** Shares of Iluka Resources ILU.AX rise 3.8% to A$3.570, their highest levels since April 4

** Stock among the top gainers in the ASX 200 benchmark index

** The critical minerals miner announces the appointment of James Mactier as an independent non-executive director and chair, effective May 5

** Says Mactier's experience includes 24 years with Macquarie, with 15 years as co-head of its Metals and Energy Capital division, among other roles

** Stock down 29.3% YTD, including current session's moves

(Reporting by Manasi Dasa in Bengaluru)

((Manasi.DasaSundeep@thomsonreuters.com;))