HENDERSON HIGH INCOME TRUST PLC

PAYMENT OF SECOND INTERIM DIVIDEND

Henderson High Income Trust plc announces that a second interim dividend of 2.625p per ordinary share of 5p, in respect of the year ending 31 December 2024, will be paid on 26 July 2024 to holders registered at the close of business on 14 June 2024. This dividend is to be paid from the Company’s revenue account. The Company’s shares will go ex-dividend on 13 June 2024.