RESULTS OF OPERATION AND FINANCIAL CONDITION On July 29, 2026, First Northern Community Bancorp issued a press release concerning financial results for the 2nd quarter of 2026, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

RESULTS OF OPERATION AND FINANCIAL CONDITION On April 29, 2026, First Northern Community Bancorp issued a press release concerning financial results for the 1st quarter of 2026, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

REGULATION FD DISCLOSURE On March 30, 2026, First Northern Community Bancorp issued a press release announcing a new stock repurchase program for the Company’s outstanding common stock, which was approved by the Company’s Board of Directors effective March 26, 2026. This new program will begin May 1, 2026 and remain in effect until April 30, 2028. A copy of this press release is furnished herewith as Exhibit 99.1.

OTHER EVENTS. The Board of Directors of First Northern Community Bancorp (FNRN), holding company of First Northern Bank, has announced a stock repurchase program for the Company’s outstanding common stock. Based on market conditions, share repurchases may be made from time to time in the open market or in privately negotiated transactions. The repurchase program will begin May 1, 2026 and will remain in effect until April 30, 2028, unless terminated sooner. The program allows repurchases in a…

OTHER EVENTS On January 22, 2026, the Board of Directors declared a 5% stock dividend, payable March 25, 2026 to shareholders of record as of February 27, 2026.

RESULTS OF OPERATION AND FINANCIAL CONDITION On January 29, 2026, First Northern Community Bancorp issued a press release concerning financial results for the fourth quarter of 2025, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

Director — Jean-Luc Servat: The filing announces the appointment of a new director to the board, which is a routine governance event and not a departure of an existing executive.

CFO — Kevin Spink: The filing discloses the execution of executive retirement and retention agreements, which are compensation arrangements rather than a departure or appointment event.

RESULTS OF OPERATION AND FINANCIAL CONDITION On October 29, 2025, First Northern Community Bancorp issued a press release concerning financial results for the 3rd quarter of 2025, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

RESULTS OF OPERATION AND FINANCIAL CONDITION On July 29, 2025, First Northern Community Bancorp issued a press release concerning financial results for the 2 nd quarter of 2025, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

Director — Foy S. McNaughton: The filing reports the retirement of a director and the simultaneous appointment of a successor, indicating an orderly board succession rather than a sudden executive loss.

CHANGES IN REGISTRANT’S CERTIFYING ACCOUNTANT On June 3, 2025, First Northern Community Bancorp, (the "Company") was notified that Moss Adams LLP ("Moss Adams"), the Company's independent registered public accounting firm, merged with Baker Tilly US, LLP effective on June 3, 2025. The combined audit practices operate as Baker Tilly US, LLP (“Baker Tilly”). In connection with the notification of the merger, Moss Adams has resigned as the auditors of the Company and the Audit Committee of the C…

RESULTS OF OPERATION AND FINANCIAL CONDITION On April 29, 2025, First Northern Community Bancorp issued a press release concerning financial results for the 1 st quarter of 2025, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

OTHER EVENTS On January 23, 2025, the Board of Directors declared a 5% stock dividend, payable March 25, 2025 to shareholders of record as of February 28, 2025.

RESULTS OF OPERATION AND FINANCIAL CONDITION On January 29, 2025, First Northern Community Bancorp issued a press release concerning financial results for the 4 th quarter of 2024, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

RESULTS OF OPERATION AND FINANCIAL CONDITION On October 29, 2024, First Northern Community Bancorp issued a press release concerning financial results for the 3 rd quarter of 2024, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

Director — Daniel F. Ramos: A director resigned for personal reasons with no indication of disagreement, representing a standard board turnover event.

RESULTS OF OPERATION AND FINANCIAL CONDITION On July 29, 2024, First Northern Community Bancorp issued a press release concerning financial results for the 2 nd quarter of 2024, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

REGULATION FD DISCLOSURE On June 18, 2024, First Northern Community Bancorp (the “Company”) released an investor presentation (the “Investor Presentation”) which includes updates regarding the Company’s financial position, business, and operations that management of the Company intends to use from time to time in investor communications and conferences. A copy of the Investor Presentation is attached hereto as Exhibit 99.1. In accordance with General Instruction B.2 of Form 8-K, the informati…

RESULTS OF OPERATION AND FINANCIAL CONDITION On April 29, 2024, First Northern Community Bancorp issued a press release concerning financial results for the 1 st quarter of 2024, a copy of which is included as ITEM 9.01 (c) Exhibit 99.1 and incorporated herein by reference in both

Chief Credit Officer — Joe Danelson: The filing reports the retirement of the Chief Credit Officer and the immediate appointment of a named successor, indicating an orderly succession rather than a sudden loss of leadership.

REGULATION FD DISCLOSURE On March 27, 2024, First Northern Community Bancorp issued a press release announcing a new stock repurchase program for the Company’s outstanding common stock, which was approved by the Corporation’s Board of Directors on March 21, 2024. This new program will begin May 1, 2024 and remain in effect until April 30, 2026. A copy of this press release is furnished herewith as Exhibit 99.1.

OTHER EVENTS The Board of Directors of First Northern Community Bancorp (FNRN), holding company of First Northern Bank, has announced a stock repurchase program for the Company’s outstanding common stock. Based on market conditions, share repurchases may be made from time to time in the open market or in privately negotiated transactions. The repurchase program will begin May 1, 2024 and will remain in effect until April 30, 2026, unless terminated sooner. The program allows repurchases in an…

ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT See disclosure at

CFO — Kevin Spink: The filing discloses the execution of a new employment agreement and compensation terms for the CFO, not a departure or change in office.