Exhibit 3.1

AMENDED AND RESTATED

BYLAWS

of

WW INTERNATIONAL, INC.

(effective as of October 1, 2020)

ARTICLE I

MEETINGS OF SHAREHOLDERS

Section 1.1. Place of Meetings.

Except as otherwise provided in the Amended and Restated Articles of Incorporation (hereinafter called the “Articles”) of WW International, Inc. (hereinafter called the “Corporation”), all meetings of the shareholders of the Corporation shall be held (i) at such places, either within or without the Commonwealth of Virginia, or (ii) in the case of virtual-only meetings, at no physical place but solely by means of remote communication, in each case, as the Board of Directors of the Corporation (hereinafter called the “Board”) may in its discretion determine.

Section 1.2. Annual Meetings.

The annual meeting of the shareholders of the Corporation for the election of directors and for the transaction of such other business as may properly come before the meeting shall be held in each year on such day as may be fixed by the Board, at such hour as may be specified in the notice thereof.

Section 1.3. Notice of Meetings.

Except as otherwise provided by law or the Articles, not less than 10 nor more than 60 days’ notice in writing of the place (if any), day, hour and purpose or purposes of each meeting of the shareholders, whether annual or special, shall be given to each shareholder of record of the Corporation entitled to vote at such meeting. Notice of a shareholders’ meeting to act on an amendment of the Articles, a plan of merger or share exchange, a proposed sale of all, or substantially all of the Corporation’s assets, otherwise than in the usual and regular course of business, or the dissolution of the Corporation shall be given not less than 25 nor more than 60 days before the date of the meeting and shall be accompanied, as appropriate, by a copy of the proposed amendment, plan of merger or share exchange or sale agreement. Notice of any meeting of shareholders shall not be required to be given to any shareholder who shall attend the meeting in person or by proxy, unless attendance is for the express purpose of objecting to the transaction of any business because the meeting was not lawfully called or convened, or who shall waive notice thereof in a writing signed by the shareholder before, at or after such meeting. Notice of any adjourned meeting need not be given, except when expressly required by law.

Section 1.4. Quorum.

Shares representing a majority of the votes entitled to be cast on a matter by all classes or series that are entitled to vote thereon and be counted together collectively, represented in person or by proxy at any meeting of the shareholders, shall constitute a quorum for the transaction of business thereat with respect to such matter, unless otherwise provided by law or the Articles. In the absence of a quorum at

any such meeting or any adjournment or adjournments thereof, the chairman of such meeting or the holder of shares representing a majority of the votes cast on the matter of adjournment, either in person or by proxy, may adjourn such meeting from time to time until a quorum is obtained. At any such adjourned meeting at which a quorum has been obtained, any business may be transacted that might have been transacted at the meeting as originally called.

Section 1.5. Organization and Order of Business.

At all meetings of the shareholders, the Chairman of the Board or, in the Chairman’s absence, such director of the Corporation as designated in writing by the Chairman of the Board shall act as chairman. In the absence of all of the foregoing persons, or, if present, with their consent, a majority of the shares entitled to vote at such meeting, may appoint any person to act as chairman. The Secretary of the Corporation shall act as secretary at all meetings of the shareholders. In the absence of the Secretary, the chairman may appoint any person to act as secretary of the meeting.

The chairman shall have the right and authority to prescribe such rules, regulations and procedures and to do all such acts and things as are necessary or desirable for the proper conduct of the meeting, including, without limitation, the establishment of procedures for the dismissal of business not properly presented, the maintenance of order and safety, limitations on the time allotted to questions or comments on the affairs of the Corporation, restrictions on entry to such meeting after the time prescribed for the commencement thereof and the opening and closing of the voting polls.

At each annual meeting of shareholders, only such business shall be conducted as shall have been properly brought before the meeting (a) by or at the direction of the Board or (b) by any shareholder of the Corporation who shall be entitled to vote at such meeting and who complies with the notice procedures set forth in this Section 1.5. In addition to any other applicable requirements, for business to be properly brought before an annual meeting by a shareholder, the shareholder must have given timely notice thereof in writing to the Secretary of the Corporation. To be timely, a shareholder’s notice must be given, either by personal delivery or by United States certified mail, postage prepaid, and received at the principal executive offices of the Corporation (i) not less than 120 days nor more than 150 days before the first anniversary of the date of the Corporation’s proxy statement in connection with the last annual meeting of shareholders or (ii) if no annual meeting was held in the previous year or the date of the applicable annual meeting has been changed by more than 30 days from the date of the previous year’s annual meeting, not less than 60 days before the date of the applicable annual meeting. A shareholder’s notice to the Secretary shall set forth as to each matter the shareholder proposes to bring before the annual meeting (a) a brief description of the business desired to be brought before the annual meeting, including the complete text of any resolutions to be presented at the annual meeting, and the reasons for conducting such business at the annual meeting, (b) the name and address, as they appear on the Corporation’s stock transfer books, of such shareholder proposing such business, (c) a representation that such shareholder is a shareholder of record and intends to appear in person or by proxy at such meeting to bring the business before the meeting specified in the notice, (d) the class, series and number of shares of stock of the Corporation beneficially owned by the shareholder and (e) any material interest of the shareholder in such business. The Secretary of the Corporation shall deliver each such shareholder’s notice that has been timely received to the Board or a committee designated by the Board for review. Notwithstanding the foregoing, at any time that Artal Luxembourg S.A. (“Artal”) or a Majority Transferee owns a majority of the then outstanding shares of common stock, no par value (the “Common Stock”), of the Corporation, notice by Artal or a Majority Transferee shall be timely and complete if delivered in writing or orally at any time prior to the annual meeting. Notwithstanding anything in the Bylaws to the contrary, no business shall be conducted at an annual meeting except in

