Tamilnad Mercantile Bank Limited has informed the Exchange regarding the Trading Window closure pursuant to SEBI (Prohibition of Insider Trading) Regulations, 2015

Secretarial Section Head Office, 57- V.E. Road, Thoothukudi – 628 002. ☏: 0461-2325136 e-mail : secretarial@tmb.bank.in CIN: L65110TN1921PLC001908 Ref.No.TMB.SE.70/2026-27 22.09.2026 The Manager The Manager National Stock Exchange of India Ltd, BSE limited, Exchange Plaza, 5th Floor, Plot No. C/1, Phiroze Jeejeebhoy Towers, 'G' Block, Bandra - Kurla Complex, Dalal Street, Bandra (East), Mumbai - 400 051. Mumbai – 400 001. Ref: Symbol: TMB / Scrip Code: 543596 Dear Sir/Madam, Sub: Intimation pursuant to Bank’s Code of Conduct for Prohibition of Insider Trading – Closure of Trading Window Pursuant to Bank's Code of Conduct for Prevention of Insider Trading read with Securities and Exchange Board of India (Prohibition of Insider Trading) Regulations, 2015, and any amendments thereto, the Trading Window for dealing in equity shares of the Bank shall remain closed for the designated persons and their relatives defined under the 'Code of Conduct' from Thursday, October 01, 2026, till 48 hours after announcement / declaration of the Unaudited Financial Results of the Bank for the quarter and half year ending September 30, 2026. The date of the Board Meeting to consider and approve the said results will be intimated in due course. Kindly take the same on record. Yours faithfully, For Tamilnad Mercantile Bank Limited Swapnil Yelgaonkar Company Secretary and Compliance Officer