X0609 4 2026-08-03 0 0001736730 Camp4 Therapeutics Corp CAMP 0001490283 Young Richard A false C/O CAMP4 THERAPEUTICS CORPORATION ONE KENDALL SQ., BLDG 1400 WEST, 3RD FL. CAMBRIDGE MA 02139 1 0 0 0 0 Common Stock 2026-08-03 4 P 0 16378 1.65 A 186388 D On August 3, 2026, the reporting person acquired shares in the second closing of a private placement by the Issuer pursuant to the terms of a Securities Purchase Agreement, dated as of September 9, 2025, as amended on August 3, 2026, by and among the Issuer and certain institutional investors and certain directors, employees, and consultants, at a purchase price of $1.65 per share. /s/ Kelly Gold, as Attorney-in-Fact 2026-08-05