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accordance with the procedures set forth in this Section 1.5. The chairman of an annual meeting shall, if the facts warrant, determine that the business was not brought before the meeting in accordance with the procedures prescribed by this Section 1.5. If the chairman should so determine, he shall so declare to the meeting and the business not properly brought before the meeting shall not be transacted. Notwithstanding the foregoing provisions of this Section 1.5, a shareholder seeking to have a proposal included in the Corporation’s proxy statement shall comply with the requirements of Regulation 14A under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), including, but not limited to, Rule 14a-8 or its successor provision. For purposes of these Bylaws, “Majority Transferee” shall mean a transferee from Artal or any other Majority Transferee of a majority of the then outstanding shares of Common Stock that pursuant to an instrument of transfer or related agreement has been granted rights under such provision by Artal or such transferring Majority Transferee. For purposes of these Bylaws, the word “own” shall mean “beneficially own” as determined pursuant to Rule 13d-3 (or any successor provision thereto) under the Exchange Act.

Section 1.6. Voting.

Unless otherwise provided by law or the Articles, at each meeting of the shareholders each shareholder entitled to vote at such meeting may vote either in person or by proxy in writing. Unless demanded by a shareholder present in person or represented by proxy at any meeting of the shareholders and entitled to vote thereon or so directed by the chairman of the meeting, the vote on any matter need not be by ballot. On a vote by ballot, each ballot shall be signed by the shareholder voting or his proxy, and it shall show the number of shares voted.

Section 1.7. Written Authorization.

A shareholder or a shareholder’s duly authorized attorney-in-fact may execute a writing authorizing another person or persons to act for him as proxy. Execution may be accomplished by the shareholder or such shareholder’s duly authorized attorney-in-fact or authorized officer, director, employee or agent signing such writing or causing such shareholder’s signature to be affixed to such writing by any reasonable means including, but not limited to, by facsimile signature.

Section 1.8. Electronic Authorization.

The Secretary may approve procedures to enable a shareholder or a shareholder’s duly authorized attorney-in-fact to authorize another person or persons to act for him as proxy by transmitting or authorizing the transmission of a telephone transmission or an electronic transmission to the person who will be the holder of the proxy or to a proxy solicitation firm, proxy support service organization or like agent duly authorized by the person who will be the holder of the proxy to receive such transmission, provided that any such transmission must either set forth or be submitted with information from which the judges or inspectors of election can determine that the transmission was authorized by the shareholder or the shareholder’s duly authorized attorney-in-fact. If it is determined that such transmissions are valid, the judges or inspectors shall specify the information upon which they relied. Any copy, facsimile telecommunication or other reliable reproduction of the writing or transmission created pursuant to this Section 1.8 may be substituted or used in lieu of the original writing or transmission for any and all purposes for which the original writing or transmission could be used, provided that such copy, facsimile telecommunication or other reproduction shall be a complete reproduction of the entire original writing or transmission.

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Section 1.9. Judges.

One or more judges or inspectors of election for any meeting of shareholders may be appointed by the chairman of such meeting, for the purpose of receiving and taking charge of proxies and ballots and deciding all questions as to the qualification of voters, the validity of proxies and ballots and the number of votes properly cast.

ARTICLE II

BOARD OF DIRECTORS

Section 2.1. General Powers and Number.

The property, business and affairs of the Corporation shall be managed under the direction of the Board as from time to time constituted. The Board shall consist of nine directors, but the number of directors may be increased to any number, not more than 15 directors, or decreased to any number, not fewer than three directors, by resolution of the Board, provided that no decrease in the number of directors shall shorten or terminate the term of any incumbent director. No director need be a shareholder.

Section 2.2. Nomination and Election of Directors.

