Inputs to option pricing models
In estimating the expected volatility of and dividends on the underlying shares, the objective is to approximate the expectations that would be reflected in a current market or negotiated exchange price for the option. Similarly, when estimating the effects of early exercise of employee share options, the objective is to approximate the expectations that an outside party with access to detailed information about employees' exercise behaviour would develop based on information available at the grant date
Often, there is likely to be a range of reasonable expectations about future volatility, dividends and exercise behaviour. If so, an expected value should be calculated, by weighting each amount within the range by its associated probability of occurrence
Expectations about the future are generally based on experience, modified if the future is reasonably expected to differ from the past. In some circumstances, identifiable factors may indicate that unadjusted historical experience is a relatively poor predictor of future experience. For example, if an entity with two distinctly different lines of business disposes of the one that was significantly less risky than the other, historical volatility may not be the best information on which to base reasonable expectations for the future
In other circumstances, historical information may not be available. For example, a newly listed entity will have little, if any, historical data on the volatility of its share price. Unlisted and newly listed entities are discussed further below
In summary, an entity should not simply base estimates of volatility, exercise behaviour and dividends on historical information without considering the extent to which the past experience is expected to be reasonably predictive of future experience
Expected early exercise
Employees often exercise share options early, for a variety of reasons. For example, employee share options are typically non-transferable. This often causes employees to exercise their share options early, because that is the only way for the employees to liquidate their position. Also, employees who cease employment are usually required to exercise any vested options within a short period of time, otherwise the share options are forfeited. This factor also causes the early exercise of employee share options. Other factors causing early exercise are risk aversion and lack of wealth diversification
The means by which the effects of expected early exercise are taken into account depends upon the type of option pricing model applied. For example, expected early exercise could be taken into account by using an estimate of the option's expected life (which, for an employee share option, is the period of time from grant date to the date on which the option is expected to be exercised) as an input into an option pricing model (eg the Black-Scholes-Merton formula
Alternatively, expected early exercise could be modelled in a binomial or similar option pricing model that uses contractual life as an input Factors to consider in estimating early exercise include
a)the length of the vesting period, because the share option typically
b) cannot be exercised until the end of the vesting period. Hence, determining the valuation implications of expected early exercise is based on the assumption that the options will vest. The implications of vesting conditions are discussed in paragraphs 19-21 the average length of time similar options have remained outstanding in the past the price of the underlying shares. Experience may indicate that the employees tend to exercise options when the share price reaches a specified level above the exercise price
c)the employee's level within the organisation. For example, experience might indicate that higher-level employees tend to exercise options later than lower-level employees (discussed further in paragraph B21
d)expected volatility of the underlying shares. On average, employees might tend to exercise options on highly volatile shares earlier than on shares with low volatility
As noted in paragraph B17, the effects of early exercise could be taken into account by using an estimate of the option's expected life as an input into an option pricing model. When estimating the expected life of share options granted to a group of employees, the entity could base that estimate on an appropriately weighted average expected life for the entire employee group or on appropriately weighted average lives for subgroups of employees within the group, based on more detailed data about employees' exercise behaviour (discussed further below
Separating an option grant into groups for employees with relatively homogeneous exercise behaviour is likely to be important. Option value is not a linear function of option term; value increases at a decreasing rate as the term lengthens. For example, if all other assumptions are equal, although a two-year option is worth more than a one-year option, it is not worth twice as much. That means that calculating estimated option value on the basis of a single weighted average life that includes widely differing individual lives would overstate the total fair value of the share options granted. Separating options granted into several groups, each of which has a relatively narrow range of lives included in its weighted average life, reduces that overstatement
Similar considerations apply when using a binomial or similar model. For example, the experience of an entity that grants options broadly to all levels of employees might indicate that top-level executives tend to hold their options longer than middle-management employees hold theirs and that lower-level employees tend to exercise their options earlier than any other group. In addition, employees who are encouraged or required to hold a minimum amount of their employer's equity instruments, including options, might on average exercise options later than employees not subject to that provision. In those situations, separating options by groups of recipients with relatively homogeneous exercise behaviour will result in a more accurate estimate of the total fair value of the share options granted
