Tamilnad Mercantile Bank Limited has informed the Exchange regarding ''Change in Email Domain of the Bank''.

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.52/2026-27 21.07.2026 The Manager The Manager National Stock Exchange of India Limited, 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: Change in Email Domain of the Bank Pursuant to Regulation 46 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 and other relevant provisions, we wish to inform that the Bank is transiting to a new email domain as per RBI guidelines. Our previous email domain will be replaced with new email domain as mentioned below. However, our old email domain will remain active for a period of 30 days for receiving emails. Existing Email Domain New Email Domain @tmbank.in @tmb.bank.in Kindly take the information on record. Yours faithfully, For Tamilnad Mercantile Bank Limited Swapnil Yelgaonkar Company Secretary & Compliance Officer