Key information relating to the cash dividend to be paid by AMSC

Lysaker, 20 May 2021

Dividend amount: USD 0.10 per share

Declared currency: USD

Last day including right: 25 May 2021

Ex-date: 26 May 2021

Record date: 27 May 2021

Payment date: on or about 4 June 2021

Date of approval: 19 May 2021

This information is published in accordance with the requirements of the Continuing Obligations.