Exhibit 99.1
Effective for the third quarter of 2026, M&T Bank Corporation will make certain changes and reclassifications to the presentation of its Consolidated Statement of Income, its Consolidated Balance Sheet and its Average Balance Sheet and Taxable-equivalent Rates disclosures. The following unaudited supplemental historical financial information reflects these changes and reclassifications, which have been applied retrospectively to all periods presented. This information is being provided for illustrative purposes only.

Unaudited Supplemental Historical Consolidated Statement of Income Information
Three Months Ended
June 30,March 31,December 31,September 30,June 30,March 31,
(Dollars in millions)202620262025202520252025
Interest income$2,620 $2,536 $2,637 $2,680 $2,609 $2,560 
Interest expense828 784 858 919 896 865 
Net interest income1,792 1,752 1,779 1,761 1,713 1,695 
Provision for credit losses120 140 125 125 125 130 
Net interest income after provision for credit losses1,672 1,612 1,654 1,636 1,588 1,565 
Other income:
Trust and investment services income235 219 220 217 216 210 
Mortgage banking revenues127 127 155 147 130 118 
Service charges on deposit accounts107 106 105 105 102 100 
Card revenues89 78 87 90 91 76 
Letter of credit and credit-related fees44 42 47 45 44 43 
Capital markets and advisory revenues41 36 31 35 33 21 
Gain (loss) on bank investment securities2 4 1 1 — — 
Other revenues from operations95 77 50 112 67 43 
Total other income740 689 696 752 683 611 
Other expense:
Salaries and employee benefits826 914 809 833 813 887 
Outside data processing and software154 144 146 138 138 136 
Equipment and net occupancy129 133 134 129 130 132 
Professional and other services89 93 105 81 86 84 
FDIC assessments18 23 (8)13 22 23 
Advertising and marketing27 21 32 23 25 22 
Amortization of core deposit and other intangible assets7 9 10 10 9 13 
Other costs of operations99 101 151 136 113 118 
Total other expense1,349 1,438 1,379 1,363 1,336 1,415 
Income before taxes1,063 863 971 1,025 935 761 
Income taxes245 199 212 233 219 177 
Net income$818 $664 $759 $792 $716 $584 









1
Exhibit 99.1
Unaudited Supplemental Historical Consolidated Statement of Income Information
Six Months EndedNine Months EndedYear Ended
June 30,June 30,September 30, December 31,  December 31,
(Dollars in millions)20262025202520252024
Interest income$5,156 $5,169 $7,849 $10,486 $11,026 
Interest expense1,612 1,761 2,680 3,538 4,174 
Net interest income3,544 3,408 5,169 6,948 6,852 
Provision for credit losses260 255 380 505 610 
Net interest income after provision for credit losses3,284 3,153 4,789 6,443 6,242 
Other income:
Trust and investment services income454 426 643 863 806 
Mortgage banking revenues254 248 395 550 436 
Service charges on deposit accounts213 202 307 412 375 
Card revenues167 167 257 344 331 
Letter of credit and credit-related fees86 87 132 179 164 
Capital markets and advisory revenues77 54 89 120 84 
Gain (loss) on bank investment securities6 — 1 2 10 
Other revenues from operations172 110 222 272 221 
Total other income1,429 1,294 2,046 2,742 2,427 
Other expense:
Salaries and employee benefits1,740 1,700 2,533 3,342 3,162 
Outside data processing and software298 274 412 558 492 
Equipment and net occupancy262 262 391 525 512 
Professional and other services182 170 251 356 344 
FDIC assessments41 45 58 50 146 
Advertising and marketing48 47 70 102 104 
Amortization of core deposit and other intangible assets16 22 32 42 53 
Other costs of operations200 231 367 518 546 
Total other expense2,787 2,751 4,114 5,493 5,359 
Income before taxes1,926 1,696 2,721 3,692 3,310 
Income taxes444 396 629 841 722 
Net income$1,482 $1,300 $2,092 $2,851 $2,588 









