EXHIBIT 99.1

Heat Biologics Provides First Quarter 2021 Business Update;
Reports Continued Progress on Oncology and COVID-19 Vaccine Programs

​

Durham, NC – May 5, 2021 – Heat Biologics, Inc. (“Heat”) (NASDAQ: HTBX), a clinical-stage biopharmaceutical company focused on developing first-in-class therapies to modulate the immune system, including multiple oncology product candidates and a novel COVID-19 vaccine, today provided financial, clinical and operational updates for the first quarter ended March 31, 2021.

​

Jeff Wolf, Chief Executive Officer of Heat, commented, “We continue to make tremendous progress on our clinical programs, including both our oncology program and COVID-19 vaccine program, which we recently advanced into scale-up manufacturing.  We are currently reviewing a variety of possible Phase 3 registration settings for HS-110 in combination with checkpoint inhibitors, following positive interim data from our Phase 2 trial in patients with advanced non-small cell lung cancer (NSCLC).”

​

“We recently announced promising new preclinical data around PTX-35, our potential first-in-class T-cell co-stimulatory antibody at the AACR Annual Meeting 2021. We are completing enrollment in our Phase 1 PTX-35 trial in patients with solid tumors and expect to share interim data later this year.”

​

“Finally, we have maintained a solid balance sheet with over $128 million of cash and short-term investments, which should provide us substantial runway to fund our current clinical programs and further expand our therapeutic portfolio. Moreover, we believe that upcoming catalysts and milestones have the potential to drive significant shareholder value in 2021,” concluded Mr. Wolf.

​

First Quarter 2021 Financial Results

​

About Heat Biologics, Inc.

​

Heat Biologics is a biopharmaceutical company focused on developing first-in-class therapies to modulate the immune system. Heat’s gp96 platform is designed to activate immune responses against cancer or infectious diseases. The Company has multiple product candidates in development leveraging the gp96 platform, including

HS-110, which has completed enrollment in its Phase 2 trial, and a COVID-19 vaccine program in preclinical development. In addition, Heat Biologics is also developing a pipeline of proprietary immunomodulatory antibodies and cell-based therapies, including PTX-35 and HS-130 in Phase 1 clinical trials.

​

For more information, please visit: www.heatbio.com, and also follow us on Twitter.

​

Forward Looking Statement

​

This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 on our current expectations and projections about future events. In some cases, forward-looking statements can be identified by terminology such as "may," "should," "potential," "continue," "expects," "anticipates," "intends," "plans," "believes," "estimates," and similar expressions. These statements are based upon current beliefs, expectation, and assumptions and include statements such as sharing interim data later this year from the Phase 1 PTX-35 trial in patients with solid tumors, cash and short-term investments providing Heat a substantial runway to fund Heat’s current clinical programs and further expand Heat’s therapeutic portfolio, and upcoming catalysts and milestones having the potential to drive significant shareholder value in 2021. These statements are subject to a number of risks and uncertainties, many of which are difficult to predict, including the timing of providing interim data from the Phase 1 PTX-35 trial in patients with solid tumors, ability of Heat's vaccine platform to provide prevention and treatment of cancer and infectious diseases, such as COVID-19,  the ability of Heat's therapies to perform as designed, to demonstrate safety and efficacy, as well as results that are consistent with prior results, the ability to enroll patients and complete the clinical trials on time and achieve desired results and benefits, especially in light of COVID-19, Heat's ability to obtain regulatory approvals for commercialization of product candidates or to comply with ongoing regulatory requirements, regulatory limitations relating to Heat's ability to promote or commercialize its product candidates for specific indications, acceptance of its product candidates in the marketplace and the successful development, marketing or sale of products, Heat's ability to maintain its license agreements, the continued maintenance and growth of its patent estate, its ability to establish and maintain collaborations, its ability to obtain or maintain the capital or grants necessary to fund its research and development activities and its cash and short-term investments providing significant runway to fund Heat’s current clinical programs and further expand Heat’s therapeutic portfolio , its ability to continue to maintain its listing on the Nasdaq Capital Market and its ability to retain its key scientists or management personnel, and the other factors described in Heat's  annual report on Form 10-K for the year ended December 31, 2020 filed with the SEC, and other subsequent filings with the SEC. The information in this release is provided only as of the date of this release, and Heat undertakes no obligation to update any forward-looking statements contained in this release based on new information, future events, or otherwise, except as required by law.

​

​

​

(tables follow)

​

​

HEAT BIOLOGICS, INC.

Consolidated Balance Sheets

​

​

​

​

HEAT BIOLOGICS INC.

Consolidated Statements of Operations and Comprehensive Loss

(unaudited)

​

​