| Event Date | Historical Event |
| 1998-04-17 | NIAGARA BANCORP, INC. located at 6950 SOUTH TRANSIT ROAD, P.O. BOX 514, LOCKPORT, NY was established as a Bank Holding Company. |
| 2000-05-16 | NIAGARA BANCORP, INC. was renamed to FIRST NIAGARA FINANCIAL GROUP, INC.. |
| 2002-11-09 | FIRST NIAGARA FINANCIAL GROUP, INC. changed from Bank Holding Company to Domestic Entity Other. |
| 2003-01-17 | FIRST NIAGARA FINANCIAL GROUP, INC. moved to 6950 SOUTH TRANSIT ROAD LOCKPORT, NY and changed from Domestic Entity Other to Savings & Loan Holding Company. |
| 2010-04-10 | FIRST NIAGARA FINANCIAL GROUP, INC. moved to 726 EXCHANGE STREET, SUITE 618 BUFFALO, NY and changed from Savings & Loan Holding Company to Bank Holding Company. |