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SHARE-BASED COMPENSATION (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Summary of General Terms of Stock-Based Compensation Plans for Awards Granted

Summarized below are the general terms of our stock-based compensation plans, for which awards have been granted as of December 31, 2022.

 

Stock-Based compensation plan

 

Granted awards

 

 

 

Vesting schedule

 

Options’ exercise
price

 

RSUs’ grant date
fair value

 

2004 plan

 

 

1,575,037

 

(1)

 

immediately upon granting to four years

 

$3.95~$12.75

 

 

—

 

2006 Plan

 

 

256,716

 

(2)

 

immediately upon granting to four years

 

$3.85~$83

 

$14.55~$80.05

 

2007 Plan

 

 

675,057

 

(3)

 

immediately upon granting to four years

 

$2.90~$90.85

 

$12.35~$76.75

 

 

(1)
The granted awards, net of forfeited or canceled options, were within reserved shares of 1,400 thousand ordinary shares.
(2)
The granted awards, net of forfeited or canceled options or shares, were within reserved shares of 200 thousand ordinary shares.
(3)
The granted awards, net of forfeited or canceled options or shares, were within reserved shares of 400 thousand ordinary shares.
Summary of Option Transactions

Option transactions during the last three years are summarized as follows:

 

2022

 

 

2021

 

2020

 

 

Weighted
Avg.
Exercise
Price

 

 

No. of
Shares
(in thousands)

 

 

Weighted-
Average
Remaining
Contractual
Term

 

 

Aggregate
Intrinsic
Value
(in thousands)

 

 

Weighted
Avg.
Exercise
Price

 

 

No. of
Shares
(in thousands)

 

 

 

Weighted
Avg.
Exercise
Price

 

 

No. of
Shares
(in thousands)

 

Balance at January 1

$

6.13

 

 

 

37

 

 

 

 

 

 

 

 

$

6.16

 

 

 

49

 

 

 

$

11.00

 

 

 

225

 

Options granted

 

—

 

 

 

—

 

 

 

 

 

 

 

 

 

—

 

 

 

—

 

 

 

 

—

 

 

 

—

 

Options exercised

 

—

 

 

 

—

 

 

 

 

 

 

 

 

 

—

 

 

 

—

 

 

 

 

—

 

 

 

—

 

Options Forfeited / canceled /
   expired

 

4.05

 

 

 

(4

)

 

 

 

 

 

 

 

 

6.25

 

 

 

(12

)

 

 

 

12.35

 

 

 

(176

)

Balance at December 31

$

6.38

 

 

 

33

 

 

 

1.57

 

 

$

—

 

 

$

6.13

 

 

 

37

 

 

 

$

6.16

 

 

 

49

 

Exercisable at December 31

$

6.38

 

 

 

33

 

 

 

1.57

 

 

$

—

 

 

$

6.13

 

 

 

37

 

 

 

$

6.16

 

 

 

49

 

Vested and expected to vest at
   December 31

$

6.38

 

 

 

33

 

 

 

1.57

 

 

$

—

 

 

$

6.13

 

 

 

37

 

 

 

$

6.16

 

 

 

49

 

 
Information about Stock Options Outstanding

The following table sets forth information about stock options outstanding at December 31, 2022:

 

Options outstanding

 

Option currently exercisable

 

Exercise price

 

No. of Shares
(in thousands)

 

 

Weighted
average
remaining
contractual life

 

Exercise price

 

No. of Shares
(in thousands)

 

Under $5

 

 

4

 

 

4.35 years

 

Under $5

 

 

4

 

$5~$50

 

 

29

 

 

1.18 years

 

$5~$50

 

 

29

 

$50~$100

 

 

—

 

 

 

 

$50~$100

 

 

—

 

 

 

 

33

 

 

 

 

 

 

 

33