Herbalife Ltd (NYSE: HLF) shares plunged 12.5% on Monday after the company disclosed that Chief Executive Officer Stephan Gratziani will leave his executive position effective October 31, 2026 and move into a consultant role focused on strategy and business development.
The announcement said Gratziani will revert his principal attention to his independent distributorship, which the company described as comprising nearly 700,000 distributors and preferred members. At the same time, Herbalife's Board of Directors has formed a committee to oversee the search for his successor.
Chief Financial Officer John DeSimone will assume the role of Interim Chief Executive Officer starting November 1, 2026 while the Board's committee conducts the succession process. DeSimone has been with Herbalife for nearly 20 years and has held several senior leadership roles, including President, Chief Strategy Officer, and Special Advisor to the CEO.
Gratziani originally joined Herbalife in August 2023 as Chief Strategy Officer under an initial two-and-a-half-year agreement. His hiring came when the company was facing a difficult post-pandemic period that coincided with 12 consecutive quarters of declining results. The company states that since his arrival, Herbalife has returned to growth.
In his statement, Gratziani said that with the business back on a growth trajectory and a stronger foundation in place, the company is ready to move into its next phase with a heightened emphasis on execution and operations across its global footprint.
The company reaffirmed its financial outlook for both the third quarter and the full year 2026. Herbalife continues to expect year-over-year net sales growth for the third quarter and full year of 2026 on both a reported and constant currency basis. The firm reiterated adjusted EBITDA guidance of $160 million to $180 million for the third quarter and $670 million to $690 million for the full year.
Commenting on the outlook, DeSimone said, "Our outlook for the remainder of the year remains firmly on track."
For context on recent performance, Herbalife reported third quarter 2025 net sales of $1,273.7 million and adjusted EBITDA of $163.0 million. For full-year 2025, net sales were $5,037.5 million with adjusted EBITDA of $657.6 million.
Implications and context
- Leadership transition: The CEO's planned move to a consulting role and the appointment of an interim CEO create a defined succession timeline through late 2026, with the Board's committee charged with selecting the next permanent leader.
- Market reaction: The stock's immediate 12.5% decline reflects investor sensitivity to top-level leadership changes despite the company reaffirming its 2026 guidance.
- Operational focus: Management framed the next stage as one of increased execution and operational emphasis across Herbalife's global operations.
What remains uncertain
- The timeline and outcome of the Board-led succession process - the committee has been formed, but no candidates or timetable beyond the interim CEO appointment have been disclosed.
- The practical implications of Gratziani narrowing his scope to consultancy and his distributorship role - the company noted the change in focus but did not provide further operational detail.
- How investors will assess management continuity and execution risk ahead of the end of 2026, despite reaffirmed guidance for the third quarter and full year.