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O2Micro International Limited

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FY2021 Annual Report · O2Micro International Limited
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CONTENTS 
 
CORPORATE INFORMATION 
1 
CHAIRMAN’S STATEMENT 
2 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 
4 
FINANCIAL HIGHLIGHTS 
6 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

- 1 - 
CORPORATE INFORMATION 
Independent Auditor  
Deloitte & Touche  
 
 
 
 
Legal counsel 
 
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 
 
Board of Directors 
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 
ADR Division 
One Wall Street, 29th Floor 
New York, New York 10286 USA 
 
 
Share Registrar 
Maples Fund Services (Cayman) Limited 
P.O. Box 1093  
Boundary Hall, Cricket Square 
Grand Cayman KY1-1102  
Cayman Islands 
 
 
Corporate Headquarters  
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 
 
 
 
Other Addresses 
3118 Patrick Henry Drive 
Santa Clara, CA 95054 USA 
Phone: (408) 987-5920 
Fax: (408) 987-5929 
3rd Floor, 1, Sec 4 
Nanjing East Road 
Taipei, Taiwan 105 
Phone: (886) 2-2545-9095 
Fax: (886) 2-2547-1721  
 
 
Registered Office 
Maples Corporate Services Limited  
P.O. Box 309  
Ugland House,  
Grand Cayman KY1-1104 
Cayman Islands  
 
 
 
 
 
 

- 2 - 
CHAIRMAN’S STATEMENT 
To Our Shareholders 
 
Fiscal 2021 was another strong year for O2Micro. Revenues were $101.1 million, up 29.1% from $78.3 million in 
2020 and we reported full year GAAP net income of $12.1 million, or $0.39 earnings per fully diluted ADS, up 97.7% from 
$6.1 million, or $0.21 earnings per fully diluted ADS a year ago. After a similarly strong fiscal 2020, 2021 was even better 
as both our power management and intelligent lighting segments continued to register strong progress. We finished 2021 
in strong financial condition, with $50 million in unrestricted cash and short-term investments and no debt. At year end, 
O2Micro had 315 employees, 56% of which are engineers. 
 
We finished strong in 2021, however we expect 2022 to bring challenges to the entire tech sector. The COVID-19 
pandemic continues to compel all of us to adapt to new ways of living, working and entertaining. Supply chains around 
the globe, showing sign of improvement, may see continued impact by both geopolitical pressures, and as economies 
struggle balancing infection rates against public safety, yet through these headwinds we will continue to strive to capitalize 
on the trends transforming the world around us. 
 
Our fundamental technology supports new and advanced products in both the Intelligent Lighting and the Battery 
Management markets. New products are targeted at more complex Consumer, Industrial and Automotive markets that 
will broaden our market focus and expand our customer base. These new products are based on our unique technology 
backed by a large intellectual property patent portfolio that is significantly larger than most companies our size. 
 
While we continue to expand our revenue base, our major customers can carry our company to more new design 
wins for innovative products as we increase our penetration of their product portfolios. Major OEMs that already use our 
products and battery management technology include Bissell, Black & Decker, Bosch, Dyson, Electrolux, Hitachi, Lexy, LG, 
Makita, Murata, Panasonic, Philips, Samsung, Sharp and TTI and Toshiba. Major OEMs that use our lighting products 
include BOE, Dell, HP, Hisense, Honda, Hon Hai Foxconn, Lenovo, Panasonic, Samsung, Sharp, Skyworth, TCL and Toyota. 
 
Intelligent Lighting 
 
In fiscal 2021, our Intelligent lighting product line continued to grow as we aggressively developed new products, 
many of which are specifically focused on serving rapidly expanding applications, such as advanced lighting systems using 
mini-LED. 
 
In fact, the demand for our lighting products is at record high levels. For instance, monitor demand has been very 
strong due to the proliferation of larger screens and the increase in gaming activity. Both are positive trends for O2Micro. 
Larger screens require multiple parts while gaming applications require the highest level of monitor response, such as that 
uniquely available through our multi-scan technology. Our multi-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. 
 
