X0508 4 2023-11-30 0001835597 PepGen Inc. PEPG 0001763307 McArthur James G 321 HARRISON AVE., 8TH FLOOR C/O PEPGEN INC. BOSTON MA 02118 1 1 President and CEO 0 Common Stock 2023-11-30 4 P 0 1694 4.165 A 1694 D Shares of Common Stock purchased pursuant to the PepGen Inc. 2022 Employee Stock Purchase Plan ("ESPP"), for the purchase period of June 1, 2023 to November 30, 2023. In accordance with the ESPP, these shares were purchased at a price equal to 85% of the closing price of PepGen's Common Stock on November 30, 2023. /s/ Noel Donnelly, as Attorney-in-Fact 2023-12-04