On 26 May 2021, the Company filed a prospectus supplement in connection with an amendment to its previously disclosed Sales Agreement with DNB to increase the size of its at-the-market programme pursuant to which the Company may now offer and sell, from time to time through DNB, shares of the Company’s common stock having an aggregate offering price up to US$100.0 million.

As of 25 May 2021, the Company has sold approximately 6 664 774 shares of common stock under the ATM and, as a result, shares of common stock with an aggregate offering price of up to approximately US$78.8 million remain available for sale.