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O2Micro International Limited

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FY2020 Annual Report · O2Micro International Limited
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Exhibit 99.1

CONTENTS

CORPORATE INFORMATION

CHAIRMAN’S STATEMENT

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

FINANCIAL HIGHLIGHTS

1

2

6

8

CORPORATE INFORMATION

Independent Auditor 

Deloitte & Touche

Legal counsel

Board of Directors

Morrison & Foerster LLP
Palo Alto office
755 Page Mill Road
Palo Alto, California 94304 USA

Maples and Calder (Cayman) LLP
P.O. Box 309
Ugland House
Grand Cayman KY1-1104
Cayman Islands

Executive Directors
Sterling Du (Chairman, Chief Executive Officer)
Chuan Chiung “Perry” Kuo (Chief Financial Officer)
James Elvin Keim (Head of Marketing and Sales)

Independent Non-executive Directors
Michael Austin
Teik Seng Tan
Daniel Lenehan
Lawrence Lai-Fu Lin 
Vijay Kumar
Ji Liu 

Depositary for American Depositary Receipts The Bank of New York Mellon Corporation

Share Registrar

Corporate Headquarters 

Other Addresses

Registered Office

ADR Division
One Wall Street, 29th Floor
New York, New York 10286 USA

Maples Fund Services (Cayman) Limited
P.O. Box 1093
Boundary Hall, Cricket Square
Grand Cayman KY1-1102
Cayman Islands

Grand Pavilion Commercial Centre, West Bay Road
P.O. Box 32331
George Town
Grand Cayman KY1-1209
Cayman Islands
Phone: (345) 945-1110
Fax: (345) 945-1113

3118 Patrick Henry Drive
Santa Clara, CA 95054 USA
Phone: (408) 987-5920
Fax: (408) 987-5929

Maples Corporate Services Limited
P.O. Box 309
Ugland House,
Grand Cayman KY1-1104
Cayman Islands

-1-

3rd Floor, 1, Sec 4
Nanjing East Road
Taipei, Taiwan 105
Phone: (886) 2-2545-9095
Fax: (886) 2-2547-1721

CHAIRMAN’S STATEMENT

To Our Shareholders

O2Micro  designs,  develops,  and  markets  high  performance  integrated  circuits  and  solutions  for  manufacturers  of  products  in  the  consumer 

electronics, computer, industrial, and automotive markets. Our strategy is focused on building quality products based on our patented proprietary technology.

Fiscal  2020  was  an  outstanding  year.  Revenues  were  $78.3  million,  up  28.6%  from  2019  and  we  reported  full  year  GAAP  net  income  of  $6.1 
million, or $0.21 earnings per share, after reporting a net loss of $5.0 million, or $0.19 loss per share a year ago. This was our best year since 2012. Our 
performance was driven by strong growth in both our power management and intelligent lighting segments, where we continue to introduce innovative new 
products that provide our customers with the performance characteristics they are demanding.

Our  company  logo  reads  “Breathing  Life  Into  Mobility.”  And  in  2020  the  COVID-19  pandemic  thrust  mobility  into  the  limelight.  Sales  of 
computers,  tablets  and  notebooks  benefitted  from  both  the  work  from  home  and  educate  from  home  phenomenon.  High-end  TVs  and  monitors  used  in 
gaming  systems  surged  as  people  stayed  at  home  as  did  battery  managed  garden  equipment,  power  tools  and  vacuum  cleaners.  Increased  hospitalizations 
precipitated by COVID-19 led to growth in sales of advanced monitors for diagnosis while Travel restraints and social distancing led to a rapid upsurge in the 
sales of e-bikes.

All  of  these  products  rely  upon  the  speed  and  performance  of  advanced  integrated  circuits  produced  by  O2Micro.  Our  product  groups  have 

successfully developed next-generation patented products that appeal to top-tier and brand name OEMs that we now proudly call customers.

Intelligent Lighting

Our intelligent lighting product line enjoyed excellent growth in 2020, the result of our many design wins that include both 4K and 8K TV as well as 

an expansion of HDR monitors into gaming, medical and industrial applications.

With monitors and TVs getting larger and with higher quality displays, in many cases we now have multiple products into those systems, boosting 
revenue.  In  particular,  our  high-end  4K  and  8K  monitor  local  dimming  backlight  product  has  enjoyed  a  strong  growth  rate.  Demand  for  our  high-end 
backlighting solution is arising not only from the growing number of larger displays, but from the demand for higher quality graphics. Our market scan, local 
dimming  backlight  IC  continues  to  win  market  share  as  the  backlight  subsystem  is  made  of  thousands  of  full  array  LEDs  with  our  local  dimming,  which 
creates a higher contrast ratio, providing more light when the brightness is necessary and darker where darkness is demanded. It also eliminates blur, which is 
particularly useful in high end gaming systems. For example, the SONY 85-inch high-end 8K HDR LCD TV with Extended Dynamic Range comes with 
multiple arrays of our precision local dimming control ICs to provide many times the balancing-brightness of our competitors.

While we have a leading position in higher end products for TVs and monitors, we also continue to expand design activity in lower end TV and 

monitor products using our patented backlighting products with integrated MOSFETs. This market positioning is expected to enable our ongoing growth.

Mini LED is an emerging advanced technology. In mini-LED, the same local DME unit area could deploy 100 times more mini-LED units compared 

to a conventional LED packaged die, achieving much finer resolution with a much higher contrast ratio. We see this first deployment happening in the tablet 
or smaller-sized professional monitor later in 2021 and as mini-LED costs start to come down, more widespread adoption will follow.

Our new market scan LED backlight ICs for LCD displays is also effective for mini-LED local dimming. Market scan reduces motion blur and the 
so-called “halo effect” which improves the viewing experience on a monitor displaying fast moving objects. This enables finer resolution with a much higher 
contrast ratio. The ASP for these products is also significantly higher than that of many of our other products.

Our intelligent lighting R&D efforts in the industrial and automotive lighting have enabled ongoing process and design wins. This includes advanced 
products for robotics and autonomous driving applications where we are seeing good product acceptance. While these design wins take longer to generate 
revenue, we believe this will help enable long-term growth of our intelligent lighting Group.

-2-

Power Management Systems

Our battery management product line also saw excellent year-over-year growth, driven by the expansion of our design wins with major OEMs and 
power tools, e-bikes, e-vehicles, vacuum cleaners, garden tools and energy storage systems. As the cost of lithium-ion continues to decrease, the market has 
dramatically  expanded and accelerated the  movement  away from  the  traditional  power  cords  to battery  managed products. And,  with the  European Union 
having banned the use of nickel cadmium batteries, the demand for cordless products powered by lithium-ion batteries is likely to increase. For instance, the 
power tool market is project to grow from the $30 billion in 2020 to the $36.9 billion by 2025.

Design wins in battery management continue and battery-operated tools and appliances continue to grow all the way from vacuums to chain saws to 
ebikes with no sign of abating. Our battery management products include ARM-based microcontroller technology for market applications where some of our 
existing customers need more sophisticated battery management. We continue to file key battery management patent claims for our new products to protect 
both  our  company and  our  customers'  market  positions.  This  has  enabled  us  to  engage  with  higher  end  customers,  including  those  in  the  rapidly  growing 
energy storage market.

We also see more and more cells getting stacked together in many markets from e-bikes to vacuum cleaners, for instance. In the garden tool area, 
you  are  beginning  to  see  battery-powered  lawnmowers  and  garden  tractors,  and  these  require  quite  sophisticated  battery  management.  As  batteries  power 
larger products, we are increasingly selling higher voltage, higher ASP items. For example, going from ebikes to evehicles, requires larger batteries, which 
generate a higher ASP per battery pack.

Our major customer list continues to grow and includes Bissell, Black & Decker, Dyson, Electrolux, Lexy, LG, Makita, Murata, Panasonic, Philips, 

Samsung, Sharp and TI.

One of the areas where there is very significant growth is e-bikes. Due to COVID-19, many countries and major cities are limiting their downturn car 
traffic, which is driving the rapid adoption of e-bikes. So, this supports an opportunity to grow the battery management segment at a possibly higher pace than 
last year.

With lithium-ion battery prices going down and energy density increasing, battery management ICs will require higher voltage resolution, current 
sensing,  and  more  accurate  temperature  measurement.  Our  analog  front  end  battery  management  units  were  designed  with  a  14-bit  high-accuracy  A/D 
converter as mentioned, and that could meet customer needs. In some cases, we could reach 15 million millivolt resolution performance, which is currently 
well beyond customer expectations.

Also, we are continuing to invest in our testers to enhance our testing capacity to support our special ICs, especially those which require more testing 

time.

A Promising Future

We have been  a  supplier  to the internal  display systems inside the automobile for almost 15 years, which provides an entire to the  emerging EV 
market. Future vehicles, whether electrical or not, will be equipped with an increasing array of sensors. And each sensor will need an IC power supply. These 
require that you provide high DC current without any energy drawback. So, the accuracy of the current supplied to this array of sensors is critical. While this 
is a longer-term project, we are working on opportunities to power the multiple different sensors for the future vehicle, having already developed prototyping 
available for evaluation.

As  we  continue  to  move  forward  in  the  battery  management  industry,  we  are  leveraging  these  strong  customer  relationships.  For  instance,  at 
Panasonic we have already been supplying into some of their areas like vacuum cleaners. But we are using that foundation to move upstream into energy 
storage systems. This provides another, higher platform to once again move up, this time into their automotive segment.

Summary and Conclusion

Before concluding, I want to recognize the dedicated effort of our employees, who worked thru COVID-19 obstacles to keep product flowing from 

wafer fabs to assembly to test and ultimately to shipment to our customers.

-3-

We  continue  to  grow  the  business  despite  the  challenges  posed  by  the  global  pandemic.  We  are  optimistic  our  focus  on  high  margin,  high-
performance  business  as  well  as  operating  expense  management  provides  a  stable  foundation  for  long  term  growth.  While  the  dynamic  risk  factor  of  the 
market, COVID-19, and international trade issues remain uncertainties, we are dedicated to achieving the best return for shareholder. We always keep the 
shareholder’s best interest in mind.

Sterling Du
Chairman of the Board
Chief Executive Officer

-4-

O2Micro International Limited and Subsidiaries

Consolidated Financial Statements as of 
December 31, 2020 and 2019 and for the Years Ended December 31, 2020, 2019 and 2018, and 
Report of Independent Registered Public Accounting Firm

-5-

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Shareholders and the Board of Directors of O2Micro International Limited:

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of O2Micro International Limited and subsidiaries (the “Company”) as of December 31, 2020 
and 2019, the related consolidated statements of operations and comprehensive income (loss), shareholders’ equity, and cash flows for each of the three years 
in the period ended December 31, 2020, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements 
present fairly, in all material respects, the financial position of the Company as of December 31, 2020 and 2019, and the result of its operations and its cash 
flows for each of the three years in the period ended December 31, 2020, in conformity with accounting principles generally accepted in the United States of 
America.

