0000036270 2023-05-12 2023-05-12 0000036270 us-gaap:CommonStockMember 2023-05-12 2023-05-12 0000036270 us-gaap:SeriesHPreferredStockMember 2023-05-12 2023-05-12 M&T BANK CORP true 0000036270 8-K/A 2023-05-12 NY 1-9861 16-0968385 One M&T Plaza Buffalo NY 14203 (716) 635-4000 false false false false Common Stock, $.50 par value MTB NYSE Perpetual Fixed-to-Floating Rate Non-Cumulative Preferred Stock, Series H MTBPrH NYSE false This Amendment No. 1 to M&T Bank Corporation’s Current Report on Form 8-K filed on May 17, 2023 (the “Original Form 8-K”) supplements the Original Form 8-K to provide information required to be disclosed pursuant to Item 5.02(c)(3) that had not been determined at the time of the filing of the Original Form 8-K, as provided by Instruction 2 to Item 5.02. No other changes have been made to the Original Form 8-K.