** U.S.-listed shares of South African miner Sibanye Stillwater SBSW.N fall 4.4% to $3.81; set for the worst day in over two weeks

** Company says founder and dealmaker Neal Froneman to retire as CEO at the end of September this year

** Richard Stewart, the current head of operations in South Africa, to succeed Froneman

** Company's South African listing SSWJ.J ends 4% lower

** RBC cuts PT on SBSW to $4.25 from $6

** YTD, SBSW has gained over 15%, as gold prices have hit multiple record highs

(Reporting by Lisa Mattackal)

((LisaPauline.Mattackal@thomsonreuters.com;))