PRSUs will be made in fully-vested shares of common stock. For the three months ended July 27, 2019, the Company recorded $131,000 of compensation expense related to the Fiscal 2020 LTIP. The Company recorded 0 compensation expense related to the Fiscal 2020 LTIP for the three months ended July 28, 2018. At July 27, 2019, the maximum compensation expense that may be recorded for the performance-based portion of the Fiscal 2020 LTIP is $4,696,000.
During the three months ended July 28, 2018, the Company also granted awards under the Restated 2006 Plan to key employees (“Fiscal 2019 LTIP”). Awards under the Fiscal 2019 LTIP consist of: (i) time-based restricted stock awards which vest in equal tranches in July 2019, July 2020 and July 2021, and (ii) PRSUs which vest based on the Company’s achievement of revenue and operating income targets for the three-year period ending April 30, 2021. At the award date, target achievement levels for each of the financial performance metrics were established for the PRSUs, at which levels the PRSUs would vest at 100% for each such metric. Threshold achievement levels for which the PRSUs would vest at 50% for each such metric and maximum achievement levels for which such awards would vest at 200% for each such metric were also established. The actual payout for the PRSUs at the end of the performance period will be calculated based upon the Company’s achievement of the established revenue and operating income targets for the performance period. Settlement of the PRSUs will be made in fully-vested shares of common stock. For the three months ended July 27, 2019 and July 28, 2018, the Company recorded $33,000 and $44,000 of compensation expense related to the Fiscal 2019 LTIP, respectively. At July 27, 2019, the maximum compensation expense that may be recorded for the performance-based portion of the Fiscal 2019 LTIP is $2,933,000.
During the three months ended July 29, 2017, the Company also granted awards under the Restated 2006 Plan to key employees (“Fiscal 2018 LTIP”). Awards under the Fiscal 2018 LTIP consist of: (i) time-based restricted stock awards which vest in equal tranches in July 2018, July 2019 and July 2020, and (ii) PRSUs which vest based on the Company’s achievement of revenue and operating income targets for the three-year period ending April 30, 2020. At the award date, target achievement levels for each of the financial performance metrics were established for the PRSUs, at which levels the PRSUs would vest at 100% for each such metric. Threshold achievement levels for which the PRSUs would vest at 50% for each such metric and maximum achievement levels for which such awards would vest at 200% for each such metric were also established. The actual payout for the PRSUs at the end of the performance period will be calculated based upon the Company’s achievement of the established revenue and operating income targets for the performance period. Settlement of the PRSUs will be made in fully-vested shares of common stock. For the three months ended July 27, 2019 and July 28, 2018, the Company recorded $8,000 and $490,000 of compensation expense related to the Fiscal 2018 LTIP, respectively. At July 27, 2019, the maximum compensation expense that may be recorded for the performance-based portion of the Fiscal 2018 LTIP is $2,180,000.
During the three months ended July 29, 2017, the Company also granted awards under the Restated 2006 Plan to key employees (“Fiscal 2017 LTIP”). Awards under the Fiscal 2017 LTIP consist of: (i) time-based restricted stock awards which vested in equal tranches in July 2017, July 2018 and July 2019, and (ii) PRSUs which vested based on the Company’s achievement of revenue and operating income targets for the three-year period ending April 30, 2019. During the three months ended July 27, 2019, the Company issued a total of 14,814 fully-vested shares of common stock to settle the PRSUs in the Fiscal 2017 LTIP. NaN compensation expense was recorded during the three months ended July 27, 2019 for the Fiscal 2017 LTIP.
At July 27, 2019 and April 30, 2019, the Company recorded cumulative stock-based compensation expense from the Fiscal 2020 LTIP, Fiscal 2019 LTIP and Fiscal 2018 LTIP of $1,600,000 and $1,429,000, respectively. At each reporting period, the Company reassesses the probability of achieving the performance targets for the PRSUs. The estimation of whether the performance targets will be achieved requires judgment, and to the extent actual results or updated estimates differ from the Company’s current estimates, the cumulative effect on current and prior periods of those changes will be recorded in the period estimates are revised.
14. Income Taxes
For the three months ended July 27, 2019, the Company recorded a provision for income taxes of $2,133,000, yielding an effective tax rate of 10.4%. For the three months ended July 28, 2018, the Company recorded a provision for income taxes of $2,567,000, yielding an effective tax rate of 10.9%. The variance from statutory rates for the three months ended July 27, 2019 was primarily due to federal R&D credits, foreign derived intangible income deduction and the recording