2
Exhibit 99.1
Unaudited Supplemental Historical Other Revenues from Operations
Three Months Ended
June 30,March 31,December 31,September 30,June 30,March 31,
(Dollars in millions)202620262025202520252025
Bank owned life insurance revenue$20 $18 $19 $21 $17 $18 
Equipment operating lease income11 11 11 12 14 11 
BLG income47 33 — 20 — — 
Earnout payment related to 2023 sale of Collective Investment Trust business— — — 28 — — 
Gain on sale of out-of-footprint loan portfolio— — — — 15 — 
Gain on sale of institutional services subsidiary— — — — 10 — 
Other17 15 20 31 11 14 
Total other revenues from operations$95 $77 $50 $112 $67 $43 
Six Months EndedNine Months EndedYear Ended
June 30,June 30,September 30,December 31,December 31,
(Dollars in millions)20262025202520252024
Bank owned life insurance revenue$38 $35 $56 $75 $65 
Equipment operating lease income22 25 37 48 44 
BLG income80 — 20 20 48 
Earnout payment related to 2023 sale of Collective Investment Trust business— — 28 28 — 
Gain on sale of out-of-footprint loan portfolio— 15 15 15 — 
Gain on sale of institutional services subsidiary— 10 10 10 — 
Other32 25 56 76 64 
Total other revenues from operations$172 $110 $222 $272 $221 
3
Exhibit 99.1
Unaudited Supplemental Historical Consolidated Balance Sheet Information
June 30,March 31,December 31,September 30,June 30,March 31,December 31,
(Dollars in millions)2026202620252025202520252024
ASSETS
Cash and due from banks$1,939 $1,903 $1,701 $1,950 $2,128 $2,109 $1,909 
Interest-bearing deposits at banks15,499 14,445 17,068 16,751 19,297 20,656 18,873 
Investment securities38,374 38,621 36,649 36,864 35,568 35,137 34,051 
Loans held for sale663 861 1,067 629 625 1,140 566 
Loans:
Commercial and industrial65,995 65,216 63,406 61,863 61,642 60,520 61,436 
Real estate - commercial24,233 22,986 23,335 23,768 24,182 24,982 26,454 
Real estate - residential25,128 24,530 24,433 24,335 23,895 23,105 22,955 
Consumer27,174 26,321 26,461 26,379 25,772 24,827 24,170 
Total loans
142,530 139,053 137,635 136,345 135,491 133,434 135,015 
Allowance for loan losses(2,176)(2,136)(2,116)(2,161)(2,197)(2,200)(2,184)
Net loans140,354 136,917 135,519 134,184 133,294 131,234 132,831 
Goodwill8,465 8,465 8,465 8,465 8,465 8,465 8,465 
Core deposit and other intangible assets48 55 64 74 84 93 94 
Other assets13,919 13,469 12,977 12,360 12,123 11,487 11,316 
Total assets$219,261 $214,736 $213,510 $211,277 $211,584 $210,321 $208,105 
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing deposits$48,295 $45,892 $46,509 $44,994 $47,485 $49,051 $46,020 
Interest-bearing deposits120,590 117,849 120,400 118,432 116,968 116,358 115,075 
Total deposits168,885 163,741 166,909 163,426 164,453 165,409 161,095 
Short-term borrowings4,614 7,851 2,149 2,059 2,071 1,573 1,060 
Long-term borrowings13,568 11,175 10,911 12,928 12,380 10,496 12,605 
Accrued interest and other liabilities4,248 3,997 4,364 4,136 4,155 3,852 4,318 
Total liabilities191,315 186,764 184,333 182,549 183,059 181,330 179,078 
Shareholders' equity:
Preferred2,434 2,434 2,834 2,394 2,394 2,394 2,394 
Common25,512 25,538 26,343 26,334 26,131 26,597 26,633 
Total shareholders' equity27,946 27,972 29,177 28,728 28,525 28,991 29,027 
Total liabilities and shareholders' equity$219,261 $214,736 $213,510 $211,277 $211,584 $210,321 $208,105 
LOAN RATIOS
Allowance for loan losses to total loans1.53 %1.54 %1.54 %1.59 %1.62 %1.65 %1.62 %
Nonaccrual loans to total loans.85 .89 .91 1.11 1.16 1.15 1.25 


