SF: 10-Q financial filing

10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2026 OR ☐ Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number: 001-09305 STIFEL FINANCIAL CORP . (Exact name of registrant as specified in its charter) Delaware 43-1273600 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 501 North Broadway , St. Louis , Missouri 63102-2188 (Address of principal executive offices and zip code) ( 314 ) 342-2000 (Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Title of Each Class/ Trading Symbol Name of Each Exchange on Which Registered Shares or principal amount outstanding - October 30, 2026 Common Stock, $0.15 par value per share ( SF ) New York Stock Exchange 149,236,808 Depository Shares, each representing 1/1,000th interest in a share of 6.25% Non-Cumulative Preferred Stock, Series B ( SF-PB ) New York Stock Exchange 6,400 Depository Shares, each representing 1/1,000th interest in a share of 6.125% Non-Cumulative Preferred Stock, Series C ( SF-PC ) New York Stock Exchange 9,000 Depository Shares, each representing 1/1,000th interest in a share of 4.50% Non-Cumulative Preferred Stock, Series D ( SF-PD ) New York Stock Exchange 12,000 5.20% Senior Notes due 2047 ( SFB ) New York Stock Exchange $ 225,000,000 Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 (“the Exchange Act”) during the preceding 1