Contact: Investor Relations ir@bsig.com (617) 369-7300 Exhibit 99.1 BrightSphere Reports Financial and Operating Results for the Second Quarter Ended June 30, 2024 • U.S. GAAP earnings per share of $0.29 for the quarter, compared to$0.27 for Q2'23 • U.S. GAAP net income attributable to controlling interests of $11.0 million for the quarter, compared to$11.4 million for Q2'23 • ENI earnings per share of $0.45 for the quarter, compared to$0.28 for Q2'23 • AUM of $112.6 billion at June 30, 2024 compared to ...