Sumitomo Metal Mining Co., Ltd. (SMMYY) is a publicly traded company in the Basic Materials sector, operating within the Industrial Materials industry. The company is headquartered in Tokyo, Japan. The current CEO is Nobuhiro Matsumoto.
SMMYY has IPO date of 2013-03-18, 7,496 full-time employees, listed on the Other OTC, a market capitalization of $17.93B.
Sumitomo Metal Mining Co., Ltd. is a diversified non-ferrous metals company headquartered in Tokyo, Japan, with operations spanning mining, smelting, and refining across global markets. The company operates through three core segments—Mineral Resources, Smelting & Refining, and Materials—producing a broad portfolio that includes copper, nickel, cobalt, gold, and precious metals alongside advanced materials for batteries, electronics, and industrial applications. Its Materials segment encompasses battery materials such as nickel hydroxides and lithium compounds, crystal materials for optical applications, powder materials for electronics and automotive use, catalysts for petrochemical processing, and specialized package materials. Beyond metals and materials, Sumitomo Metal Mining provides environmental and recycling services, water treatment solutions, and supporting businesses in real estate and marine transportation. Founded in 1590 and reorganized under its current name in 1952, the company combines centuries of mining heritage with modern expertise in advanced materials critical to electronics and energy storage industries.
