was designed to specifically target tumor and lymphatic tissue, with an improved therapeutic window for optimizing the safety and efficacy of immune modulating biologic drugs. FHAB is the foundation of a modular, plug-and-play construct for potentiating a range of large molecule therapeutic classes, including cytokines, peptides, antibodies, and vaccines.

Forward-Looking Statements

This press release contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 and Private Securities Litigation Reform Act, as amended, including those relating to the Company’s review of strategic alternatives, the Company’s ability to complete any transaction as a result of the strategic review process, the Company's cash runway, the Company's product development, clinical and regulatory timelines, market opportunity, competitive position, possible or assumed future results of operations, business strategies, potential growth opportunities and other statements that are predictive in nature. These forward-looking statements are based on current expectations, estimates, forecasts and projections about the industry and markets in which we operate and management's current beliefs and assumptions.

These statements may be identified by the use of forward-looking expressions, including, but not limited to, "expect," "anticipate," "intend," "plan," "believe," "estimate," "potential,” "predict," "project," "should," "would" and similar expressions and the negatives of those terms. These statements relate to future events or the Company’s financial performance and involve known and unknown risks, uncertainties, and other factors which may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Such factors include those set forth in the Company's filings with the Securities and Exchange Commission. Prospective investors are cautioned not to place undue reliance on such forward-looking statements, which speak only as of the date of this press release. The Company undertakes no obligation to publicly update any forward-looking statement, whether as a result of new information, future events or otherwise.

Sonnet BioTherapeutics Investor Contact

Jack YauchSolebury Strategic Communications862-754-1024jyauch@soleburystrat.com

SOURCE: Sonnet BioTherapeutics Holdings, Inc.