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EQUITY-BASED COMPENSATION PLANS | 9 Months Ended
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Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
EQUITY-BASED COMPENSATION PLANS | EQUITY-BASED COMPENSATION PLANS The Lam Research Corporation 2015 Stock Incentive Plan, as amended (the “2015 Plan”), provides for the grant of non-qualified equity-based awards of the Company’s Common Stock to eligible employees and non-employee directors, including stock options, restricted stock units (“RSUs”), and market-based performance RSUs (“market-based PRSUs”). An option is a right to purchase Common Stock at a set price. An RSU award is an agreement to issue a set number of shares of Common Stock at the time of vesting. The Company’s market-based PRSUs contain both a market condition and a service condition. The Company’s options, RSU, and market-based PRSU awards typically vest over a period of three years. The Company also has an employee stock purchase plan that allows employees to purchase its Common Stock at a discount through payroll deductions. The Company recognized the following equity-based compensation expense (including expense related to the employee stock purchase plan) and related income tax benefit in the Condensed Consolidated Statements of Operations:
| Three Months Ended |  | Nine Months Ended
| March 31, 2019 |  | March 25, 2018 |  | March 31, 2019 |  | March 25, 2018
| (in thousands)
Equity-based compensation expense | $ | 53,240 |  |  | $ | 41,095 |  |  | $ | 142,389 |  |  | $ | 125,002 |
Income tax benefit recognized related to equity-based compensation expense | $ | 28,337 |  |  | $ | 46,366 |  |  | $ | 42,204 |  |  | $ | 77,842 |
Stock Options The fair value of the Company’s stock options granted during the nine months ended March 31, 2019 was estimated using a Black-Scholes options valuation model, which requires the input of highly subjective assumptions, including expected stock price volatility and the estimated life of each award. The following table summarizes stock option activity:
| Options Outstanding
| Number of Shares |  | Weighted- Average Exercise Price
June 24, 2018 | 482,928 |  |  | $ | 86.53 |
Granted | 181,450 |  |  | 164.54 |
Exercised | (69,948 | ) |  | 73.18 |
Expired or forfeited | (59,068 | ) |  | 126.05 |
March 31, 2019 | 535,362 |  |  | $ | 110.35 |
Restricted Stock During the nine months ended March 31, 2019, the Company issued both service-based RSUs and market-based performance RSUs (“PRSUs”). The fair value of the Company’s service-based RSUs was calculated based on the fair market value of the Company’s stock at the grant date, discounted for dividends. The fair value of the Company’s market-based PRSUs was calculated using a Monte Carlo simulation model at the date of the grant. Market-based PRSUs generally vest three years from the grant date if certain performance criteria are achieved and require continued employment. Based upon the terms of such awards, the number of shares that can be earned over the performance periods is based on the Company’s Common Stock price performance compared to the market price performance of the Philadelphia Semiconductor Sector Index (“SOX”), ranging from 0% to 150% of target. The stock price performance or market price performance is measured using the closing price for the 50-trading days prior to the dates the performance period begins and ends. The target number of shares represented by the market-based PRSUs is increased by 2% of target for each 1% that Common Stock price performance exceeds the market price performance of the SOX index. The result of the vesting formula is rounded down to the nearest whole number. The following table summarizes restricted stock activity:
| Service-based RSUs Outstanding |  | Market-based PRSUs Outstanding
| Number of Shares |  | Weighted- Average Grant Date Fair Value |  | Number of Shares |  | Weighted- Average Grant Date Fair Value
June 24, 2018 | 2,193,088 |  |  | $ | 134.34 |  |  | 693,726 |  |  | $ | 104.59 |
Granted | 873,769 |  |  | 161.34 |  |  | 163,529 |  |  | 165.78 |
Vested | (1,101,015 | ) |  | 114.64 |  |  | (301,622 | ) |  | 70.58 |
Expired or Forfeited | (126,148 | ) |  | 138.44 |  |  | (117,851 | ) |  | 104.52 |
March 31, 2019 | 1,839,694 |  |  | $ | 158.65 |  |  | 437,782 |  |  | $ | 144.35 |

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- Definition Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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