At each annual meeting of shareholders, the shareholders entitled to vote shall elect the directors. No person shall be eligible for election as a director unless nominated in accordance with the procedures set forth in this Section 2.2. Nominations of persons for election to the Board may be made by the Board or any committee designated by the Board or by any shareholder entitled to vote for the election of directors at the applicable meeting of shareholders who complies with the notice procedures set forth in this Section 2.2. Such nominations, other than those made by the Board or any committee designated by the Board, may be made only if written notice of a shareholder’s intent to nominate one or more persons for election as directors at the applicable meeting of shareholders has been given, either by personal delivery or by United States certified mail, postage prepaid, to the secretary of the Corporation and received (i) not less than 120 days nor more than 150 days before the first anniversary of the date of the Corporation’s proxy statement in connection with the last annual meeting of shareholders, (ii) if no annual meeting was held in the previous year or the date of the applicable annual meeting has been changed by more than 30 days from the date of the previous year’s annual meeting, not less than 60 days before the date of the applicable annual meeting, or (iii) with respect to any special meeting of shareholders called for the election of directors, not later than the close of business on the seventh day following the date on which notice of such meeting is first given to shareholders. Each such shareholder’s notice shall set forth (a) as to the shareholder giving the notice, (i) the name and address, as they appear on the Corporation’s stock transfer books, of such shareholder, (ii) a representation that such shareholder is a shareholder of record and intends to appear in person or by proxy at such meeting to nominate the person or persons specified in the notice, (iii) the class and number of shares of stock of the Corporation beneficially owned by such shareholder and (iv) a description of all arrangements or understandings between such shareholder and each nominee and any other person or persons (naming such person or persons) pursuant to which the nomination or nominations are to be made by such shareholder; and (b) as to each person whom the shareholder proposes to nominate for election as a director, (i) the name, age, business address and, if known, residence address of such person, (ii) the principal occupation or employment of such person, (iii) the class and number of shares of stock of the Corporation that are beneficially owned by such person, (iv) any other information relating to such person that is required to be disclosed in solicitations of proxies for election of directors or is otherwise required by the rules and regulations of the Securities and Exchange Commission promulgated under the

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Exchange Act and (v) the written consent of such person to be named in the proxy statement as a nominee and to serve as a director if elected. The Secretary of the Corporation shall deliver each such shareholder’s notice that has been timely received to the Board or a committee designated by the Board for review. Notwithstanding the foregoing, at any time that Artal or any Artal Transferee owns a majority of the then outstanding Common Stock, notice by Artal or any Artal Transferee shall be timely and complete if delivered in writing or orally at least five business days prior to the date the Corporation mails its proxy statement in connection with such meeting of shareholders. Any person nominated for election as director by the Board or any committee designated by the Board shall, upon the request of the Board or such committee, furnish to the Secretary of the Corporation all such information pertaining to such person that is required to be set forth in a shareholder’s notice of nomination. The chairman of the meeting of shareholders shall, if the facts warrant, determine that a nomination was not made in accordance with the procedures prescribed by this Section 2.2. If the chairman should so determine, he shall so declare to the meeting and the defective nomination shall be disregarded. For purposes of these Bylaws, “Artal Transferee” shall mean a transferee from Artal or any other Artal Transferee that pursuant to a negotiated instrument of transfer or related agreement has been granted rights by Artal or such transferring Artal Transferee under the provisions of Article II of the Corporate Agreement, dated as of November 5, 2001, between the Corporation and Artal.

Section 2.3. Compensation.

Each director, in consideration of such director’s serving as such, shall be entitled to receive from the Corporation such amount per annum or such fees for attendance at Board and committee meetings, or both, in cash or other property, including securities of the Corporation, as the Board shall from time to time determine, together with reimbursements for the reasonable expenses incurred by such director in connection with the performance of such director’s duties. Nothing contained herein shall preclude any director from serving the Corporation, or any subsidiary or affiliated corporation, in any other capacity and receiving proper compensation therefor. If the Board adopts a resolution to that effect, any director may elect to defer all or any part of the annual and other fees hereinabove referred to for such period and on such terms and conditions as shall be permitted by such resolution.

Section 2.4. Place of Meetings.

The Board may hold its meetings at such place or places within or without the Commonwealth of Virginia as it may from time to time by resolution determine or as shall be specified or fixed in the respective notices or waivers of notice thereof.

Section 2.5. Organizational Meeting.

As soon as practicable after each annual election of directors, the newly constituted Board shall meet for the purposes of organization. At such organizational meeting, the newly constituted Board shall elect officers of the Corporation and transact such other business as shall come before the meeting. Any organizational meeting may be held at any time or place designated by the Board from time to time.

Section 2.6. Regular Meetings.

Regular meetings of the Board may be held at such time and place as may from time to time be specified in a resolution adopted by the Board then in effect, and, unless otherwise required by such resolution, or by law, notice of any such regular meeting need not be given.

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Section 2.7. Special Meetings.

Special meetings of the Board shall be held whenever called by the Chairman of the Board or by the Secretary at the request of any two or more of the directors then in office. Notice of a special meeting shall be mailed to each director, addressed to him at his residence or usual place of business, not later than the third day before the day on which such meeting is to be held, or shall be given by electronic transmission as previously consented to by the director to whom notice is given, or be delivered personally or by telephone, not later than the day before the day on which such meeting is to be held. Neither the business to be transacted at, nor the purpose of, any regular or special meeting of the Board need be specified in the notice of such meeting, unless required by the Articles.