Change in Accounting Principle

As  discussed  in  Note  2  to  the  financial  statements,  the  Company  has  changed  its  method  of  accounting  for  leases  in  2019  due  to  the  adoption  of  FASB 
Accounting Standards Codification (“ASC”) Topic 842, Leases.

Basis for Opinion

These  financial  statements  are  the  responsibility  of  the  Company’s  management.  Our  responsibility  is  to  express  an  opinion  on  the  Company’s  financial 
statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company 
in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable 
assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures 
to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. 
Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included 
evaluating  the  accounting  principles  used  and  significant  estimates  made  by  management,  as  well  as  evaluating  the  overall  presentation  of  the  financial 
statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required 
to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our 
especially challenging, subjective, or complex judgments. The communication of critical audit matter does not alter in any way our opinion on the financial 
statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the critical audit matter or on 
the accounts or disclosures to which it relates.

-6-

Inventories - Provisions for Obsolete Inventories - Refer to Notes 2 and 6 to the financial statements

Critical Audit Matter Description

The Company’s inventories are stated at the lower of standard cost or net realizable value. Cost is determined on a currently adjusted standard basis, which 
approximates actual cost on a first-in first-out basis. Because of the cyclicality of the market, inventory levels, obsolescence of technology and product life 
cycles, provisions for obsolete inventories are recognized based upon backlog, forecasted product demand and historical sales levels. Actual product demand 
may be significantly different than in the past or forecasted by the Company, which could have a material adverse effect on the Company’s inventories and 
cost of revenues. The provisions for obsolete inventories was $6,629 thousand as of December 31, 2020.

We  identified  the  provisions  for  obsolete  inventories  as  a  critical  audit  matter  because  of  significant  judgements  made  by  the  management  related  to 
forecasted product demand, which include assumptions of future market and economic conditions. This required a high degree of auditor’s judgment and an 
increased extent of effort when performing audit procedures to evaluate the reasonableness of the provisions for obsolete inventories.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to forecasted product demand in determining the provisions for obsolete inventories included the following, among others:

•

•

•

We  obtained  an  understanding  of  the  Company’s  methodology  for  determining  the  provisions  for  obsolete  inventories,  including  the  process  for 
developing forecasted product demand.

We tested the effectiveness of controls over the Company’s provisions for obsolete inventories, including controls over forecasting product demand.

We tested the accuracy and completeness of the underlying data management used in forecasting product demand when determining the provisions for 
obsolete inventories by performing the following:

– We performed peer analysis and industry analysis to evaluate the reasonableness of the trend of the forecasted product demand.

– We performed corroborating inquiries with the personnel responsible for sales forecasting to evaluate the reasonableness of the product demand 

forecasts.

•

We evaluated the reasonableness of the Company’s methodology for determining the provisions for obsolete inventories by performing the following:

– We compared the inventory level to forecasted product demand, historical sales, and subsequent sales.

– We tested the mathematical accuracy of management’s calculations.

/s/ Deloitte & Touche
Taipei, Taiwan
Republic of China
May 17, 2021

We have served as the Company’s auditor since 1998.

-7-

FINANCIAL HIGHLIGHTS

O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS
(In Thousand US Dollars, Except Per Share Amounts and Share Data)

ASSETS

CURRENT ASSETS

Cash and cash equivalents (notes 3 and 4)
Restricted cash
Short-term investments (notes 3 and 5)
Accounts receivable, net
Inventories (note 6)
Prepaid expenses and other current assets (note 7)

Total current assets

LONG-TERM INVESTMENTS (notes 3 and 8)

PROPERTY AND EQUIPMENT, NET (notes 9 and 10)

OTHER ASSETS (note 11)

TOTAL ASSETS

LIABILITIES AND SHAREHOLDERS’ EQUITY

CURRENT LIABILITIES

Notes and accounts payable
Income tax payable
Lease liabilities (note 10)
Accrued expenses and other current liabilities (note 12)

Total current liabilities

LONG-TERM LIABILITIES

Accrued pension liabilities (note 14)
Deferred income tax liabilities (note 13)
Lease liabilities (note 10)
Other liabilities

Total long-term liabilities

Total liabilities

COMMITMENTS AND CONTINGENCIES (notes 17 and 18)

SHAREHOLDERS’ EQUITY

Preference shares at $0.00002 par value per share; Authorized – 250,000,000 shares;
Ordinary shares at $0.00002 par value per share; Authorized – 4,750,000,000 shares; Issued – 

1,669,036,600 shares as of December 31, 2020 and 2019 Outstanding – 1,361,886,000 and 1,314,798,600 
shares as of December 31, 2020 and 2019, respectively

Additional paid-in capital
Accumulated deficits
Accumulated other comprehensive income
Treasury stock – 307,150,600 and 354,238,000 shares as of December 31, 2020 and 2019, respectively

Total shareholders’ equity

December 31

2020

2019

$

$

$

$

18,752
37
29,054
16,430
12,588
2,548
79,409

992

17,266

4,369

102,036

$

$

7,995
272
865
5,934
15,066

177
545
2,091
68
2,881

17,947

10,696
35
35,693
10,335
8,796
1,295
66,850

4,172

15,551

2,426

88,999

4,867
611
827
4,839
11,144

214
589
1,932
65
2,800

13,944

-

-

33
143,422
(46,744)
5,740
(18,362)

84,089

33
143,484
(51,773)
4,654
(21,343)

75,055

88,999

TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY

$

102,036

$

The accompanying notes are an integral part of the consolidated financial statements.

-8-

O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
(In Thousand US Dollars, Except Per Share Amounts and Share Data)

OPERATING REVENUES

COST OF REVENUES

GROSS PROFIT

OPERATING EXPENSES

Research and development (a)
Selling, general and administrative (a)

Total operating expenses

INCOME (LOSS) FROM OPERATIONS

NON-OPERATING INCOME

Interest income
Foreign exchange (loss) gain, net
Net (loss) gain recognized on long-term investments (note 8)
Gain on sale of real estate (note 9)
Government grants
Other, net

Total non-operating income

INCOME (LOSS) BEFORE INCOME TAX

INCOME TAX EXPENSE (note 13)

NET INCOME (LOSS)

OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX

Foreign currency translation adjustments
Unrealized pension gain

Total other comprehensive income (loss)

2020

Years Ended December 31
2019

2018

$

78,335

$

60,928

$

37,951

40,384

17,119
17,742

34,861

5,523

506
(238)
(79)
-
817
535

1,541

7,064

937

6,127

1,082
4

1,086

28,960

31,968

19,065
19,286

38,351

(6,383)

543
(162)
788
500
204
642

2,515

(3,868)

1,171

(5,039)

(85)
65

(20)

62,714

30,741

31,973

19,766
20,332

40,098

(8,125)

369
108
9,916
-
252
709

11,354

3,229

1,141

2,088

(677)
14

(663)

COMPREHENSIVE INCOME (LOSS)

$

7,213

$

(5,059) $

1,425

(Continued)

-9-

O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
(In Thousand US Dollars, Except Per Share Amounts and Share Data)

EARNINGS (LOSS) PER SHARE (note 16)

Basic
Diluted

NUMBER OF SHARES USED IN EARNINGS (LOSS) PER SHARE 
CALCULATION:

Basic (in thousands)
Diluted (in thousands)

(a)     INCLUDES STOCK-BASED COMPENSATION CHARGE AS FOLLOWS:
Research and development
Selling, general and administrative

2020

Years Ended December 31
2019

2018

-
-

$
$

-
-

$
$

-
-

1,348,899
1,436,208

1,316,032
1,316,032

1,300,795
1,330,822

293
1,121

$
$

272
1,190

$
$

241
1,180

$
$

$
$

The accompanying notes are an integral part of the consolidated financial statements.

(Concluded)

-10-

O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY
(In Thousand US Dollars, Except Share Data)

Accumulated Other 
Comprehensive Income

Additional

Cumulative Unrealized

Paid–in Accumulated Translation Pension

Treasury Shareholders’

Amount Capital

Deficits

Adjustment Gain (Loss) Total

Stock

Equity

Ordinary Shares
Shares

BALANCE, JANUARY 1, 2018

1,669,036,600 $

33 $ 142,946 $

(47,517) $

5,528 $

(191) $5,337 $(24,244) $

76,555

Issuance of:

Shares for exercise of stock options
Shares for Employee Stock Purchase Plan
Shares vested under restricted share units
Acquisition of treasury stock – 14,580,800 shares
Treasury stock reissued for:
Exercise of stock options
Employee Stock Purchase Plan
Restricted share units
Stock-based compensation
Net income for 2018
Pension gain
Foreign currency translation adjustments

346,550
3,307,950
25,588,950
-

(346,550)
(3,307,950)
(25,588,950)
-
-
-
-

-
-
1
-

-
-
(1)
-
-
-
-

10
86
(1)
-

(19)
(88)
(1,240)
1,421
-
-
-

-
-
-
-

(2)
(118)
(363)
-
2,088
-
-

-
-
-
-

-
-
-
-
-
-
(677)

-
-
-
-

-
-
-
-
-
14
-

-
-
-
-

-
-
-
-
-
14
(677)

-
-
-
(451)

21
206
1,604
-
-
-
-

10
86
-
(451)

-
-
-
1,421
2,088
14
(677)

BALANCE, DECEMBER 31, 2018

1,669,036,600

33

143,115

(45,912)

4,851

(177)

4,674

(22,864)

79,046

Issuance of:

Shares for exercise of stock options
Shares for Employee Stock Purchase Plan
Shares vested under restricted share units
Acquisition of treasury stock – 17,192,650 shares
Treasury stock reissued for:
Exercise of stock options
Employee Stock Purchase Plan
Restricted share units
Stock-based compensation
Net loss for 2019
Pension gain
Foreign currency translation adjustments

256,900
4,264,200
28,661,400
-

(256,900)
(4,264,200)
(28,661,400)
-
-
-
-

-
-
1
-

-
-
(1)
-
-
-
-

7
109
(1)
-

(16)
(122)
(1,070)
1,462
-
-
-

-
-
-
-

-
(136)
(686)
-
(5,039)
-
-

-
-
-
-

-
-
-
-
-
-
(85)

-
-
-
-

-
-
-
-
-
65
-

-
-
-
-

-
-
-
-
-
65
(85)

-
-
-
(510)

16
258
1,757
-
-
-
-

7
109
-
(510)

-
-
-
1,462
(5,039)
65
(85)

BALANCE, DECEMBER 31, 2019

1,669,036,600

33

143,484

(51,773)

4,766

(112)

4,654

(21,343)

75,055

Issuance of:

Shares for exercise of stock options
Shares for Employee Stock Purchase Plan
Shares vested under restricted share units
Acquisition of treasury stock –5,018,600 shares
Treasury stock reissued for:
Exercise of stock options
Employee Stock Purchase Plan
Restricted share units
Stock-based compensation
Net income for 2020
Pension gain
Foreign currency translation adjustments

10,907,100
2,485,400
38,713,500
-

(10,907,100)
(2,485,400)
(38,713,500)
-
-
-
-

-
-
1
-

-
-
(1)
-
-
-
-

476
78
(1)
-

(634)
(78)
(1,317)
1,414
-
-
-

-
-
-
-

(18)
(72)
(1,008)
-
6,127
-
-

-
-
-
-

-
-
-
-
-
-
1,082

-
-
-
-

-
-
-
-
-
4
-

-
-
-
-

-
-
-
-
-
4
1,082

-
-
-
(146)

652
149
2,326
-
-
-
-

476
78
-
(146)

-
(1)
-
1,414
6,127
4
1,082

BALANCE, DECEMBER 31, 2020

1,669,036,600 $

33 $ 143,422 $

(46,744) $

5,848 $

(108) $5,740 $(18,362) $

84,089

The accompanying notes are an integral part of the consolidated financial statements.

