Company: SFB
Filing Date: 2025-04-25
Form Type: DEF 14A
Source: 0001193125-25-094691
Chunk: 0

Company: STIFEL FINANCIAL CORP
Filing Date: 2025-04-25
Form: DEF 14A
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box:

| ☐ |     | Preliminary Proxy Statement                                                     |
| ☐ |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☒ |     | Definitive Proxy Statement                                                      |
| ☐ |     | Definitive Additional Materials                                                 |
| ☐ |     | Soliciting Material Pursuant to Rule 240.14a-12                                 |

Stifel Financial Corp. (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box):

| ☒ |     | No fee required                                                                                     |
| ☐ |     | Fee paid previously with preliminary materials.                                                     |
| ☐ |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |

LETTER FROM OUR CHAIRMAN & CEO

| 501 North Broadway  St. Louis, Missouri 63102 |

April 25, 2025 Fellow Shareholders: We cordially invite you to participate in the 2025 Annual Meeting of Shareholders of Stifel Financial Corp., which will be held virtually on Wednesday, June 4, 2025 at 9:30 a.m., Central Time . We hope that you will be able to participate. We regret that a valued member of our Board of Directors, Danny Ludeman, passed away in March. Danny’s career spanned decades, but his passion to serve went beyond the corporate world: most notably, his leadership at Concordance Academy of Leadership, which he founded to support individuals returning from incarceration. The example of Danny’s vision, compassion, and unselfish commitment to others is a continuing inspiration to all of us at Stifel who had the privilege to know him. Enclosed you will find a notice setting forth the business expected to come before the meeting and instructions for accessing this Proxy Statement and our Annual Report for the year ended December 31, 2024 on the Internet and for submitting proxy votes online. The