Section 2.8. Quorum.

At each meeting of the Board the presence of a majority of the number of directors fixed in accordance with these Bylaws shall be necessary to constitute a quorum. The act of a majority of the directors present at a meeting at which a quorum shall be present shall be the act of the Board, except as may be otherwise provided by law or by these Bylaws. Any meeting of the Board may be adjourned by a majority vote of the directors present at such meeting. Notice of any adjourned meeting need not be given.

Section 2.9. Waivers of Notice of Meetings.

Notwithstanding anything in these Bylaws or in any resolution adopted by the Board to the contrary, notice of any meeting of the Board need not be given to any director if such notice shall be waived in writing signed by such director before, at or after the meeting, or if such director shall be present at the meeting. Any meeting of the Board shall be a legal meeting without any notice having been given or regardless of the giving of any notice or the adoption of any resolution in reference thereto, if every member of the Board shall be present thereat. Except as otherwise provided by law or these Bylaws, waivers of notice of any meeting of the Board need not contain any statement of the purpose of the meeting.

Section 2.10. Telephone Meetings.

Members of the Board or any committee may participate in a meeting of the Board or such committee by means of a conference telephone or other means of communication whereby all directors participating may simultaneously hear each other during the meeting, and participation by such means shall constitute presence in person at such meeting.

Section 2.11. Actions Without Meetings.

Any action that may be taken at a meeting of the Board or of a committee may be taken without a meeting if a consent in writing, setting forth the action, shall be signed, either before or after such action, by all of the directors or all of the members of the committee, as the case may be. Such consent shall have the same force and effect as a unanimous vote.

Section 2.12. Creation of Committees.

In addition to the executive committee authorized by Article III of these Bylaws, to the extent permitted by law, the Board may from time to time by resolution adopted by a majority of the number of directors then in office create such other committees of directors as the Board shall deem advisable and with such limited authority, functions and duties as the Board shall by resolution prescribe. The Board shall have the power to change the members of any such committee at any time, to fill vacancies, and to discharge any such committee, either with or without cause, at any time.

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ARTICLE III

EXECUTIVE COMMITTEE

Section 3.1. How Constituted and Powers.

The Board, by resolution adopted pursuant to Article II, Section 2.12 hereof, may designate one or more directors to constitute an executive committee, who shall serve at the pleasure of the Board. The executive committee, to the extent provided in such resolution and permitted by law, shall have and may exercise all of the authority of the Board.

Section 3.2. Organization, Etc.

The executive committee may choose a chairman and secretary. The executive committee shall keep a record of its acts and proceedings and report the same from time to time to the Board.

Section 3.3. Meetings.

Meetings of the executive committee may be called by any member of the committee. Notice of each such meeting, which need not specify the business to be transacted thereat, shall be mailed to each member of the committee, addressed to his or her residence or usual place of business, at least two days before the day on which the meeting is to be held or shall be given by electronic transmission as previously consented to by the director to whom notice is given, or be delivered personally or by telephone, not later than the day before the day on which the meeting is to be held.

Section 3.4. Quorum and Manner of Acting.

A majority of the executive committee shall constitute a quorum for transaction of business, and the act of a majority of those present at a meeting at which a quorum is present shall be the act of the executive committee. The members of the executive committee shall act only as a committee, and the individual members shall have no powers as such.

Section 3.5. Removal.

Any member of the executive committee may be removed, with or without cause, at any time, by the Board.

Section 3.6. Vacancies.

Any vacancy in the executive committee shall be filled by the Board.

ARTICLE IV

OFFICERS

Section 4.1. Number, Term, Election.

The officers of the Corporation shall be a Chairman of the Board, a President, a Secretary and a Treasurer. The Board may appoint such other officers and such assistant officers and agents with such powers and duties as the Board may find necessary or convenient to carry on the business of the

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Corporation. Such officers and assistant officers shall serve until their successors shall be elected and qualify, or as otherwise provided in these Bylaws. Any two or more offices may be held by the same person.

Section 4.2. Chairman of the Board.

The Chairman of the Board shall, subject to the control of the Board, have full authority and responsibility for directing the conduct of the business, affairs and operations of the Corporation and shall preside at all meetings of the Board and of the shareholders. The Chairman of the Board shall perform such other duties and exercise such other powers as may from time to time be prescribed by the Board.

Section 4.3. President.

The President shall have such powers and perform such duties as may from time to time be prescribed by the Board or by the Chairman of the Board. The President may sign and execute in the name of the Corporation deeds, contracts and other instruments, except in cases where the signing and the execution thereof shall be expressly delegated by the Board or by these Bylaws to some other officer or agent of the Corporation or shall be required by law otherwise to be signed or executed.

Section 4.4. Vice Presidents.

