Press Release

Ref. No: HSCL / Stock-Ex/2026-27/33 Date: 19/06/2026 E-mail: monika@himadri.com Ref: Listing Code: 500184 Ref: Listing Code: HSCL BSE Limited National Stock Exchange of India Ltd Department of Corporate Services Exchange Plaza, C-1, Block-G P. J. Towers, 25th Floor, Bandra Kurla Complex, Dalal Street, Bandra (E) Mumbai- 400 001 Mumbai- 400 051 Sub: Press Release titled “Himadri Speciality Chemical Increases Stake in International Battery Company to 20.47%, Reinforcing Commitment to Advanced Battery Technologies” Dear Sir/ Madam, We are enclosing herewith for your information a copy of the Press Release titled “Himadri Speciality Chemical Increases Stake in International Battery Company to 20.47%, Reinforcing Commitment to Advanced Battery Technologies.” You are requested to take same on record. This Communication is also available on the website of the Company at www.himadri.com We request you to kindly take on record the same. Thanking You, Yours faithfully, For Himadri Speciality Chemical Ltd Monika Saraswat Company Secretary & Compliance Officer ACS: 29322 Press Release Himadri Speciality Chemical Increases Stake in International Battery Company to 20.47%, Reinforcing Commitment to Advanced Battery Technologies Kolkata, India | June 19, 2026: Himadri Speciality Chemical Ltd (Himadri), a global leader in speciality chemicals and advanced carbon materials, has further strengthened its strategic partnership with International Battery Company, Inc. (IBC), a U.S. headquartered technology developer and manufacturer of chemistry-agnostic prismatic Lithium-ion (Li-ion) cells, through an additional investment of USD 0.66 million. Prior to this investment, Himadri had invested an aggregate of USD 5.43 million in IBC and held a 17.29% stake on a fully diluted basis. With the latest investment, Himadri's aggregated stake has increased to 20.47% on a fully diluted basis, comprising both common and preferred stock. The increased investment reflects the meaningful progress achieved through the partnership over the past year and Himadri's continued confidence in IBC's technology platform, commercialization roadmap, and long-term growth potential. This partnership marks a significant milestone for Himadri, supporting the commercial deployment of its Lithium Iron Phosphate (LFP) Cathode Active Materials and advanced Anode Materials. Through this alliance, Himadri gains strategic access to IBC's advanced battery technology capabilities, its R&D centre in California, manufacturing facility in South Korea, and the upcoming Gigafactory in Bengaluru, India. The collaboration creates significant strategic value for both companies. For Himadri, the partnership strengthens its downstream integration within the battery value chain. By leveraging IBC's cutting-edge battery technology, AI-driven research capabilities, and established manufacturing infrastructure in South Korea, Himadri is able to fast-track the transition of its cathode and anode materials from laboratory development to real-world applications while IBC secures access to a reliable supply of high-quality cathode and anode materials that are critical to battery performance, safety, and cost competitiveness. IBC also benefits from Himadri's extensive expertise in materials science, supply chain management, manufacturing excellence, and global market reach. Commenting on the development, Mr. Anurag Choudhary, CMD & CEO, Himadri Speciality Chemical Ltd said: "The decision to increase our stake is backed by tangible progress achieved over the past year, including successful validation of our battery materials, advancement of next-generation cell development programs, and the creation of a clear pathway toward commercial deployment across mobility and energy storage applications. We see tremendous potential in combining Himadri's advanced materials expertise with IBC's battery technology and manufacturing capabilities. This collaboration not only supports the commercialization of our battery materials portfolio but also strengthens our position across the global battery value chain. As demand for high-performance and sustainable energy storage solutions continues to grow, we remain committed to investing in technologies and partnerships that create long-term value and accelerate the transition to clean energy." The strengthened collaboration is expected to accelerate the development and deployment of next-generation battery technologies. Together, Himadri and IBC are well-positioned to address the growing need for high-performance, scalable, and sustainable energy storage solutions across mobility, grid storage, and other emerging applications. About: Himadri Speciality Chemical Ltd Himadri Speciality Chemical Ltd is a global speciality solutions powerhouse that has evolved from its carbon chemistry roots into a science-led enterprise driven by innovation, application diversity, and resilient earnings. The company delivers high-performance, value-added solutions across a wide range of industries, including lithium-ion batteries, electric mobility, paints, plastics, tyres, technical rubber goods, aluminium, graphite electrodes, agrochemicals, defence, and construction chemicals, with its products trusted across 61 countries. Himadri's diversified portfolio includes advanced battery materials, tyres, speciality carbon black, coal tar pitch, refined naphthalene, SNF & PCE, speciality oils, and clean power solutions. As one of India's early pioneers in lithium-ion battery materials, the Company continues to strengthen its capabilities across the battery value chain through continuous research, technology development, and product innovation. At Himadri, the focus extends beyond manufacturing to designing customised solutions aligned with evolving customer and industry requirements. Backed by strong R&D capabilities and a customer-centric approach, Himadri's product-plus model has positioned itself as an integrated solutions partner, building enduring relationships across future-oriented industries globally. Sustainability remains central to Himadri's long-term strategy. The Company operates eight zero- liquid-discharge manufacturing facilities and meets 100% of its electrical energy requirements through in-house clean power generation. With a strong emphasis on operational excellence, technological sophistication, environmental responsibility, and human capital, Himadri continues to pursue transformative growth anchored in scale, scope, sophistication, and sustainability. ------------