-11-

O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS
(In Thousand US Dollars)

CASH FLOWS FROM OPERATING ACTIVITIES

Net income (loss)
Adjustments to reconcile net income (loss) to net cash (used in) generated from 
operating activities:

2020

Years Ended December 31
2019

2018

$

6,127

$

(5,039) $

2,088

Depreciation and amortization
Stock-based compensation
Other income – government grants
Provisions for obsolete inventories
Net loss (gain) recognized on long-term investments
Gain on sale of real estate
(Gain) loss on disposal of property and equipment, net
Deferred income taxes
Changes in operating assets and liabilities:

Accounts receivable, net
Inventories
Prepaid expenses and other current assets
Deferred charges
Operating lease right-of-use assets
Notes and accounts payable
Income tax payable
Government grants
Accrued expenses and other current liabilities
Operating lease liabilities
Accrued pension liabilities
Other liabilities

Net cash (used in) generated from operating activities

CASH FLOWS FROM INVESTING ACTIVITIES

Acquisition of:

Short-term investments
Property and equipment

(Increase) decrease in other assets
Proceeds from:

Cash received on maturity of short-term investments
Disposal of long-term investments
Sale of real estate
Disposal of property and equipment

Net cash provided by (used in) investing activities

CASH FLOWS FROM FINANCING ACTIVITIES

Acquisition of treasury stock
Proceeds from:

Exercise of stock options
Issuance of ordinary shares under the Employee Stock Purchase Plan

Net cash provided by (used in) financing activities

-12-

3,225
1,414
(817)
405
79
-
(189)
(5)

(6,095)
(4,197)
(1,276)
(3,836)
(169)
3,128
(339)
817
808
197
(33)
3

(753)

(4,491)
(2,476)
(47)

11,418
3,124
-
331

7,859

(146)

476
77

407

1,780
1,462
(204)
1,359
(788)
(500)
2
(133)

1,053
133
981
(571)
(1,477)
285
198
204
661
1,494
(42)
3

861

(34,649)
(1,672)
6

4,953
7,061
2,169
1

(22,131)

(510)

7
109

(394)

1,641
1,421
(252)
1,328
(9,916)
-
(6)
(155)

(2,204)
(2,286)
(1,031)
(983)
-
2,122
72
252
(105)
-
(20)
(1)

(8,035)

(11,197)
(1,272)
(12)

22,540
2,582
-
16

12,657

(451)

10
86

(355)

(Continued)

O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS
(In Thousand US Dollars)

EFFECTS OF CHANGES IN FOREIGN EXCHANGE RATE

NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND 
RESTRICTED CASH

CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF 
THE YEAR

CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF THE 
YEAR

SUPPLEMENTAL DISCLOSURES OF CASH FLOWS

Cash paid for tax

$

$

$

2020

Years Ended December 31
2019

2018

545

$

(53) $

(374)

8,058

(21,717)

3,893

10,731

32,448

28,555

18,789

$

10,731

$

32,448

1,223

$

1,171

$

1,218

The accompanying notes are an integral part of the consolidated financial statements. (Concluded)

-13-

O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Expressed in United States Dollars Unless Otherwise Noted)

1. GENERAL

Business

O2Micro,  Inc.  was  incorporated  in  the  state  of  California  in  the  United  States  of  America  on  March  29,  1995.  In  March  1997,  O2Micro  International 
Limited (the “Company”) was incorporated in the Cayman Islands and all authorized and outstanding common stock, preferred stock, and stock options 
of O2Micro, Inc. were exchanged for the Company’s ordinary shares, preference shares, and stock options with identical rights and preferences. O2Micro, 
Inc.  became  the  Company’s  subsidiary  after  the  share  exchange.  The  Company  designs,  develops  and  markets  innovative  power  management 
components for the computer, consumer, industrial, automotive and communications markets.

The  Company’s  ordinary  shares  (“Shares”)  were  initially  listed  on  The  NASDAQ  National  Market  (“NASDAQ”)  on  August  23,  2000,  and  on  the 
Cayman Islands Stock Exchange on February 1, 2001. At the Extraordinary General Meeting of Shareholders (“EGM”) held on November 14, 2005, the 
shareholders  approved  a  public  global  offering  of  the  Company’s  Shares  and  various  matters  related  to  the  offering.  Following  the  approval  of  these 
matters,  the  Company  ceased  trading  its  Shares  on  the  NASDAQ,  effected  a  50-for-1  share  split  of  Shares,  created  an  American  depositary  share 
(“ADS”)  program  for  the  ADSs  to  be  quoted  on  the  NASDAQ,  and  delisted  the  Shares  from  the  NASDAQ  on  November  25,  2005.  The  Company 
commenced trading of ADSs on the NASDAQ on November 28, 2005.

The Company has incorporated various wholly owned subsidiaries in the past, including, among others, O2Micro Electronics, Inc. (“O2Micro-Taiwan”), 
O2Micro International Japan Ltd.  (“O2Micro-Japan”), O2Micro Korea Limited (“O2Micro-Korea”) and O2Micro (China) Co., Ltd. (“O2Micro-China”). 
O2Micro-Taiwan is engaged in operations and sales support services. O2Micro-Japan and O2Micro-Korea are engaged in sales support services. O2Micro-
China and other subsidiaries are mostly engaged in research and development services.

2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America. 
The  consolidated  financial  statements  include  the  accounts  of  the  Company  and  its  wholly  owned  subsidiaries.  All  intercompany  accounts  and 
transactions have been eliminated on consolidation.

Use of Estimates

The  preparation  of  financial  statements  in  conformity  with  accounting  principles  generally  accepted  in  the  United  States  of  America  requires 
management to make estimates and assumptions that affect certain reported amounts and disclosures. Accordingly, actual results could differ from those 
estimates.

Significant accounting estimates reflected in the Company’s consolidated financial statements include valuation allowance for deferred income tax assets, 
allowance for doubtful accounts, impairment of long-term investments, inventory valuation, useful lives for property and equipment, impairment of long-
lived assets, pension and uncertain tax liabilities, and contingencies.

-14-

Concentration of Credit Risk

Financial instruments that potentially subject the Company to a concentration of credit risk consist of cash, cash equivalents, restricted cash, short-term 
investments and accounts receivable. Cash is deposited with high credit quality financial institutions. For cash equivalents, restricted cash and short-term 
investments,  the  Company  invests  primarily  in  time  deposits  at  the  banks  with  good  credit  rating.  For  accounts  receivable,  the  Company  performs 
ongoing credit evaluations of its customers’ financial condition and the Company maintains an allowance for doubtful accounts based upon a review of 
the expected collectability of individual accounts.

For the year ended December 31, 2020, operating revenue generated from two customers accounted for 14% and 11%, respectively, of the total; accounts 
receivable from these two customers accounted for 9% and 19%, respectively, of the total as of December 31, 2020. For the year ended December 31, 
2019,  operating  revenue  generated  from  two  customers  accounted  for  14%  and  12%,  respectively,  of  the  total;  accounts  receivable  from  these  two 
customers accounted for 13% and 21%, respectively, of the total as of December 31, 2019.

Additionally,  for  the  year  ended  December  31,  2020,  four  vendors  accounted  for  32%,  19%,  11%  and  10%  of  the  Company’s  cost  of  goods  sold, 
respectively; accounts payable from these four vendors accounted for 18%, 23%, 18%, and 12% respectively, of the total as of December 31, 2020. For 
the year ended December 31, 2019, two vendors accounted for 34% and 19% of the Company’s cost of goods sold, respectively; accounts payable from 
these two vendors accounted for 23% and 32%, respectively, of the total as of December 31, 2019.

Fair Value of Financial Instruments

The  Company’s  financial  instruments  include  cash  and  cash  equivalents,  restricted  cash,  short-term  investments,  long-term  investments,  accounts 
receivable and notes and accounts payable. The carrying amounts approximate the fair value due to the short-term maturity of those instruments. Long-
term investments in public company equity securities are measured using the quoted market prices. Long-term investments in private company equity 
securities are measured at cost with adjustments for observable changes in price or impairments.

Cash and Cash Equivalents 

The Company considers all highly liquid investments with maturities of not more than three months when purchased to be cash equivalents. Investments 
with maturities of more than three months are classified as short-term investments.

Restricted Cash

The Company classifies deposits made for customs and cash pledged to a bank for the issuance of letters of credit as restricted cash. The deposits are 
classified as current assets when restricted cash is within a twelve-month period from the balance sheet date.

Short-term investments 

Short-term  investment  primarily  comprises  of  the  time  deposits  with  original  maturities  between  three  months  and  one  year.  The  carrying  amounts 
approximate the fair value due to the short-term maturity of these time deposits.

Inventories

Inventories are stated at the lower of standard cost or net realizable value. The cost of inventories comprises cost of purchasing raw materials and where 
applicable,  those  overheads  incurred  in  bringing  the  inventories  to  their  present  location  and  condition.  Cost  is  determined  on  a  currently  adjusted 
standard  basis,  which  approximates  actual  cost  on  a  first-in,  first-out  basis.  The  Company  assesses  its  inventory  for  estimated  obsolescence  or 
unmarketable inventory based upon management’s assumptions about future demand and market conditions and writes down inventory as needed.

