Corporate Events

RadioNano Therapeutics Inc. announced that it will receive in a round of funding on October 9, 2026. The transaction included participation from new investor Mitsui Kinzoku Company, Limited and returning investor Kyoto University Innovation Capital Co., Ltd.. The company will issue common shares in the transaction. On the same date, the company has received in its first tranche.

Mitsui Kinzoku Company, Limited reported earnings results for the first quarter ended June 30, 2026. For the first quarter, the company reported sales was JPY 201,597 million. Net income was JPY 16,824 million. Basic earnings per share from continuing operations was JPY 29.408.

Factorial Energy Inc. announced a strategic partnership with Mitsui Kinzoku Company, Limited to support the industrialization of its Solstice™ all-solid-state battery platform. Mitsui Kinzoku, one of the few companies in the world holding foundational solid-state electrolyte technology, signed a Joint Development Agreement to help power the scale up. The partnership positions Solstice™ at the center of an industry wide push toward commercializing all solid-state batteries. Mitsui Kinzoku is a leading producer of sulfide-based solid electrolytes for all-solid-state batteries, one of few companies worldwide with foundational technology in this space, and already the global leader in ultra-thin copper foil, with an estimated 90% share of the semiconductor market for that foil. That materials science expertise underpins its A-SOLiD™ sulfide solid electrolyte, unveiled in 2016 and advancing toward mass production at a dedicated plant in Saitama, Japan. Factorial remains the fabless innovator across the platform, leading cell design, process development, supply chain qualification, line integration, and manufacturing validation. As robotics, aerospace systems, and AI-enabled infrastructure ask more of the physical world, energy is fast becoming the defining constraint on what's possible. Factorial calls this the emergence of the energy layer - the battery infrastructure needed to power the next era of mobility, aerospace and physical intelligence. Built for that layer, Solstice™, Factorial's sulfide-based all-solid-state battery platform, delivers high energy density and improved thermal stability, with proprietary dry-cathode processing enabling more cost-effective manufacturing. This collaboration builds on Factorial's recent momentum, including strategic investments from IQT and POSCO Future M; its first commercial orders for passenger vehicles in January and for aerospace in July; expanded automotive and industrialization partnership programs; and its June 2026 Nasdaq listing.

Mitsui Mining & Smelting Co. Ltd. revised consolidated earnings guidance for the six months ending September 30, 2026 and full year ending March 31, 2027. For the six months ending September 30, 2025, the company expects net sales of JPY 420,000 million, operating profit of JPY 45,000 million, profit attributable to owners of parent of JPY 35,000 million and basic earnings per share of JPY 611.77 per share. For the full year ending March 31, 2027, the company expects net sales of JPY 850,000 million, operating profit of JPY 94,000 million, profit attributable to owners of parent of JPY 80,000 million and basic earnings per share of JPY 1,398.33 per share or after split effect JPY 139.83 per share.

Mitsui Kinzoku Company, Limited, 10 : 1, Stock Split or Significant Stock Dividend, Sep-29-2026

Gelion PLC announced that it has entered into a joint development agreement (JDA) with Mitsui Kinzoku Company, Limited to validate Gelion's NES™ Cathode Active Material (CAM) in high-energy-density liquid and solid-state sulfur battery cells capable of meeting automotive, stationary storage, consumer electronics and aerospace and defence requirements. The specific terms of the JDA are subject to confidentiality, but Mitsui Kinzoku Company, Limited will pay Gelion PLC GBP 2 million for the work in a series of staged payments linked to project milestones. The JDA provides an option for Mitsui Kinzoku Company, Limited to negotiate manufacturing and distribution rights for Gelion's NES™ CAM for certain territories in Asia. This agreement therefore establishes a pathway to the production of Gelion's NES™ CAM at industrial levels. Highlights include a joint development and funding agreement with Mitsui Kinzoku Company, Limited to validate Gelion's NES™ CAM in liquid and solid-state sulfur battery cells and establish a pathway to commercial-scale production of NES™, GBP 2 million paid collaboration, structured through staged payments linked to project milestones, and an option for Mitsui Kinzoku Company, Limited to negotiate manufacturing and distribution rights for Gelion's NES™ CAM in certain territories in Asia, on terms to be negotiated. Collaboration adds a major global Tier-1 battery materials manufacturer to Gelion PLC's partner network and supports engagement with OEMs in the automotive, stationary storage, consumer electronics and aerospace and defence sectors. This paid project further supports Gelion PLC's development activities relating to the NES™ cathode within sulfur battery systems and begins the work to scale the production of NES™ CAM materials ahead of future commercial adoption. Collaboration with Mitsui Kinzoku Company, Limited adds another major global Tier-1 partner to Gelion PLC's collaborators that will bring further commercial traction with OEMs. Gelion PLC now has collaborations with Mitsui Kinzoku Company, Limited and TDK (Japan), QinetiQ and Nissan (UK), National Laboratory of the Rockies (NLR) (US), and Max Planck Institute of Colloids and Interfaces (MPI) (Germany) reinforcing its leadership position in next-generation sulfur battery innovation.

