Other Events. On August 20, 2026, we announced that our Board of Directors has approved an additional 1 million shares for repurchase under our stock repurchase program, increasing the total remaining authorization to 1,078,731 shares.

Results of Operations and Financial Condition. On August 20, 2026, we issued a press release announcing our financial results for the quarter ended June 30, 2026. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934, as am…

Results of Operations and Financial Condition. On May 4, 2026, we issued a press release announcing our financial results for the quarter ended March 31, 2026. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934, as amend…

Results of Operations and Financial Condition. On January 29, 2026, we issued a press release announcing our financial results for the quarter ended December 31, 2025. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934,…

Entry Into or Amendment of a Material Definitive Agreement. On November 20, 2025, OSI Systems, Inc. (the “Company”) issued $500,000,000 aggregate principal amount of its 0.50% Convertible Senior Notes due 2031 (the “Notes”). The Notes were issued pursuant to, and are governed by, an indenture (the “Indenture”), dated as of November 20, 2025, between the Company and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”). Pursuant to the purchase agreement between the Company…

The Notes were issued to the initial purchasers in reliance upon Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), in transactions not involving any public offering. The Notes were resold by the initial purchasers to persons whom the initial purchasers reasonably believe are “qualified institutional buyers,” as defined in, and in accordance with, Rule 144A under the Securities Act. Any shares of the Company’s common stock that may be issued upon conversion of t…

Creation of a Direct Financial Obligation or an Off-Balance Sheet Arrangement. The disclosure set forth in

Other Events. On November 17, 2025, OSI Systems, Inc. (the “Company”) issued a press release relating to the pricing of its private offering of 0.50% Convertible Senior Notes due 2031 (the “ Notes ”) to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. A copy of the press release is attached hereto as Exhibit 99.1 and is also incorporated herein by reference. Neither this Current Report on Form 8-K nor the press release constitutes an offer to…

Other Events. On November 17, 2025, OSI Systems, Inc. (the “Company”) issued a press release relating to its proposed private offering of Convertible Senior Notes due 2031 (the “Notes”) to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. A copy of the press release is attached hereto as Exhibit 99.1 and is also incorporated herein by reference. Neither this Current Report on Form 8-K nor the press release constitutes an offer to sell, or the s…

Results of Operations and Financial Condition. On October 30, 2025, we issued a press release announcing our financial results for the quarter ended September 30, 2025. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934,…

Results of Operations and Financial Condition. On August 21, 2025, we issued a press release announcing our financial results for the quarter ended June 30, 2025. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934, as am…

Entry into a Material Definitive Agreement. On July 1, 2025, we entered into the Ninth Amendment to Credit Agreement (the “Amendment”) amending the Credit Agreement dated as of October 15, 2010 by and among us, as borrower, our domestic subsidiaries party thereto, as guarantors, and Wells Fargo Bank, N.A., as administrative agent for several lending banks and other financial institutions (as amended, supplemented or otherwise modified, the “Credit Agreement”). Wells Fargo Securities, LLC (“WF…

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

President — Manoocher Mansouri: The President of a major division is retiring but remaining as CTO, with a named internal successor (Paul Morben) taking over the role, indicating an orderly succession rather than a sudden loss of leadership.

Results of Operations and Financial Condition. On May 1, 2025, we issued a press release announcing our financial results for the quarter ended March 31, 2025. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934, as amend…

Results of Operations and Financial Condition. On January 23, 2025, we issued a press release announcing our financial results for the quarter ended December 31, 2024. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934,…

CEO — Ajay Mehra: The filing discloses the appointment of Ajay Mehra as President and CEO, a significant executive hire that is not a departure of a sitting officer.

CEO — Ajay Mehra: The filing announces the planned succession of the CEO role from Deepak Chopra to internal candidate Ajay Mehra, representing an orderly transition rather than a sudden loss of executive leadership.

Results of Operations and Financial Condition. On October 24, 2024, we issued a press release announcing our financial results for the quarter ended September 30, 2024. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934,…

Chief Accounting Officer — Cary Okawa: The filing discloses the internal promotion of Cary Okawa from Vice President and Corporate Controller to Chief Accounting Officer, which is a succession of roles rather than a departure.

Results of Operations and Financial Condition. On August 22, 2024, we issued a press release announcing our financial results for the quarter ended June 30, 2024. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated herein by this reference. We are furnishing the information contained in this Item 2.02 (including Exhibit 99.1). It shall not be deemed to be “filed” for any purpose, including for the purposes of Section 18 of the Securities Exchange Act of 1934, as am…

Creation of a Direct Financial Obligation or an Off-Balance Sheet Arrangement. The disclosure set forth in

Entry Into or Amendment of a Material Definitive Agreement. On July 19, 2024, OSI Systems, Inc. (the “Company”) issued $350,000,000 aggregate principal amount of its 2.25% Convertible Senior Notes due 2029 (the “Notes”). The Notes were issued pursuant to, and are governed by, an indenture (the “Indenture”), dated as of July 19, 2024, between the Company and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”). Pursuant to the purchase agreement between the Company and the…

The Notes were issued to the initial purchasers in reliance upon Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”), in transactions not involving any public offering. The Notes were resold by the initial purchasers to persons whom the initial purchasers reasonably believe are “qualified institutional buyers,” as defined in, and in accordance with, Rule 144A under the Securities Act. Any shares of the Company’s common stock that may be issued upon conversion of t…

Other Events. On July 16, 2024, OSI Systems, Inc. (the “ Company ”) issued a press release relating to the pricing of its private offering of 2.25% Convertible Senior Notes due 2029 (the “ Notes ”) to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. A copy of the press release is attached hereto as Exhibit 99.1 and is also incorporated herein by reference. Neither this Current Report on Form 8-K nor the press release constitutes an offer to se…