你的投票很重要！ CHECKPOINT 療法有限公司 2024 年年會 在美國東部時間 2024 年 5 月 12 日晚上 11:59 之前投票 在會議上進行虛擬投票* 美國東部時間 2024 年 5 月 13 日上午 10:00 虛擬在： www.virtualshareholdermeeting.com/CKPT2024 *請查看會議材料以瞭解對會議出席的任何特殊要求。 智能手機用户 將你的攝像頭對準這裏， 無需輸入 控制號碼即可投票 要獲得完整信息並進行投票，請訪問 www.proxyVote.com Control # V42462-P10795 CHECKPOINT THERAPEUTICS, INC. 收件人：GARRETT GRAY 95 SAWYER ROAD，110 套房 110 號馬薩諸塞州沃爾瑟姆 02453 你投資了 CHECKPOINT THERAPEUTICS, INC.，現在是投票的時候了！ 您有權對年會上提出的提案進行投票。這是關於將於2024年5月13日虛擬舉行的股東大會 代理材料可用性的重要通知。 在投票前獲取信息 在 www.proxyVote.com 上在線查看通知和委託書以及年度報告，或者您可以在 2024 年 4 月 29 日之前申請獲得 材料的免費紙質或電子郵件副本。如果你想索取本次和/或未來股東 會議的材料副本，你可以（1）訪問www.proxyVote.com，（2）致電1-800-579-1639或（3）發送電子郵件至 sendmaterial@proxyvote.com。如果發送 電子郵件，請在主題行中註明您的控制號碼（如下所示）。除非您提出要求，否則您不會收到論文 或電子郵件副本。

THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming stockholder meeting. Please follow the instructions on the reverse side to vote these important matters. Vote at www.ProxyVote.com Prefer to receive an email instead? While voting on www.ProxyVote.com, be sure to click “Delivery Settings”. Voting Items Board Recommends V42463-P10795 1. Election of Directors For Nominees: 01) Michael S. Weiss 02) Christian Bechon 03) Neil Herskowitz 04) James F. Oliviero, III 05) Lindsay A. Rosenwald, M.D. 06) Barry Salzman 07) Amit Sharma, M.D. 2. The ratification of appointment of KPMG LLP as independent registered public accounting firm for the year ending December 31, 2024. For 3. Approval of an amendment to our Amended and Restated Certificate of Incorporation, as amended, to increase our authorized shares of common stock by 95,000,000 shares from 80,000,000 to 175,000,000. For 4. Approval of an amendment to our Amended and Restated 2015 Incentive Plan, as amended, to increase the shares of common stock available for issuance thereunder by 12,000,000 shares from 6,000,000 to 18,000,000. For 5. The advisory approval on compensation of our named executive officers as disclosed in our proxy statement. For 6. To recommend, by advisory vote, the frequency of future advisory votes on the compensation of our named executive officers. 3 Years NOTE: Such other business as may properly come before the meeting or any adjournment thereof.