Event Details

To participate in our virtual Annual Meeting, including to vote, ask questions and to view the list of registered stockholders as of the record date during the meeting, visit www.virtualshareholdermeeting.com/CHPT2022 with your 16-digit control number included in the Notice of Internet Availability of Proxy Materials (the “Notice”), on your proxy card, or in the instructions that accompanied your proxy materials. If you are a beneficial owner of shares registered in the name of your broker, bank or other agent, follow the instructions from your broker or bank.

If you are a stockholder of record, as of the record date May 20, 2022, you may vote your shares at the Annual Meeting by following the instructions provided on the Notice to log in to www.virtualshareholdermeeting.com/CHPT2022.

If you are a beneficial owner of shares registered in the name of your broker, bank or other agent, you must obtain a valid proxy from your broker, bank or other agent to vote online during the Annual Meeting. Follow the instructions from your broker or bank included with these proxy materials, or contact your broker or bank to request a proxy form.

Whether or not you plan to attend the Annual Meeting, we urge you to vote by proxy to ensure your vote is counted. You may still attend and vote at the Annual Meeting even if you have already voted by proxy.

If you are a stockholder of record, you may vote by proxy over the telephone, vote by proxy through the Internet or vote by proxy using a proxy card that you may request or that we may elect to deliver at a later time

• To vote over the telephone, dial toll-free 1-800-690-6903 using a touch-tone phone and follow the recorded instructions. You will be asked to provide the control number from the Notice. Your vote must be received by 11:59 p.m. Eastern Time on July 11, 2022 to be counted.
• To vote through the Internet, go to  www.proxyvote.com to complete an electronic proxy card. You will be asked to provide the control number from your Notice. Your vote must be received by 11:59 p.m. Eastern Time on July 11, 2022 to be counted.
• To vote using the printed proxy card that may be delivered to you, simply complete, sign and date the proxy card and return it promptly in the envelope provided. If you return your signed proxy card to us before the Annual Meeting, we will vote your shares as you instruct. If you are a beneficial owner of shares registered in the name of your broker, bank or other agent, you should have received a Notice containing voting instructions from that organization rather than from us. Simply follow the voting instructions in the Notice to ensure that your vote is counted.

If you encounter any difficulties accessing the Annual Meeting during the check-in or meeting time, please call the technical support number that will be posted on the Annual Meeting log-in page.

Pursuant to rules adopted by the Securities and Exchange Commission, we have elected to provide access to our proxy materials over the Internet. Accordingly, we have sent you a Notice of Internet Availability of Proxy Materials because the Board is soliciting your proxy to vote at the 2022 Annual Meeting of Stockholders, including at any adjournments or postponements of the meeting. All stockholders will have the ability to access the proxy materials on the website referred to in the Notice or request to receive a printed set of the proxy materials. Instructions on how to access the proxy materials over the internet or to request a printed copy may be found in the Notice.

The 2022 Proxy Statement and 2022 Annual Report are available at www.ProxyVote.com.