Press Release

October 30, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor Phiroze Jeejebhoy Towers, Plot No. C/1, G-Block Dalal Street Bandra-Kurla Complex MUMBAI – 400001, Bandra (E) Maharashtra, India MUMBAI – 400051, India Scrip Code : MSUMI Scrip Code : 543498 Subject: Un-audited Financial Results for the second quarter and half year ended September 30, 2026 -Investor Presentation and Press Release Dear Sir/ Madam, Further to our letter dated October 30, 2026 intimating about approval of the un-audited Financial Results of the Company for the second quarter and half year ended September 30, 2026 in the Board Meeting held on Friday, October 30, 2026, please find enclosed the following: 1. Presentation on the performance of the Company for the second quarter and half year ended September 30, 2026; and 2. Copy of the Press Release on the performance issued by the Company. The above is for your information and records. Thanking You, Yours truly For Motherson Sumi Wiring India Limited Digitally signed POOJA by POOJA MEHRA MEHRADate: 2026.10.30 16:38:17 +05'30' Pooja Mehra Company Secretary Encl(s): As above Regd. Office: Motherson Sumi Wiring India Limited Unit – 705, C Wing, ONE BKC, G Block Bandra Kurla Complex, Bandra East Mumbai – 400051, Maharashtra (India) Tel: 022-61354800, Fax: 022-61354801 CIN No.: L29306MH2020PLC341326 E-mail: investorrelations@mswil.motherson.com website: www.mswil.motherson.com Motherson Sumi Wiring India Ltd. reports strong Q2FY27 growth, supported by higher customer volumes and increasing content per vehicle. Quarterly revenue rises 47% YoY to ₹4,054 crore. Noida, Uttar Pradesh – 30th Oct 2026 – Motherson Sumi Wiring India Limited (MSWIL) announced its financial results for the fiscal year 2026-27, second quarter, which ended on 30th Sep 2026. Mr Vivek Chaand Sehgal, Chairman, Motherson Sumi Wiring India Ltd., said, “Our resilient performance reflects the continued trust of our customers and strength of our executional capabilities. The growth in the business has been supported by higher customer volumes, increasing content per vehicle and our participation in new model launches across both EV and ICE platforms. At the same time, our teams continue to focus on operational efficiencies and financial discipline while navigating elevated commodity costs. We remain grateful to our customers for their continued support and to our people for their dedication. We will continue to focus on creating sustainable, long-term value for all our stakeholders.” Key Highlights • Robust growth of ~47% YoY and 19% QoQ reflected continued customer trust. • Premiumization-led higher content per vehicle and new EV/ICE model wins continues to be the key growth driver. • Timely expansion and ramp-up of Greenfields projects helped to support higher customer volumes. • Performance remained resilient amidst headwinds from higher copper prices and other cost inflationary pressure. • Consistent focus on financial prudence, with disciplined working capital management. Financial Performance Motherson Sumi Wiring India Limited (MSWIL) Motherson Sumi Wiring India Limited (MSWIL) is a leading and fast-growing full-system solutions provider to OEMs in the wiring harness segment in India. Motherson Sumi Wiring India is a joint venture between Samvardhana Motherson International Limited (SAMIL) and Sumitomo Wiring Systems, Ltd. (SWS). The company has the capabilities to meet customer needs at every stage of the supply chain, from initial product design to final production of integrated, cutting- edge Electrical & Electronic Distribution Systems for power supply or data transfer across vehicles, in support of current and future automotive trends. (CIN - L29306MH2020PLC341326). For more information, please visit www.mswil.motherson.com. For any media queries on Motherson Sumi Wiring India Limited MSWIL), please contact: Anurag Gahlot Gulshan Pahuja COO CFO Motherson Sumi Wiring India Limited (MSWIL) Motherson Sumi Wiring India Limited (MSWIL) Rahul Deep Mugdha Srivastava Head – Global Communications, Motherson Group Global Stregteigoc Communications, Motherson Group Phone: +91 99100 85201 Phone: +91 87439 04021 Rahul.deep@motherson.com mugdha.srivastava@motherson.com