Our latest IC we rolled out for this market has the ability to control the dimming through either analog function 
or pulse width function (PWF). The two in one mode control further simplifies the TV system design architecture because 
it enables the manufacturer to support different types of panel dimming solution with only one IC. 
 
We believe the use of mini-LED technology will initially become the trend for notebooks, from there migrating to 
certain high end desktop monitors. 
 
In displays, mini-LEDs significantly increase the number of zones, which will reduce ‘blooming’ - the halo effect 
you get from lower performing displays. Also, the mini-LED lighting has enhanced contrast performance level similar to 
OLED, high brightness characteristics and long life time. They can also reduce power consumption. 
 
Since mini-LED technology offers much smaller size compared to conventional package LCD size, it also gives the 
TV system designer more space to design the dimming layout. 
 
For O2Micro, mini-LED will both increase our ASP as well as enable the regular LCD panel to reach the 
performance levels of like OLED, which OLED is still very costly due to the production challenges. This opens the 

- 3 - 
 
opportunity for new technology that is more cost effective with similar performance characteristics. We own several 
patents that protect our proprietary mini-LED technology. 
 
Power Management Systems 
 
O2Micro experienced strong growth in our Power Management business in 2021. And we continue to 
aggressively develop new products for our battery management product lines, with an emphasis on serving rapidly 
expanding applications for lithium-ion battery applications. 
 
As battery technology improves, offering more power and longer life, there has been rapid growth in the 
previously “corded” products that are now adopting cordless, battery power. Floor care products, personal hygiene items, 
such as battery-powered curling irons, garden and professional tools, both consumer and from the construction industry 
are just some of the products that are adopting battery power. At the same time, eBike sales are on the rise, and there are 
plans for more innovative household energy storage and industry grade intra-power systems. 
 
Where O2Micro excels is in our battery management technology, which provides the “brains” that controls the 
flow of electricity from the battery to the device. In this high growth industry, innovative technology is needed to improve 
both the density and quality of new batteries, which means ICs that require higher voltage resolution, better current 
sensing, and more accurate temperature measurement. For instance, we’re excited that we have several updates to our 
ARM based Battery Management Unit (BMU) rolling out. 
 
The price of Lithium-ion battery cell declined by 97% in the past two decades while the price for lithium battery 
dropped to $137 per kilowatt hour in 2020, and both are expected to drop further in the coming year. This makes lithium-
ion batteries one of the most efficient energy storage devices worldwide. 
 
Consequently, we believe the opportunity for our 2022 portfolio of battery products will continue to be bright, 
more diverse, and support the almost exponential growth in battery capacity production. 
 
This will necessitate higher energy density, higher resolution and faster Analog to Digital converters. Our AFE 
Analog Front End and the BMU was designed with 14-bit high accuracy AD converter could meet customer needs. Our 
high accuracy AD converter reached 15 millivolt resolution performance. In addition, on October 1, 2021, a new power 
delivery standard was announced, expanding to 240 watts from the existing 68-watt standard – USB4. Together with our 
new level of performance as well as 5G deployment, this will enable power tools to be connected, IoT devices, which will 
further increase our opportunity in power tools in the construction industry. 
 
Growth Opportunities under head wind challenges 
 
The post COVID-19 economy presents challenges including, not only limited to, channels inventory corrections, 
back to office working style which soften PC sales, high inflation rate, geopolitical barriers, COVID-19 logistic restriction, 
our R&D team in China has been in different level quarantine from time to time and our supply chains struggling to meet 
delivery. 
 
Our strong financial position has enabled us to accelerate expansion of our production capability to support 
ongoing growth. This includes expansion into new wafer suppliers, as well as expansion into additional processes at 
existing suppliers that can enhance our existing wafer supply. 
 
