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STOCKHOLDERS' EQUITY: (Tables)
 6 Months Ended
Jun. 30, 2018
STOCKHOLDERS' EQUITY:  
Schedule of activity in treasury stock

 

Activity in treasury stock in the six-month period ended June 30, 2018 and 2017 is 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 June 30,

 
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

 
8.4

 
4.3

 

 

 

 

 

 

 

Balance as of June 30,

 
240.8

 
222.9

 

 

 

 

 

 

 

 

 

 

 

 

 

Treasury stock balance as of June 30,

 

$
3,009.1

 

$
2,991.6

 

 

 

 

 

 

 

 

 

 

Schedule of share distributions

 

 

 

2018

 

2017

 

Southern Copper common shares

 

 

 

 

 

Directors’ Stock Award Plan

 
16,000

 
10,800

 

 

 

 

 

 

 

Parent Company (Grupo Mexico) common shares

 

 

 

 

 

Employee stock purchase plan (shares in millions)

 
1.3

 
0.3

 

 

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,

 
(345,600

)
(334,800

)

Granted in the period

 
(16,000

)
(10.800

)

 

 

 

 

 

 

Total shares granted at June 30,

 
(361,600

)
(345,600

)

 

 

 

 

 

 

 

 

 

 

 

 

Remaining shares reserved

 
238.400

 
254.400

 

 

 

 

 

 

 

 

Summary of non-controlling interest activity

 

 

 

2018

 

2017

 

Balance as of January 1,

 

$
41.7

 

$
38.6

 

Net earnings

 
2.6

 
1.6

 

Dividend paid

 
(0.9

)
(0.3

)

 

 

 

 

 

 

Balance as of June 30,

 

$
43.4

 

$
39.9

 

 

 

 

 

 

 

 

 

 

Employee Stock Purchase 2010 Plan  
STOCKHOLDERS' EQUITY:  
Schedule of stock based compensation expense and unrecognized compensation expense

 

The stock based compensation expense for the first six months 2018 and 2017 and the unrecognized compensation expense under this plan were as follows (in millions):

 

 

 

2018

 

2017

 

Stock based compensation expense

 

$
0.2

 

$
0.3

 

Unrecognized compensation expense

 

$

—

 

$
0.5

 

 

Schedule of stock award activity

 

 

 

Shares

 

Unit Weighted Average
Grant Date Fair Value

 

 

 

 

 

 

 

Outstanding shares at January 1, 2018

 
1,393,663

 

$
2.05

 

Granted

 

—

 

—

 

Exercised

 
(1,246,753

)
2.05

 

Forfeited

 

—

 

—

 

 

 

 

 

 

 

Outstanding shares at June 30, 2018

 
146,910

 

$
2.05

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding shares at January 1, 2017

 
1,401,096

 

$
2.05

 

Granted

 

—

 

—

 

Exercised

 
(7,433

)
2.05

 

Forfeited

 

—

 

—

 

 

 

 

 

 

 

Outstanding shares at June 30, 2017

 
1,393,663

 

$
2.05

 

 

 

 

 

 

 

 

 

Employee Stock Purchase 2015 Plan  
STOCKHOLDERS' EQUITY:  
Schedule of stock based compensation expense and unrecognized compensation expense

 

The stock based compensation expense for the first six months of 2018 and 2017 and the unrecognized compensation expense under this plan were as follows (in millions):

 

 

 

2018

 

2017

 

Stock based compensation expense

 

$
0.3

 

$
0.3

 

Unrecognized compensation expense

 

$
2.9

 

$
3.5

 

 

Schedule of stock award activity

 

 

 

Shares

 

Unit Weighted Average
Grant Date Fair Value

 

 

 

 

 

 

 

Outstanding shares at January 1, 2018

 
2,293,120

 

$
2.63

 

Granted

 

—

 

—

 

Exercised

 
(49,320

)
2.63

 

Forfeited

 

—

 

—

 

 

 

 

 

 

 

Outstanding shares at June 30, 2018

 
2,243,800

 

$
2.63

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding shares at January 1, 2017

 
2,540,223

 

$
2.63

 

Granted

 

—

 

—

 

Exercised

 
(248,992

)
2.63

 

Forfeited

 

—

 

—

 

 

 

 

 

 

 

Outstanding shares at June 30, 2017

 
2,291,231

 

$
2.63