Intimation of closure of trading window

Sundram Fasteners Limited REGISTERED & CORPORATE OFFICE 98.A, VII FLOOR DR. RADHAKRISHNAN SALAI, MYLAPORE. CHENNAI - 600 004, INDIA TELEPHONE , +91 - 44 . 28478500 Email: investorshelpdesk@sfl.co.in PAN : AAACS8779D CIN : L35999TN1962PLC004943 WEBSITE : www.sundram.com July 28, 2026 National Stock Exchange of India Limited By NEAPS Symbol - SUNDRMFAST Exchange Plaza, 5th Floor, Plot No. C/1, G Block, Bandra-Kurla Complex Bandra (East), Mumbai - 400 051 BSE Limited By Listing Centre Scrip Code - 500403 Phiroze Jeejeebhoy Towers DalaI Street, Mumbai - 400 001 Dear Sir / Madam, Sub: Prior intimation reqardinq Board Meetinq & Closure of Trading Window Pursuant to Regulation 29 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that a meeting of the Board of Directors of the Company will be held on Tuesday, August 4, 2026, inter-alia, to consider, review and approve the unaudited financial results for the first quarter ended June 30, 2026. As informed earlier vide our letter dated June 29, 2026, the trading window for dealing in the securities of the Company by the Designated Persons, shall remain closed till 48 hours (two working days) after the declaration of unaudited financial results i.e. from June 30, 2026 (Tuesday) to August 6, 2026 (Thursday) (both days inclusive) , as per the Code of Conduct for Designated Persons of the Company framed under the Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015. Thanking you, Yours truly, For Sundram Fasteners Limited G Anand Babu Senior Manager-Finance & Company Secretary