Our design win activity has remained strong in both intelligent lighting and battery management as we continue 
to aggressively develop new products focused on serving rapidly expanding applications for lithium battery applications, 
as well as advance lighting systems using mini-LED's. 
 
Given the challenge in the macro economy environment, we are continuously investing in R&D, new patents, 
expanding our supply chain with more second-source suppliers, improving our testing capabilities and growing our 
capacity. 
 
Rich Patent Portfolio 
 
O2Micro has a rich patent portfolio. Both our LED backlighting and battery technology group received new 
patents in 2021. Patents not only protect our interests, internationally, but they provide a basis to pursue relief from those 

- 4 - 
 
that may try to violate our valuable intellectual property. 
 
Wrap Up 
 
There are three major strategic priorities to sustain our growth momentum. 
 
Our top priority number is to secure suppliers for both wafer as well as packaging and testing our ICs. We have 
developed second sources for most all of our needs and continue to explore opportunities to further strengthen our supply 
infrastructure with relationships both domestically and internationally. 
 
Second is customer relations. With good customer relations we get the insight into their future needs that helps 
us plan and invest in new technologies that anticipate future demand. This is a point of emphasis, and we are working 
hard to strengthen these relationships even as the pandemic challenges conventional tactics. 
 
And, finally, is people. Engineering talent, especially analog engineering talent, has been in short supply even 
before the COVID-19 pandemic. So, we continue to invest in our engineering talent. We are focused on creating rewarding 
career paths for our employees, adding to our training programs, including recruiting new graduates, and providing them 
with rapid training. 
 
Given our excellent technology in key growth areas, and excellent customer positioning, we are confident of our 
ability to continue to grow long-term revenues within this customer base, while also expanding to additional major 
customers with technologies they need today, as well as into the future. 
 
 
 
Sterling Du 
Chairman of the Board 
Chief Executive Officer

- 5 - 
 
O2Micro International Limited and Subsidiaries 
 
Consolidated Financial Statements as of  
December 31, 2021 and 2020 and for the Years Ended December 31, 
2021, 2020 and 2019, and  
Report of Independent Registered Public 
Accounting Firm 
 

6 
 
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, 2021 and 2020, 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, 2021, and 
the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated 
financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2021 
and 2020, and the result of its operations and its cash flows for each of the three years in the period ended December 31, 
2021, in conformity with accounting principles generally accepted in the United States of America. 
 
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(“PCAOB”), the Company’s internal control over financial reporting as of December 31, 2021, based on the criteria 
established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the 
Treadway Commission, and our report dated April 15, 2022, expressed an unqualified opinion on the Company’s internal 
control over financial reporting. 
 
Basis for Opinion 
 
These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to 
express an opinion on the Company’s consolidated 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 consolidated 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 consolidated 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 consolidated 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 consolidated 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 consolidated 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 consolidated 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 
consolidated 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. 
 

- 7 - 
 
Inventories - Provisions for Obsolete Inventories - Refer to Notes 2 and 6 to the consolidated 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 $6,062 thousand as of December 31, 2021. 
 
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  
April 15, 2022 
 
We have served as the Company’s auditor since 1998. 
 

- 8 - 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 
 
To the Shareholders and the Board of Directors of O2Micro International Limited 
 
Opinion on Internal Control over Financial Reporting 
 
We have audited the internal control over financial reporting of O2Micro International Limited and subsidiaries (the 
“Company”) as of December 31, 2021, based on criteria established in Internal Control - Integrated Framework (2013) issued 
by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Company 
maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021, based on 
criteria established in Internal Control - Integrated Framework (2013) issued by COSO. 
 
We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(PCAOB), the consolidated financial statements as of and for the year ended December 31, 2021, of the Company and our 
report dated April 15, 2022, expressed an unqualified opinion on those consolidated financial statements. 
 