-15-

Long-term Investments

Long-term investments in listed companies over which the Company does not exercise significant influence are recorded at fair value, and any changes in 
fair value are recognized in net income.

Long-term investments, including non-marketable equity investments and interests in venture capital funds, are measured at cost with adjustments for 
observable changes in price or impairments because those investments in equity securities do not have readily determinable fair value.

Property and Equipment

Property and equipment are stated at cost less accumulated depreciation. Major additions and betterments are capitalized, while maintenance and repairs 
are expensed as incurred.

Depreciation is computed on a straight-line basis over estimated service lives that range as follows: buildings - 35 to 50 years, equipment - 3 to 7 years, 
furniture  and  fixtures  -  3  to  7  years,  leasehold  improvements  -  the  shorter  of  the  estimated  useful  life  or  the  lease  term,  which  is  2  to  5  years,  and 
transportation equipment - 5 years.

Leases

On January 1, 2019, the Company adopted Accounting Standards Codification (“ASC”) Topic 842, “Leases”, using the modified retrospective transition 
method applied to contracts that were not complete as of the adoption date. Consolidated financial results for reporting periods beginning after January 1, 
2019 are presented under ASC Topic 842, while prior period amounts continue to be reported in accordance with ASC Topic 840, “Leases”.

Under ASC 842, the Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease ROU assets, current 
lease liabilities, and noncurrent lease liabilities in the Company’s consolidated balance sheets. ROU assets are included in the account of property and 
equipment, net. ROU assets represent the Company’s  right to  use an underlying asset for the lease term and lease liabilities represent the Company’s 
obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the 
present value of lease payments over the lease term. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental 
borrowing rate based on the rate of interest the Company would have to pay on a collateralized basis to borrow an amount equal to the lease payments 
under similar terms. The Company’s lease terms do not include options to extend or terminate leases unless the Company is reasonably certain that it will 
exercise those options. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

Payments  for  leases  of  low-value  assets  under  the  Company’s  capitalization  policy  and  short-term  leases  with  a  lease  term  less  than  12  months  are 
recognized as expenses on a straight-line basis during the lease term for which the recognition exemption is applied.

Under ASC 840, operating lease payments are recognized as expenses on a straight-line basis over the lease term.

For lease arrangements where the Company is the lessor, the Company recognizes lease income from operating leases on a straight-line basis over the 
lease term which is consistent under both ASC 842 and ASC840.

Long-lived Asset Impairment

The  Company  evaluates  the  recoverability  of  long-lived  assets  whenever  events  or  changes  in  circumstances  indicate  the  carrying  value  may  not  be 
recoverable. The carrying value of a long-lived asset is considered impaired when the anticipated undiscounted cash flows from the asset is separately 
identifiable and is less than the carrying value. If impairment occurs, a loss based on the excess of the carrying value over the fair value of the long-lived 
asset is recognized. Fair value is determined by reference to quoted market prices, if available, or discounted cash flows, as appropriate.

-16-

Treasury Stock

The Company may retire ordinary shares repurchased under a share repurchase plan. Accordingly, upon retirement the excess of the purchase price over 
par  value  is  allocated  between  additional  paid-in  capital  and  retained  earnings  based  on  the  average  issuance  price  of  the  shares  repurchased.  The 
Company may also determine not to retire ordinary shares repurchased for the purpose of reissuing them upon exercise of stock option, Employee Stock 
Purchase Plan, and release of restricted stock units (“RSUs”). The reissue cost of shares repurchased is determined by the moving average method. A 
repurchase of ADS is recorded as treasury stock when the Company completes the withdrawal of the underlying ordinary shares from the ADS program.

Revenue Recognition

Product Sales

The Company generates revenue primarily from product sales, either directly to a customer or through a distributor. In determining whether a contract 
exists,  the  Company  evaluates  the  terms  of  the  arrangement  including  rights,  obligations  and  payment  term,  the  relationship  with  the  customer  or 
distributor and their ability to pay.

At contract inception, the Company assesses the goods and shipping services promised in its contracts with customers and identifies a single performance 
obligation that the Company satisfies at a point in time. The Company recognizes product revenue from direct end customers and distributors and when 
the following events have occurred: (a) the Company has transferred physical possession of the products, (b) the Company has a present right to payment, 
(c) the customer has legal title to the products, and (d) the customer bears significant risks and rewards of ownership of the products. In accordance with 
the shipping terms specified in the contracts, these criteria are generally met when the products are shipped from the Company’s vendors (such as the “Ex 
Works” shipping term) or delivered to the customers’ locations (such as the “Delivered Duty Paid” shipping term). Payment for sales to customers is 
generally due on standard commercial terms.

The revenue recognized is adjusted based on an analysis of historical data and contractual terms. These adjustments, which are not material, generally 
include adjustments for pricing arrangements, product returns and incentives.

Licensing revenue

The Company recognizes licensing revenues when the Company satisfies a performance obligation by transferring a promised service (that is, an asset) to 
a customer. An asset is transferred when the customer obtains control of that asset.

In  addition,  the  Company  records  allowances  for  accounts  receivable  that  it  estimates  may  not  be  collected.  The  Company  monitors  collectability  of 
accounts  receivable  primarily  through  review  of  accounts  receivable  aging.  When  collection  is  at  risk,  the  Company  assesses  the  impact  on  amounts 
recorded for bad debts and, if necessary, records a charge in the period such evaluation is made.

Freight Costs

Costs of shipping and handling for delivery of the Company’s products that are reimbursed by customers are included as revenue in the consolidated 
statements of operations and comprehensive income. Shipping and handling costs are charged to cost of revenues as incurred.

Research and Development

Research and development costs consist of expenditures incurred during the course of planned research and investigation aimed at the discovery of new 
knowledge  and  intellectual  property  that  will  be  useful  in  developing  new  products  or  processes,  or  at  significantly  enhancing  existing  products  or 
production processes as well as expenditures incurred for the design and testing of product alternatives or construction of prototypes. All expenditures 
related to research and development activities of the Company are charged to operating expenses when incurred.

-17-

Advertising Expenses 

The Company expenses all advertising and promotional costs as incurred at the amount of $963,000, $882,000, and $922,000 in 2020, 2019, and 2018, 
respectively; of which, advertising expenses amounted to $198,000, $261,000, and $287,000 in 2020, 2019 and 2018, respectively.

Pension Costs 

For  employees  under  defined  contribution  pension  plans,  pension  costs  are  recorded  based  on  the  actual  contributions  made  to  employees’  pension 
accounts. For employees under defined benefit pension plans, pension costs are recorded based on the actuarial calculation.

Government Grants

Government grants received by the Company to assist with specific research and development activities are recognized as non-operating income. If the 
Company has an obligation to repay any of the funds provided by government grants regardless of the outcome of the research and development, the 
Company estimates that obligation and recognizes the amount as a liability.

On  March  27,  2020,  the  U.S.  federal  government  enacted  the  Coronavirus  Aid,  Relief,  and  Economic  Security  Act  (“CARES  Act”),  which  includes 
provision  for  a  Paycheck  Protection  Program  (“PPP”)  administered  by  the  U.S.  Small  Business  Administration  (“SBA”).  The  PPP  allows  qualifying 
businesses  to  borrow  up  to  $10  million  calculated  based  on  qualifying  payroll  costs.  The  loan  is  guaranteed  by  the  federal  government  and  does  not 
require collateral. On May 6, 2020, the Company entered into a PPP Loan with Union Bank, pursuant to the PPP under CARES for $604,000. The PPP 
Loan funds were received on May 6, 2020. The PPP Loan contains events of default and other provisions customary for a loan of this type. The PPP 
provides  that  (1)  the  use  of  PPP  Loan  amount  shall  be  limited  to  certain  qualifying  expenses,  (2)  100  percent  of  the  principal  amount  of  the  loan  is 
guaranteed by the SBA and (3) an amount up to the full principal amount plus accrued interest may qualify for loan forgiveness in accordance with the 
terms of CARES. The Company was in full compliance with all covenants with respect to the PPP Loan and used the full proceeds of the PPP Loan in 
accordance  with  the  provisions  of  CARES.  The  Company  submitted  the  PPP  Loan  Forgiveness  Application  and  Union  Bank  has  approved  the 
forgiveness  amount  requested  in  the  application  in  November  2020.  In  December  2020,  Union  Bank  has  received  the  payment  from  SBA,  and  the 
Company then accounted for the PPP Loan as an in-substance government grant and represent PPP loan income as other income.

Income Tax

The provision for income tax represents income tax paid and payable for the current year plus the changes in the deferred income tax assets and liabilities 
during the relevant years. Deferred income tax assets and liabilities are recognized for the future tax consequences attributable to differences between the 
financial statement carrying amount of existing assets and liabilities and their respective tax bases, and operating loss and tax credit carryforwards. The 
Company believes that uncertainty exists regarding the realizability of certain deferred income tax assets and, accordingly, has established a valuation 
allowance for those deferred income tax assets to the extent the realizability is not deemed to be more likely than not. Deferred income tax assets and 
liabilities are measured using enacted tax rates.

The  Company  utilizes  a  two-step  approach  to  recognizing  and  measuring  uncertain  tax  positions.  The  first  step  is  to  evaluate  the  tax  position  for 
recognition by determining if the weight of available evidence indicates it is more likely than not that the position will be sustained in a dispute with 
taxing  authorities,  including  resolution  of  related  appeals  or  litigation  processes,  if  any.  The  second  step  is  to  measure  the  tax  benefit  as  the  largest 
amount which is more than 50% likely of being realized upon ultimate settlement, if any.

Stock-based Compensation

The Company grants stock options to its employees and certain non-employees and estimates the fair value of share-based payment awards on the date of 
grant using an option-pricing model. The value of the portion of the award that is ultimately expected to vest is recognized as expense ratably over the 
requisite service periods. The Company has elected to use the Black-Scholes option pricing model to determine the fair value of stock options on the date 
of grant. The Company also grants RSUs to its employees and the RSUs are measured based on the fair market value of the underlying stock on the date 
of grant.

-18-

Foreign Currency Transactions 

The functional currency is the local currency of the respective entities. Foreign currency transactions are recorded at the rate of exchange in effect when 
the transaction occurs. Gains or losses, resulting from the application of different foreign exchange rates when cash in foreign currency is converted into 
the  entities’  functional  currency,  or  when  foreign  currency  receivable  and  payable  are  settled,  are  credited  or  charged  to  income  in  the  period  of 
conversion or settlement. At year-end, the balances of foreign currency monetary assets and liabilities are recorded based on prevailing exchange rates 
and any resulting gains or losses are credited or charged to non-operating income or loss.