Each Vice President, if any, shall have such powers and perform such duties as may from time to time be prescribed by the Board, the Chairman of the Board, the President or any officer to whom the Chairman of the Board or the President may have delegated such authority. Any Vice President of the Corporation may sign and execute in the name of the Corporation deeds, contracts and other instruments, except in cases where the signing and execution thereof shall be expressly delegated by the Board or by these Bylaws to some other officer or agent of the Corporation or shall be required by law otherwise to be signed or executed.

Section 4.5. Treasurer.

The Treasurer shall have such powers and perform such duties as may from time to time be prescribed by the Board, the Chairman of the Board, the President or any officer to whom the Chairman of the Board or the President may have delegated such authority. If the Board shall so determine, the Treasurer shall give a bond for the faithful performance of the duties of the office of the Treasurer, in such sum as the Board may determine to be proper, the expense of which shall be borne by the Corporation. To such extent as the Board shall deem proper, the duties of the Treasurer may be performed by one or more assistants, to be appointed by the Board.

Section 4.6. Secretary.

The Secretary shall keep the minutes of meetings of shareholders, of the Board, and, when requested, of committees of the Board, and shall attend to the giving and serving of notices of all meetings thereof. The Secretary shall keep or cause to be kept such stock transfer and other books, showing the names of the shareholders of the Corporation, and all other particulars regarding them, as may be required by law. The Secretary shall also perform such other duties and exercise such other powers as may from time to time be prescribed by the Board, the Chairman of the Board, the President or any officer to whom the Chairman of the Board or the President may have delegated such authority. To such extent as the Board shall deem proper, the duties of the Secretary may be performed by one or more assistants, to be appointed by the Board.

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ARTICLE V

REMOVALS AND RESIGNATIONS

Section 5.1. Removal of Officers.

Any officer, assistant officer or agent of the Corporation may be removed at any time, either with or without cause, by the Board in its absolute discretion. Any officer or agent appointed otherwise than by the Board may be removed at any time, either with or without cause, by any officer having authority to appoint such an officer or agent, except as may be otherwise provided in these Bylaws. Any such removal shall be without prejudice to the recovery of damages for breach of the contract rights, if any, of the officer, assistant officer or agent removed. Election or appointment of an officer, assistant officer or agent shall not of itself create contract rights.

Section 5.2. Resignation.

Any director, officer or assistant officer of the Corporation may resign as such at any time by giving written notice of his resignation to the Board, the Chairman of the Board or the Secretary of the Corporation. Such resignation shall take effect at the time specified therein or, if no time is specified therein, at the time of delivery thereof, and, unless otherwise specified therein, the acceptance of such resignation shall not be necessary to make it effective.

Section 5.3. Vacancies.

Any vacancy in the office of any officer or assistant officer caused by death, resignation, removal or any other cause, may be filled by the Board for the unexpired portion of the term.

ARTICLE VI

CONTRACTS, LOANS, CHECKS, DRAFTS, DEPOSITS, ETC.

Section 6.1. Execution of Contracts.

Except as otherwise provided by law or by these Bylaws, the Board (i) may authorize any officer, employee or agent of the Corporation to execute and deliver any contract, agreement or other instrument in writing in the name and on behalf of the Corporation, and (ii) may authorize any officer, employee or agent of the Corporation so authorized by the Board to delegate such authority by written instrument to other officers, employees or agents of the Corporation. Any such authorization by the Board may be general or specific and shall be subject to such limitations and restrictions as may be imposed by the Board. Any such delegation of authority by an officer, employee or agent may be general or specific, may authorize re-delegation, and shall be subject to such limitations and restrictions as may be imposed in the written instrument of delegation by the person making such delegation.

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Section 6.2. Loans.

No loans shall be contracted on behalf of the Corporation and no negotiable paper shall be issued in its name unless authorized by the Board. When authorized by the Board, any officer, employee or agent of the Corporation may effect loans and advances at any time for the Corporation from any bank, trust company or other institution, or from any firm, corporation or individual, and for such loans and advances may make, execute and deliver promissory notes, bonds or other certificates or evidences of indebtedness of the Corporation and when so authorized may pledge, hypothecate or transfer any securities or other property of the Corporation as security for any such loans or advances. Such authority may be general or confined to specific instances.

Section 6.3. Checks, Drafts, etc.

All checks, drafts and other orders for the payment of money out of the funds of the Corporation and all notes or other evidences of indebtedness of the Corporation shall be signed on behalf of the Corporation in such manner as shall from time to time be determined by the Board.

Section 6.4. Deposits.

All funds of the Corporation not otherwise employed shall be deposited from time to time to the credit of the Corporation in such banks, trust companies or other depositories as the Board may select or as may be selected by the Treasurer or any other officer, employee or agent of the Corporation to whom such power may from time to time be delegated by the Board.

Section 6.5. Voting of Securities.

