X0609 4 2026-05-20 0001799011 Lucid Diagnostics Inc. LUCD 0001817012 Matheis Dennis false 360 MADISON AVENUE, 25TH FLOOR NEW YORK NY 10017 1 0 0 0 0 Common Stock 2026-05-20 4 P 0 245000 1.0011 A 1033443 D The price reported in Column 4 is a weighted average purchase price. These shares were purchased in multiple transactions at prices ranging from $0.9375 to $1.0200, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth herein. /s/ Michael A. Gordon, by power of attorney 2026-05-21