Mitsui Kinzoku Company, Limited, Board Meeting, Aug 07, 2026. Agenda: To consider and resolved to implement a stock split, partially amend its Articles of Incorporation in connection with the stock split, and revise its dividend forecast.

The company closed its plan on August 4, 2026.

Nakabohtec Corrosion Protecting Co.,Ltd. (TSE:1787) announces a share repurchase program. Under the program, the company will repurchase 290,500 shares, representing 11.85% of its issued share capital, for ¥1,722.67 million. The program is valid till August 4, 2026.

Quemix Inc. announced that it has received funding from new investor Mitsui Kinzoku Company, Limited on August 3 , 2026. The Company issued convertible preferred stock in the transaction.

Mitsui Kinzoku Company, Limited, ¥ 140., Cash Dividend, Sep-29-2026

Mitsui Kinzoku Company, Limited, Q1 2027 Earnings Call, Aug 07, 2026

On July 14, 2026 Forge Nano, Inc. closed the transaction. The company has amended the terms of the transaction. The company has received $14.8 million in its second and final tranche. The transcation included participation from new investor Samsung SDI comprised of $10 million in the transaction. The company has received $97 million so far in the transaction.

Mitsui Kinzoku Company, Limited, Board Meeting, Jul 14, 2026. Agenda: To consider issuance of new shares as restricted stock compensation; and to consider other business matters.

On June 29, 2026, Mitsui Kinzoku Company, Limited announced its annual general meeting of shareholders on June 26, 2026, and declared voting results. Accordingly, the shareholder proposals regarding Agenda Item 5: Dividend of Shares, Agenda Item 6: Partial Amendment of Articles of Incorporation (Individual Disclosure of Executive Compensation), Agenda Item 7: Partial Amendment of Articles of Incorporation (Change of Company Name), were rejected.

Mitsui Kinzoku Company, Limited(TSE:5706) added to S&P Global 1200

Mitsui Kinzoku Company, Limited(TSE:5706) added to S&P International 700

Mitsui Kinzoku Company, Limited(TSE:5706) added to S&P TOPIX

Mitsui Kinzoku Company, Limited(TSE:5706) dropped from S&P Japan Mid Cap 100

Mitsui Kinzoku Company, Limited announced the proposal of partial amendment of the articles of incorporation, The Articles of Incorporation shall specify that the amount and details of compensation for each Director must be disclosed every year in its business and securities reports and that a monetary evaluation of all compensation must be conducted individually on a Japanese yen basis and its results are disclosed in these reports. The disclosure of the amount and details of individual executive compensation is extremely important to shareholders, as it enables them to examine the reasonableness of the compensation paid from the perspective of maximizing value for shareholders. In the capital markets of developed countries other than Japan, individual executive compensation is disclosed as a matter of course, and this has not inconvenienced investors. In Japan, the real problem is not that executive compensation is generally high but that the compensation system is disconnected from medium- to long-term shareholder value. If compensation is disclosed individually, it will be easier to measure cost effectiveness. The company also announced in the partial amendment that company name shall be changed from Mitsui Kinzoku Company, Limited to Environment First Co. Ltd.

Mitsui Kinzoku Company, Limited provided dividend guidance for the fiscal year-end of fiscal year ending March 31, 2027. For the period, the company expects dividend of JPY 140 per share compared to JPY 145 per share a year ago.

