SEC Form DEFA14A filed by Piper Sandler Companies

Your Vote Counts! *Please check the meeting materials for any special requirements for meeting attendance. Smartphone users Point your camera here and vote without entering a control number For complete information and to vote, visit www.ProxyVote.com Control # V67851-P28185 PIPER SANDLER COMPANIES You invested in PIPER SANDLER COMPANIES and it’s time to vote! You have the right to vote on proposals being presented at the Annual Meeting. This is an important notice regarding the availability of proxy materials for the shareholder meeting to be held on May 22, 2025. Vote Virtually at the Meeting* May 22, 2025 2:00 p.m. (Central Time) Virtually at: www.virtualshareholdermeeting.com/PIPR2025 Get informed before you vote View the Notice, Proxy Statement and Annual Report online OR you can receive a free paper or email copy of the material(s) by requesting a copy prior to May 8, 2025. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to [email protected]. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. PIPER SANDLER COMPANIES C/O BROADRIDGE P.O. BOX 1342 BRENTWOOD, NY 11717 2025 Annual Meeting For shares held directly, vote by May 21, 2025 11:59 PM ET. For shares held in a retirement plan, vote by May 19, 2025 11:59 PM ET.

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 V67852-P28185 THIS IS NOT A VOTABLE BALLOT This is an overview of the proposals being presented at the upcoming shareholder meeting. Please follow the instructions on the reverse side to vote these important matters. 1. Election of Directors Nominees: 1a. Chad R. Abraham For 1b. Jonathan J. Doyle For 1c. Ann C. Gallo For 1d. Victoria M. Holt For 1e. Robbin Mitchell For 1f. Thomas S. Schreier For 1g. Sherry M. Smith For 1h. Philip E. Soran For 1i. Brian R. Sterling For 1j. Scott C. Taylor For 2. Ratification of the selection of Ernst & Young LLP as the independent auditor for the fiscal year ending December 31, 2025. For 3. An advisory (non-binding) vote to approve the compensation of the officers disclosed in the enclosed proxy statement, or say-on-pay vote. For NOTE: To consider and act on such other business as may properly come before the meeting or any adjournment or postponement thereof.