Basis for Opinion 
 
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its 
assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s 
Annual Report on Internal Control over Financial Reporting.  Our responsibility is to express an opinion on the Company’s 
internal control over financial reporting based on our audit. 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 audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform 
the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained 
in all material respects.  Our audit included obtaining an understanding of internal control over financial reporting, 
assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal 
control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances.  
We believe that our audit provides a reasonable basis for our opinion. 
 
Definition and Limitations of Internal Control over Financial Reporting 
 
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of consolidated financial statements for external purposes in 
accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes 
those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly 
reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions 
are recorded as necessary to permit preparation of consolidated financial statements in accordance with generally accepted 
accounting principles, and that receipts and expenditures of the company are being made only in accordance with 
authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention 
or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect 
on the consolidated financial statements.  
 
Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, 
projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.  
/s/ Deloitte & Touche  
Taipei, Taiwan  
Republic of China  
April 15, 2022 
 

 
- 9 - 
 
FINANCIAL HIGHLIGHTS 
O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES 
CONSOLIDATED BALANCE SHEETS 
(In Thousand US Dollars, Except Per Share Amounts and Share Data) 
 
 
December 31 
ASSETS 
 
2021 
2020 
 
 
 
 
CURRENT ASSETS 
 
 
 
Cash and cash equivalents (notes 3 and 4) 
 
  $ 
20,780   $ 
18,752 
Restricted cash 
 
   
39    
37 
Short-term investments (notes 3 and 5) 
 
   
29,186    
29,054 
Accounts receivable, net  
 
   
18,784    
16,430 
Inventories (note 6) 
 
   
19,523    
12,588 
Prepaid expenses and other current assets (note 7) 
 
   
2,087    
2,548 
Total current assets 
 
   
90,399    
79,409 
 
 
 
 
LONG-TERM INVESTMENTS (notes 8) 
 
   
992    
992 
 
 
 
 
PROPERTY AND EQUIPMENT, NET (notes 9 and 10) 
 
   
23,611    
17,266 
 
 
 
 
OTHER ASSETS (note 11) 
 
   
3,340    
4,369 
 
 
 
 
TOTAL ASSETS 
 
  $ 118,342   $ 102,036 
 
 
 
 
LIABILITIES AND SHAREHOLDERS’ EQUITY 
 
 
 
 
 
 
 
CURRENT LIABILITIES 
 
 
 
Accounts payable  
 
  $ 
9,175   $ 
7,995 
Income tax payable 
 
   
307    
272 
Lease liabilities (note 10) 
 
   
1,076    
865 
Accrued expenses and other current liabilities (note 12) 
 
   
5,773    
5,934 
Total current liabilities 
 
   
16,331    
15,066 
 
 
 
 
LONG-TERM LIABILITIES 
 
 
 
Accrued pension liabilities (note 14) 
 
   
147    
177 
Deferred income tax liabilities (note 13) 
 
   
537    
545 
Lease liabilities (note 10) 
 
   
1,775    
2,091 
Other liabilities 
 
   
68    
68 
Total long-term liabilities 
 
   
2,527    
2,881 
 
 
 
 
Total liabilities 
 
   
18,858    
17,947 
 
 
 
 
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, 2021 and 2020 
Outstanding – 1,424,760,750 and 1,361,886,000 shares as of December 31,  
 
2021 and 2020, respectively 
 
   
33    
33 
Additional paid-in capital 
 
   
143,540    
143,422 
Accumulated deficits  
 
   
(35,158)    
(46,744) 
Accumulated other comprehensive income  
 
   
5,873    
5,740 
Treasury stock – 244,275,850 and 307,150,600 shares as of December 31,  
 
2021 and 2020, respectively 
 
   
(14,804)    
(18,362) 
 
 
 
 
Total shareholders’ equity  
 
   
99,484    
84,089 
 
 
 
 
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY 
 
  $ 118,342   $ 102,036 
 
 
 
 
The accompanying notes are an integral part of the consolidated financial statements. 

