Chairman of the Board — J. Stanley Fredrick: The Chairman is retiring for personal reasons with a pre-arranged internal successor (Vice Chairman), indicating an orderly succession rather than a sudden loss of leadership.

Results of Operations and Financial Condition. On August 12, 2026, Mannatech, Incorporated issued a press release announcing financial and operating results for the second quarter ended June 30, 2026. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

CFO — Yasir Haider: Yasir Haider was promoted to CFO, replacing James Clavijo.

Results of Operations and Financial Condition. On May 14, 2026, Mannatech, Incorporated issued a press release announcing financial and operating results for the first quarter ended March 31, 2026. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On April 20, 2026, Mannatech, Incorporated (the “Company”) received written notification (the “Notice”) from the Listing Qualifications Department of the Nasdaq Stock Market LLC (“Nasdaq”) notifying the Company that it is not in compliance with Nasdaq Listing Rule 5550(b)(1) (the “Rule”), which requires listed companies on the Nasdaq Capital Market to maintain minimum stockholders’ equity of $…

Results of Operations and Financial Condition. On April 15, 2026, Mannatech, Incorporated issued a press release announcing financial and operating results for the fourth quarter and year ended December 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

CFO — James Clavijo: The CFO's employment agreement will not be renewed, and he is departing the company.

Results of Operations and Financial Condition. On November 12, 2025, Mannatech, Incorporated issued a press release announcing financial and operating results for the third quarter ended September 30, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Entry into a Material Definitive Agreement. On September 9, 2025, Mannatech, Incorporated (the “Company”) entered into three separate Loan Extension Agreements (the “Extension Agreements”) pertaining to the three separate unsecured Loan Agreement and Promissory Notes dated April 23, 2024 (“Promissory Notes”) with three related parties, who are all current members of the Company’s Board of Directors and stockholders of the Company, in an aggregate principal amount of $3.6 million (of which $2.…

Results of Operations and Financial Condition. On May 13, 2025 , Mannatech, Incorporated issued a press release announcing financial and operating results for the second quarter ended June 30, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Chief Operating Officer — Peter Griscom: The resignation of the Chief Operating Officer is a significant loss for the company.

Chief Operating Officer — Peter Griscom: Peter Griscom was promoted to Chief Operating Officer.

Results of Operations and Financial Condition. On May 13, 2025 , Mannatech, Incorporated issued a press release announcing financial and operating results for the third quarter ended March 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Results of Operations and Financial Condition. On March 26, 2025, Mannatech, Incorporated issued a press release announcing financial and operating results for the fourth quarter ended December 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Vice Chairman of the Board — Robert A. Toth: Mr. Robert A. Toth was appointed as a non-employee board member and Vice Chairman of the Board.

Results of Operations and Financial Condition. On November 12, 2024 , Mannatech, Incorporated issued a press release announcing financial and operating results for the third quarter ended September 30, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On September 26, 2024, the Nasdaq Listing Qualifications Department of the Nasdaq Stock Market (the “Nasdaq”) notified Mannatech Inc. (the “Company”) in writing (the “Notice”) that its application to transfer the listing of its common stock (the “Securities”) to The Nasdaq Capital Market has been approved as allowed under Listing Rule 5810(c)(3)(A). The Company's common stock will begin tradin…

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. On August 19, 2024, Mannatech, Incorporated (the “Company”) received a written notification from the Listing Qualifications Department of the Nasdaq Stock Market (“Nasdaq”) notifying the Company that, based on the Company’s Quarterly Report on Form 10‑Q for the quarter ended June 30, 2024, the Company’s stockholders’ equity was $8,199,000, and therefore, the Company was not in compliance with…

Results of Operations and Financial Condition. On August 13, 2024 , Mannatech, Incorporated issued a press release announcing financial and operating results for the third quarter ended June 30, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Entry into a Material Definitive Agreement Per the terms of the Executive Employment Agreement with Mr. Clavijo, he is entitled to an annual base salary of $275,000 and is eligible to participate in the Company's annual executive bonus program established by the Board of Directors' Compensation Committee. The Company will also grant an option to Mr. Clavijo to purchase 4,500 shares of the Company's common stock, pursuant to the Company's 2017 Stock Incentive Plan. The stock option grant will…

Chief Financial Officer (CFO) — James Clavijo: The company hired an experienced CFO to replace the interim CFO.

Results of Operations and Financial Condition. On May 14, 2024 , Mannatech, Incorporated issued a press release announcing financial and operating results for the third quarter ended March 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

Entry into a Material Definitive Agreement. On April 23, 2024 Mannatech Incorporated (the “Company”) entered into three separate unsecured Loan Agreement and Promissory Notes (“Promissory Notes”) with three related parties, who are all current members of the Company’s Board of Directors and stockholders of the Company, in an aggregate principal amount of $3.6 million. The lenders are J. Stanley Fredrick, Chairman of the Board and our largest shareholder, Tyler Rameson, our second largest shar…

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

Results of Operations and Financial Condition. On March 28, 2024, Mannatech, Incorporated issued a press release announcing financial and operating results for the fourth quarter ended December 31, 2023. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K.