Xeris Pharmaceuticals Strengthens Its Patent Estate

Patents and patent applications provide additional coverage for XeriSol™ and XeriJect™ technology platforms

Xeris Pharmaceuticals, Inc. (Nasdaq: XERS), a pharmaceutical company leveraging its novel formulation technology platforms to develop and commercialize ready-to-use injectable and infusible drug formulations, today announced that it has recently been granted three new patents relating to its formulation technology platforms. The U.S. Patent and Trademark Office granted U.S. Patent Nos. 10,987,399 and 11,020,403 to Xeris, and the China Intellectual Property Office granted Chinese Patent No. ZL201580042185.5 to Xeris. The US ‘399 patent covers storage-stable formulations of pramlintide, and the US ‘403 patent covers storage-stable formulations of benzodiazepines, both using Xeris’ proprietary XeriSol™ formulation technology. The Chinese ’185.5 patent covers pre-filled syringes containing a variety of active pharmaceutical ingredients, using Xeris’ proprietary XeriJect™ technology. These patents, and related patent applications that are pending in these and other patent offices around the world, also cover the uses of such products in treating a variety of diseases and disorders including diabetes.

“Our strategy as a platform company is to patent early and often to continue to strengthen our position as a product development and formulation company. These new patent grants represent a significant expansion of Xeris’ intellectual property portfolio and help us to continue to invest in our innovation into life-saving therapies that can benefit patients worldwide,” said Paul R. Edick, Chairman and Chief Executive Officer of Xeris Pharmaceuticals. “With the recent opening of our Research & Development center in Chicago, led by our Chief Scientific Officer and Xeris co-founder Dr. Steve Prestrelski, we anticipate that we will continue to develop and bring to the market novel solutions for treating and preventing a variety of human diseases and disorders, improving the quality of life for our patients and their families.”

The granting of these patents expands the size of Xeris growing patent portfolio, bringing the total number of patents granted to Xeris worldwide to 121 (16 of which have been granted in the US). In addition to these new patent grants, Xeris has 120 patent applications pending worldwide, and expects to receive patent grants on several of those pending applications within the next several months. These patent grants, which provide Xeris the right to exclude others from making, selling, and using its proprietary technologies, will provide patent protection to Xeris on its proprietary pharmaceutical products for at least the next decade. All patents are owned by Xeris.

About Xeris Pharmaceuticals, Inc.

Xeris (Nasdaq: XERS) is a pharmaceutical company delivering innovative solutions to simplify the experience of administering important therapies that people rely on every day around the world.

With a novel technology platform that enables ready-to-use, room-temperature stable formulations of injectable drug products, the company is advancing a portfolio of solutions in various therapeutic categories, including its first commercial product, Gvoke® in the U.S. Its proprietary XeriSol™ and XeriJect™ formulation technologies have the potential to offer distinct advantages over conventional product formulations, including eliminating the need for reconstitution, enabling long-term, room-temperature stability, significantly reducing injection volume, and eliminating the requirement for intravenous (IV) infusion. With Xeris’ technology, new product formulations are designed to be easier to use by patients, caregivers, and health practitioners and help reduce costs for payers and the healthcare system.

Xeris is headquartered in Chicago, IL. For more information, visit www.xerispharma.com, or follow us on Twitter, LinkedIn or Instagram.

Forward-Looking Statements

Any statements in this press release about future expectations, plans and prospects for Xeris Pharmaceuticals, Inc., including statements regarding the market and therapeutic potential of its products and product candidates, expectations regarding clinical data or results from planned clinical trials, the timing or likelihood of regulatory approval and commercialization of its product candidates, the timing and likelihood of the consummation of the Strongbridge Biopharma acquisition, the timing or likelihood of expansion into additional markets, the timing or likelihood of identifying potential development and commercialization partnerships, the potential utility of its formulation platforms and other statements containing the words "will," "would," "continue," and similar expressions, constitute forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors, including, without limitation, the impact of COVID-19 on its business operations, its reliance on third-party suppliers for Gvoke® and Ogluo®, the regulatory approval of its product candidates, its ability to market and sell its products, if approved, and other factors discussed in the "Risk Factors" section of the most recently filed Quarterly Report on Form 10-Q filed with the United States Securities and Exchange Commission (the “SEC”), as well as discussions of potential risks, uncertainties, and other important factors in Xeris’ subsequent filings with the SEC. Any forward-looking statements contained in this press release speak only as of the date hereof, and Xeris expressly disclaims any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise.

The Company intends to use the investor relations portion of its website as a means of disclosing material non-public information and for complying with disclosure obligations under Regulation FD.

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