A Model of Equity Based Compensation with Tax

In this paper, we develop a two‐stage continuous time model of employee stock option (ESO) valuation under different tax regimes. We show that tax rules can have significant effects on ESO exercise behavior. In addition, we find that incentive stock options (ISO) are the optimal form of compensation for all levels of employees in the UK. In the US, restricted stock plans are preferred, and tax breaks offered by incentive schemes are only beneficial to employees with high liquid wealth (or small option holdings relative to wealth) or low risk aversion. We also analyze 83b elections for restricted stock plans in the US and find that making an election is a sub‐optimal decision for both the employee and the firm.     

Employee stock ownership and the cost of capital

This paper investigates the relationship between employee stock ownership and the cost of capital, the main determinant of shareholder value creation computed through economic value added (EVA). By reducing agency conflicts within the firm, we hypothesize that employee share ownership reduces the firm’s cost of capital by affecting its two components, i.e. the cost of equity and the cost of debt. We test this hypothesis in France, a leading country in terms of employee ownership, based on a panel of the 120 largest listed companies for the 2000–2011 period. We find: (i) no significant relationship between employee stock ownership and the cost of equity; (ii) a negative curvilinear relationship between employee stock ownership and the cost of debt; (ii) a negative curvilinear relationship between employee stock ownership and the weighted average cost of capital. These results suggest debtholders regard ESO as positive as long it is moderate because it shifts risk from them to employees and that this effect is still perceptible in the weighted average cost of capital.     

Repricing and employee stock option valuation

A repricing occurs when the issuing firm resets the strike price of an employee stock option (ESO). ESO repricings occur most frequently following a significant decline in the underlying stock price. Typically, the strike price is reset to the new stock price. We develop a new model for valuing ESOs with a repricing feature. Our valuation model is developed within a utility-maximizing framework that accounts for potentially multiple repricings, employee risk aversion, employee non-option wealth, the non-tradeability of ESOs, and the early exercise feature of ESOs. Simulations suggest that these factors can significantly affect ESO value.     

Evidence on differences between recognition and disclosure: A comparison of inputs to estimate fair values of employee stock options

I investigate reliability differences across recognition and disclosure regimes to shed light on differing incentives and reporting of employee stock option (ESO) fair values. I compare ESO fair values based on firm-reported inputs with ESO fair values based on benchmark inputs, estimated following authoritative guidance. On average, I find opportunism increases with recognition as compared with disclosure, and that it is associated with incentives to manage earnings. Despite the increase in opportunism, I find that accuracy does not decline for recognizers, and that accuracy differs across voluntary and mandatory recognition.     

American GARCH employee stock option valuation

We implement a flexible simulation-based approach for the fair value of employee stock option (ESO) that accounts for the vesting period, departure risk and voluntary suboptimal early exercise. We introduce GARCH effects on the underlying asset and we analyze the price bias with respect to the constant volatility case. We also perform a sensitivity analysis with respect to changes in several ESO characteristics. We compare this valuation with FAS 123 method revealing a FAS overvaluation. Finally, we value a real ESO plan providing the confidence intervals for the estimated ESO prices.     

The Effect of Exercise Date Uncertainty on Employee Stock Option Value

The IASC recently recommended that employee compensation in the form of stock options be measured at the 'fair value' based on an option pricing model and the value should be recognized in financial statements. This follows adoption of SFAS No. 123 in the United States, which requires firms to estimate the value of employee stock options using either a Black‐Scholes or binomial model. Most US firms used the B‐S model for their 1996 financial statements. This study assumes that option life follows a Gamma distribution, allowing the variance of option life to be separate from its expected life. The results indicate the adjusted Black‐Scholes model could overvalue employee stock options on the grant date by as much as 72 percent for nondividend paying firms and by as much as 84 percent for dividend paying firms. The results further demonstrate the sensitivity of ESO values to the volatility of the expected option life, a parameter that the B‐S model or a Poisson process cannot accommodate. The variability of option life has an especially big impact on ESO value for firms whose ESOs have a relatively short life (5 years, for example) and high employee turnover. For such firms, the results indicate a binomial option pricing model is more appropriate for estimating ESO value than the B‐S type model.     

Is backdating executive stock options always costly to shareholders?

