Lee, Edward; Stathopoulos, Konstantinos; Vonatsos, … - In: Corporate Governance: An International Review 15 (2007) 6, pp. 1469-1479
We value UK executive stock options (ESOs) as American options that are awarded conditional on the probability of the holders achieving some performance criteria. Unlike the standard Black and Scholes (BS) model, which is universally used both in the literature and practice, this provides a more...