Unless otherwise provided by the Board, the President may from time to time appoint an attorney or attorneys, or agent or agents of the Corporation, in the name and on behalf of the Corporation, to cast the votes that the Corporation may be entitled to cast as the holder of stock or other securities in any other corporation or other entity, any of whose stock or other securities may be held by the Corporation, at meetings of the holders of the stock or other securities of such other corporation or other entity, or to consent in writing, in the name of the Corporation as such holder, to any action by such other corporation or other entity, and may instruct the person or persons so appointed as to the manner of casting such votes or giving such consent, and may execute or cause to be executed in the name and on behalf of the Corporation and under its corporate seal, or otherwise, all such written proxies or other instruments as such officer may deem necessary or proper in the premises.

ARTICLE VII

CAPITAL STOCK

Section 7.1. Shares.

Shares of the Corporation may but need not be represented by certificates.

When shares are represented by certificates, the Corporation shall issue such certificates in such form as shall be required by the Virginia Stock Corporation Act (the “VSCA”) and as determined by the Board, to every shareholder for the fully paid shares owned by such shareholder. Each certificate shall be signed by, or shall bear the facsimile signature of, the Chairman of the Board or the President and the Secretary or an Assistant Secretary of the Corporation and may bear the corporate seal of the Corporation or its facsimile. All certificates for the Corporation’s shares shall be consecutively numbered or otherwise identified.

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The name and address of the person to whom shares (whether or not represented by a certificate) are issued, with the number of shares and date of issue, shall be entered on the share transfer books of the Corporation. Such information may be stored or retained on discs, tapes, cards or any other approved storage device relating to data processing equipment; provided that such device is capable of reproducing all information contained therein in legible and understandable form, for inspection by shareholders or for any other corporate purpose.

When shares are not represented by certificates, then within a reasonable time after the issuance or transfer of such shares, the Corporation shall send the shareholder to whom such shares have been issued or transferred a written statement of the information required by the VSCA to be included on certificates.

Section 7.2. Stock Transfer Books and Transfer of Shares.

The Corporation, or its designated transfer agent or other agent, shall keep a book or set of books to be known as the stock transfer books of the Corporation, containing the name of each shareholder of record, together with such shareholder’s address and the number and class or series of shares held by such shareholder. Shares of stock of the Corporation shall be transferable on the stock books of the Corporation by the holder in person or by his attorney thereunto authorized by power of attorney duly executed and filed with the Secretary or the transfer agent, but, except as hereinafter provided in the case of loss, destruction or mutilation of certificates, no transfer of stock shall be entered until the previous certificate, if any, given for the same shall have been surrendered and canceled. Transfer of shares of the Corporation represented by certificates shall be made on the stock transfer books of the Corporation only upon surrender of the certificates for the shares sought to be transferred by the holder of record thereof or by such holder’s duly authorized agent, transferee or legal representative, who shall furnish proper evidence of authority to transfer with the Secretary of the Corporation or its designated transfer agent or other agent. All certificates surrendered for transfer shall be canceled before new certificates for the transferred shares shall be issued. Except as otherwise provided by law, no transfer of shares shall be valid as against the Corporation, its shareholders or creditors, for any purpose, until it shall have been entered in the stock records of the Corporation by an entry showing from and to whom transferred.

Section 7.3. Holder of Record.

Except as otherwise required by the VSCA, the Corporation may treat the person in whose name shares of stock of the Corporation (whether or not represented by a certificate) stand of record on its books or the books of any transfer agent or other agent designated by the Board as the absolute owner of the shares and the person exclusively entitled to receive notification and distributions, to vote, and to otherwise exercise the rights, powers and privileges of ownership of such shares.

Section 7.4. Record Date.

For the purpose of determining shareholders entitled to notice of or to vote at any meeting of shareholders or any adjournment thereof, or entitled to receive payment of any dividend, or in order to make a determination of shareholders for any other proper purpose, the Board may fix in advance a date as the record date for any such determination of shareholders, such date in any case to be not more than 70 days prior to the date on which the particular action, requiring such determination of shareholders, is to be taken. When a determination of shareholders entitled to vote at any meeting of shareholders has been made as provided in this section, such determination shall apply to any adjournment thereof unless the Board fixes a new record date, which it shall do if the meeting is adjourned to a date more than 120 days after the date fixed for the original meeting.

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Section 7.5. Lost, Destroyed or Mutilated Certificates.

In case of loss, destruction or mutilation of any certificate of stock, another may be issued in its place upon proof of such loss, destruction or mutilation and upon the giving of a bond of indemnity to the Corporation in such form and in such sum as the Board may direct; provided that a new certificate may be issued without requiring any bond when, in the judgment of the Board, it is proper so to do.

Section 7.6. Transfer Agent and Registrar; Regulations.

The Corporation may, if and whenever the Board so determines, maintain in the Commonwealth of Virginia or any other state of the United States, one or more transfer offices or agencies and also one or more registry offices which offices and agencies may establish rules and regulations for the issue, transfer and registration of certificates. No certificates for shares of stock of the Corporation in respect of which a transfer agent and registrar shall have been designated shall be valid unless countersigned by such transfer agent and registered by such registrar. The Board may also make such additional rules and regulations as it may deem expedient concerning the issue, transfer and registration of shares represented by certificates and shares without certificates.

