NEW YORK–February 28, 2012 — (BUSINESS WIRE) –Duff & Phelps Corporation (NYSE: DUF), a leading independent financial advisory and investment banking firm, today announced the pricing of a public offering of 4,500,000 shares of its Class A common stock at a price of $13.75 per share. Duff & Phelps is offering 3,201,922 shares in the offering and Shinsei Bank, Limited is offering an additional 1,298,078 shares as a selling stockholder. The Company and the selling stockholder have granted the underwriter a 30-day option to purchase up to an additional 675,000 shares. Goldman, Sachs & Co. is acting as the sole underwriter for the offering.

Duff & Phelps intends to use the net proceeds it receives from the offering to redeem 3,201,922 units in Duff & Phelps Acquisitions, LLC held by some of its existing unit holders, including approximately one third of the units owned by each of Vestar Capital Partners and its affiliates and Lovell Minnick Partners LLC and its affiliates and units owned by certain of the Company’s executive officers. In addition, Duff & Phelps intends to use cash from its balance sheet and borrowings under its revolving credit facility to redeem an additional 700,000 units held by such unitholders.

The offering is being made pursuant to a shelf registration statement filed with the Securities and Exchange Commission, which became effective on October 26, 2009. Copies of the prospectus supplement and accompanying base prospectus related to this offering may be obtained from Goldman, Sachs & Co., Attention: Prospectus Department, 200 West Street, New York, NY 10282, telephone: 866-471-2526, email: [email protected], or by visiting EDGAR on the Securities and Exchange Commission Web site at www.sec.gov.

This announcement shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any offer or sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. The offering may be made only by means of a prospectus and a related prospectus supplement, which have or will be filed with the Securities and Exchange Commission.

About Duff & Phelps

As a leading global financial advisory and investment banking firm, Duff & Phelps balances analytical skills, deep market insight and independence to help clients make sound decisions. The firm provides expertise in the areas of valuation, transactions, financial restructuring, alternative assets, disputes and taxation, with more than 1,000 employees serving clients from offices in North America, Europe and Asia. Investment banking services in the United States are provided by Duff & Phelps Securities, LLC; Pagemill Partners; and GCP Securities, LLC. Member FINRA/SIPC. M&A advisory services in the United Kingdom and Germany are provided by Duff & Phelps Securities Ltd. Duff & Phelps Securities Ltd. is authorized and regulated by the Financial Services Authority. Investment banking services in France are provided by Duff & Phelps SAS. For more information, visit www.duffandphelps.com. (NYSE: DUF)

Contacts

Duff & Phelps
Investor and Media Relations
Marty Dauer, 212-871-7700
[email protected]