Alamos Gold Inc. — Proxy Solicitation & Information Statement 2021

Mar 30, 2021

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----- Start of picture text ----- ACHIEVE LIFE SCIENCES, INC. 1040 WEST GEORGIA STREET SUITE 1030 VANCOUVER, BC V6E 4H1 VOTE BY INTERNET Before The Meeting - Go to www.proxyvote.com Use the Internet to transmit your voting instructions and for elect ronic delivery of information. Vote by 11:59 P.M. Eastern Time on May 10, 2021. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form. During The Meeting—Go to https://www.webcast er4.com/Webcast/P age/2636/40168 You may attend the meeting via the Internet and vote during the meeting. Have the information that is printed in the box marked by the arrow available and follow the instructions. VOTE BY P HONE—1-800-690-6903 Use any touch-tone telephone to transmit your voting instructions. Vote by 11: 59 P.M. Eastern Time on May 10, 2021. Have your proxy card in hand when you call and then follow the instructions. VOTE BY MAIL Mark, si gn and date your proxy card and return it in the postage-paid envel ope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717. TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: D41487-P48663 KEEP THIS PORTION FOR YOUR RECORDS THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. DETACH AND RETURN THIS PORTION ONLY ACHIEVE LIFE SCIENCES, INC. For Wit hhold F or All Al l All Except To withhold authority to vote for any individual nominee(s), mark “For All Except” and write the number(s) of the nominee(s) on the line below. The Board of Directors recommends you vote FOR the following: 1. Election of Directors Nominees: 01) John Bencich 05) Martin Mattingly 02) Cindy Jacobs 06) Jay Moyes 03) Donald Joseph 07) Richard Stewart 04) Bridget Martell The Board of Directors recommends you vote F OR the following proposal. For Against Abst ain 2. To ratify the appointment of PricewaterhouseCoopers LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2021. NOTE: In t heir discretion, the proxies may transact such other business as properly comes before the meeting or any adjournment thereof. NOTE: P lease sign exactly as your name or names appear(s) on this Proxy. When shares are held jointly, each holder should sign. When signing as executor, administrator, attorney,trustee or guardian, please give full title as such. If the signer is a corporation, please sign full corporat e name by duly authorized officer, giving full title as such. If signer is a part nership, please sign in partnership name by authorized person and state your titl e. P LEASE COMPLETE, SIGN, DATE AND RETURN THE PROXY CARD PROMP TLY USING THE ENCLOSED ENVELOPE. Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date----- End of picture text -----

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----- Start of picture text ----- Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting to be Held on May 11, 2021: The Notice and Proxy Stat ement and Form 10-K are available at www.proxyvote.com. D41488-P48663 ACHIEVE LIFE SCIENCES, INC. Annual Meeting of Stockholders May 11, 2021 This proxy is solicited by the Board of Directors The undersigned hereby nominates and appoints John Benci ch and Richard Stewart, and each of them individually, the attorney, agent and proxy of the undersigned, with ful l power of substi tution, to vote all stock of ACHIEVE LIFE SCIENCES, INC. which the undersigned is entitled to represent and vote at the Annual Meeting of Stockholders to be held via webcast at https:/ /www.webcaster4.com/Webcast/Page/2636/40168, on May 11, 2021 at 12:00 p.m. local time, and at any and all adjournments or postponements thereof, as fully as if the undersigned were present and voting on the matters listed on the reverse side. Alt ernatively, you may access the live Annual Meeting by dialing 877-407-8133 (U.S. & Canada) or 201-689-8040 (International ). This proxy, when properly executed, will be voted in the manner directed herein. If no such direction is made, this proxy will be voted in accordance with the Board of Directors’ recommendations. (Continued and to be signed on reverse side)----- End of picture text -----