ARTICLE VIII

SEAL

The seal of the Corporation shall be a flat-face circular die, of which there may be any number of counterparts of facsimiles, in such form as the Board shall from time to time adopt as the corporate seal of the Corporation.

EMERGENCY BYLAWS

Section 1. Definitions.

As used in these Emergency Bylaws, (a) the term “period of emergency” shall mean any period during which a quorum of the Board cannot readily be assembled because of some catastrophic event.

(b) the term “incapacitated” shall mean that the individual to whom such term is applied shall not have been determined to be dead but shall be missing or unable to discharge the responsibilities of his office; and

(c) the term “senior officer” shall mean the Chairman of the Board, the President, any Vice President, the Treasurer and the Secretary, and any other person who may have been so designated by the Board before the emergency.

Section 2. Applicability.

These Emergency Bylaws, as from time to time amended, shall be operative only during any period of emergency. To the extent not inconsistent with these Emergency Bylaws, all provisions of the regular Bylaws of the Corporation shall remain in effect during any period of emergency.

No officer, director or employee shall be liable for actions taken in good faith in accordance with these Emergency Bylaws.

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Section 3. Board of Directors.

(a) A meeting of the Board may be called by any director or senior officer of the Corporation. Notice of any meeting of the Board need be given only to such of the directors as it may be feasible to reach at the time and by such means as may be feasible at the time, including publication or radio, and at a time less than twenty-four hours before the meeting if deemed necessary by the person giving notice.

(b) At any meeting of the Board, three directors in attendance shall constitute a quorum. Any act of a majority of the directors present at a meeting at which a quorum shall be present shall be the act of the Board. If less than three directors should be present at a meeting of the Board, any senior officer of the Corporation in attendance at such meeting shall serve as a director for such meeting, selected in order of rank and within the same rank in order of seniority.

(c) In addition to the Board’s powers under the regular Bylaws of the Corporation to fill vacancies on the Board, the Board may elect any individual as a director to replace any director who may be incapacitated to serve until the latter ceases to be incapacitated or until the termination of the period of emergency, whichever first occurs. In considering officers of the Corporation for election to the Board, the rank and seniority of individual officers shall not be pertinent.

(d) The Board, during as well as before any such emergency, may change the principal office or designate several alternative offices or authorize the officers to do so.

Section 4. Appointment of Officers.

In addition to the Board’s powers under the regular Bylaws of the Corporation with respect to the election of officers, the Board may elect any individual as an officer to replace any officer who may be incapacitated to serve until the latter ceases to be incapacitated.

Section 5. Amendments.

These Emergency Bylaws shall be subject to repeal or change by further action of the Board or by action of the shareholders, except that no such repeal or change shall modify the provisions of the second paragraph of Section 2 with regard to action or inaction prior to the time of such repeal or change. Any such amendment of these Emergency Bylaws may make any further or different provision that may be practical and necessary for the circumstances of the emergency.

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Exhibit 99.1

For more information, contact:

Investors:

Corey Kinger

VP Investor Relations

212.601.7569

[email protected]

Media:

Nicole Penn

VP Corporate Communications

917.734.0802

[email protected]

WW Announces Second Quarter 2020 Results with Record Digital Subscribers

NEW YORK (August 4, 2020) – WW International, Inc. (NASDAQ: WW) today announced its results for the second quarter of fiscal 2020.

“We ended the quarter with our highest-ever Q2 subscriber base of 5.0 million, driven by a record level of digital subscribers, which were up 23% year-over-year. These milestones combined with the strength in digital revenues and our high margins are all testament to the work of our teams and talent around the world,” said Mindy Grossman, the Company’s President and CEO. “The impact of our accelerated digital transformation is evident in our second quarter results and will continue to be a key driver of our future growth and profitability. Creating exciting new coaching experiences, adding new digital features and producing creative content that is insightful, interactive and engaging will greatly increase our ability to attract new members to WW, retain them longer, help them achieve their weight loss and wellness goals, and deliver on our mission to democratize wellness for all.”

“Our second quarter results demonstrate the benefits of our digital focus with strength in digital revenues, ecommerce, and gross margin,” said Nick Hotchkin, the Company’s CFO, Operating Officer, North America and President, Emerging Markets. “While our Q2 2020 GAAP EPS was $0.20, excluding one-time charges in the quarter, adjusted EPS was $0.67, demonstrating strong performance despite the COVID-19 environment. We are nimbly managing our studio cost structure and are on-track to deliver on our $100 million cost-savings initiative, while maintaining strong liquidity and financial flexibility.”

Q2 2020 Consolidated Results

Note: Totals may not sum due to rounding.

Q2 2020 Business and Financial Highlights

Other Items

Second Quarter 2020 Conference Call and Webcast

The Company has scheduled a conference call today at 5:00 p.m. ET. During the conference call, Mindy Grossman, President and Chief Executive Officer, and Nicholas Hotchkin, Chief Financial Officer, Operating Officer, North America & President, Emerging Markets, will discuss the second quarter of fiscal 2020 results and answer questions from the investment community.