Expected volatility
Expected volatility is a measure of the amount by which a price is expected to fluctuate during a period. The measure of volatility used in option pricing models is the annualised standard deviation of the continuously compounded rates of return on the share over a period of time. Volatility is typically expressed in annualised terms that are comparable regardless of the time period used in the calculation, for example, daily, weekly or monthly price observations The rate of return (which may be positive or negative) on a share for a period measures how much a shareholder has benefited from dividends and appreciation (or depreciation) of the share price The expected annualised volatility of a share is the range within which the continuously compounded annual rate of return is expected to fall approximately two-thirds of the time. For example, to say that a share with an expected continuously compounded rate of return of 12 per cent has a volatility of 30 per cent means that the probability that the rate of return on the share for one year will be between -18 per cent (12% - 30%) and 42 per cent (12% + 30%) is approximately two-thirds. If the share price is CU100 at the beginning of the year and no dividends are paid, the year-end share price would be expected to be between CU83.53 (CU100 × e-0.18) and CU152.20 (CU100 × e0.42) approximately two-thirds of the time
Factors to consider in estimating expected volatility include
a)implied volatility from traded share options on the entity's shares, or other traded instruments of the entity that include option features (such as convertible debt), if any
b)the historical volatility of the share price over the most recent period that is generally commensurate with the expected term of the option (taking into account the remaining contractual life of the option and the effects of expected early exercise
c)the length of time an entity's shares have been publicly traded. A newly listed entity might have a high historical volatility, compared with similar entities that have been listed longer. Further guidance for newly listed entities is given below
the tendency of volatility to revert to its mean, ie its long-term average
d)level, and other factors indicating that expected future volatility might differ from past volatility. For example, if an entity's share price was extraordinarily volatile for some identifiable period of time because of a failed takeover bid or a major restructuring, that period could be disregarded in computing historical average annual volatility
e)appropriate and regular intervals for price observations. The price observations should be consistent from period to period. For example, an entity might use the closing price for each week or the highest price for the week, but it should not use the closing price for some weeks and the highest price for other weeks. Also, the price observations should be expressed in the same currency as the exercise price
Newly listed entities
As noted in paragraph B25, an entity should consider historical volatility of the share price over the most recent period that is generally commensurate with the expected option term. If a newly listed entity does not have sufficient information on historical volatility, it should nevertheless compute historical volatility for the longest period for which trading activity is available. It could also consider the historical volatility of similar entities following a comparable period in their lives. For example, an entity that has been listed for only one year and grants options with an average expected life of five years might consider the pattern and level of historical volatility of entities in the same industry for the first six years in which the shares of those entities were publicly traded
Unlisted entities
An unlisted entity will not have historical information to consider when estimating expected volatility. Some factors to consider instead are set out below
In some cases, an unlisted entity that regularly issues options or shares to employees (or other parties) might have set up an internal market for its shares. The volatility of those share prices could be considered when estimating expected volatility
Alternatively, the entity could consider the historical or implied volatility of similar listed entities, for which share price or option price information is available, to use when estimating expected volatility. This would be appropriate if the entity has based the value of its shares on the share prices of similar listed entities
If the entity has not based its estimate of the value of its shares on the share prices of similar listed entities, and has instead used another valuation methodology to value its shares, the entity could derive an estimate of expected volatility consistent with that valuation methodology. For example, the entity might value its shares on a net asset or earnings basis. It could consider the expected volatility of those net asset values or earnings
Expected dividends
Whether expected dividends should be taken into account when measuring the fair value of shares or options granted depends on whether the counterparty is entitled to dividends or dividend equivalents
For example, if employees were granted options and are entitled to dividends on the underlying shares or dividend equivalents (which might be paid in cash or applied to reduce the exercise price) between grant date and exercise date, the
options granted should be valued as if no dividends will be paid on the underlying shares, ie the input for expected dividends should be zero
Similarly, when the grant date fair value of shares granted to employees is estimated, no adjustment is required for expected dividends if the employee is entitled to receive dividends paid during the vesting period
Conversely, if the employees are not entitled to dividends or dividend equivalents during the vesting period (or before exercise, in the case of an option), the grant date valuation of the rights to shares or options should take expected dividends into account. That is to say, when the fair value of an option grant is estimated, expected dividends should be included in the application of an option pricing model. When the fair value of a share grant is estimated, that valuation should be reduced by the present value of dividends expected to be paid during the vesting period
