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Stockholders’ Equity (Tables)
 12 Months Ended
Sep. 30, 2018
Stockholders’ Equity  
Summary of RSU activity

The following table summarizes our RSU activity:

 

 

 

 

 

 

 

 

 

 

Unvested Restricted Stock Units

 

 

    

 

    

Weighted-Average

 

 

 

Number of Shares

 

Grant-Date Fair Value

 

Unvested at October 1, 2016

 

889,129

 

$

45.98

 

Granted

 

395,913

 

 

46.20

 

Vested

 

(158,243)

 

 

46.15

 

Forfeited

 

(81,612)

 

 

48.32

 

Unvested at September 30, 2017

 

1,045,187

 

$

45.86

 

Granted

 

344,433

 

 

61.19

 

Vested

 

(147,832)

 

 

46.88

 

Forfeited

 

(239,700)

 

 

48.42

 

Unvested at September 30, 2018

 

1,002,088

 

$

50.32