The live webcast of the conference call will be available on the Company’s corporate website, corporate.ww.com, in the Investors section under Presentations and Events. Supplemental investor materials will also be available in the same location prior to the start of the webcast. A replay of the webcast will be available on this site for approximately 90 days.

Statement regarding Non-GAAP Financial Measures

The following provides information regarding non-GAAP financial measures used in this earnings release and today’s scheduled conference call:

To supplement the Company’s consolidated results presented in accordance with accounting principles generally accepted in the United States (“GAAP”), the Company has disclosed non-GAAP financial measures of operating results that exclude or adjust certain items. Gross profit, gross profit margin, operating income, operating income margin, and earnings per fully diluted share are discussed both as reported (on a GAAP basis)

and, with respect to the second quarter of fiscal 2020, as adjusted (on a non-GAAP basis), to exclude the impact of the one-time stock compensation expense associated with the previously disclosed option granted to Ms. Winfrey in connection with the Company extending its partnership with Ms. Winfrey and charges associated with the Company’s previously disclosed 2020 organizational restructuring plan, as applicable. The Company also presents in the attachments to this release the non-GAAP financial measures earnings before interest, taxes, depreciation, amortization and stock-based compensation (“EBITDAS”), earnings before interest, taxes, depreciation, amortization, stock-based compensation, 2020 restructuring charges and goodwill impairment (“Adjusted EBITDAS”), net debt, and a net debt to Adjusted EBITDAS ratio. In addition, the Company presents certain of its financial results on a constant currency basis in addition to GAAP results. Constant currency information compares results between periods as if exchange rates had remained constant period-over-period. The Company calculates constant currency by calculating current-year results using prior-year foreign currency exchange rates.

Management believes these non-GAAP financial measures provide useful supplemental information for its and investors’ evaluation of the Company’s business performance and are useful for period-over-period comparisons of the performance of the Company’s business. While management believes that these non-GAAP financial measures are useful in evaluating the Company’s business, this information should be considered as supplemental in nature and should not be considered in isolation or as a substitute for the related financial information prepared in accordance with GAAP. In addition, these non-GAAP financial measures may not be the same as similarly entitled measures reported by other companies. See “Reconciliation of Non-GAAP Financial Measures” attached to this release and reconciliations, if any, included elsewhere in this release for a reconciliation of the non-GAAP financial measures to the most directly comparable GAAP measures.

About WW International, Inc.

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

This news release and any attachments include “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, revenue and earnings guidance and any statements about the Company’s plans, strategies and prospects and the impact of the COVID-19 virus. The Company generally uses the words “may,” “will,” “could,” “expect,” “anticipate,” “believe,” “estimate,” “plan,” “intend,” “aim” and similar expressions in this news release and any attachments 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: the impact of the global outbreak of the COVID-19 virus on the Company’s business and liquidity and on the business environment and markets in which the Company operates; 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, including the Company’s strategic digital transformation; 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, debt service obligations and debt covenants, and the Company’s exposure to variable rate indebtedness; 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 data security breaches or privacy concerns, including the costs of compliance with evolving privacy laws and regulations; 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, social, intellectual property 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).

WW INTERNATIONAL, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(IN THOUSANDS)

UNAUDITED

WW INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF NET INCOME

(IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

UNAUDITED

Note: Totals may not sum due to rounding.

WW INTERNATIONAL, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF NET INCOME

(IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

UNAUDITED

Note: Totals may not sum due to rounding.

WW INTERNATIONAL, INC. AND SUBSIDIARIES

OPERATIONAL STATISTICS

(IN THOUSANDS, EXCEPT PERCENTAGES)

UNAUDITED

Note: Totals may not sum due to rounding.

WW INTERNATIONAL, INC. AND SUBSIDIARIES

OPERATIONAL STATISTICS

(IN THOUSANDS, EXCEPT PERCENTAGES)

UNAUDITED

Note: Totals may not sum due to rounding.

WW INTERNATIONAL, INC. AND SUBSIDIARIES

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

(IN THOUSANDS, EXCEPT PERCENTAGES)

UNAUDITED

Note: Totals may not sum due to rounding.

WW INTERNATIONAL, INC. AND SUBSIDIARIES

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

(IN THOUSANDS, EXCEPT PERCENTAGES)

UNAUDITED

Note: Totals may not sum due to rounding.

WW INTERNATIONAL, INC. AND SUBSIDIARIES

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

(IN THOUSANDS, EXCEPT PERCENTAGES)

UNAUDITED

Note: Totals may not sum due to rounding.

WW INTERNATIONAL, INC. AND SUBSIDIARIES

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

(IN THOUSANDS, EXCEPT PERCENTAGES)

UNAUDITED

Note: Totals may not sum due to rounding.

WW INTERNATIONAL, INC. AND SUBSIDIARIES

RECONCILIATION OF NON-GAAP FINANCIAL MEASURES

(IN THOUSANDS)

UNAUDITED