About the Author
Roger J. Grabowski is managing director of Duff & Phelps LLC. Roger has testified in court as an expert witness on the value of closely held businesses and business interests, matters of solvency, valuation, and amortization of intangible assets, and other valuation issues. He testified in the Northern Trust case, the first U.S. Tax Court decision that adopted the discounted cash flow method to value the stock of a closely held business with the discount rate based on the capital asset pricing model. Grabowski authors the annual Duff & Phelps Risk Premium Report.