We use a binomial model to investigate the cost to shareholders of backdating employee stock option (ESO) grants to award in‐the‐money rather than at‐the‐money options to a manager. When the expected return of the stock underlying an ESO is sufficiently close to the risk‐free rate, a backdating arrangement can always be structured to simultaneously improve shareholders’ wealth and the manager's utility. The smaller the manager's non‐option wealth, personal income tax rate or risk tolerance, the more likely a backdating arrangement can be welfare improving.     

Analytic Pricing of Employee Stock Options

We introduce a model that captures the main properties thatcharacterize employee stock options (ESO). We discuss the likelihoodof early voluntary ESO exercise, and the obligation to exerciseimmediately if the employee leaves the firm, except if thishappens before options are vested, in which case the optionsare forfeited. We derive an analytic formula for the price ofthe ESO and in a case study compare it to alternative methods.     

Employee Stock Options, Equity Valuation, and the Valuation of Option Grants Using a Warrant-Pricing Model

We investigate the use of a warrant‐pricing approach to incorporate employee stock options (ESOs) into equity valuation and to account for the dilutive effect of ESOs in the valuation of option grants for financial reporting purposes. Our valuation approach accounts for the jointly determined nature of ESO and shareholder values. The empirical results show that our stock price estimate exhibits lower prediction errors and higher explanatory powers for actual share price than does the traditional stock price estimate. We use our valuation approach to assess the implications of dilution on the fair‐value estimates of ESO grants. We find that the fair value is overstated by 6% if we ignore the dilutive feature of ESOs. Furthermore, this bias is larger for firms that are heavy users of ESOs, small, and R&D intensive, and for firms that have a broad‐based ESO compensation plan.     

Employee Stock Options and Investment

Exercises of employee stock options generate substantial cash inflows to the firm. These cash inflows substitute for costly external finance in those states of the world in which the demand for investment is high. Using the fact that the proceeds from option exercises exhibit a distinct nonlinearity around the point where options fall out of the money, we estimate that firms increase investment by $0.34 for each dollar received from the exercise of stock options. Firms that face higher external financing costs allocate more of the proceeds from option exercises to investment.     

ESO compensation: The roles of default risk, employee sentiment, and insider information

This paper derives a pricing model for employee stock options (ESO) that includes default risk and considers employee sentiment. Using ESO data from 1992 to 2004, the study finds that the average executive's subjective value is about 55% of the Black-Scholes value. Only employees who over-estimate firm returns (or insiders who know that the firm is under-valued) by about 10% per annum will prefer ESOs over cash compensation. Our model also shows that work incentives offered by ESOs may be far lower than those implied by Black-Scholes but that ESOs may induce less risk-taking behavior, contrary to typical moral hazard arguments. Findings may impact relevant accounting regulations as well as compensation decisions.     

The association between employee stock option disclosures and corporate governance: Evidence from an enhanced disclosure regime

This study examines the role of corporate governance in employee stock option (ESO) disclosures following the revision of AASB 1028 Employee Benefits in 2001. We find that, while firms do not fully comply with AASB 1028 ESO disclosures, they voluntarily provide other ESO disclosures. In relation to corporate governance measures that have a role in the financial reporting process, we find two corporate governance measures dominate our results—the quality of auditor and duality of the role of CEO and Chair of the Board of Directors. We show that, in general, external auditor quality has positive incremental association with both mandatory and voluntary ESO disclosures while the dual role of CEO and chairperson of the board is associated with lower levels of mandatory disclosure.     

Financial reporting for employee stock options: liabilities or equity?

This study seeks to determine whether employee stock options share key characteristics of liabilities or equity. Consistent with warrant pricing theory, we find that common equity risk and expected return are negatively associated with the extent to which a firm has outstanding employee stock options, which is opposite to the association for liabilities. We also find the following. (1) The association is positive for firms that reprice options and less negative for firms that have options with longer remaining terms to maturity, which indicates that some employee stock options have characteristics that make them more similar to liabilities. (2) Leverage measured based on treating options as equity has a stronger positive relation with common equity risk than leverage measured based on treating options as liabilities. (3) The sensitivity of employee stock option value to changes in asset value mirrors that of common equity value and is opposite to that of liability value. Also, we find that, unlike liabilities, employee stock options have substantially higher risk and expected return than common equity. Our findings are not consistent with classifying employee stock options as liabilities for financial reporting if classification were based on the directional association of a claim with common equity risk and expected return. Rather, our findings suggest the options act more like another type of equity.     

