X0206 3 2021-07-19 0 0001828673 HCW Biologics Inc. HCWB 0001866258 Wong Hing C C/O HCW BIOLOGICS INC 2929 N. COMMERCE PARKWAY MIRAMAR FL 33025 1 1 0 0 Chief Executive Officer Common Stock 4285714 D Series A Redeemable Preferred Stock Common Stock 6316691 D Series B Redeemable Preferred Stock Common Stock 2954285 D Series C Redeemable Preferred Stock Common Stock 1071428 D The Series A Redeemable Preferred Stock is convertible into the issuer's common stock on a one-for-one basis and has no expiration date. It will automatically convert into common stock upon the closing of the issuer's initial public offering. Includes 902,977 shares purchased jointly by Hing C. Wong and Bee Yau Huang. The Series B Redeemable Preferred Stock is convertible into the issuer's common stock on a one-for-one basis and has no expiration date. It will automatically convert into common stock upon the closing of the issuer's initial public offering. Includes 1,525,714 shares purchased jointly by Hing C. Wong and Bee Yau Huang. The Series C Redeemable Preferred Stock is convertible into the issuer's common stock on a one-for-one basis and has no expiration date. It will automatically convert into common stock upon the closing of the issuer's initial public offering. Represents shares purchased jointly by Hing C. Wong and Bee Yau Huang. Exhibit 24.1: Power of Attorney /s/ Hing C. Wong 2021-07-19