 
- 10 - 
 
O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES 
 
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) 
(In Thousand US Dollars, Except Per Share Amounts and Share Data) 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
OPERATING REVENUES 
  $ 
101,096   $ 
78,335   $ 
60,928 
 
 
 
 
COST OF REVENUES 
   
48,206    
37,951    
28,960 
 
 
 
 
GROSS PROFIT 
   
52,890    
40,384    
31,968 
 
 
 
 
OPERATING EXPENSES 
 
 
 
Research and development (a) 
   
19,410    
17,119    
19,065 
Selling, general and administrative (a) 
   
21,623    
17,742    
19,286 
 
 
 
 
Total operating expenses 
   
41,033    
34,861    
38,351 
 
 
 
 
INCOME (LOSS) FROM OPERATIONS 
   
11,857     
5,523     
(6,383)  
 
 
 
 
NON-OPERATING INCOME 
 
 
 
Interest income 
   
249    
506    
543 
Foreign exchange gain (loss), net 
   
138    
(238)    
(162) 
Government grants 
   
391    
817    
204 
Net (loss) gain recognized on long-term investments 
(note 8) 
   
-    
(79)    
788 
Gain on sale of real estate (note 9) 
   
-    
-    
500 
Other, net  
   
450     
535     
642  
 
 
 
 
Total non-operating income  
   
1,228     
1,541     
2,515  
 
 
 
 
INCOME (LOSS) BEFORE INCOME TAX  
   
13,085     
7,064     
(3,868)  
 
 
 
 
INCOME TAX EXPENSE (note 13) 
   
972    
937    
1,171 
 
 
 
 
NET INCOME (LOSS) 
   
12,113     
6,127     
(5,039)  
 
 
 
 
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX 
 
 
 
 Foreign currency translation adjustments  
   
149    
1,082    
(85) 
Unrealized pension (loss) gain  
   
(16)    
4    
65 
 
 
 
 
Total other comprehensive income (loss) 
   
133    
1,086    
(20) 
 
 
 
 
COMPREHENSIVE INCOME (LOSS) 
  $ 
12,246   $ 
7,213   $ 
(5,059) 
 
(Continued) 

 
- 11 - 
 
O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES 
 
CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) 
(In Thousand US Dollars, Except Per Share Amounts and Share Data) 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
EARNINGS (LOSS) PER SHARE (note 16) 
 
 
 
Basic 
  $ 
0.01   $ 
-   $ 
- 
Diluted 
  $ 
0.01   $ 
-   $ 
- 
 
 
 
 
NUMBER OF SHARES USED IN EARNINGS (LOSS) PER 
SHARE CALCULATION: 
 
 
 
Basic (in thousands) 
   
1,418,541    
1,348,899    
1,316,032 
Diluted (in thousands) 
   
1,556,030    
1,436,208    
1,316,032 
 
 
 
 
EARNINGS (LOSS) PER ADS (note 16) 
 
 
 
Basic 
  $ 
0.43   $ 
0.23   $ 
(0.19) 
Diluted 
  $ 
0.39   $ 
0.21   $ 
(0.19) 
 
 
 
 
NUMBER OF ADS USED IN EARNINGS (LOSS) PER ADS 
CALCULATION: 
 
 
 
Basic (in thousands) 
   
28,371    
26,978    
26,321 
Diluted (in thousands) 
   
31,121    
28,724    
26,321 
 
 
 
 
(a) INCLUDES STOCK-BASED  
  COMPENSATION CHARGE AS FOLLOWS: 
 
 
 
Research and development 
  $ 
494   $ 
293   $ 
272 
Selling, general and administrative 
  $ 
1,384   $ 
1,121   $ 
1,190 
 
 
 
 
 
The accompanying notes are an integral part of the consolidated financial statements. 
(Concluded) 
 

 
- 12 - 
 
O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES 
 
CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY 
(In Thousand US Dollars, Except Share Data) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The accompanying notes are an integral part of the consolidated financial statements. 
 
