Results of Operations and Financial Condition. On July 23, 2026, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the second quarter ended June 30, 2026. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

Executive Vice President and Chief Investment Officer — Joseph O. Eppers: Mr. Eppers retired and was succeeded by Vaibhav Kalia as Interim Chief Investment Officer.

Results of Operations and Financial Condition. On April 22, 2026, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the first quarter ended March 31, 2026. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

Results of Operations and Financial Condition. On January 29, 2026, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the fourth quarter ended December 31, 2025. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

Director — Julie Parsons: The filing discloses the appointment of a new non-employee director to an expanded board, which is a routine governance action rather than an executive departure.

Results of Operations and Financial Condition. On October 22, 2025, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the third quarter ended September 30, 2025. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

Other Events. On October 22, 2025, the Company announced that its Board of Directors (the “Board”) approved a $200 million share repurchase program (the “New Repurchase Program”) effective October 27, 2025. Under the New Repurchase Program, the Company will be authorized to repurchase issued and outstanding shares of the Company’s common stock in an aggregate amount of up to $200 million, exclusive of any excise tax impact. Repurchases under the New Repurchase Program may be made through a va…

Director — Wole Coaxum: The resignation of a single board director is a standard governance change with low materiality and no indication of internal conflict.

Results of Operations and Financial Condition. On July 23, 2025, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the second quarter ended June 30, 2025. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

Termination of a Material Definitive Agreement. Selective was a party to that certain Credit Agreement (the “Prior Credit Agreement”), by and among Selective, the lenders named therein (collectively, the “Prior Credit Agreement Lenders”), and the Administrative Agent, dated November 7, 2022, pursuant to which the Prior Credit Agreement Lenders agreed to provide Selective with a $50 million revolving credit facility, which could be increased to $125 million with the consent of the Prior Credit…

Entry into a Material Definitive Agreement. On June 30, 2025, Selective Insurance Group, Inc. (“Selective”) entered into that certain Credit Agreement (the “Agreement”), by and among Selective, the lenders named therein (collectively, the “Lenders”), and Wells Fargo Bank, National Association, as administrative agent (the “Administrative Agent”). Under the Agreement, the Lenders have agreed to provide Selective with a $100 million revolving credit facility, which can be increased to $200 mill…

COO — Brenda M. Hall: The COO is retiring in an orderly manner with a planned transition period and no reported disagreement, indicating a planned succession rather than a sudden loss.

Results of Operations and Financial Condition. On April 23, 2025, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the first quarter ended March 31, 2025. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

Entry into a Material Definitive Agreement. On February 25, 2025, Selective Insurance Group, Inc. (the “Company”) issued $ 400,000,000 aggregate principal amount of its 5.900 % Senior Notes due 20 35 (the “Securities”) pursuant to a Prospectus Supplement, dated February 20 , 2025 (the “Prospectus Supplement”), to the Prospectus, dated May 30, 2024, filed as part of the Company’s Registration Statement on Form S-3ASR (Registration No. 333-279815) filed with the U.S. Securities and Exchange Com…

Results of Operations and Financial Condition. On January 29, 2025, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the fourth quarter ended December 31, 2024. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

Results of Operations and Financial Condition. On October 21, 2024, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the third quarter ended September 30, 2024. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

CFO — Patrick S. Brennan: The filing announces the external hire of a new CFO, Patrick S. Brennan, replacing the interim CFO, which is a significant management change but not a departure of a sitting executive.

Results of Operations and Financial Condition. On July 18, 2024, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the second quarter ended June 30, 2024. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD

Director — Kate Sampson: The filing discloses the appointment of a new non-employee director to an expanded board, which is a routine governance action rather than an executive departure.

The excerpt describes the approval of a stock compensation plan, which is a non-management matter mis-filed under Item 5.02.

Results of Operations and Financial Condition. On May 1, 2024, Selective Insurance Group, Inc. (the “Company”) issued a press release announcing results for the first quarter ended March 31, 2024. The press release is attached hereto as Exhibit 99.1. Section 7 – Regulation FD