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Exhibit 99.1
In conjunction with the implementation of a new general ledger platform during the second quarter of 2026, the Company modified its methodology for calculating annualized taxable-equivalent rates for certain earning assets and interest-bearing liabilities, including certain average deposit balances. Previously reported amounts have been adjusted to conform to the current presentation.
Unaudited Supplemental Historical Average Balance Sheet and Taxable-equivalent Rates Information
Three Months Ended
June 30,March 31,December 31,September 30,June 30,March 31,
202620262025202520252025
(Dollars in millions)BalanceRateBalanceRateBalanceRateBalanceRateBalanceRateBalanceRate
ASSETS
Interest-bearing deposits at banks$15,061 3.72 %$16,231 3.71 %$17,964 3.98 %$17,739 4.43 %$19,698 4.47 %$19,695 4.48 %
Investment securities 38,728 4.29 37,845 4.22 36,705 4.19 36,559 4.15 35,335 3.80 34,480 3.97 
Loans held for sale777 5.50 1,002 5.39 1,058 5.52 637 5.85 1,096 8.12 505 5.69 
Loans:
Commercial and industrial65,883 6.00 63,622 6.00 62,190 6.22 61,687 6.45 60,991 6.40 61,018 6.36 
Real estate - commercial 23,221 6.29 23,025 6.14 23,507 6.32 23,982 6.45 24,473 6.32 25,966 6.26 
Real estate - residential24,827 4.63 24,468 4.54 24,368 4.57 24,122 4.57 23,493 4.50 23,003 4.43 
Consumer26,719 6.46 26,306 6.48 26,477 6.58 26,099 6.60 25,354 6.57 24,352 6.57 
Total loans 140,650 5.89 137,421 5.85 136,542 6.01 135,890 6.15 134,311 6.09 134,339 6.05 
Other — — 95 3.49 97 3.40 95 3.45 95 3.47 97 3.47 
Total earning assets 195,216 5.40 192,594 5.35 192,366 5.47 190,920 5.60 190,535 5.51 189,116 5.50 
Goodwill8,465 8,465 8,465 8,465 8,465 8,465 
Core deposit and other intangible assets51 59 69 79 89 92 
Other assets12,800 12,710 11,991 11,589 11,172 10,648 
Total assets$216,532 $213,828 $212,891 $211,053 $210,261 $208,321 
LIABILITIES AND SHAREHOLDERS' EQUITY
Interest-bearing deposits:
Savings and interest-checking deposits $105,752 1.81 %$106,570 1.84 %$107,257 2.04 %$104,630 2.23 %$103,934 2.24 %$101,536 2.20 %
Time deposits 13,808 3.02 13,059 3.02 13,499 3.20 13,890 3.40 14,171 3.48 14,107 3.57 
Total interest-bearing deposits 119,560 1.95 119,629 1.97 120,756 2.17 118,520 2.36 118,105 2.39 115,643 2.37 
Short-term borrowings8,016 3.86 5,695 3.86 2,064 4.21 2,844 4.50 3,327 4.49 2,869 4.52 
Long-term borrowings 12,778 5.33 11,064 5.41 12,555 5.56 12,789 5.64 10,936 5.70 11,285 5.58 
Total interest-bearing liabilities 140,354 2.36 136,388 2.32 135,375 2.52 134,153 2.72 132,368 2.71 129,797 2.70 
Noninterest-bearing deposits43,964 44,547 44,184 44,056 45,153 45,436 
Other liabilities 4,275 4,245 4,362 4,261 4,074 4,090 
Total liabilities188,593 185,180 183,921 182,470 181,595 179,323 
Shareholders' equity27,939 28,648 28,970 28,583 28,666 28,998 
Total liabilities and shareholders' equity$216,532 $213,828 $212,891 $211,053 $210,261 $208,321 
Net interest spread 3.04 3.03 2.95 2.88 2.80 2.80 
Contribution of interest-free funds .66 .67 .75 .81 .82 .85 
Net interest margin 3.70 %3.70 %3.70 %3.69 %3.62 %3.65 %





