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STOCKHOLDERS' EQUITY (Tables)
 12 Months Ended
Dec. 31, 2018
Share based Compensation Plan  
Schedule of activity in treasury stock

 

Activity in treasury stock in the years 2018 and 2017 was as follows (in millions):

 

 

 

 

 

 

 

 

 

    

2018

    

2017

Southern Copper common shares

 

 

 

 

 

 

Balance as of January 1,

 

$

2,768.7

 

$

2,769.0

Purchase of shares

 

 

 —

 

 

 —

Used for corporate purposes

 

 

(0.4)

 

 

(0.3)

Balance as of December 31,

 

 

2,768.3

 

 

2,768.7

Parent Company (Grupo Mexico) common shares

 

 

 

 

 

 

Balance as of January 1,

 

 

232.4

 

 

218.6

Other activity, including dividend, interest and foreign currency transaction effect

 

 

18.9

 

 

13.8

Balance as of December 31,

 

 

251.3

 

 

232.4

Treasury stock balance as of December 31,

 

$

3,019.6

 

$

3,001.1

 

Schedule of activity in Directors' Stock Award Plan

 

 

 

 

 

 

 

    

2018

    

2017

Total SCC shares reserved for the plan

 

600,000

 

600,000

Total shares granted at January 1,

 

(346,800)

 

(334,800)

Granted in the period

 

(16,000)

 

(12,000)

Total shares granted at December 31,

 

(362,800)

 

(346,800)

Remaining shares reserved

 

237.200

 

253,200

 

Employee Stock Purchase 2010 Plan  
Share based Compensation Plan  
Schedule of stock based compensation expense and unrecognized compensation expense

The stock based compensation expense for the years ended December 31, 2018, 2017 and 2016 and the remaining balance of the unrecognized compensation expense under this plan were as follows (in millions):

 

 

 

 

 

 

 

 

 

 

 

 

    

2018

    

2017

    

2016

Stock based compensation expense

 

$

0.2

 

$

0.6

 

$

0.6

Unrecognized compensation expense

 

$

 —

 

$

0.2

 

$

0.8

 

Schedule of stock award activity

 

 

 

 

 

 

 

 

    

 

    

Unit Weighted Average

 

 

Shares

 

Grant Date Fair Value

Outstanding shares at January 1, 2018

 

1,393,663

 

$

2.05

Granted

 

 —

 

 

 —

Exercised

 

(1,275,729)

 

 

2.05

Forfeited

 

 —

 

 

 —

Outstanding shares at December 31, 2018

 

117,934

 

$

2.05

Outstanding shares at January 1, 2017

 

1,401,096

 

$

2.05

Granted

 

 —

 

 

 —

Exercised

 

(7,433)

 

 

2.05

Forfeited

 

 —

 

 

 —

Outstanding shares at December 31, 2017

 

1,393,663

 

$

2.05

 

Employee Stock Purchase 2015 Plan  
Share based Compensation Plan  
Schedule of stock based compensation expense and unrecognized compensation expense

The stock based compensation expense for the years ended December 31, 2018, 2017 and 2016 and the unrecognized compensation expense under this plan were as follows (in millions):

 

 

 

 

 

 

 

 

 

 

 

 

    

2018

    

2017

 

2016

Stock based compensation expense

 

$

0.6

 

$

0.6

 

$

0.6

Unrecognized compensation expense

 

$

2.6

 

$

3.2

 

$

3.8

 

Schedule of stock award activity

 

 

 

 

 

 

 

 

    

 

    

Unit Weighted Average

 

 

Shares

 

Grant Date Fair Value

Outstanding shares at January 1, 2018

 

2,293,120

 

$

 2.63

Granted

 

 —

 

 

—

Exercised

 

(452,784)

 

$

 2.63

Forfeited

 

 —

 

 

—

Outstanding shares at December 31, 2018

 

1,840,336

 

$

 2.63

Outstanding shares at January 1, 2017

 

2,540,223

 

$

 2.63

Granted

 

 —

 

 

—

Exercised

 

(247,103)

 

$

 2.63

Forfeited

 

 —

 

 

—

Outstanding shares at December 31, 2018

 

2,293,120

 

$

 2.63

 

Employee Stock Purchase 2018 Plan  
Share based Compensation Plan  
Schedule of stock based compensation expense and unrecognized compensation expense

 

The stock based compensation expense for the year ended December 31, 2018 and the unrecognized compensation expense under this plan were as follows (in millions):

 

 

 

 

 

 

    

2018

Stock based compensation expense

 

$

 —

Unrecognized compensation expense

 

$

3.6

 

Schedule of stock award activity

 

 

 

 

 

 

 

 

 

 

Unit Weighted Average

 

    

Shares

    

Grant Date Fair Value

Outstanding shares at January 1, 2018

 

 —

 

 —

Granted

 

2,782,424

 

1.86

Exercised

 

 —

 

 —

Forfeited

 

 —

 

 —

Outstanding shares at December 31, 2018

 

2,782,424

 

1.86

 

Employee Stock Purchase 2018 Plan | Voluntary Resignation  
Share based Compensation Plan  
Schedule of percentage deduction from the amount to be paid to the employee on termination of service

 

 

 

 

 

 

    

% Deducted

 

If the resignation occurs during:

 

 

 

1st year after the grant date

 

90

%

2nd year after the grant date

 

80

%

3rd year after the grant date

 

70

%

4th year after the grant date

 

60

%

5th year after the grant date

 

50

%

6th year after the grant date

 

40

%

7th year after the grant date

 

20

%

 

Employee Stock Purchase 2018 Plan | Involuntary Termination  
Share based Compensation Plan  
Schedule of percentage deduction from the amount to be paid to the employee on termination of service

 

 

 

 

 

 

    

% Deducted

 

If the resignation occurs during:

 

 

 

1st year after the grant date

 

100

%

2nd year after the grant date

 

95

%

3rd year after the grant date

 

90

%

4th year after the grant date

 

80

%

5th year after the grant date

 

70

%

6th year after the grant date

 

60

%

7th year after the grant date

 

50

%