Certificate under SEBI (Depositories and Participants) Regulations, 2018

October 12, 2026 National Stock Exchange of India Limited BSE Limited Exchange Plaza, 5th Floor Phiroze Jeejeebhoy Towers, Plot No.C/1, G-Block Dalal Street Mumbai – Bandra-Kurla Complex 400001, Maharashtra, India Bandra (E) MUMBAI – 400051, India Scrip Code: MSUMI Scrip Code: 543498 Subject: Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 in respect of Equity Shares of the Company for the second quarter ended September 30, 2026 Dear Sir/ Madam, Please find enclosed herewith a confirmation certificate issued under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018, by KFin Technologies Limited (formerly known as “KFin Technologies Private Limited”), the Registrar and Share Transfer Agent of the Company, in respect of Equity Shares of the Company for the period from July 1, 2026 to September 30, 2026. The above is for your information and records. Thanking You, Yours truly For Motherson Sumi Wiring India Limited Pooja Mehra Company Secretary 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 R: KFIN2026/MSUM/74(5) Q2/Certificate October12,2026 THE COMPANY SECRETARY MOTHERSON SUMI WIRING INDIA LIMITED UNIT NO. 705 C WING ONE BKC, G BLOCK BANDRA KURLA COMPLEX, BANDRA EAST MUMBAI 400051 Subject: Confirmation Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Dear Sirs/Madam, With reference to the above captioned Regulations, we hereby confirm that during the period 1stJuly, 2026 to 30thSeptember,2026, we have within 15 days from date of receipt of the certificates from the depository participants for dematerialization; Confirmed (approved/rejected) Dematrequests; Confirmed to the depositories that securities comprised in the said certificates have been listed on the stock exchanges where the earlier issued securities are listed; Immediately mutilated and cancelled the said security certificates after due verification and Name of the depositories have been substituted in register of members as the registered owner, in case of Demat requests which are approved. Further, we have been certifying the same to the depositories and Stock Exchanges in accordance with Regulations. We request you to kindly take note of the above. Thanking you, For KFIN TECHNOLOGIES LIMITED S R RAMESH DVP, Corporate Registry