Mitsui Kinzoku Company, Limited proposed dividend for the fiscal year ending March 31, 2026, payable on June 29, 2026; provides guidance for the second quarter-end of fiscal year ending March 31, 2027. For the year, the company announced dividend of JPY 145 per share compared to JPY 90 per share a year ago. For the quarter, the company expects dividend of JPY 140 per share compared to JPY 100 per share a year ago. The Company has adopted a progressive dividend policy and aims to pay dividends at a DOE (dividend on equity) of approximately 3.5%. Regarding the final dividend for the fiscal year ending March 2026, as the final settlement value has increased from the full-year earnings forecast, based on the above basic policy, we will pay 145 yen per share, and the annual dividend will be 245 yen. The record date is March 31, 2026.

Mitsui Mining & Smelting Co. Ltd. provided consolidated earnings guidance for the six months ending September 30, 2026 and full year ending March 31, 2027. For the six months ending September 30, 2025, the company expects net sales of JPY 410,000 million, operating profit of JPY 49,000 million, profit attributable to owners of parent of JPY 37,000 million and basic earnings per share of JPY 646.83 per share. For the full year ending March 31, 2027, the company expects net sales of JPY 830,000 million, operating profit of JPY 91,000 million, profit attributable to owners of parent of JPY 75,000 million and basic earnings per share of JPY 1,311.14 per share.

Mitsui Kinzoku had been announced as a new limited partner in Emerald Technology Ventures' Industrial Innovation Fund. The investment underscores Mitsui Kinzoku’s commitment to accelerating innovation and expanding its global technology sourcing capabilities in response to rapidly evolving industrial and sustainability challenges. Through its partnership with Emerald, Mitsui Kinzoku gains direct access to a curated pipeline of high-potential startups addressing critical challenges across carbon neutrality, robotics, batteries, next gen energy and computing. Emerald’s platform, built on over 25 years of industrial venture investing and more than EUR 1,300 million in assets under management and advisory, provides limited partners not only capital deployment opportunities but also structured pathways to collaboration. This includes joint development, pilot projects, manufacturing partnerships, and commercial scaling opportunities, enabling Mitsui Kinzoku to translate emerging technologies into tangible business value faster. Emerald has established itself as a key bridge between global startups and industrial corporations, particularly in Japan. Over the past decade, the firm has built one of the most active industrial innovation networks in the region, annually convening innovation leaders from more than 100 Japanese corporations at its Tokyo Open Innovation Conference. Mitsui Kinzoku becomes Emerald’s 13th Japanese limited partner, joining industry leaders such as DIC, Mitsubishi Heavy Industries, and Nabtesco. This growing Japanese limited partner base reflects a broader shift: Corporations in Japan are increasingly turning to venture capital partnerships to stay competitive, with corporate venture investments now accounting for over 20% of global venture activity. Emerald’s model uniquely combines investment expertise with deep industrial integration, ensuring that partnerships deliver measurable strategic outcomes as well as financial returns. For Mitsui Kinzoku, this collaboration is expected to accelerate the identification of new business opportunities while strengthening its position in high-growth sectors. By combining its core strengths in materials science with Emerald’s global innovation reach, the company aims to drive both near-term impact and long-term transformation.

On May 13, 2026, Mitsui Mining & Smelting Co., Ltd. announced that it had received a written notice from Hidesho Co., Ltd., indicating their intention to submit three shareholder proposals at the 101st Annual General Meeting scheduled for June 26, 2026. The proposals included: (1) "Dividend on Shares," which sought to set the annual dividend per share at 500 yen, citing the current payout ratio as too low and an insult to shareholders; (2) "Partial Amendment of Articles of Incorporation (Individual Disclosure of Executive Compensation)," which called for individual disclosure of compensation amounts and details for each director in Japanese yen, arguing that such transparency is standard in developed markets and necessary for maximizing shareholder value; and (3) "Partial Amendment of Articles of Incorporation (Change of Company Name)," which proposed changing the company name to "Environment First Co., Ltd." to reflect a commitment to sustainability and environmental responsibility, referencing the company’s historical involvement in the Itai-itai disease. The Board of Directors, after deliberation, resolved to include these proposals as agenda items for the General Meeting but opposed each proposal individually. The Board opposed the dividend increase, citing the need for internal reserves and growth investments to achieve medium-term and long-term management goals. The Board rejected the individual compensation disclosure amendment, stating that current disclosure practices and compensation committee oversight sufficiently meet shareholder needs. The Board also opposed the name change, emphasizing the value of the current name and its alignment with the company’s history and brand, while reaffirming ongoing environmental improvement efforts.