Translation of Foreign Currency Financial Statements

The reporting currency of the Company is the US dollar. Accordingly, the financial statements of the foreign subsidiaries are translated into US dollars at 
the  following  exchange  rates:  assets  and  liabilities  -  current  rate  on  balance  sheet  date;  shareholders’  equity  -  historical  rate;  income  and  expenses  - 
weighted average rate during the year. The resulting translation adjustment is recorded as a separate component of shareholders’ equity.

Comprehensive Income (Loss)

Comprehensive income (loss) represents net income (loss) plus the results of certain changes in shareholders’ equity during a period from non-owner 
sources.

Recently adopted accounting pronouncements

On January 1, 2019, the Company adopted ASC Topic 842, “Leases”, using the modified retrospective transition method applied to contracts that were 
not complete as of the adoption date. Consolidated financial results for reporting periods beginning after January 1, 2019 are presented under ASC Topic 
842, while prior period amounts continue to be reported in accordance with ASC Topic 840, “Leases”.

The adoption of the new standard resulted in the recognition of $1,265,000 of lease liabilities with corresponding lease assets on January 1, 2019. The 
standard did not materially impact the Company’s results of operations and had no impact on cash flows.

On January 1, 2020, the Company adopted the amendment on the impairment of financial instruments that are not measured at fair value through profit 
and  loss.  The  amendment  introduces  a  current  expected  credit  loss  ("CECL")  model  based  on  expected  losses  rather  than  incurred  losses  to  estimate 
credit  losses  on  financial  instruments  measured  at  amortized  cost  and  requires  a  broader  range  of  reasonable  and  supportable  information  to  estimate 
expected credit loss. In addition, under the amendment, an entity recognizes an allowance for expected credit losses on financial instruments measured at 
amortized cost and available-for-sale debt securities rather than the current methodology of delaying recognition of credit losses until it is probable a loss 
has been incurred. The adoption of the amendments did not have a material impact on the Company’s financial position, results of operations, cash flow 
and financial statement disclosures.

In March 2020, the FASB issued an accounting update which provides optional expedients and exceptions to applying the guidance on contract, hedging 
relationships,  and  other  transactions,  to  simplify  the  accounting  for  transitioning  from  the  London  Interbank  Offered  Rate  (“LIBOR”)  or  another 
reference rates expected to be discontinued because of reference rate reform, to alternative reference rates. This amendment is effective for all entities 
upon its issuance; if elected, it is to be applied prospectively through December 31, 2022. The adoption of this amendment did not have a material impact 
on the Company’s results of operations, financial position, cash flow or financial statement disclosures.

-19-

Recently issued accounting pronouncements not yet adopted

In December 2019, the FASB issued an accounting update which eliminated certain exceptions to the general principles in ASC 740, such as recognizing 
deferred taxes for equity investments, the incremental approach to performing intra-period tax allocation, and calculating income taxes in interim periods. 
The standard also simplified income tax accounting for franchise taxes that are partially based on income, transactions with a government that result in a 
step-up in the tax basis of goodwill, separate financial statements of legal entities that are not subject to tax, and enacted changes in tax laws in interim 
period. This amendment is effective for fiscal years beginning after December 15, 2020. Early adoption is permitted. The adoption of this amendment is 
not expected to have a material impact on the Company’s financial position, results of operations, cash flow or financial statement disclosures.

3. FAIR VALUE MEASUREMENTS

The Company measures its cash equivalents and marketable securities at fair value. Fair value is an exit price, representing the amount that would be 
received  to  sell  an  asset  or  paid  to  transfer  a  liability  in  an  orderly  transaction  between  market  participants.  As  such,  fair  value  is  a  market-based 
measurement  that  should  be  determined  based  on  assumptions  that  market  participants  would  use  in  pricing  an  asset  or  liability.  The  Company  also 
determines the fair value of long-term investments and long-lived assets whenever events or changes in circumstances indicate the carrying value may 
not  be  recoverable.  A  three-tier  fair  value  hierarchy  is  established  as  a  basis  for  considering  such  assumptions  and  for  inputs  used  in  the  valuation 
methodologies in measuring fair value:

Level 1 –
Level 2 –
Level 3 –

Observable inputs such as quoted prices for identical instruments in active markets;
Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly;
Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

Assets and liabilities measured at fair value on recurring and nonrecurring bases were as follows:

Items measured at fair value on a recurring basis on December 31, 2020

Cash and cash equivalents
Money market funds

Short-term investments

Fair Value Measurements at the End of the 
Reporting Period

Level 1

Level 2

Level 3

Total

(In Thousands)

Total 
Losses

$

- $

171 $

-

$

171

Time deposits with original maturity of more than 3 months but less than 

12 months

$

29,054 $

- $

-

$

29,054

Items measured at fair value on a recurring basis on December 31, 2019

Cash and cash equivalents
Money market funds

Short-term investments

Time deposits with original maturity of more than 3 months but less than 

12 months

Long-term investments

Excelliance MOS Co., Ltd (“EMC”)

- $

169 $

-

$

169

35,693 $

3,180 $

- $

- $

-

-

$

$

35,693

3,180

$

$

$

-20-

Items measured at fair value on a nonrecurring basis on 

December 31, 2020

Long-term investments

Sigurd Microelectronics (Cayman) Co., Ltd. (“Sigurd Cayman”)

$

-

$

-

$

992

$

992

$

-

Level 1

Level 2

Level 3

Total

Total 
Losses

Items measured at fair value on a nonrecurring basis on 

December 31, 2019

Long-term investments

Philip Ventures Enterprise Fund (“PVEF”)
Sigurd Cayman

$

$

-
-

-

$

$

-
-

-

$

$

$

-
992

$

-
992

992

$

992

$

(30)
-

(30)

The fair value estimates in the money market funds are based on observable market information rather than market quotes. Accordingly, the estimates of 
fair value for cash and cash equivalents were determined based on Level 2 inputs on December 31, 2020 and 2019, respectively.

4. CASH AND CASH EQUIVALENTS 

Time deposits
Savings and checking accounts
Money market funds
Petty cash

Total

5. SHORT-TERM INVESTMENTS 

Time deposits with original maturity of more than 3 months but less than 12 months

6.

INVENTORIES 

Finished goods
Work-in-process
Raw materials
Provisions for obsolete inventories

Total

-21-

(In Thousands)

December 31

2020

2019

$

6,513
12,045
171
23

3,080
7,434
169
13

18,752

$

10,696

(In Thousands)

December 31

2020

2019

29,054

$

35,693

(In Thousands)

December 31

2020

2019

$

6,328
6,108
6,781
(6,629)

12,588

$

5,016
3,143
7,269
(6,632)

8,796

$

$

$

$

$

The  Company  periodically  evaluates  inventory  and  establishes  provisions  for  obsolescence,  excess  quantities,  slow-moving  goods,  and  for  other 
impairment of value. The following table shows the movement of provisions for obsolete inventories.

Balance at beginning of year
Charge to cost and expenses
Other deductions

Balance at end of year

7. PREPAID EXPENSES AND OTHER CURRENT ASSETS

Other receivable (Note 11)
Prepaid expenses
Payment in advance
Interest receivable
VAT refunds receivable
Other

Total

(In Thousands)

2020

Years Ended December 31
2019

2018

$

$

$

6,632
405
(408)

$

6,597
1,359
(1,324)

6,629

$

6,632

$

5,664
1,328
(395)

6,597

(In Thousands)

December 31

2020

2019

$

1,482
724
216
101
1
24

77
767
264
131
10
46

2,548

$

1,295

$

$

In the fourth quarter of 2020, the Company purchased raw materials from foundry suppliers on behalf of Big Moment Hong Kong Limited (“BMT HK”), 
an affiliate  of Dashun Technology Limited (“Dashun”) and collected the related amounts from BMT HK accordingly. $1,132,000 and $629,000 were 
recorded  as  other  receivables  and  other  payables,  respectively,  as  of  December  31,  2020.  Please  refer  to  Note  11  for  the  streamline  activities  with 
Dashun.

8. LONG-TERM INVESTMENTS

Sigurd Cayman
EMC

Total

(In Thousands)

December 31

2020

2019

$

$

$

992
-

992

$

992
3,180

4,172

In  July  2008,  the  Company  invested  in  preferred  shares  of  Sigurd  Cayman  for  $5,700,000  to  become  a  strategic  partner  of  Sigurd  Microelectronics 
Corporation (“Sigurd”). Upon completion of the transaction, the Company obtained a 19.54% ownership of Sigurd Cayman. Prior to 2018, the Company 
accounts for the investment under the cost method as the Company does not have significant influence over operating and financial policies of Sigurd 
Cayman and management of Sigurd holds the controlling interests. In April 2010, the Company participated in another round of preferred shares issued 
by  Sigurd  Cayman  amounting  to  $1,500,000.  In  September  2015,  Sigurd  Cayman  announced  the  liquidation  of  its  wholly  owned  subsidiary,  Sigurd 
Microelectronics (Wuxi) Co., Ltd. (“Sigurd Wuxi”), whose sales and operations account for the majority business of Sigurd Cayman. In view of Sigurd 
Cayman’s recurring financial losses and its decision to cease operations of Sigurd Wuxi, the Company determined that the decline in fair value of the 
investment in Sigurd Cayman was other-than-temporary and recognized an impairment charge of $4,835,000 in 2015. In December 2017, Sigurd Cayman 
completed a share buyback program. Accordingly, a portion of Company’s shares in Sigurd Cayman were returned in exchange for cash of $1,133,000. 
Under ASU 2016-01, the Company utilizes the measurement alternative to account for equity investments in privately held companies without readily 
determinable fair values, and the Company revalued and recorded an impairment adjustment of $240,000 on December 31, 2018. As of December 31, 
2020, the Company held 8,557,577 shares, which represented an 18.88% ownership of Sigurd Cayman. No impairment losses were incurred related to 
investment in Sigurd Cayman in 2020.

-22-

In November 2005, the Company invested in PVEF, a fund management company in Singapore, with an investment amount of $585,000 (SG$1,000,000) 
for 20 units in the placement at SG$50,000 per unit. The Company further invested $357,000 (SG$500,000) in June 2010 to obtain 30 units. A portion of 
the shares were redeemed by PVEF in November 2012, and May 2015 at a cost of $445,000 and $330,000, respectively, and the carrying cost of the 
Company is reduced to $167,000 accordingly. In December 2015, in view of the fund’s liquidation and continuous lower net asset value than the cost, the 
Company  determined  that  the  decline  in  fair  value  of  the  investment  in  PVEF  was  other-than-  temporary  and  recognized  an  impairment  charge  of 
$118,000.  A  portion  of  the  shares  were  further  redeemed  by  PVEF,  gains  of  20,000  and  12,000  were  recognized  for  2017  and  2016,  respectively. 
Accordingly, the carrying cost of the investment was reduced to $36,000 as of December 31, 2017. The Company held a 5% interest in the fund as of 
December  31,  2018.  No  further  impairment  was  recognized  given  the  qualitative  assessment  made  by  the  Company  in  2018.  In  March  2019,  the 
liquidator of PVEF declared a final distribution and the fund would be dissolved at the expiration of 3 months from the date of the final meeting held in 
April 2019. As a result, the Company recorded an impairment charge of $30,000 which is the difference between carrying cost and the liquidation value.