Option pricing models generally call for expected dividend yield. However, the models may be modified to use an expected dividend amount rather than a yield. An entity may use either its expected yield or its expected payments. If the entity uses the latter, it should consider its historical pattern of increases in dividends. For example, if an entity's policy has generally been to increase dividends by approximately 3 per cent per year, its estimated option value should not assume a fixed dividend amount throughout the option's life unless there is evidence that supports that assumption
Generally, the assumption about expected dividends should be based on publicly available information. An entity that does not pay dividends and has no plans to do so should assume an expected dividend yield of zero. However, an emerging entity with no history of paying dividends might expect to begin paying dividends during the expected lives of its employee share options. Those entities could use an average of their past dividend yield (zero) and the mean dividend yield of an appropriately comparable peer group
Risk-free interest rate
Typically, the risk-free interest rate is the implied yield currently available on zero-coupon government issues of the country in whose currency the exercise price is expressed, with a remaining term equal to the expected term of the option being valued (based on the option's remaining contractual life and taking into account the effects of expected early exercise). It may be necessary to use an appropriate substitute, if no such government issues exist or circumstances indicate that the implied yield on zero-coupon government issues is not representative of the risk-free interest rate (for example, in high inflationeconomies). Also, an appropriate substitute should be used if market participants would typically determine the risk-free interest rate by using that substitute, rather than the implied yield of zero-coupon government issues, when estimating the fair value of an option with a life equal to the expected term of the option being valued
Capital structure effects
Typically, third parties, not the entity, write traded share options. When these share options are exercised, the writer delivers shares to the option holder Those shares are acquired from existing shareholders. Hence the exercise of traded share options has no dilutive effect In contrast, if share options are written by the entity, new shares are issued when those share options are exercised (either actually issued or issued in substance, if shares previously repurchased and held in treasury are used). Given that the shares will be issued at the exercise price rather than the current market price at the date of exercise, this actual or potential dilution might reduce the share price, so that the option holder does not make as large a gain on exercise as on exercising an otherwise similar traded option that does not dilute the share price Whether this has a significant effect on the value of the share options granted depends on various factors, such as the number of new shares that will be issued on exercise of the options compared with the number of shares already issued. Also, if the market already expects that the option grant will take place, the market may have already factored the potential dilution into the share price at the date of gran. However, the entity should consider whether the possible dilutive effect of the future exercise of the share options granted might have an impact on their estimated fair value at grant date. Option pricing models can be adapted to take into account this potential dilutive effect
Modifications to equity-settled share-based payment arrangements
Paragraph 27 requires that, irrespective of any modifications to the terms and conditions on which the equity instruments were granted, or a cancellation or settlement of that grant of equity instruments, the entity should recognise, as a minimum, the services received measured at the grant date fair value of the equity instruments granted, unless those equity instruments do not vest because of failure to satisfy a vesting condition (other than a market condition) that was specified at grant date. In addition, the entity should recognise the effects of modifications that increase the total fair value of the share-based payment arrangement or are otherwise beneficial to the employee To apply the requirements of paragraph 27
a)if the modification increases the fair value of the equity instruments granted (eg by reducing the exercise price), measured immediately before and after the modification, the entity shall include the incremental fair value granted in the measurement of the amount recognised for services received as consideration for the equity instruments granted. The incremental fair value granted is the difference between the fair value of the modified equity instrument and that of the original equity instrument, both estimated as at the date of the modification. If the modification occurs during the vesting period, the incremental fair value granted is included in the measurement of the amount recognised for services received over the period from the modification date until the date when the modified equity instruments vest, in addition to the amount based on the grant date fair value of the original equity instruments, which is recognised over the remainder of the original vesting period. If the modification occurs after vesting date, the incremental fair value granted is recognised immediately, or over the vesting period if the employee is required to complete an additional period of service before becoming unconditionally entitled to those modified equity instruments
