Stifel Financial Corp. Announces a Three-for-Two Stock Split ST. LOUIS, March 7, 2011 – Stifel Financial Corp. (NYSE: SF) today announced that its Board of Directors has approved a three-for-two stock split of the Company’s common stock, which will be made in the form of a 50 percent stock dividend. Shareholders of record at the close of business on March 22, 2011 will receive one additional share of Stifel Financial common stock for every two shares owned. These additional shares will be distributed beginning April 5, 2011. Cash will be distributed in lieu of fractional shares based on the closing price on the record date. The Company has approximately 35.9 million shares outstanding and, after the split, the Company will have approximately 53.9 million shares outstanding. “This action recognizes our company’s strong market performance, continuing growth prospects, and our commitment to maintaining a market price for our shares that is attractive to investors. Additionally, today’s announcement reflects our Board’s confidence in our ability to drive long-term shareholder value by focusing on the fundamentals of our company,” commented Ronald J. Kruszewski, Chairman, President and Chief Executive Officer of Stifel Financial.