Managing Employee Stock Option Expense: A Fair Value Approach

Owing to special characteristics, classic option pricing models are not well suited to the valuation of employee stock options (ESOs). This paper attempts to conduct a more general fair value estimation based on attaching performance targets to option vesting. Considering a setting that includes factors such as options that may be exercised early at employee discretion, employee exit rates and firm default risk, this paper presents a sensitivity analysis and empirical tests of option value. The results highlight the importance of considering the characteristics of ESOs in the design of performance‐vested option plans so as to provide the most attractive incentives for employees.     

Underperformance of founder-led firms: An examination of compensation contracting theories during the executive stock options backdating scandal

Using the executive stock option (ESO) backdating scandal as a backdrop, this paper examines whether compensation committees can effectively set executive compensation contracts in the presence of a founding CEO. Analyzing a sample of firms accused of backdating ESO grant dates and a control sample of non-backdating firms, we find evidence suggesting that managerial power influences the decision to backdate. Specifically, our analysis indicates the presence of a founder CEO increases the likelihood that ESOs are backdated by 22%. We further find that founder-led firms strongly underperform a matched sample of non-backdating firms. This finding contrasts a number of studies that document superior operating and stock return performance for founder-led firms.     

A simulation-based algorithm for American executive stock option valuation

We present an algorithm that merges a certainty-equivalence framework with the least-squares Monte Carlo algorithm to obtain the executive stock option (ESO) value for a risk-averse and undiversified agent. We account for the difference between executive’s value and firm cost of the ESO. We show how early-exercise decisions depend on executive’s preferences and its diversification degree. Because of the algorithm flexibility, it allows for multiple state-variables. As an example, we consider the case of indexed ESOs revealing a significant improvement in terms of executive’s discount respect to fixed strike ESOs.     

A dynamic analysis of executive stock options: Determinants and consequences

We investigate the determinants of executive stock options (ESOs) and their impact on risky investment and subsequent firm performance in a dynamic setting. We find that, first, the dynamic response of ESOs to growth opportunity and risk is positive and lasts for two to three years. Second, the dynamic response of risky investments to option compensation is positive but converges to zero after three years. More importantly, the positive effect of ESOs on risky investments is observed when CEOs' personal risk-aversion is taken into account. Third, accounting performance responds positively to the risky, option-induced investment, but the dynamic effect lasts only for one year. Meanwhile, when managers undertake more risky investments than what ESOs imply, accounting performance responds negatively to the over-investment.     

DO INSIDERS PRACTICE WHAT THEY PREACH? INFORMED OPTION EXERCISES AROUND MERGERS AND ACQUISITIONS

We examine executive stock option exercises around a sample of merger and acquisition announcements between 1996 and 2006, focusing on a subset we identify as potentially informed. For stock‐financed acquisitions, we find a surge in informed exercises by acquirer insiders in the year leading up to the acquisition announcement, but target insiders display no similar increase. We find the market reaction upon the announcement for acquirers is negatively related to extreme early exercises and find some evidence of long‐run underperformance. Overall, our evidence indicates that insiders knowingly bid for firms when they personally believe their own firm is overvalued.     

The effect of changes in ownership structure on performance: Evidence from the thrift industry

Restrictions on stock ownership may harm a company's performance, because restrictions prevent owners from choosing an optimal structure. We examine the stock-price performance and ownership structure of a sample of thrift institutions that converted from mutual to stock ownership. We find that after conversion and the expiration of ownership-structure restrictions, firm performance improves significantly, and the portions of the firm owned by managers and the firm's employee stock ownership plan increase. Changes in performance are positively associated with changes in ownership by managers, but negatively associated with changes in ownership by employee stock ownership plans.     

Non-marketability and the value of employee stock options

We adapt the Benninga et al. (2005) framework to value employee stock options (ESOs). The model quantifies non-diversification effects, is computationally simple, and provides an endogenous explanation of ESO early-exercise. Using a proprietary dataset of ESO exercise events we measure the non-marketability ESO discount. We find that the ESO value on the grant date is approximately 45% of a similar plain vanilla Black–Scholes value. The model is aligned with empirical findings of ESOs, gives an exercise boundary of ESOs and can serve as an approximation to the fair value estimation of share-based employee and executive compensation. Using the model we give a numerical measure of non-diversification in an imperfect market.