The Company invested $1,960,000 (NT$62,900,000) in EMC’s 3,468,000 ordinary shares in June 2010. EMC is a fabless power device design company 
in Taiwan, specialized in power semiconductor process development, and the design of high efficiency power device and system. In January 2018, EMC 
successfully  listed  on  Taipei  Exchange.  The  Company  recognized  gains  on  its  quoted  market  price  to  record  the  changes  in  fair  value.  The  gain  of 
$10,156,000 and $818,000 and the loss of $79,000 on net fair value changes including a portion of disposal were recorded for the years ended December 
31, 2018, 2019, and 2020, respectively. The Company has sold all the remaining shares in 2020 and held no shares of EMC as of December 31, 2020.

9. PROPERTY AND EQUIPMENT, NET 

Cost

Land
Buildings
Equipment
Furniture and fixtures
Leasehold improvements
Transportation equipment
Property leased to others
ROU assets

Accumulated depreciation

Buildings
Equipment
Furniture and fixtures
Leasehold improvements
Transportation equipment
Property leased to others
ROU assets

Equipment pending for inspection

Total

$

(In Thousands)

December 31

2020

2019

$

2,510
6,066
19,659
734
2,335
784
4,466
4,156
40,710

2,228
16,724
668
1,936
538
621
1,244
23,959

515

2,510
6,066
19,350
705
2,541
655
4,242
3,699
39,768

2,088
17,387
633
2,117
565
530
957
24,277

60

$

17,266

$

15,551

-23-

Depreciation expense recognized during the years ended December 31, 2020, 2019, and 2018, was approximately $1,322,000, $1,023,000, and $993,000, 
respectively.

In  the  third  quarter  of  2019,  the  Company  sold  two  building  units  in  Hsinchu,  Taiwan  and  a  net  gain  of  $500,000  was  recorded  for  the  year  ended 
December 31, 2019.

10. LEASES

The Company’s leases have remaining lease terms of less than one year to eight years. The Company’s lease terms do not include options to extend or 
terminate leases because the Company was not reasonably certain that it would exercise those options. Lease expense for minimum lease payments is 
recognized on a straight-line basis over the lease term. The Company’s lease agreements do not contain any variable lease payments, material residual 
value guarantees or material restrictive covenants.

The  table  below  presents  the  lease-related  assets  and  liabilities  recorded  on  the  consolidated  balance  sheets  as  of  December  31,  2020  and  2019, 
respectively:

(In Thousands)

Classification on Consolidated 
Balance Sheet

Years Ended December 31

2020

2019

Assets

Operating lease assets

Property and equipment, net

Liabilities

Current - operating
Noncurrent - operating

Total lease liabilities

Current lease liabilities
Noncurrent lease liabilities

$

$

$

Weighted-average remaining lease term - operating leases (years)
Weighted-average discount rate - operating leases (1)

2,912

865
2,091

2,956

$

$

$

5.02
2.84%

2,742

827
1,932

2,759

6.00
2.14%

(1) Upon adoption of ASC 842, discount rates used for existing leases were established on January 1, 2019, which was the date of the Company’s initial 
adoption of ASC 842. As most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on 
the rate of interest the Company would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms.

Supplemental information related to the Company’s operating leases for the year ended December 31, 2020 and 2019 is as follows:

Cash paid for operating leases

(In Thousands)

Years Ended December 31
2019
2020

$

1,614

$

1,648

Operating lease costs were $1,632,000 and $1,766,000 during the years ended December 31, 2020 and 2019, respectively. Short-term lease costs during 
the years ended December 31, 2020 and 2019 were immaterial to the consolidated financial statements.

-24-

Maturities of lease liabilities were as follows:

Year

2021
2022
2023
2024
2025
Thereafter

Total minimum lease payments

Less: amount of lease payments representing interest

Present value of future minimum lease payments

Less: current obligation under leases

Long-term lease obligations

11. OTHER ASSETS 

Deferred charges
Land use rights
Refundable deposits
Deferred income tax assets – noncurrent

Total

(In Thousands)

Operating Leases

$

$

917
689
508
229
144
476

2,963
(7)
2,956
(865)
2,091

(In Thousands)

December 31

2020

2019

$

$

$

3,194
649
474
52

4,369

$

1,240
668
427
91

2,426

Deferred charges are advanced payments for consulting, maintenance, and engineering license contracts and are amortized over the terms of the contracts 
from 2 to 5 years. Amortization expense of the deferred charges for the years ended December 31, 2020, 2019, and 2018, was approximately $1,884,000, 
$738,000, and $629,000, respectively.

In order to focus on high entry barrier and high margin mixed-signal design market, the Company in May of 2020 entered into two-year agreements with 
Dashun to streamline the power group, which comprised of the Company’s internal circuits products for smart phone and notebook business in China. 
Dashun was engaged to support the company’s existing power group customers in China by providing continuous product sales and related engineering 
services supports. The Company has paid $3,000,000 as prepayment of services (recoded as deferred charges) and amortized it on a straight-line basis 
over  two-year  service  lives.  Meanwhile,  the  Company  provides  the  support  service  of  operation  and  testing  to  the  products  designated  by  Dashun. 
Amounts under the agreement are to be received in installments by the end of April 2022 in accordance with an agreed upon collection schedule, which is 
started from May 2020, and the amount were $400,000 and $275,000 each quarter for the first and second year, respectively, and should be paid no later 
than two months by the end of each quarter. The receivable resulted from this contract for the year ended December 31, 2020 was $267,000 (recorded as 
other receivable).

In June of 2020, the Company sold related research and development, testing and office equipment scoping into the streamlined project to Beijing Big 
Moment  Technology  Co.,  Ltd.  (“BMT  Beijing”),  an  affiliate  of  Dashun,  with  the  amount  about  $140,000  collectively  and  a  net  gain  of  $5,000  was 
recorded  for  the  year  ended  December  31,  2020.  In  August  of  2020,  we  also  sold  certain  China  registered  patents  related  to  smart  phone  and  power 
products to BMT Beijing with the amount about $150,000.

-25-

Land use rights are recorded at cost less accumulated amortization. Amortization is provided on a straight-line basis over the term of the land use rights 
agreement which is 49.7 years. Amortization expense of the land use rights for the years ended December 31, 2020, 2019, and 2018, was approximately 
$19,000, $19,000, and $19,000, respectively.

12. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES 

Salaries, bonus and benefits
Engineering related expenses
Other payables (refer to Note 7)
Payable for acquisition of equipment
Legal and audit fees
Shipping expenses
Withholding tax payable
Warranty provision
Promotional expenses
Value-added tax payable
Other accrued expenses

Total

13. INCOME TAX

(In Thousands)

December 31

2020

2019

$

$

2,628
1,070
629
283
186
152
118
114
83
50
621

$

5,934

$

3,020
688
-
-
231
116
67
87
47
100
483

4,839

The Company is not subject to income or other taxes in the Cayman Islands. However, subsidiaries are subject to taxes of the jurisdiction where they are 
located.

Income (loss) before income taxes consisted of:

Cayman Islands
Foreign

Total

Income tax expense consisted of:

Current
Deferred

Total

(In Thousands)

2020

Years Ended December 31
2019

2018

4,169
2,895

$

(6,355) $
2,487

7,064

$

(3,868) $

277
2,952

3,229

(In Thousands)

2020

Years Ended December 31
2019

2018

$

942
(5)

937

$

1,304
(133)

$

1,171

$

1,296
(155)

1,141

$

$

$

$

-26-

The  Company  and  its  subsidiaries  file  separate  income  tax  returns.  The  applicable  statutory  income  tax  rate  in  the  Cayman  Islands  was  zero  for  the 
Company for the years being reported. The reconciliation between the provision for income taxes at the statutory rate and the provision for income taxes 
at the effective tax rate is as follows:

Tax expense at statutory rate
Increase (decrease) in tax resulting from:

Differences between Cayman and foreign tax rates
Withholding taxes on repatriation of subsidiary profits
Alternative Minimum Tax on EMC stock sales
Withholding taxes on interest income
Adjustments to prior years’ taxes
Changes in valuation allowances for deferred income tax assets
Changes in deferred income tax assets and liabilities
Other

Total

(In Thousands)

2020

Years Ended December 31
2019

2018

-

$

-

$

294
286
184
83
34
3
(8)
61

344
351
345
83
34
91
(224)
147

-

401
521
105
83
60
92
(247)
126

937

$

1,171

$

1,141

$

$

The deferred income tax assets and liabilities as of December 31, 2020 and 2019 consisted of the following:

Deferred income tax assets

Research and development credits
Depreciation and amortization
Accrued vacation and other expenses
Net operating loss carryforwards

Valuation allowance

Total net deferred income tax assets

Deferred income tax liabilities

Withholding taxes on repatriation of subsidiary profits
Unrealized foreign exchanges

(In Thousands)

December 31

2020

2019

$

$

$

$

$

6,908
102
41
23
7,074
(7,022)

52

$

545
-
545

$

$

6,850
150
82
28
7,110
(7,019)

91

586
3
589

The valuation allowance shown in the table above relates to net operating losses, credit carryforwards and temporary differences for which the Company 
believes that realization is not more than likely. The valuation allowance increased by $3,000, $91,000, and $92,000 for the years ended December 31, 
2020,  2019,  and  2018,  respectively.  The  changes  in  the  valuation  allowance  in  2020,  2019,  and  2018,  were  primary  due  to  the  fluctuations  in  R&D 
credits from O2Micro Inc. that could not be utilized.

As  of  December  31,  2020,  O2Micro,  Inc.  had  U.S.  federal  and  state  research  and  development  credit  carryforwards  of  approximately  $5,445,000  and 
$7,358,000, respectively. The U.S. federal research and development credit will expire from 2022 through 2039 if not utilized, while the state research 
and development credit will never expire. Utilization of the research and development credits may be subject to significant annual limitation due to the 
ownership change limitations provided by the U.S. Internal Revenue Code of 1986 and similar provisions in the State of California’s tax regulations. The 
annual limitation may result in the expiration of federal research and development credits before utilization.

-27-

As of December 31, 2020, the Company’s subsidiary had U.S. net operating loss carryforwards for California tax purpose of $326,000, which will expire, 
if not utilized beginning in 2028.