Mitsui Kinzoku Company, Limited, Annual General Meeting, Jun 26, 2026, at 10:00 Tokyo Standard Time. Location: Gate City Hall, Underground Level 1, Gate City Ohsaki-West Tower, 1-11-1 Osaki, Shinagawa-ku Tokyo Japan Agenda: To consider the business report, consolidated financial statements, and reports from the financial auditor and the audit and supervisory committee on consolidated financial statements for the 101st fiscal year (from April 1, 2025 to March 31, 2026); to consider the reports on financial statements for the 101st fiscal year (from April 1, 2025 to March 31, 2026); to consider the appropriation of retained earnings; to consider the election of six directors excluding directors who are audit and supervisory committee members; to consider the election of four directors who are audit and supervisory committee members; and to consider revisions to the restricted stock compensation plan for the directors excluding directors who are audit and supervisory committee members.

Mitsui Kinzoku Company, Limited, Board Meeting, May 13, 2026. Agenda: To consider and approve to pay out dividend of surplus.

Mitsui Kinzoku Company, Limited announced that they will report fiscal year 2026 results on May 13, 2026

Mitsui Kinzoku Company, Limited announced that they will report Q1, 2027 results on Aug 07, 2026

On April 21, 2026, Forge Nano, Inc. amended the terms of the transaction and received $42.5 million in its second and final tranche of series D funding round with $82.5 million funded and committed to date. The company reported pre-money, pre-merger valuation as $1.2 billion.

Mitsui Kinzoku Company, Limited, 2026 Earnings Call, May 13, 2026

Mitsui Kinzoku Company, Limited - Interim Management Statement Call on May 21, 2026

Mitsui Kinzoku Company, Limited (TSE:5706) agreed to acquire Takehara Kousan Co., Ltd. on April 6, 2026. The expected completion of the transaction is July 1, 2026.

Mitsui Kinzoku Company, Limited(TSE:5706) added to S&P Japan Mid Cap 100

Mitsui Kinzoku Co. Ltd. announced that its Board of Directors, at a meeting held on February 13, 2026, resolved to change the company’s representative directors to strengthen its management structure and support long-term corporate value growth. Effective April 1, 2026, NOU Takeshi will transition from President and Representative Director to Chairman and Director, while IKENOBU Seiji will be promoted from Representative Director and Executive Vice President, as well as Senior General Manager of the Corporate Planning & Control Sector, to President and Representative Director. IKENOBU Seiji, born on February 12, 1971, joined the company in April 1995. Over the course of his career, he has held several leadership roles, including General Manager of the Ageo Copper Foil Strategic Production Planning Department in the Copper Foil Division (January 2015), and General Manager of the Business Planning Group in the Metals Sector (April 2016). In April 2020, he assumed additional responsibilities as Deputy General Manager of the Copper & Precious Metals Division. He was appointed Executive Officer and General Manager of the Corporate Planning Department in April 2021, later becoming Deputy Senior General Manager of the Corporate Planning & Control Sector in April 2023, while continuing to lead the Corporate Planning Department. In June 2023, he was named Director and Executive Officer with the same responsibilities. He advanced to Managing Director and Senior Executive Officer, as well as Senior General Manager of the Corporate Planning & Control Sector, in April 2024, and became Representative Director and Executive Vice President in April 2025, a position he currently holds. He is scheduled to be appointed President and Representative Director on April 1, 2026. He holds 9,353 shares of the company.

Mitsui Kinzoku Company, Limited revised dividend guidance for the Fiscal year ending March 31, 2026. For the period, the company expects dividend of JPY 140.00 per share compared to JPY 90.00 per share a year ago.