b) similarly, if the modification increases the number of equity instruments granted, the entity shall include the fair value of the additional equity instruments granted, measured at the date of the modification, in the measurement of the amount recognised for services received as consideration for the equity instruments granted, consistently with the requirements in (a) above. For example, if the modification occurs during the vesting period, the fair value of the additional equity instruments granted is included in the measurement of the amount recognised for services received over the period from the modification date until the date when the additional equity instruments vest, in addition to the amount based on the grant date fair value of the equity instruments originally granted, which is recognised over the remainder of the original vesting period
c) if the entity modifies the vesting conditions in a manner that is beneficial to the employee, for example, by reducing the vesting period or by modifying or eliminating a performance condition (other than a market condition, changes to which are accounted for in accordance with (a) above), the entity shall take the modified vesting conditions into account when applying the requirements of paragraphs 19-21 granted in a manner that reduces the total fair value of the share-based payment arrangement, or is not otherwise beneficial to the employee, the entity shall nevertheless continue to account for the services received as consideration for the equity instruments granted as if that modification had not occurred (other than a cancellation of some or all the equity instruments granted, which shall be accounted for in accordance with paragraph 28). For example
a)if the modification reduces the fair value of the equity instruments granted, measured immediately before and after the modification, the entity shall not take into account that decrease in fair value and shall continue to measure the amount recognised for services received as consideration for the equity instruments based on the grant date fair value of the equity instruments granted
b)if the modification reduces the number of equity instruments granted to an employee, that reduction shall be accounted for as a cancellation of that portion of the grant, in accordance with the requirements of paragraph 28
(c) if the entity modifies the vesting conditions in a manner that is not beneficial to the employee, for example, by increasing the vesting period or by modifying or adding a performance condition (other than a market condition, changes to which are accounted for in accordance with A
Share-based payment transactions among group entities 2009 amendments
Paragraphs 43A-43C address the accounting for share-based payment transactions among group entities in each entity's separate or individual financial statements. Paragraphs B46-B61 discuss how to apply the requirements in paragraphs 43A-43C. As noted in paragraph 43D, share-based payment transactions among group entities may take place for a variety of reasons depending on facts and circumstances. Therefore, this discussion is not exhaustive and assumes that when the entity receiving the goods or services has no obligation to settle the transaction, the transaction is a parent's equity contribution to the subsidiary, regardless of any intragroup repayment arrangements Although the discussion below focuses on transactions with employees, it also applies to similar share-based payment transactions with suppliers of goods or services other than employees. An arrangement between a parent and its subsidiary may require the subsidiary to pay the parent for the provision of the equity instruments to the employees. The discussion below does not address how to account for such an intragroup payment arrangement Four issues are commonly encountered in share-based payment transactions among group entities. For convenience, the examples below discuss the issues in terms of a parent and its subsidiary
Share-based payment arrangements involving an entity's own equity instruments
The first issue is whether the following transactions involving an entity's own equity instruments should be accounted for as equity-settled or as cash-settled in accordance with the requirements of this IFRS
a) an entity grants to its employees rights to equity instruments of the entity (eg share options), and either chooses or is required to buy equity instruments (ie treasury shares) from another party, to satisfy its obligations to its employees; and
b)an entity's employees are granted rights to equity instruments of the entity (eg share options), either by the entity itself or by its shareholders, and the shareholders of the entity provide the equity instruments needed
The entity shall account for share-based payment transactions in which it receives services as consideration for its own equity instruments as equity-settled. This applies regardless of whether the entity chooses or is required to buy those equity instruments from another party to satisfy its obligations to its employees under the share-based payment arrangement. It also applies regardless of whether
a)the employee's rights to the entity's equity instruments were granted by the entity itself or by its shareholder(s); or
b)the share-based payment arrangement was settled by the entity itself or by its shareholde
If the shareholder has an obligation to settle the transaction with its investee's employees, it provides equity instruments of its investee rather than its own. Therefore, if its investee is in the same group as the shareholder, in accordance with paragraph 43C, the shareholder shall measure its obligation in accordance with the requirements applicable to cash-settled share-based payment transactions in the shareholder's separate financial statements and those applicable to equity-settled share-based payment transactions in the shareholder's consolidated financial statements
Share-based payment arrangements involving equity instruments of the parent
The second issue concerns share-based payment transactions between two or more entities within the same group involving an equity instrument of another group entity. For example, employees of a subsidiary are granted rights to equity instruments of its parent as consideration for the services provided to the subsidiaryTherefore, the second issue concerns the following share-based payment arrangement