In  2018,  the  Income  Tax  Act  in  Taiwan  was  amended  and,  starting  from  January  1,  2019,  surcharge  of  profit-seeking  enterprise  income  tax  on 
undistributed earnings tax offset against dividend withholding for non-Taiwan resident was not available.

To  better  position  itself  for  the  future  growth  phase,  the  Company  considered  the  repatriation  of  the  earnings  from  subsidiaries  in  Taiwan  and  China 
beginning in the second quarter of 2015. As a result, deferred tax liabilities from withholding tax for the unremitted earnings in Taiwanese and Chinese 
subsidiaries have been recorded for $545,000 and $586,000 as of December 31, 2020 and 2019, respectively.

The Company files income tax returns in various foreign jurisdictions. The Company is generally no longer subject to income tax examinations by tax 
authorities for years prior to 2015 because of the statute of limitations.

14. RETIREMENT AND PENSION PLANS

The Company has a savings plan that qualifies under Section 401(k) of the US Internal Revenue Code. Participating employees may defer up to the US 
Internal Revenue Service statutory limit amounts of pretax salary. The Company may make voluntary contributions to the savings plan but has made no 
contributions since the inception of the savings plan in 1997.

The Company also participates in mandatory pension funds and social insurance schemes, if applicable, for employees in jurisdictions in which other 
subsidiaries or offices are located to comply with local statutes and practices. For the years ended December 31, 2020, 2019, and 2018, pension costs 
charged to income in relation to the contributions to these schemes were $252,000, $1,148,000, and $1,236,000, respectively. The Company adopted a 
defined  benefit  pension  plan  and  established  an  employee  pension  fund  committee  for  certain  employees  of  O2Micro-Taiwan  who  are  subject  to  the 
Taiwan Labor Standards Law (“Labor Law”) to comply with local requirements. This benefit pension plan provides benefits based on years of service 
and average salary computed based on the final six months of employment. The Labor Law requires the Company to contribute between 2% to 15% of 
employee  salaries  to  a  government  specified  plan,  which  the  Company  currently  makes  monthly  contributions  equal  to  2%  of  employee  salaries. 
Contributions are required to be deposited in the name of the employee pension fund committee with the Bank of Taiwan.

The government is responsible for the administration of all the defined benefit plans for the companies in Taiwan under the Labor Standards Law. The 
government also sets investment policies and strategies, determines investment allocation and selects investment managers. As of December 31, 2020, 
and 2019, the asset allocation was primarily in equity securities, debt securities and cash. Furthermore, under the Labor Standards Law, the rate of return 
on assets shall not be less than the average interest rate on a two-year time deposit published by the local banks and the government is responsible for any 
shortfall  in  the  event  that  the  rate  of  return  is  less  than  the  required  rate  of  return.  However,  information  on  how  investment  allocation  decisions  are 
made, inputs and valuation techniques used to measure the fair value of plan assets, the effect of fair value measurements using significant unobservable 
inputs on changes in plan assets for the period and significant concentrations of risk within plan assets is not fully made available to the companies by the 
government. Therefore, the Company is unable to provide the required fair value disclosures related to pension plan assets.

The percentage of major category of plan assets as of December 31, 2020 and 2019 were as follows:

Cash
Debt securities 
Equity securities

-28-

December 31

2020

2019

12%
28%
49%

17%
29%
45%

Changes in projected benefit obligation and plan assets for the years ended December 31, 2020, 2019 and 2018 were as follows:

Projected benefit obligation, beginning of the year
Service cost
Interest cost
Actuarial loss (gain)
Settlement
Effect of changes in foreign exchange rate

Projected benefit obligation, end of the year

Fair value of plan assets, beginning of the year
Employer contributions
Actual return on plan assets
Effect of changes in foreign exchange rate

Fair value of plan assets, end of the year

The component of net periodic benefit cost was as follows:

Service cost
Interest cost
Expected return on plan assets
Amortization of net pension loss
Curtailment or settlement loss

Net periodic benefit cost

The funded status of the plan was as follows:

Accumulated benefit obligation

Project benefit obligation
Plan assets at fair value

Funded status of the plan

2020

Years Ended December 31
2019

2018

(In Thousands)

$

$

$

979
3
7
19
(26)
52

1,034

765
19
31
42

$

$

$

1,018
3
7
(34)
(38)
23

979

697
19
31
18

857

$

765

$

1,026
4
10
10
-
(32)

1,018

671
20
27
(21)

697

2020

Years Ended December 31
2019

2018

(In Thousands)

$

3
7
(13)
2
3

2

$

$

3
7
(12)
6
5

9

$

4
10
(10)
6
-

10

$

$

$

$

$

$

(In Thousands)

December 31

2020

2019

$

$

(889) $

(1,034)
857

(177) $

(837)

(979)
765

(214)

-29-

The actuarial assumptions to determine the benefit obligations were as follows:

Discount rate
Rate of compensation increases

The actuarial assumptions to determine the net periodic benefit cost were as follows:

Discount rate
Rate of compensation increases
Expected long-term rate of return on plan assets

December 31

2020

2019

0.3%
2.0%

0.7%
2.0%

2020

Years Ended December 31
2019

2018

0.7%
2.0%
1.8%

0.8%
2.0%
1.8%

1.0%
2.0%
1.5%

The expected long-term rate of return shown for the plan assets was deliberated based on the ten-year average return on plan assets of Trust Department 
of Bank of Taiwan and the average two-year deposit interest rate of local banking institutions.

Estimated future benefit payments are as follows:

Year

2021
2022
2023
2024
2025 and thereafter

15. STOCK-BASED COMPENSATION

Employee Stock Purchase Plan

(In Thousands)

$

44
179
33
131
318

In May 2009, the Board adopted the 2009 Employee Stock Purchase Plan (“2009 Purchase Plan”) The 2009 Purchase Plan permitted eligible employees 
to purchase ordinary shares through payroll deductions, which may range from 1% to 10% of an employee’s regular base pay. The 2009 Purchase Plan 
was implemented through consecutive offer periods of 3 months’ duration commencing on the first day of February, May, August and November. Under 
the 2009 Purchase Plan, ordinary shares may be purchased at a price equal to the lesser of 90% of the fair market value of the Company’s ordinary shares 
on the date of grant of the option to purchase (which is the first day of the offer period) or 90% of the fair market value of the Company’s ordinary shares 
on the applicable exercise date (which is the last day of the offer period). Employees may have elected to discontinue their participation in the purchase 
plan at any time; however, all of the employee’s payroll deductions previously credited to the employee’s account will be applied to the exercise of the 
employee’s option on the next exercise date. Participation ends automatically on termination of employment with the Company. The 2009 Purchase Plan 
has a term of 10 years, if not terminated earlier. A total of 25,000,000 ordinary shares were reserved for issuance under the 2009 Purchase Plan starting 
November 2009. As approved by the Annual General Meeting of Shareholders (“AGM”) held in June 2012 and June 2016, additional 15,000,000 and 
25,000,000 ordinary shares were reserved for issuance under the 2009 Purchase Plan, respectively. From 2018 to 2020, 10,057,550 ordinary shares had 
been purchased under the 2009 Purchase Plan.

-30-

Stock Option Plans

The Board adopted the 2005 Share Option Plan (“2005 SOP”), which was effective on March 2, 2006. The adoption of the 2005 SOP also resulted in the 
Board terminating the 1997 Stock Plan and 1999 Stock Incentive Plan. The Company began issuing stock options solely under the 2005 SOP for up to 
100,000,000 ordinary shares. As approved by the EGM held on May 30, 2009, the number of shares available for issue was increased from 100,000,000 
to 175,000,000 shares. As approved by the AGM held on June 22, 2012, additional 50,000,000 ordinary shares were reserved for issuance under the 2005 
SOP. Under the terms of the 2005 SOP, stock options are generally granted at fair market value of the Company’s ordinary shares. The stock options 
have a contractual term of 8 years from the date of grant and vest over a requisite service period of 4 years. As of December 31, 2020, the number of 
stock options outstanding and exercisable was 74,404,550 and 74,404,550, respectively, under the 2005 SOP.

In 2015, the Board adopted the 2015 Stock Incentive Plan (“2015 SIP”), which was approved by the Shareholders in July 2015, and replaced the 2005 
SOP after it expired on March 2, 2016. The 2015 SIP succeeded the 2005 SOP and the 2005 Share Incentive Plan (“2005 SIP”). The 2015 SIP provides 
for the granting to employees of incentive stock options, restricted shares, cash dividend equivalent rights, RSUs or stock appreciation rights or similar 
right (collectively referred to as “Awards”) to the employees, directors and consultants of the Company. The maximum aggregate number of new shares 
reserved for issuance pursuant to all Awards under the 2015 SIP is 100,000,000 ordinary shares, plus the remaining balance rolled into the 2015 SIP from 
the 2005 SOP and 2005 SIP, respectively. The maximum number of and kind of Awards granted under the 2015 SIP shall not each exceed 125,000,000 
ordinary  shares.  The  Awards  granted  are  generally  vested  over  a  requisite  service  period  of  4  years.  As  of  December  31,  2020,  the  number  of  stock 
options outstanding and exercisable was 97,689,100 and 56,096,650, respectively, under the 2015 SIP.

A summary of the Company’s stock option activity under the plans as of December 31, 2020, and changes during the year then ended is presented as 
follows:

Outstanding Options, January 1, 2020

Granted
Exercised
Forfeited or expired

Number of
Options Shares

$
167,717,500
37,715,000
$
(10,907,100) $
(22,431,750) $

Outstanding Options, December 31, 2020

172,093,650

Vested and Expected to Vest Options on December 31, 2020

159,575,389

Exercisable Options on December 31, 2020

130,501,200

$

$

$

Weighted
Average
Exercise
Price

Weighted
Average
Remaining
Contract Life

Aggregate
Intrinsic
Value

0.0558
0.0980
0.0436
0.0918

0.0611

0.0583

0.0518

3.78

3.48

2.62

$

$

$

21,072,962

19,998,043

17,201,270

The total intrinsic value of options exercised during the years ended December 31, 2020, 2019, and 2018 was $774,100, $800, and $1,800, respectively.

