Certificate on Interest Payment on Series III Bonds INE565A08035

Ref No. IRC/136/2026-27 24.09.2026 The General Manager, The Vice President, Department of Corporate Services, National Stock Exchange Ltd., BSE Limited, Exchange Plaza, C-1 Block G, Floor 1, P.J. Towers, Dalal Street, Bandra-Kurla Complex, Bandra (E), Mumbai 400 001 Mumbai – 400 051 BSE SCRIP CODE: 532388 NSE SCRIP CODE: IOB Madam / Sir, Annual Interest Payment on Basel III Tier II Bonds - Series III/INE565A08035 Pursuant to Regulation 57 of the SEBI (Listing Obligations and Disclosure Requirements), Regulations, 2015 as amended up to date, we wish to inform you that the Bank has paid annual interest today i.e., 24.09.2026 due on BASEL III Tier- II Bonds Series III (INE565A08035). a) Whether Interest Payment / Redemption Payment made: Yes, Interest Payment made. b) Details of Interest Payments: No. Particulars Details 1 ISIN INE565A08035 2 Issue Size ₹500 Crore 3 Interest Amount to be paid on Due Date ₹45,40,10,000/- 4 Frequency – Quarterly / Monthly Annual 5 Change in Frequency of Payment (if any) Not Applicable 6 Details of such change Not Applicable 7 Interest Payment Record Date 09.09.2026 8 Due Date for Interest Payment 24.09.2026 9 Actual Date of Interest Paid 24.09.2026 10 Amount of Interest Paid ₹45,40,10,000/- 11 Date of Last Interest Payment 24.09.2025 12 Reason for Non-Payment / Delay in Payment Not Applicable c) Details of Redemption Payment: Not applicable, as this is only Interest Payment. This is for your information and appropriate dissemination Yours faithfully, Raghuram Mallela Deputy General Manager/ Company Secretary & Compliance Officer 044 – 7172 9791, 2888 9360 | investor@iob.bank.in