Isoray Announces Pricing of $45 Million Public Offering

Feb 4, 2021

RICHLAND, Wash., February 4, 2021 – Isoray, Inc. (NYSE AMERICAN: ISR), a medical technology company and innovator in seed brachytherapy powering expanding treatment options throughout the body, announced the pricing of its public offering of 36,000,000 shares of its common stock at an offering price to the public of $1.25 per share. Isoray intends to use the gross proceeds of approximately $45 million, before deducting underwriting discounts and commissions and estimated offering expenses, from the offering to fund operations, research and development efforts, potential future acquisitions of complementary businesses or technologies, sales and marketing initiatives, and for general corporate purposes, including general and administrative expenses, capital expenditures, and for general working capital purposes.

The offering is expected to close on February 8, 2021, subject to the satisfaction of customary closing conditions. In addition, Isoray granted the underwriters a 30-day option to purchase up to an additional 15% of the shares of common stock offered in the public offering.

Oppenheimer & Co. Inc. is acting as sole book-running manager for the offering. Lake Street Capital Markets and Northland Capital Markets are acting as co-managers for the offering.

The shares are being offered by Isoray pursuant to a “shelf” registration statement on Form S-3 that was originally filed on January 23, 2020 and declared effective by the Securities and Exchange Commission (“SEC”) on February 4, 2020, and the base prospectus contained therein (File No. 333-236025). A preliminary prospectus supplement and accompanying prospectus relating to the offering has been filed with the SEC and is available on the website of the SEC at When available, copies of the final prospectus supplement and accompanying prospectus relating to and describing the terms of the offering will be available on the website of the SEC and may also be obtained from: Oppenheimer & Co. Inc., Attention: Syndicate Prospectus Department, 85 Broad Street, 26th Floor, New York, New York 10004, by telephone at 212-667-8055, or by email at

Before investing in the offering, you should read in their entirety the preliminary prospectus supplement, the accompanying prospectus and the other documents that Isoray has filed with the SEC that are incorporated by reference in the preliminary prospectus supplement and the accompanying prospectus, which provide more information about Isoray and the offering.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such jurisdiction.

Investor Relations: Mark Levin (501) 255-1910
Media and Public Relations: Sharon Schultz (302) 539-3747

About Isoray, Inc.
Isoray, Inc., through its subsidiary, Isoray Medical, Inc. is the sole producer of Cesium-131 brachytherapy seeds, which are expanding brachytherapy options throughout the body. Learn more about this innovative Richland, Washington company and explore the many benefits and uses of Cesium-131 by visiting Follow us on LinkedIn and Twitter. Join us on Facebook.

Safe Harbor Statement
Statements in this news release about Isoray’s future expectations, including: the use of proceeds of the offering, market conditions that may affect the timing, terms, and conditions of the offering, our ability to satisfy the conditions to closing of the offering and other matters affecting our ability to consummate the offering on terms acceptable to us, the impact of COVID-19 on our financial results, suppliers, scheduling of procedures, and employees, lower isotope costs, advantages of our products including Blu Build and the GammaTile Therapy delivery system, whether interest in and use of our Cesium-131, commercially known as Cesium Blu, products will increase or continue, whether use of Cesium-131 in non-prostate applications will continue to increase revenue, whether further manufacturing and production process improvements will be completed or will result in lower costs, whether our market presence and growth will continue, the positive industry data fueling renewed interest in brachytherapy, strong patient results, the perception by patients of quality of life outcomes, and all other statements in this release, other than historical facts, are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 (“PSLRA”). This statement is included for the express purpose of availing Isoray, Inc. of the protections of the safe harbor provisions of the PSLRA. It is important to note that actual results and ultimate corporate actions could differ materially from those in such forward-looking statements based on such factors as physician acceptance, training and use of our products, market acceptance and recognition of our products, our ability to successfully manufacture, market, and sell our Blu Build products and the success of the GammaTile Therapy, the length and severity of the COVID -19 pandemic, our ability to manufacture our products in sufficient quantities to meet demand within required delivery time periods while meeting our quality control standards, our ability to enforce our intellectual property rights, whether additional studies are released that support the conclusions of past studies, whether ongoing patient results with our products are favorable and in line with the conclusions of clinical studies and initial patient results, patient results achieved when our products are used for the treatment of cancers and malignant diseases, successful completion of future research and development activities, whether we, our distributors and our customers will successfully obtain and maintain all required regulatory approvals and licenses to market, sell and use our products in its various forms, continued compliance with ISO standards, the success of our sales and marketing efforts, changes in reimbursement rates, the procedures and regulatory requirements mandated by the FDA for 510(k) approval and reimbursement codes, changes in laws and regulations applicable to our products, the scheduling of physicians who either delay or do not schedule patients in periods anticipated, the use of competitors’ products in lieu of our products, less favorable reimbursement rates than anticipated for each of our products, and other risks detailed from time to time in Isoray’s reports filed with the SEC. Unless required to do so by law, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Investor Relations:

Mark Levin

Global IR Group
(501) 255-1910

Media and Public Relations:

Sharon Schultz
Schultz Public Relations
(302) 539-3747