NEW YORK, May 12, 2025 (GLOBE NEWSWIRE) -- OTC Markets Group Inc. (OTCQX: OTCM), operator of regulated markets for trading 12,000 U.S. and international securities, today announced Northisle Copper and Gold Inc. (TSX-V: NCX; OTCQX: NTCPF), a Vancouver-based sustainable mineral resource company, has qualified to trade on the OTCQX® Best Market. Northisle Copper and Gold Inc. upgraded to OTCQX from the Pink® market. Northisle Copper and Gold Inc. begins trading today on OTCQX under the symbol "NTCPF." U.S. in ...