AMERICAN SUPERCONDUCTOR CORP /DE/

Our corporate headquarters and Grid manufacturing operations are located in a leased 88,000-square-foot facility in Ayer, Massachusetts. Additionally, we have Grid manufacturing operations located in a leased 77,500 square-foot facility in Westminster, Massachusetts, a leased 43,000 square-foot facility in Silesian, Poland, and a leased 125,000 square-foot facility in Cornélio Procópio, Paraná, Brazil, as well as an owned 40,000 square-foot facility in Queensbury, New York, an owned 150,000 square-foot facility in Bordentown, New Jersey, an owned 80,000 square-foot facility in New Milford, Connecticut, an owned 20,000 square-foot facility in Florence, New Jersey, and an owned 632,100 square-foot facility in Cornélio Procópio, Paraná, Brazil.

We also occupy leased facilities located in Australia, Austria, India, Wisconsin, Washington, and the United Kingdom with a combined total of approximately 72,000 square feet of space. These leases have varying expiration dates through October 2030 which can generally be terminated at our request after a six-month advance notice. These locations focus primarily on research and development, sales and/or field service and do not have significant leases or physical presence. We believe all of these facilities are well-maintained and suitable for their intended uses.

The following table summarizes information regarding our significant properties, as of March 31, 2026: