CARLISLE COMPANIES INCORPORATED ANNUAL MEETING FOR HOLDERS AS OF MARCH 7, 2018 TO BE HELD ON MAY 2, 2018 Your vote is important. Thank you for voting. TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: E40896-P04007 Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting. The following materials are available at www.proxyvote.com: The Notice of 2018 Annual Meeting of Shareholders, Proxy Statement, 2017 Annual Report and Form 10-K ! The Board of Directors recommends you vote FOR the following proposals: PLEASE "X" HERE ONLY IF YOU PLAN TO ATTEND THE MEETING AND VOTE THESE SHARES IN PERSON 1. To elect the three directors nominated by the Board of Directors. Nominees: For Against Abstain ! ! ! ! ! ! ! ! ! 1a. James D. Frias 1b. Corrine D. Ricard 1c. Lawrence A. Sala For Against Abstain ! ! ! ! ! ! 2. To ratify the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for fiscal 2018. 3. To approve, on an advisory basis, the Company's named executive officer compensation in fiscal 2017. 4. To transact any other business properly brought before the meeting. DESCRIPTION OF VOTING RIGHTS In accordance with the Company’s Restated Certificate of Incorporation, the number of votes each shareholder will be entitled to cast at the annual meeting will depend on when the shares were acquired and whether there has been a change in beneficial ownership since the date of acquisition. Shares acquired AFTER March 6, 2014 are entitled to one vote per share at the 2018 annual meeting. Shares are entitled to 5 votes per share at the 2018 annual meeting if they were acquired BEFORE March 7, 2014 and have been held continuously by the same beneficial owner since they were acquired. Please confirm below the number of shares beneficially owned for each category as of March 7, 2018: Number of shares acquired BEFORE March 7, 2014 and entitled to 5 votes per share. Number of shares acquired AFTER March 6, 2014 and entitled to 1 vote per share. If you do not provide confirmation, all shares will be entitled to 1 vote per share. The Board of Directors reserves the right to require evidence to support this confirmation. Signature [PLEASE SIGN WITHIN BOX] Date Read the Proxy Statement and have the voting instruction form below at hand. Please note that the telephone and Internet voting turns off at 11:59 p.m. ET the night before the meeting or cut-off date. Vote by Internet: www.proxyvote.com Vote by Phone: 1-800-454-8683 Vote by Mail: Use the envelope enclosed

*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 2, 2018. CARLISLE COMPANIES INCORPORATED You are receiving this communication because you hold shares in the company named above. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of CARLISLE COMPANIES INCORPORATED 16430 NORTH SCOTTSDALE ROAD, SUITE 400 SCOTTSDALE, AZ 85254 ATTN: ROBERT M. ROCHE the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. proxy materials and voting instructions. E40897-P03758 See the reverse side of this notice to obtain Meeting Information Meeting Type:Annual Meeting For holders as of:March 7, 2018 Date: May 2, 2018Time: 8:00 AM EDT Location: Accella Performance Materials 100 Enterprise Drive Cartersville, GA 30120

Before You Vote How to Access the Proxy Materials Have the information that is printed in the box marked by the arrow XXXX XXXX XXXX XXXX (located on the by the arrow XXXX XXXX XXXX XXXX (located on the following page) in the subject line. How To Vote Please Choose One of the Following Voting Methods marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) available and follow the instructions. E40898-P03758 Vote In Person: Many shareholder meetings have attendance requirements including,but not limited to,the possession of an attendance ticket issued by the entity holding the meeting.Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.You may obtain directions to the 2018Annual Meeting in order to vote in person by visiting the Company's website at: www.carlisle.com/2018proxymaterials. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. Proxy Materials Available to VIEW or RECEIVE: Notice of 2018 Annual Meeting of ShareholdersProxy Statement2017 Annual ReportForm 10-K How to View Online: following page) and visit: www.proxyvote .com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET:www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*:[email protected] * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before April 18, 2018 to facilitate timely delivery.

The Board of Directors recommends you vote FOR the following proposals: 1. To elect the three directors nominated by the Board of Directors. Nominees: 1a. James D. Frias 1b. Corrine D. Ricard 1c. Lawrence A. Sala 2. To ratify the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for fiscal 2018. 3. To approve, on an advisory basis, the Company's named executive officer compensation in fiscal 2017. 4. To transact any other business properly brought before the meeting. E40899-P03758 Voting Items

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