First Busey Corporation (BUSE) Income Statement

The move from about $82M to $150M+ per quarter over 2025 points to an inorganic balance sheet expansion, and the flattening through 2026 suggests much of that uplift has already been absorbed into the run rate. The reported negative NII in Q2 2026 is inconsistent with the surrounding quarters and likely reflects a data or classification issue that warrants reconciliation before any trend conclusion is drawn. Investors should monitor whether deposit betas keep rising, since a flat NII line with a rising funding cost would compress spread income going forward.

A 0.8% margin is low for a regional bank and, even allowing for the distortions introduced by acquisition accounting, suggests asset yields are not keeping pace with funding costs. The data does not allow a clean separation of accretable yield from core spread, so the reported margin may overstate or understate underlying profitability. Analysts should request core NIM disclosure and compare it against Fulton and NBT, whose profitability profiles appear more stable across the peer set.

Operating income moved from a loss of $32.7M in Q1 2025 to $77.5M in Q4 2025, indicating that expense absorption improved sharply once the acquired franchise was integrated. The more stable readings in the 60% to 66% range in late 2025 and early 2026 suggest a sustainable cost base, though a 57.6% reading alongside a 2026 operating margin of roughly 18% does not appear to reflect structural efficiency alone. Investors should monitor whether non-interest expense growth keeps pace with revenue as FirsTech scales.

Provision levels in most quarters appear modest relative to the loan book implied by NII, which may indicate benign credit conditions or reserve levels that have not yet been stress-tested against a downturn. The Q1 2025 spike coincides with the acquisition-related loss and may reflect purchase-accounting day-one provisioning rather than ongoing credit deterioration. Given the agricultural and CRE exposure in Central Illinois and St. Louis, investors should monitor reserve coverage closely.

The decline in fee share from roughly 30% in 2024 to about 21% in 2025 and 2026 suggests that the acquired lending franchise expanded revenue more than FirsTech and Wealth Management did in absolute terms. The fee stream still provides diversification and likely carries higher margins than spread income, but its relative weight has weakened. Management's ability to re-accelerate fee growth will determine whether BUSE retains its differentiated earnings mix versus peers like Commerce Bancshares.