Form 3 Filing for Freddy I. Rivas

This filing reports the initial ownership of securities by Freddy I. Rivas, Chief Credit Officer of Coastal Financial Corp. As of April 2, 2026, Mr. Rivas directly owns 12,050 shares of common stock. This total includes 3,689 time-based restricted stock units (RSUs) and 8,250 performance-based restricted stock units, which are eligible to vest between July 31, 2026, and July 31, 2029, subject to performance goals. The filing also includes a Power of Attorney document, authorizing Eric M. Sprink, Brandon J. Soto, or Melisa Nelson to act on Mr. Rivas's behalf for SEC filings related to Coastal Financial Corp. securities.