New York—Oppenheimer Funds announced three senior marketing appointments across different disciplines. Peter Mintzberg has been named senior VP-strategy and market planning. Mintzberg was previously head of marketing and strategy-Latin America and Iberia at BlackRock Inc. Stephen Tisdalle has been appointed senior VP-brand marketing. He was previously managing director-strategic marketing services at Ogilvy & Mather, New York. Rupa Athreya has been named head of product development. He was previously head of strategy at Chase Wealth Management. All three are new roles and are based in New York.