Henderson High Income Trust Regulatory News (HHI)

JANUS HENDERSON FUND MANAGEMENT UK LIMITED

HENDERSON HIGH INCOME TRUST PLC

LEGAL ENTITY IDENTIFIER: 213800OEXAGFSF7Y6G11

3 July 2025

HENDERSON HIGH INCOME TRUST PLC

Portfolio Update

In accordance with Listing Rule 11.7.8 the Company discloses that as at 30 June 2025 it held the following investments in other listed closed-ended investment funds which do not have a stated investment policy to invest no more than 15% of their total assets in other listed closed-ended investment funds:

For further information, please call:

Samantha McDonald

For and on behalf of Janus Henderson Secretarial Services UK Limited

Corporate Secretary to Henderson High Income Trust plc

Telephone: 020 7818 2936

Harriet Hall

PR Director, Investment Trusts

Janus Henderson Investors

Telephone: 020 7818 2919