EXHIBIT 99.1 HCW Biologics Reports Fourth Quarter 2025 and Fiscal Year 2025 Business Highlights and Financial Results Miramar, FL – March 31, 2026 – HCW Biologics Inc. (the "Company" or "HCW Biologics") (NASDAQ: HCWB), a clinical-stage biopharmaceutical company developing transformative fusion immunotherapeutics to support or treat diseases promoted by chronic inflammation, today reported financial results and recent business highlights for its three months ended December 31, 2025. On November 17, 2025, the ...