BANNER CORP

Banner is a bank holding company registered with the Federal Reserve. Bank holding companies are subject to capital adequacy requirements of the Federal Reserve under the Bank Holding Company Act of 1956, as amended, and the regulations of the Federal Reserve. The Bank, as a state-chartered, federally insured commercial bank, is subject to the capital requirements established by the FDIC.

The capital adequacy requirements are quantitative measures established by regulation that require Banner and the Bank to maintain minimum amounts and ratios of capital. The Federal Reserve requires Banner to maintain capital adequacy that generally parallels the FDIC requirements. The FDIC requires the Bank to maintain minimum capital ratios of total capital, tier 1 capital, and common equity tier 1 capital to risk-weighted assets as well as tier 1 leverage capital to average assets. In addition to the minimum capital ratios, the Bank must maintain a capital conservation buffer consisting of additional common equity tier 1 capital greater than 2.5% of risk-weighted assets above the required minimum levels in order to avoid limitations on paying dividends, engaging in share repurchases, and paying discretionary bonuses. At December 31, 2025, Banner and the Bank each exceeded all current regulatory capital requirements to be “well capitalized” and the fully phased-in capital conservation buffer requirement.

The following table shows the regulatory capital ratios for Banner and the Bank as of December 31, 2025.

Table 23: Regulatory Capital Ratios