Director — Mr. Thierry Bernard: Mr. Thierry Bernard resigned from the Board of Directors.

Results of Operations and Financial Condition On July 30, 2026, Neogen Corporation issued a press release announcing results of operations for its fiscal 2026 fourth quarter and full fiscal year ended May 31, 2026. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Reg…

Results of Operations and Financial Condition On April 9, 2026, Neogen Corporation issued a press release announcing results of operations for its fiscal 2026 third quarter ended February 28, 2026. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Registrant, whether…

Chief Legal and Administrative Officer — Amy Rocklin: Amy Rocklin is leaving the Company effective March 31, 2026.

Results of Operations and Financial Condition On January 8, 2026, Neogen Corporation issued a press release announcing results of operations for its fiscal 2026 second quarter ended November 30, 2025. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Registrant, wheth…

CFO — Bryan Riggsbee: The filing announces the external appointment of a new CFO with significant prior experience, which is a positive signal for leadership stability but does not constitute a departure of a sitting executive.

Director — Avi Pelossof: The filing clarifies committee assignments for a newly appointed director, which is a routine administrative detail of a board election rather than an executive departure.

Results of Operations and Financial Condition On October 9, 2025, Neogen Corporation issued a press release announcing results of operations for its fiscal 2026 first quarter ended August 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Registrant, whether…

CFO — David Naemura: The CFO and COO is resigning to pursue other opportunities, representing the loss of a key senior executive despite an orderly transition plan.

The filing discloses the granting of Performance Share Units (PSUs) as part of long-term incentive compensation, which is a compensatory arrangement rather than a change in management personnel.

Director — William T. Boehm: The filing discloses the planned retirement of a long-serving director with a named successor, representing an orderly board succession rather than a sudden executive loss.

Results of Operations and Financial Condition On July 29, 2025, Neogen Corporation issued a press release announcing results of operations for its fiscal 2025 fourth quarter and twelve months ended May 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Regist…

CEO — Mikhael Nassif: The filing announces the appointment of an external candidate as President and CEO, which is a significant management change but not a departure of a sitting executive.

Director — James P. Tobin: The filing reports the retirement of a long-serving director with an immediate, named successor appointment, representing an orderly board succession rather than a loss of senior executive management.

Results of Operations and Financial Condition On April 9, 2025, Neogen Corporation issued a press release announcing preliminary results of operations for its fiscal 2025 third quarter ended February 28, 2025. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Registra…

CEO — John Adent: The CEO is stepping down with a structured transition plan, a special search committee, and a defined separation date, indicating an orderly succession rather than a sudden loss.

Entry into a Material Definitive Agreement. On April 4, 2025 (the “ Amendment Effective Date ”), Neogen Corporation (the " Company "), Neogen Food Safety Corporation (the “ Company ,” and together with Parent, the “ Borrowers ”) and certain subsidiaries of the Company entered into the Amendment No. 1 and Refinancing Amendment to Credit Agreement (the “ Refinancing Amendment ”), which amended the existing credit agreement, dated June 30, 2022 (as amended, restated, amended and restated, supple…

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

Results of Operations and Financial Condition On January 10,2025, Neogen Corporation issued a press release announcing preliminary results of operations for its fiscal 2025 second quarter ended November 30, 2024. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Regis…

COO — Doug Jones: The CFO is promoted to COO to succeed the retiring COO in a planned transition, representing an orderly succession rather than a sudden loss of leadership.

Director — Thierry Bernard: The filing clarifies committee assignments for a newly appointed director, which is a routine administrative detail of a board election rather than an executive departure.

COO — Douglas E. Jones: The COO is retiring with a planned transition and reorganization of reporting lines, indicating an orderly succession rather than a sudden loss.

Results of Operations and Financial Condition On October 10, 2024, Neogen Corporation issued a press release announcing results of operations for its fiscal 2025 first quarter ended August 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Registrant, whether…

Director — Thierry Bernard: The filing announces the appointment of a new independent director to the board, which is a routine governance event and not a departure of a senior executive.

Results of Operations and Financial Condition On July 30, 2024, Neogen Corporation issued a press release announcing results of operations for its fiscal 2024 fourth quarter and twelve months ended May 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this report. This Form 8-K and the attached exhibit shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and are not incorporated by reference into any filing of the Regist…