| COMMUNITY FINANCIAL SYSTEM, INC. (CBU) |
| Q1-CY2026 | Q4-CY2025 | Q3-CY2025 | Q2-CY2025 | Q1-CY2025 | Q4-CY2024 | Q3-CY2024 | Q2-CY2024 | Q1-CY2024 | Q4-CY2023 | Q3-CY2023 | Q2-CY2023 | Q1-CY2023 | Q4-CY2022 | Q3-CY2022 | Q2-CY2022 | Q1-CY2022 | Q4-CY2021 | Q3-CY2021 | Q2-CY2021 | Q1-CY2021 | Q4-CY2020 | Q3-CY2020 | Q2-CY2020 | Q1-CY2020 | Q4-CY2019 | Q3-CY2019 | Q2-CY2019 | Q1-CY2019 | Q4-CY2018 | Q3-CY2018 | Q2-CY2018 | Q1-CY2018 | Q4-CY2017 | Q3-CY2017 | Q2-CY2017 | Q1-CY2017 | Q4-CY2016 | Q3-CY2016 | Q2-CY2016 | Q1-CY2016 | Q4-CY2015 | Q3-CY2015 | Q2-CY2015 | Q1-CY2015 | Q4-CY2014 | Q3-CY2014 | Q2-CY2014 | Q1-CY2014 |
| Balance Sheet Date | | 2025-Dec-31 | 2025-Sep-30 | 2025-Jun-30 | 2025-Mar-31 | 2024-Dec-31 | 2024-Sep-30 | 2024-Jun-30 | 2024-Mar-31 | 2023-Dec-31 | 2023-Sep-30 | 2023-Jun-30 | 2023-Mar-31 | 2022-Dec-31 | 2022-Sep-30 | 2022-Jun-30 | 2022-Mar-31 | 2021-Dec-31 | 2021-Sep-30 | 2021-Jun-30 | 2021-Mar-31 | 2020-Dec-31 | 2020-Sep-30 | 2020-Jun-30 | 2020-Mar-31 | 2019-Dec-31 | 2019-Sep-30 | 2019-Jun-30 | 2019-Mar-31 | 2018-Dec-31 | 2018-Sep-30 | 2018-Jun-30 | 2018-Mar-31 | 2017-Dec-31 | 2017-Sep-30 | 2017-Jun-30 | 2017-Mar-31 | 2016-Dec-31 | 2016-Sep-30 | 2016-Jun-30 | 2016-Mar-31 | 2015-Dec-31 | 2015-Sep-30 | 2015-Jun-30 | 2015-Mar-31 | 2014-Dec-31 | 2014-Sep-30 | 2014-Jun-30 | 2014-Mar-31 |
| Fiscal Period | | Q4-FY2025 | Q3-FY2025 | Q2-FY2025 | Q1-FY2025 | Q4-FY2024 | Q3-FY2024 | Q2-FY2024 | Q1-FY2024 | Q4-FY2023 | Q3-FY2023 | Q2-FY2023 | Q1-FY2023 | Q4-FY2022 | Q3-FY2022 | Q2-FY2022 | Q1-FY2022 | Q4-FY2021 | Q3-FY2021 | Q2-FY2021 | Q1-FY2021 | Q4-FY2020 | Q3-FY2020 | Q2-FY2020 | Q1-FY2020 | Q4-FY2019 | Q3-FY2019 | Q2-FY2019 | Q1-FY2019 | Q4-FY2018 | Q3-FY2018 | Q2-FY2018 | Q1-FY2018 | Q4-FY2017 | Q3-FY2017 | Q2-FY2017 | Q1-FY2017 | Q4-FY2016 | Q3-FY2016 | Q2-FY2016 | Q1-FY2016 | Q4-FY2015 | Q3-FY2015 | Q2-FY2015 | Q1-FY2015 | Q4-FY2014 | Q3-FY2014 | Q2-FY2014 | Q1-FY2014 |
| Close Price of Common Stock | 60.46$ | 57.41$ | 58.66$ | 56.82$ | 56.84$ | 61.84$ | 58.06$ | 47.21$ | 47.97$ | 52.14$ | 42.25$ | 46.88$ | 52.43$ | 62.84$ | 60.01$ | 63.20$ | 70.10$ | 74.50$ | 68.54$ | 75.68$ | 76.75$ | 62.45$ | 54.50$ | 57.10$ | 58.55$ | 70.96$ | 61.69$ | 65.77$ | 59.77$ | 58.28$ | 60.98$ | 59.16$ | 53.62$ | 53.78$ | 55.24$ | | | | | | | | | | | | | | |
| Market Cap of Common Stock | 3,187,688,868$ | 3,023,296,083$ | 3,100,596,137$ | 3,003,019,559$ | 2,995,904,935$ | 3,250,325,551$ | 3,050,687,396$ | 2,491,062,419$ | 2,558,169,776$ | 2,783,523,359$ | 2,261,507,807$ | 2,518,536,844$ | 2,819,347,541$ | 3,376,669,507$ | 3,224,458,280$ | 3,406,837,205$ | 3,775,901,450$ | 4,017,863,523$ | 3,695,543,969$ | 4,077,885,041$ | 4,119,294,398$ | 3,343,677,229$ | 2,917,363,582$ | 2,974,621,302$ | 3,039,574,946$ | 3,668,500,509$ | 3,182,648,123$ | 3,389,065,224$ | 3,067,020,569$ | 2,982,888,684$ | 3,116,549,071$ | 3,015,659,702$ | 2,723,686,346$ | 2,721,760,033$ | 2,792,107,071$ | | | | | | | | | | | | | | |
