Exhibit 99.1 PLUMAS BANCORP REPORTS RECORD THIRD QUARTER 2026 EARNINGS Reno, Nevada, October 21, 2026 – Plumas Bancorp (Nasdaq: PLBC) referred to herein as the 'Company', the parent company of Plumas Bank, today announced record earnings during the third quarter of 2026 of $11.4 million, or $1.64 per share, an increase of $6.2 million from $5.1 million or $0.74 per share, during the third quarter of 2025. Diluted earnings per share increased to $1.61 per share during the three months ended September 30, 202 ...