Mitsui Kinzoku Company, Limited revised earnings guidance for the fiscal year ending March 31, 2026 (from April 1, 2025 to March 31, 2026). For the period, the company expects Net sales JPY 750,000 Million, Operating profit JPY 117,000 Million, Profit attributable to owners of parent JPY 77,000 Million and Basic earnings per share JPY 1,346.19.

Mitsui Kinzoku Company, Limited, Board Meeting, Feb 13, 2026. Agenda: To change the Company's representative directors; and to consider other business matters.

Mitsui Kinzoku Company, Limited expected to report Fiscal Year 2026 results on May 13, 2026. This event was calculated by S&P Global (Created on April 20, 2026).

Mitsui Kinzoku Company, Limited, Q3 2026 Earnings Call, Feb 13, 2026

Explanation Meeting on the Engineered Materials Business

Mitsui Kinzoku Company, Limited Presents at Kyoto Summit, Dec-03-2025 . Venue: Tokyo, Japan.

Hi-Lex Corporation (TSE:7279) entered into share transfer agreement to acquire Mitsui Kinzoku ACT Corporation from Mitsui Mining & Smelting Co., Ltd. (TSE:5706) for ¥11.3 billion on May 13, 2025. A cash consideration of ¥11.3 billion will be paid by Hi-Lex Corporation for 14,800,000 shares. For the period ending March 31, 2025, Mitsui Kinzoku ACT Corporation reported total revenue of ¥95.83 billion, EBIT of ¥1.01 billion and net loss of ¥370 million. As of March 31, 2025, Mitsui Kinzoku ACT Corporation reported total assets of ¥78.21 billion and total common equity of ¥43.8 billion. The transaction is subject to approval by Japanese and foreign competition law authorities and other conditions, such as approval or authorization by the relevant authorities as required by law. The expected completion of the transaction is from October 2025 to December 2025. The transaction is expected to close on November 4, 2025. Hi-Lex Corporation (TSE:7279) completed the acquisition of Mitsui Kinzoku ACT Corporation from Mitsui Mining & Smelting Co., Ltd. (TSE:5706) on November 4, 2025.

Mitsui Kinzoku Company, Limited announced the dividend of JPY 100.00 per share for the second quarter of Fiscal year ending March 31, 2026, payable on December 9, 2025 against JPY 90.00 per share.

Mitsui Kinzoku Company, Limited revised dividend guidance for the full year of fiscal year ending March 31, 2026. For the year, the company revised dividend of JPY 110.00 per share compared to previous guidance of JPY 95.00 per share. Starting from fiscal year 2025, the company will adopt a progressive dividend policy and aim to pay dividends at a DOE (dividend on equity) of approximately 3.5%. In light of the revision of the full-year earnings forecast in 1. above, it will revise year-end dividend forecast to JPY 110, an increase of JPY 15 per share from JPY 95. As a result, combined with the interim dividend of JPY 100, its annual dividend forecast will be JPY 210 per share.

Mitsui Mining & Smelting Co. Ltd. revised consolidated earnings guidance for the fiscal year ending March 31, 2026. For the year, the company revised net sales of JPY 715,000 million, operating profit of JPY 78,000 million, profit attributable to owners of parent of JPY 43,000 million and basic earnings per share of JPY 751.86 per share compared to previous guidance of net sales of JPY 665,000 million, operating profit of JPY 46,000 million, profit attributable to owners of parent of JPY 17,000 million and basic earnings per share of JPY 297.30. Regarding the full-year forecast for the fiscal year ending March 31, 2026, compared to the forecast previously announced (August 8, 2025), sales, operating income, ordinary income, and net income attributable to owners of the parent are expected to increase due to factors such as solid demand for key products such as ultra-thin copper foil with carrier and electrolytic copper foil for AI servers and an improvement in the impact of precious metal prices in the catalysts division in the Engineered Materials segment, and an improvement in profits in the Metals segment due to rising metal prices and a weaker yen, as well as an improvement in inventory factors resulting from these factors.

Mitsui Kinzoku Company, Limited, ¥ 140., Cash Dividend, Mar-30-2026

ESG and DX Briefing Session

Mitsui Kinzoku Company, Limited, Q2 2026 Earnings Call, Nov 11, 2025