WW International (WW) 8-K Regulation FD Disclosure

Exhibit 99.1

For more information, contact:

Investors:

Corey Kinger, WW

212.601.7569

corey.kinger@weightwatchers.com

WW Prepays Portion of Term Loan Facility

NEW YORK (May 31, 2019)– On May 31, 2019, Weight Watchers International, Inc. (NASDAQ: WW) voluntarily prepaid $50 million of term loans outstanding under its credit agreement. After giving effect to the prepayment, approximately $1.39 billion of term loans remain outstanding under such credit agreement.

As a result of this prepayment, the Company does not expect that it will have to make any mandatory prepayments of its term loans from excess cash flow for its 2019 fiscal year.

About Weight Watchers International, Inc.

WW – the new Weight Watchers – is a global wellness company and the world’s leading commercial weight management program. We inspire millions of people to adopt healthy habits for real life. Through our engaging digital experience andface-to-face group workshops, members follow our livable and sustainable program that encompasses healthy eating, physical activity, and a helpful mindset. With more than five decades of experience in building communities and our deep expertise in behavioral science, we aim to deliver wellness for all. To learn more about the WW approach to healthy living, please visitww.com. For more information about our global business, visit our corporate website atcorporate.ww.com.

This news release includes “forward-looking statements,” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, including, in particular, any statements about the Company’s plans, strategies and prospects. The Company generally uses the words “may,” “will,” “could,” “expect,” “anticipate,” “believe,” “estimate,” “plan,” “intend” and similar expressions in this news release to identify forward-looking statements. The Company bases these forward-looking statements on its current views with respect to future events and financial performance. Actual results could differ materially from those projected in the forward-looking statements. These forward-looking statements are subject to risks, uncertainties and assumptions, including, among other things: competition from other weight management and wellness industry participants or the development of more effective or more favorably perceived weight management methods; the Company’s ability to continue to develop new, innovative services and products and enhance its existing services and products or the failure of its services, products or brands to continue to appeal to the market, or the Company’s ability to successfully expand into new channels of distribution or respond to consumer trends; the ability to successfully implement new strategic initiatives; the effectiveness of the Company’s advertising and marketing programs, including the strength of its social media presence; the impact on the Company’s reputation of actions taken by its franchisees,

licensees, suppliers and other partners; the impact of the Company’s substantial amount of debt and its debt service obligations and debt covenants; the ability to generate sufficient cash to service the Company’s debt and satisfy its other liquidity requirements; uncertainties regarding the satisfactory operation of the Company’s technology or systems; the impact of security breaches or privacy concerns; the recognition of asset impairment charges; the loss of key personnel, strategic partners or consultants or failure to effectively manage and motivate the Company’s workforce; the inability to renew certain of the Company’s licenses, or the inability to do so on terms that are favorable to the Company; the expiration or early termination by the Company of leases; risks and uncertainties associated with the Company’s international operations, including regulatory, economic, political and social risks and foreign currency risks; uncertainties related to a downturn in general economic conditions or consumer confidence; the Company’s ability to successfully make acquisitions or enter into joint ventures, including its ability to successfully integrate, operate or realize the anticipated benefits of such businesses; the seasonal nature of the Company’s business; the impact of events that discourage or impede people from gathering with others or accessing resources; the Company’s ability to enforce its intellectual property rights both domestically and internationally, as well as the impact of its involvement in any claims related to intellectual property rights; the outcomes of litigation or regulatory actions; the impact of existing and future laws and regulations; the Company’s failure to maintain effective internal control over financial reporting; the possibility that the interests of Artal Group S.A., the largest holder of the Company’s common stock and a shareholder with significant influence over the Company, will conflict with the Company’s interests or the interests of other holders of the Company’s common stock; the impact that the sale of substantial amounts of the Company’s common stock by existing large shareholders, or the perception that such sales could occur, could have on the market price of the Company’s common stock; and other risks and uncertainties, including those detailed from time to time in the Company’s periodic reports filed with the Securities and Exchange Commission. You should not put undue reliance on any forward-looking statements. You should understand that many important factors, including those discussed herein, could cause the Company’s results to differ materially from those expressed or suggested in any forward-looking statement. Except as required by law, the Company does not undertake any obligation to update or revise these forward-looking statements to reflect new information or events or circumstances that occur after the date of this news release or to reflect the occurrence of unanticipated events or otherwise. Readers are advised to review the Company’s filings with the United States Securities and Exchange Commission (which are available on the SEC’s EDGAR database at www.sec.gov and via the Company’s website at corporate.ww.com).