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Isoray's Overview

Total employees37
HeadquartersRichland
Founded1998

Isoray, Inc. was a medical technology company dedicated to the development, manufacturing, and commercialization of Cesium-131 (Cs-131) brachytherapy seeds. These seeds are a type of internal radiation therapy used to treat various forms of cancer, with a significant focus on prostate cancer. Isoray's mission was to provide a highly targeted, effective, and minimally invasive treatment option for cancer patients, aiming to improve outcomes and quality of life. Beyond prostate cancer, the company actively explored and supported the use of its Cs-131 seeds for other cancers, including brain, lung, head and neck, gynecological, and colorectal cancers. Isoray was known for its proprietary isotope purification and seed manufacturing processes. In March 2023, Isoray completed a merger with Viewpoint Molecular Targeting, Inc., and the combined company was renamed Perspective Therapeutics, Inc. (NYSE: CATX). This strategic combination aimed to leverage Isoray's isotope expertise with Viewpoint's pipeline of targeted alpha-particle therapies.

Where is Isoray's Headquarters?

HQ Function

The Richland facility served as Isoray's corporate headquarters, primary manufacturing site for Cesium-131 brachytherapy seeds, and center for research and development activities.

Notable Features:

The headquarters housed specialized laboratories, cleanroom environments, and manufacturing equipment essential for the production of medical isotopes and brachytherapy seeds, adhering to strict regulatory standards.

Work Culture:

Isoray's work culture likely fostered innovation, precision, and a strong commitment to patient care. As a company in the medical device and oncology field, collaboration among scientific, engineering, and commercial teams would have been crucial.

HQ Significance:

This location was vital as it was the core of Isoray's production capabilities, enabling the company to supply its unique Cesium-131 seeds to medical facilities. Its presence in Richland, a city with a history in nuclear science, may have offered strategic advantages.

Values Reflected in HQ: The headquarters' focus on high-tech manufacturing and R&D mirrored Isoray's core values of innovation, quality, and advancing cancer treatment through scientific excellence.

Location:

Isoray's primary market for its Cesium-131 brachytherapy products was the United States. While the company may have engaged in limited international sales or sought partnerships for broader distribution, its main commercial activities, regulatory approvals, and patient treatments were concentrated in the U.S. healthcare system prior to its merger.

Street Address:

350 Hills Street, Suite 106

City:

Richland

State/Province:

WA

Country:

USA

Isoray's Global Presence

N/A

Address: N/A

N/A

Buying Intent Signals for Isoray

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Executive Team of Isoray

As of April 2025, Isoray' leadership includes:

Lori H. Woods - Chief Executive Officer & President
Jonathan R. Hunt - Chief Financial Officer, Secretary & Treasurer
Michael McCormick - Vice President of Sales and Marketing
Mark D. Austin - Controller and Principal Accounting Officer

Investors of Isoray

Isoray has been backed by several prominent investors over the years, including:

Vanguard Group, Inc.
BlackRock Inc.
Renaissance Technologies LLC
Geode Capital Management, LLC
State Street Corporation

Executive New Hires/Exits in the Last 12 Months

Hire0
Exits3

In the 12 months leading up to its merger with Viewpoint Molecular Targeting (completed March 2023), Isoray's executive team primarily saw transitions related to the merger. Key Isoray leadership roles concluded as the new entity, Perspective Therapeutics, formed its leadership. There were no new executive hires to Isoray's distinct leadership team during this period.

Departures

Lori H. Woods, Departed Isoray leadership team concurrent with the completion of the merger that formed Perspective Therapeutics.
Jonathan R. Hunt, Departed Isoray leadership team concurrent with the merger completion.
Michael McCormick, Departed Isoray leadership team concurrent with the merger completion.

Technology (Tech Stack) used by Isoray

Discover the tools Isoray uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Isoray Email Formats and Examples

Based on common corporate practices and patterns observed in similar companies, Isoray likely used email formats such as [first_initial][last]@isoray.com or [first].[last]@isoray.com. These are standard conventions for professional communication.

flast@isoray.com (e.g., jdoe@isoray.com) and first.last@isoray.com (e.g. jane.doe@isoray.com)

Format

lwoods@isoray.com

Example

70%

Success rate

News and media

GlobeNewswireMarch 1, 2023

Isoray and Viewpoint Molecular Targeting Complete Merger to Form Perspective Therapeutics

Isoray, Inc. and Viewpoint Molecular Targeting, Inc. announced the successful completion of their previously announced merger agreement. The combined company was renamed Perspective Therapeutics, Inc. and began trading on the NYSE American under the ticker symbol 'CATX'. The merger aimed to create a leader in targeted alpha-particle therapies for cancer....more

GlobeNewswireAugust 2, 2021

Isoray Announces First Patients Treated Using Cesium Total Body Irradiation (CTBI) To Treat Pediatric Leukemia

Isoray, Inc. announced that the first pediatric patients were treated using its proprietary Cesium-131 isotope in a novel approach to Total Body Irradiation (TBI) for conditioning prior to bone marrow transplant for high-risk leukemia. This marked a significant step in exploring new applications for Cesium-131....more

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