Key Highlights

  • NBT Bancorp reported record third quarter net income of USD 58.0 million, or USD 1.11 per diluted common share.
  • Results compare with USD 54.5 million, or USD 1.03 per diluted share, in the third quarter of 2025.
  • Total revenues grew 4.5% during the quarter, supported by net interest margin expansion.
  • Net interest margin on a fully taxable equivalent basis was 3.78%, an increase of 5 basis points.

Record Net Income Driven by Margin Expansion

NBT Bancorp Inc (NASDAQ:NBTB) reported record third quarter net income of USD 58.0 million, or USD 1.11 per diluted common share, compared with USD 54.5 million, or USD 1.03 per diluted share, in the third quarter of 2025, and USD 53.0 million, or USD 1.02 per diluted share, in the second quarter of 2026. Operating diluted earnings per share, a non-GAAP measure, was also USD 1.11 for the quarter, compared with USD 1.05 a year earlier.

Total revenues grew 4.5% during the quarter, with net interest margin on a fully taxable equivalent basis reaching 3.78%, an increase of 5 basis points from the prior period. This combination of revenue growth and margin expansion drove the quarter's record profitability.

Noninterest Income Contributes to Revenue Mix

Noninterest income was USD 52.9 million for the quarter, representing 27% of total revenues excluding net securities gains. This diversified revenue contribution, alongside net interest income growth, supported the company's overall revenue growth rate for the period.

The consistency between GAAP diluted earnings per share and operating diluted earnings per share, both at USD 1.11 for the quarter, indicates that the quarter's results were largely free of one-time adjustments that might otherwise create a gap between the two measures.

Capital Return and Balance Sheet Position

The company declared a cash dividend alongside its record quarterly results, continuing its pattern of regular capital returns to shareholders. Management cited solid loan growth and continued net interest margin expansion as key drivers supporting the quarter's performance, alongside what the company described as strong capital levels maintained throughout the period.

Continued net interest margin expansion at the pace seen this quarter could support further record results, while the diversified contribution from noninterest income, at 27% of total revenues, provides a buffer against potential net interest margin compression in a changing rate environment.

Revenue and Margin Metrics to Track

Net interest margin trends relative to the 3.78% reported this quarter, continued loan growth supporting the company's revenue base, and noninterest income relative to the 27% share of total revenues this period are among the items the company has flagged for investors. The gap, or lack thereof, between GAAP and operating diluted earnings per share remains a reference point for assessing earnings quality going forward.

Sequential earnings per share growth, from USD 1.02 in the second quarter to USD 1.11 in the third quarter, is another trend worth tracking relative to typical seasonal patterns in the bank's upstate New York and New England markets, alongside continued deposit cost trends that could affect the pace of further margin gains.