2 - Arvinas, Inc. Nonstatutory Stock Option Agreement Incorporated Terms and Conditions 1. Grant of Option. This agreement evidences the grant by the Company, on the grant date (the “Grant Date”) set forth in the Notice of Grant that forms part of...

Exhibit 99.3 ARVINAS, INC. NONSTATUTORY STOCK OPTION AGREEMENT Inducement Grant Arvinas, Inc. (the “Company”) hereby grants the following stock option. The terms and conditions attached hereto are also a part hereof. Notice of Grant Name of optionee (the “Participant”): Grant Date: Number of shares of the Company’s Common Stock subject to this option (“Shares”): Option exercise price per Share: $ Vesting Start Date: Final Exercise Date: Vesting Schedule: Vesting Date: Number of Options that Vest: All vesting is dependent on the Participant remaining an Eligible Participant, as provided herein. This option satisfies in full all commitments that the Company has to the Participant with respect to the issuance of stock, stock options or other equity securities. Arvinas, Inc. Signature of Participant Street Address By: Name of Officer: Title: City/State/Zip Code

- 2 - Arvinas, Inc. Nonstatutory Stock Option Agreement Incorporated Terms and Conditions 1. Grant of Option. This agreement evidences the grant by the Company, on the grant date (the “Grant Date”) set forth in the Notice of Grant that forms part of this agreement (the “Notice of Grant”) to the Participant of an option to purchase, in whole or in part, on the terms provided herein, the number of Shares set forth in the Notice of Grant of common stock, $0.001 par value per share, of the Company (“Common Stock”), at the exercise price per Share set forth in the Notice of Grant. Unless earlier terminated, this option shall expire at 5:00 p.m., Eastern time, on the Final Exercise Date set forth in the Notice of Grant (the “Final Exercise Date”). The option evidenced by this agreement is being granted to the Participant pursuant to the inducement grant exception under Nasdaq Stock Market Rule 5635(c)(4), and not pursuant to the Company’s 2018 Stock Incentive Plan (as amended from time to time, the “Plan”) or any other equity incentive plan of the Company, as an inducement that is material to the Participant’s entering into employment with the Company. It is intended that the option evidenced by this agreement shall not be an incentive stock option as defined in Section 422 of the Internal Revenue Code of 1986, as amended, and any regulations promulgated thereunder (the “Code”). Except as otherwise indicated by the context, the term “Participant”, as used in this option, shall be deemed to include any person who acquires the right to exercise this option validly under its terms. 2. Vesting Schedule. This option will become exercisable (“vest”) in accordance with the vesting schedule set forth in the Notice of Grant. The right of exercise shall be cumulative so that to the extent the option is not exercised in any period to the maximum extent permissible it shall continue to be exercisable, in whole or in part, with respect to all Shares for which it is vested until the earlier of the Final Exercise Date or the termination of this option under Section 3 hereof. 3. Exercise of Option. (a) Form of Exercise. Each election to exercise this option shall be in writing, in the form of the Stock Option Exercise Notice attached as Annex A, signed by the Participant, and received by the Company at its principal office, accompanied by this agreement, or in such other form (which may be electronic) as is approved by the Company, together with payment in full as follows: (1) in cash or by check, payable to the order of the Company;

- 8 - approved by) the Board), or (iv) take any other action that constitutes a “repricing” within the meaning of the rules of the Nasdaq Stock Market or any other exchange or marketplace on which the Company stock is listed or traded. (e) Acceleration. The Board may at any time provide that this option shall become immediately exercisable in whole or in part, free of some or all restrictions or conditions, or otherwise realizable in whole or in part, as the case may be. (f) Conditions on Delivery of Stock. The Company will not be obligated to deliver any shares of Common Stock pursuant to this agreement until (i) all conditions of this agreement have been met or removed to the satisfaction of the Company, (ii) in the opinion of the Company’s counsel, all other legal matters in connection with the issuance and delivery of such shares have been satisfied, including any applicable securities laws and regulations and any applicable stock exchange or stock market rules and regulations, and (iii) the Participant has executed and delivered to the Company such representations or agreements as the Company may consider appropriate to satisfy the requirements of any applicable laws, rules or regulations. (g) Administration by Board. The Board will administer this agreement and may construe and interpret the terms hereof. The Board may correct any defect, supply any omission or reconcile any inconsistency in this option in the manner and to the extent it shall deem expedient and it shall be the sole and final judge of such expediency. All decisions by the Board shall be made in the Board’s sole discretion and shall be final and binding on the Participant. No individual acting as a director, officer, employee or agent of the Company will be liable to the Participant or any other person for any claim, loss, liability, or expense incurred in connection with this option, nor will such individual be personally liable with respect to this option because of any contract or other instrument he or she executes in his or her capacity as a director, officer, employee or agent of the Company. The Company will indemnify and hold harmless each director, officer, employee or agent of the Company to whom any duty or power relating to the administration or interpretation of this option has been or will be delegated, against any cost or expense (including attorneys’ fees) or liability (including any sum paid in settlement of a claim with the Board’s approval) arising out of any act or omission to act concerning the option unless arising out of such person’s own fraud or bad faith. (h) Appointment of Committees. To the extent permitted by applicable law, the Board may delegate any or all of its powers hereunder to one or more committees or subcommittees of the Board (a “Committee”). All references herein to the “Board” shall mean the Board or a Committee to the extent that the Board’s powers or authority hereunder have been delegated to such Committee. (i) Entire Agreement. This agreement constitutes the entire agreement between the parties, and supersedes all prior agreements and understandings, relating to the subject matter hereof. (j) Governing Law. This agreement shall be governed by and interpreted in accordance with the laws of the State of Delaware, excluding choice-of-law principles of the law of such state that would require the application of the laws of a jurisdiction other than the State of Delaware.

- 9 - ANNEX A Arvinas, Inc. Stock Option Exercise Notice Arvinas, Inc. [Address] [Address] Dear Sir or Madam: I, _____________________ (the “Participant”), hereby irrevocably exercise the right to purchase shares of the Common Stock, $0.001 par value per share (the “Shares”), of Arvinas, Inc. (the “Company”) at $___ per share pursuant to a stock option agreement with the Company dated (the “Option Agreement”). Enclosed herewith is a payment of $ , the aggregate purchase price for the Shares. The certificate for the Shares should be registered in my name as it appears below or, if so indicated below, jointly in my name and the name of the person designated below, with right of survivorship. Dated: Signature Print Name: Address: Name and address of persons in whose name the Shares are to be jointly registered (if applicable):