5
Exhibit 99.1




Unaudited Supplemental Historical Average Balance Sheet and Taxable-equivalent Rates Information
Six Months EndedNine Months EndedYear Ended
June 30,June 30,September 30,December 31,
20262025202520252024
(Dollars in millions)BalanceRateBalanceRateBalanceRateBalanceRateBalanceRate
ASSETS
Interest-bearing deposits at banks$15,642 3.72 %$19,697 4.48 %$19,037 4.46 %$18,767 4.35 %$27,244 5.33 %
Investment securities38,289 4.25 34,909 3.88 35,466 3.98 35,778 4.03 30,755 3.64 
Loans held for sale888 5.44 805 7.38 750 6.92 828 6.47 637 6.05 
Loans:
Commercial and industrial64,759 6.00 61,004 6.38 61,234 6.41 61,475 6.36 58,821 6.89 
Real estate - commercial23,124 6.21 25,213 6.29 24,796 6.34 24,471 6.34 29,885 6.43 
Real estate - residential24,648 4.59 23,249 4.46 23,543 4.50 23,751 4.52 22,855 4.34 
Consumer26,514 6.47 24,856 6.57 25,275 6.58 25,578 6.58 22,519 6.63 
Total loans 139,045 5.87 134,322 6.07 134,848 6.09 135,275 6.07 134,080 6.31 
Other 47 — 96 3.47 96 3.46 96 3.45 102 3.42 
Total earning assets193,911 5.38 189,829 5.51 190,197 5.54 190,744 5.52 192,818 5.74 
Goodwill8,465 8,465 8,465 8,465 8,465 
Core deposit and other intangible assets55 90 86 82 120 
Other assets12,755 10,912 11,141 11,354 9,817 
Total assets$215,186 $209,296 $209,889 $210,645 $211,220 
LIABILITIES AND SHAREHOLDERS' EQUITY
Interest-bearing deposits:
Savings and interest-checking deposits $106,159 1.82 %$102,741 2.22 %$103,378 2.22 %$104,356 2.18 %$97,788 2.57 %
Time deposits 13,435 3.02 14,140 3.52 14,056 3.48 13,915 3.41 18,126 4.31 
Total interest-bearing deposits 119,594 1.96 116,881 2.38 117,434 2.37 118,271 2.32 115,914 2.84 
Short-term borrowings6,862 3.86 3,100 4.51 3,013 4.50 2,774 4.45 4,440 5.45 
Long-term borrowings 11,926 5.37 11,109 5.64 11,675 5.64 11,897 5.61 11,083 5.76 
Total interest-bearing liabilities 138,382 2.35 131,090 2.70 132,122 2.71 132,942 2.66 131,437 3.17 
Noninterest-bearing deposits44,254 45,294 44,877 44,702 47,260 
Other liabilities 4,259 4,081 4,142 4,197 4,471 
Total liabilities186,895 180,465 181,141 181,841 183,168 
Shareholders' equity28,291 28,831 28,748 28,804 28,052 
Total liabilities and shareholders' equity$215,186 $209,296 $209,889 $210,645 $211,220 
Net interest spread3.03 2.81 2.83 2.86 2.57 
Contribution of interest-free funds .67 .83 .82 .81 1.01 
Net interest margin 3.70 %3.64 %3.65 %3.67 %3.58 %

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