the measurement period places us below the 25th percentile of the Index Companies, then no shares will be earned under the Performance Unit Program. If our total return to shareholders over the measurement period places us at or above the 25th percentile of the Index Companies, then a percentage of the awards (ranging from 50% to 200%) will be earned. Dividends equivalents are credited as additional performance units, subject to the same terms and conditions as the original performance units, with respect to all dividends paid after the grant date and based on the price per common share on the applicable dividend payment date. In the event of a termination due to death, disability or qualifying retirement, performance will be evaluated and the earned shares (if any) will be determined as of the last day of the month in which the termination occurs. For this purpose, an award recipient will be eligible for qualifying retirement once he or she attains age 57 and completes at least 15 years of service
Restricted Share Rights. Restricted Share Rights represent the right to receive common shares on a future date, subject to any applicable service and/or performance conditions. Each Three-Year Restricted Share Right is scheduled to vest in three equal installments on each of April 15, 2020, April 15, 2021 and April 15, 2022. EachTwo-Year Restricted Share Right is scheduled to vest in two equal installments on each of April 15, 2020 and April 15, 2021. Restricted Share Rights are subject to accelerated vesting in the event of death or disability prior to the otherwise scheduled vesting dates. In addition, vesting will also accelerate in the event of involuntary termination within one year following a change in control. Three-Year Restricted Share Rights will also become payable upon qualifying retirement, even if it occurs prior to the otherwise applicable vesting date. TheTwo-Year Restricted Share Rights do not contain a retirement feature and therefore also serve to encourage the retention of our long-tenured executives.
Dividend equivalents are payable in cash on the Restricted Share Rights with respect to all dividends paid after the grant date at the same time as the associated dividend payment (the foregoing only applies to the basic number of shares subject to these awards — see below regarding dividend equivalents payable with respect to any additional shares earned under the outperformance feature of these awards).
Outperformance Feature for Three-Year Restricted Share Rights.The Three-Year Restricted Share Rights granted this year include an “outperformance feature” whereby additional shares may be earned, up to 200% of the shares subject to the basic award, based on the Company’s achievement of superior results for same-store net operating cash income growth and development activity during the three-year period ending December 31, 2021. These performance goals will be weighted equally to determine the number of additional shares earned, if any. Half of any additional shares earned will vest based on continued service through each of January 1, 2022 and January 1, 2023, provided that this additional service requirement will be waived in the event of a death, disability or qualifying retirement.
In the case of death, disability or qualifying retirement prior to December 31, 2021, the opportunity to earn additional shares under the outperformance feature will remain in effect, but the number of additional shares earned at the conclusion of the performance period (if any) will bepro-rated to reflect the fraction of the performance period actually worked.
In the event of a change in control prior to December 31, 2021, the performance period will be truncated and the number of additional shares earned will be determined by the Committee based on performance through the end of the fiscal quarter immediately preceding the transaction. The additional time vesting period noted above will continue to apply, except as otherwise indicated with respect to death, disability or qualifying retirement.
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