144 0001470648 XXXXXXXX LIVE 0000230557 SELECTIVE INSURANCE GROUP INC 001-33067 40 WANTAGE AVENUE BRANCHVILLE NJ 07890 9739483000 Nicholson Cynthia S Director Common Stock Merrill Lynch

225 Liberty Street Floor 37 New York NY 10281

3691 364342.13 58996229 10/26/2026 NASDAQ Common Stock 05/05/2024 Vesting of restricted stock unit awards SELECTIVE INSURANCE GROUP INC N 1078 05/05/2024 Granted as part of director compensation Common Stock 05/03/2025 Vesting of restricted stock unit awards SELECTIVE INSURANCE GROUP INC N 1159 05/03/2025 Granted as part of director compensation Common Stock 05/02/2026 Vesting of restricted stock unit awards SELECTIVE INSURANCE GROUP INC N 1454 05/02/2026 Granted as part of director compensation Y 10/26/2026 Cynthia Nicholson