a) a parent grants rights to its equity instruments directly to the employees of its subsidiary: the parent (not the subsidiary) has the obligation to provide the employees of the subsidiary with the equity instrumentsand
b)a subsidiary grants rights to equity instruments of its parent to its employees: the subsidiary has the obligation to provide its employees with the equity instruments
A parent grants rights to its equity instruments to the employees of itssubsidiary paragraph
The subsidiary does not have an obligation to provide its parent's equity instruments to the subsidiary's employees. Therefore, in accordance with paragraph 43B, the subsidiary shall measure the services received from its employees in accordance with the requirements applicable to equity-settled share-based payment transactions, and recognise a corresponding increase in equity as a contribution from the parent
The parent has an obligation to settle the transaction with the subsidiary's employees by providing the parent's own equity instruments. Therefore, in accordance with paragraph 43C, the parent shall measure its obligation in accordance with the requirements applicable to equity-settled share-based payment transactions
A subsidiary grants rights to equity instruments of its parent to its Because the subsidiary does not meet either of the conditions in paragraph 43B, it shall account for the transaction with its employees as cash-settled. This requirement applies irrespective of how the subsidiary obtains the equity instruments to satisfy its obligations to its employees
Share-based payment arrangements involving cash-settled payments to employees
The third issue is how an entity that receives goods or services from its suppliers (including employees) should account for share-based arrangements that are cash-settled when the entity itself does not have any obligation to make the required payments to its suppliers. For example, consider the following arrangements in which the parent (not the entity itself) has an obligation to make the required cash payments to the employees of the entity
a) the employees of the entity will receive cash payments that are linked to the price of its equity instruments
b)the employees of the entity will receive cash payments that are linked to the price of its parent's equity instruments
The subsidiary does not have an obligation to settle the transaction with its employees. Therefore, the subsidiary shall account for the transaction with its employees as equity-settled, and recognise a corresponding increase in equity as a contribution from its parent. The subsidiary shall remeasure the cost of the transaction subsequently for any changes resulting from non-market vesting conditions not being met in accordance with paragraphs 19-21. This differs from the measurement of the transaction as cash-settled in the consolidated financial statements of the group Because the parent has an obligation to settle the transaction with the employees, and the consideration is cash, the parent (and the consolidated group) shall measure its obligation in accordance with the requirements applicable to cash-settled share-based payment transactions
Transfer of employees between group entities
The fourth issue relates to group share-based payment arrangements that involve employees of more than one group entity. For example, a parent might grant rights to its equity instruments to the employees of its subsidiaries, conditional upon the completion of continuing service with the group for a specified period. An employee of one subsidiary might transfer employment to another subsidiary during the specified vesting period without the employee's rights to equity instruments of the parent under the original share-based payment arrangement being affected. If the subsidiaries have no obligation to settle the share-based payment transaction with their employees, they account for it as an equity-settled transaction. Each subsidiary shall measure the services received from the employee by reference to the fair value of the equity instruments at the date the rights to those equity instruments were originally granted by the parent as defined in Appendix A, and the proportion of the vesting period the employee served with each subsidiary .If the subsidiary has an obligation to settle the transaction with its employees in its parent's equity instruments, it accounts for the transaction as cash-settled. Each subsidiary shall measure the services received on the basis of grant date fair value of the equity instruments for the proportion of the vesting period the employee served with each subsidiary. In addition, each subsidiary shall recognise any change in the fair value of the equity instruments during the employee's service period with each subsidiary Such an employee, after transferring between group entities, may fail to satisfy a vesting condition other than a market condition as defined in Appendix A, eg the employee leaves the group before completing the service period. In this case, because the vesting condition is service to the group, each subsidiary shall adjust the amount previously recognised in respect of the services received from the employee in accordance with the principles in paragraph 19. Hence, if the rights to the equity instruments granted by the parent do not vest because of an employee's failure to meet a vesting condition other than a market condition, no amount is recognised on a cumulative basis for the services received from that employee in the financial statements of any group entity
Appendix C Amendments to other IFRSs
The amendments in this appendix become effective for annual financial statements covering periods beginning on or after 1 January 2005. If an entity applies this IFRS for an earlier period, these amendments become effective for that earlier period
The amendments contained in this appendix when this Standard was issued in 2004 have been incorporated into the relevant IFRSs published in this volume
صفحه 1 2 3 4 5