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The following table summarizes information about outstanding and vested stock options:

Range of Exercise Prices

$0.0265 - $0.0314
$0.0318 - $0.0472
$0.0506 - $0.0690
$0.0750 - $0.0800
$0.1270 - $0.1270

Number
Outstanding

47,139,400
31,971,300
31,535,400
35,437,550
26,010,000

Balance, December 31, 2020

172,093,650

Options Outstanding
Weighted
Average
Remaining
Contractual
Life

Options Exercisable

Weighted
Average
Exercise
Price

Number
Exercisable
and Vested

Weighted
Average
Exercise
Price

3.87
5.02
1.18
1.83
7.92

3.78

$
$
$
$
$

$

0.0307
0.0371
0.0575
0.0783
0.1270

0.0611

41,635,550
21,626,250
31,266,900
35,437,550
534,950

130,501,200

$
$
$
$
$

$

0.0307
0.0389
0.0574
0.0783
0.1270

0.0518

The Company calculated the fair value of each option grant on the date of grant using the Black-Scholes option pricing model that use the assumptions in 
the following table. Risk-free interest rate is based on the US Treasury yield curve in effect at the time of grant. The Company uses the simplified method 
to estimate the expected life because the options are considered as plain vanilla share-based payment awards. Expected volatilities are based on historical 
volatility of stock prices for a period equal to the options’ expected term. The dividend yield is zero as the Company has never declared or paid dividends 
on the ordinary shares or other securities and does not anticipate paying dividends in the foreseeable future.

Stock Options
Years Ended December 31
2019

2020

2018

2020

Employee Stock Purchase Plan
Years Ended December 31
2019

2018

Risk-free interest rate
Expected life (in years)
Volatility
Dividend

0.21% -
5
42% -
-

1.32% 1.39% -
5
42%
-

52%

2.43% 2.51% -
5
39% -
-

2.85% 0.09% -
-
42% 37% -
-

0.25

1.57% 1.52% -
-
0.26
104% 44% -
-

0.25

2.43% 1.48% -
-
0.26
58% 29% -
-

0.25

2.32%
0.26
59%

The weighted-average grant-date fair value of options granted during the years ended December 31, 2020, 2019, and 2018 was $0.0980, $0.0128, and 
$0.0114,  respectively.  The  weighted-average  fair  value  of  options  granted  under  the  2009  Purchase  Plan  during  the  years  ended  December  31,  2020, 
2019, and 2018 was $0.0148, $0.0060, and $0.0062, respectively.

Share Incentive Plan

The  Board  adopted  the  2005  SIP,  which  was  effective  on  March  2,  2006.  The  2005  SIP  provides  for  the  grant  of  restricted  shares,  RSU,  share 
appreciation  rights  and  dividend  equivalent  rights  up  to  75,000,000  ordinary  shares.  As  approved  by  the  EGM  held  on  May  30,  2009,  the  number  of 
shares  available  for  issue  was  increased  from  75,000,000  to  125,000,000  shares.  As  approved  by  the  AGM  held  on  June  22,  2012,  an  additional 
62,500,000 ordinary shares were reserved for issuance under the 2005 SIP. These awards under 2005 SIP may be granted to employees, directors and 
consultants of the Company. The granted RSUs are generally vested over a requisite service period of 4 years. In 2015, the Board adopted the 2015 SIP, 
which was approved by the Shareholders in July 2015, and replaced the 2005 SIP after it expired on March 2, 2016. Please refer to above discussions for 
2015 SIP.

-32-

A  summary  of  the  status  of  the  Company’s  RSUs  as  of  December  31,  2020,  and  changes  during  the  year  ended  December  31,  2020,  is  presented  as 
follows:

Nonvested on January 1, 2020

Granted
Vested
Forfeited and expired

Nonvested on December 31, 2020

Number of
Outstanding
RSUs

Weighted
Average
Grant-Date
Fair Value

$
89,445,350
47,194,250
$
(38,713,500) $
(5,584,300) $

92,341,800

$

0.0338
0.0288
0.0335
0.0335

0.0314

As of December 31, 2020, there was $2,706,000 of total unrecognized compensation cost related to nonvested share-based compensation arrangements 
granted under the plans including stock options and RSUs. The cost is expected to be recognized over a weighted-average period of 2.90 years. The total 
fair value of RSUs vested during the years ended December 31, 2020, 2019, and 2018 was $1,298,000, $1,065,000, and $1,196,000, respectively.

Cash received from option exercise under all share-based payment arrangements for the years ended December 31, 2020, 2019, and 2018, was $553,000, 
$116,000, and $96,000, respectively.

Ordinary Shares Reserved

As of December 31, 2020, ordinary shares reserved for future issuance were as follows:

Outstanding stock options
Outstanding RSUs
Shares reserved for future Awards grants
Shares reserved for Employee Stock Purchase Plan

Total

172,093,650
92,341,800
43,375,200
13,511,400

321,322,050

Shares issued for the exercise of stock options, Employee Stock Purchase Plan and shares vested under restricted stock units are mainly from the treasury 
shares.

16. EARNINGS (LOSS) PER SHARE

Basic  earnings  (loss) per  share is  calculated  by  dividing net  income  (loss) by  the weighted average  number of ordinary shares outstanding during the 
period. Diluted earnings (loss) per share is calculated by dividing net (loss) income by the weighted average number of ordinary and dilutive ordinary 
equivalent shares outstanding during the period, using the treasury stock method for options.

A reconciliation of the numerator and denominator of basic and diluted earnings (loss) per share calculations was as follows:

2020

Years Ended December 31
2019

2018

Net income (loss) (in thousands)

$

6,127

$

(5,039) $

2,088

Weighted average shares outstanding (in thousands) – basic

1,348,899

1,316,032

1,300,795

Effect of dilutive securities:

Options and RSUs (in thousands)

87,309

-

30,027

Weighted average shares outstanding (in thousands) – diluted

1,436,208

1,316,032

1,330,822

Earnings (loss) per share

Basic
Diluted

$
$

-
-

$
$

-
-

$
$

-
-

-33-

Certain outstanding options and RSUs were excluded from the computation of diluted EPS since  their effect would have been anti-dilutive. The anti-
dilutive stock options excluded and their associated exercise prices per share were 91,498,000 shares at $0.0266 to $0.1270 as of December 31, 2020, 
167,717,500 shares at $0.0266 to $0.1636 as of December 31, 2019, and 160,388,575 shares at $0.0270 to $0.1636 as of December 31, 2018. The anti-
dilutive RSUs excluded were 4,830,000 shares, 89,445,350 shares, and 6,214,513 shares as of December 31, 2020, 2019, and 2018, respectively.

17. COMMITMENTS 

Purchase obligations and commitments include payments due under various types of license, maintenance and support agreements with contractual terms 
from one to three years. As of December 31, 2020, those purchase commitments were as follows:

Year
2021
2022
2023

Total

18. CONTINGENCIES

Legal Proceeding 

(In Thousands)

$

$

478
368
148

994

The Company was involved in the litigation matter relating to its civil contract, as detailed below.

Taiwan Fertilizer Co., Ltd. (“TFC”) v. O2Micro Electronics, Inc. (“O2Micro-Taiwan”)
TFC filed a civil lawsuit for breach of Residential Lease Contract in Taipei District Court against O2Micro-Taiwan, requesting O2Micro-Taiwan to pay 
compensatory damages. As of December 31, 2019, the accrued liability for estimated loss contingencies that we believe were probable and for which a 
reasonable estimate could be made was $93,000, recorded in accrued expenses and other current liabilities. The verdict affirmed on September 10, 2020. 
The Court supported the Company’s defense; thus the Company did not have to pay to TFC. The Company then reversed the accrued expenses and other 
current liabilities accordingly in September 2020.

The Company, as a normal course of business, is a party to litigation matters, legal proceedings, and claims. These actions may be in various jurisdictions 
and  may  involve  patent  protection  and/or  infringement.  While  the  results  of  such  litigations  and  claims  cannot  be  predicted  with  certainty,  the  final 
outcome of such matters is not expected to have a material adverse effect on its consolidated financial position or results of operations. No assurance can 
be given, however, that these matters will be resolved without the Company becoming obligated to make payments or to pay other costs to the opposing 
parties, with the potential for having an adverse effect on the Company’s financial position or its results of operations. No provision for any litigation has 
been provided as of December 31, 2020.

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19. FINANCIAL INSTRUMENTS

Information on the Company’s financial instruments was as follows:

Assets

Cash and cash equivalents
Restricted cash
Short-term investments
Long-term investments

(In Thousands)

December 31

2020

Carrying
Amount

Fair
Value

2019

Carrying
Amount

Fair
Value

$

$

18,752
37
29,054
992

$

18,752
37
29,054
992

$

10,696
35
35,693
4,172

10,696
35
35,693
4,172

The carrying amounts of cash and cash equivalents, restricted cash and short-term investments reported in the consolidated balance sheets approximate 
their estimated fair values.

Long-term  investments  in  equity  securities  are  reported  at  fair  value  for  the  year  ended  December  31,  2020  and  2019.  The  Company  utilizes  the 
measurement alternative for equity investments in privately held companies without readily determinable fair values and revalues these investments at 
cost less impairment, plus or minus observable price changes (in orderly transactions) of an identical or similar investment of the same issuer.

20. SEGMENT INFORMATION 

The  Company  does  not  identify  or  allocate  assets  by  operating  segment,  nor  does  the  chief  operating  decision  maker  (“CODM”)  evaluate  operating 
segments  using  discrete  as  set  information.  The  Company  does  not  have  inter-segment  revenue,  and,  accordingly,  there  is  none  to  be  reported.  The 
Company does not allocate gains and losses from interest and other income, or income taxes to operating segments. The accounting policies for segment 
reporting are the same as for the Company as a whole.

Revenues by geographic region are based on the location to which our products or services are delivered and were as follows:

China
Taiwan
Malaysia
Singapore
Japan
Korea
U.S.A.
Other

Total

(In Thousands)

2020

Years Ended December 31
2019

2018

$

$

$

70,306
2,579
1,895
1,216
1,189
719
22
409

$

52,233
2,016
1,287
648
1,354
950
2,077
363

78,335

$

60,928

$

55,303
1,987
1,396
959
1,485
1,201
68
315

62,714

-35-

Revenues by product category were as follows:

Integrated Circuits
Mixed-signal
Analog
Digital
Licensing revenue

Total

2020

Years Ended December 31
2019

2018

(In Thousands)

$

$

$

43,113
35,152
-
70

$

34,944
23,901
3
2,080

78,335

$

60,928

$

39,603
23,063
48
-

62,714

For the years ended December 31, 2020, 2019 and 2018, two customers accounted for 10% or more of revenues. The percentage of revenues to these 
customers was as follows:

Customer A
Customer B

2020

Years Ended December 31
2019

2018

14%
11%

14%
12%

13%
11%

Long-lived assets consisted of property and equipment and were as follows based on the physical location of the assets at the end of each year:

Taiwan
U.S.A.
China
Other

Total

(In Thousands)

2020

December 31
2019

2018

$

$

$

8,859
4,138
4,171
98

$

7,621
4,015
3,661
254

6,037
4,029
3,620
28

17,266

$

15,551

$

13,714

-36-