| QoQ% | 5.44% | (2.49%) | 3.25% | .24% | (7.83%) | 6.54% | 22.47% | (2.62%) | (8.10%) | 23.08% | (10.21%) | (10.67%) | (16.51%) | 4.72% | (5.35%) | (9.77%) | (6.02%) | 8.72% | (9.38%) | (1.01%) | 23.20% | 14.61% | (1.93%) | (2.14%) | (17.14%) | 15.27% | (6.09%) | 10.50% | 2.82% | (4.29%) | 3.35% | 10.72% | .07% | (2.52%) | | | | | | | | | | | | | | | |
| YoY% | 6.40% | (6.99%) | 1.64% | 20.55% | 17.11% | 16.77% | 34.90% | (1.09%) | (9.26%) | (17.57%) | (29.86%) | (26.07%) | (25.33%) | (15.96%) | (12.75%) | (16.46%) | (8.34%) | 20.16% | 26.67% | 37.09% | 35.52% | (8.85%) | (8.34%) | (12.23%) | (.90%) | 22.99% | 2.12% | 12.38% | 12.61% | 9.59% | 11.62% | | | | | | | | | | | | | | | | | | |
| Close Price of Warrant | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Close Price of Unit | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Close Price of Right | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Common Shares Outstanding | 52,723,931 | 52,682,217 | 52,661,580 | 52,869,425 | 52,836,307 | 52,667,836 | 52,545,891 | 52,522,803 | 52,764,561 | 53,327,060 | 53,426,989 | 53,528,090 | 53,724,917 | 53,737,249 | 53,736,016 | 53,734,027 | 53,913,362 | 53,878,047 | 53,925,987 | 53,918,695 | 53,675,085 | 53,593,127 | 53,529,607 | 52,094,944 | 51,914,175 | 51,701,790 | 51,595,171 | 51,529,044 | 51,318,005 | 51,186,421 | 51,136,676 | 51,085,874 | 50,883,603 | 50,696,077 | 50,587,128 | 50,511,935 | 45,955,882 | 44,437,415 | 44,357,396 | 44,178,695 | 44,069,779 | 43,774,860 | 41,019,023 | 40,876,606 | 40,724,275 | 40,747,721 | 40,707,285 | 40,687,950 | 40,658,373 |
| QoQ% | .08% | .04% | (.39%) | .06% | .32% | .23% | .04% | (.46%) | (1.06%) | (.19%) | (.19%) | (.37%) | (.02%) | .00% | .00% | (.33%) | .07% | (.09%) | .01% | .45% | .15% | .12% | 2.75% | .35% | .41% | .21% | .13% | .41% | .26% | .10% | .10% | .40% | .37% | .22% | .15% | 9.91% | 3.42% | .18% | .40% | .25% | .67% | 6.72% | .35% | .37% | (.06%) | .10% | .05% | .07% | .56% |
| YoY% | (.21%) | .03% | .22% | .66% | .14% | (1.24%) | (1.65%) | (1.88%) | (1.79%) | (.76%) | (.58%) | (.38%) | (.35%) | (.26%) | (.35%) | (.34%) | .44% | .53% | .74% | 3.50% | 3.39% | 3.66% | 3.75% | 1.10% | 1.16% | 1.01% | .90% | .87% | .85% | .97% | 1.09% | 1.14% | 10.72% | 14.08% | 14.04% | 14.34% | 4.28% | 1.51% | 8.14% | 8.08% | 8.22% | 7.43% | .77% | .46% | .16% | .78% | 1.02% | 1.47% | 1.67% |