SCHEDULE 13G/A 0001085146-25-001358 0000763212 XXXXXXXX LIVE 1 ADR 06/30/2025 0001671927 Immunocore Holdings plc - ADR 45258D105 92 Park Drive Milton Park Abingdon, Oxfordshire X0 OX14 4RY Rule 13d-1(b) PRIMECAP MANAGEMENT CO/CA/ X1 3746574.00 0.00 3772234.00 0.00 3772234.00 N 7.51 IA Immunocore Holdings plc - ADR 92 Park Drive Milton Park, Abingdon, Oxfordshire, UNITED KINGDOM OX14 4RY PRIMECAP MANAGEMENT CO/CA/ 177 EAST COLORADO BLVD. 11TH FLOOR PASADENA, California 91105 PRIMECAP MANAGEMENT CO/CA/ - UNITED STATES N IA 3,772,234 7.51 PRIMECAP MANAGEMENT CO/CA/ - 3,746,574 PRIMECAP MANAGEMENT CO/CA/ - 0 PRIMECAP MANAGEMENT CO/CA/ - 3,772,234 PRIMECAP MANAGEMENT CO/CA/ - 0 Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. PRIMECAP MANAGEMENT CO/CA/ Jorge A. Rodriguez 08/14/2025