 
 
 
 
 Accumulated Other Comprehensive Income 
 
 
 
 
Additional 
 
Cumulative 
Unrealized 
 
 
 
 
  
Ordinary Shares 
  
Paid – in 
Accumulated 
Translation 
Pension 
 
Treasury  
Shareholders’ 
 
Shares 
Amount 
Capital 
Deficits  
Adjustment 
Gain (Loss) 
Total 
Stock 
Equity 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
BALANCE, JANUARY 1, 2019 
   
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 
   
256,900 
   
- 
   
7 
   
-  
  
-    
-    
-  
  
- 
   
7 
Shares for Employee Stock Purchase Plan 
   
4,264,200 
   
- 
   
109 
   
-  
  
-    
-    
-  
  
- 
   
109 
Shares vested under restricted share units 
   
28,661,400 
   
1 
   
(1) 
   
-  
  
-    
-    
-  
  
- 
   
- 
Acquisition of treasury stock – 17,192,650 shares 
   
- 
   
- 
   
- 
   
-  
  
-    
-    
-  
  
(510) 
   
(510) 
Treasury stock reissued for: 
 
 
 
 
 
 
 
 
 
Exercise of stock options 
   
(256,900) 
   
- 
   
(16) 
   
-  
  
-    
-    
-  
  
16 
   
- 
Employee Stock Purchase Plan 
   
(4,264,200) 
   
- 
   
(122) 
   
(136)  
  
-    
-    
-  
  
258 
   
- 
Restricted share units 
   
(28,661,400) 
   
(1) 
   
(1,070) 
   
(686)  
  
-    
-    
-  
  
1,757 
   
- 
Stock-based compensation 
   
- 
   
- 
   
1,462 
   
-  
  
-    
-    
-  
  
- 
   
1,462 
Net loss for 2019 
   
- 
   
- 
   
- 
   
(5,039)  
  
-    
-    
-  
  
- 
   
(5,039) 
Pension gain 
   
- 
   
- 
   
- 
   
-  
  
-    
65    
65  
  
- 
   
65 
Foreign currency translation adjustments 
   
- 
   
- 
   
- 
   
-  
  
(85)    
-    
(85)  
  
- 
   
(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 
   
10,907,100 
   
- 
   
476 
   
-  
  
-    
-    
-  
  
- 
   
476 
Shares for Employee Stock Purchase Plan 
   
2,485,400 
   
- 
   
78 
   
-  
  
-    
-    
-  
  
- 
   
78 
Shares vested under restricted share units 
   
38,713,500 
   
1 
   
(1) 
   
-  
  
-    
-    
-  
  
- 
   
- 
Acquisition of treasury stock – 5,018,600 shares 
   
- 
   
- 
   
- 
   
-  
  
-    
-    
-  
  
(146) 
   
(146) 
Treasury stock reissued for: 
 
 
 
 
 
 
 
 
 
Exercise of stock options 
   
(10,907,100) 
   
- 
   
(634) 
   
(18)  
  
-    
-    
-  
  
652 
   
- 
Employee Stock Purchase Plan 
   
(2,485,400) 
   
- 
   
(78) 
   
(72)  
  
-    
-    
-  
  
149 
   
(1) 
Restricted share units 
   
(38,713,500) 
   
(1) 
   
(1,317) 
   
(1,008)  
  
-    
-    
-  
  
2,326 
   
- 
Stock-based compensation 
   
- 
   
- 
   
1,414 
   
-  
  
-    
-    
-  
  
- 
   
1,414 
Net income for 2020 
   
- 
   
- 
   
- 
   
6,127  
  
-    
-    
-  
  
- 
   
6,127 
Pension gain 
   
- 
   
- 
   
- 
   
-  
  
-    
4    
4  
  
- 
   
4 
Foreign currency translation adjustments 
   
- 
   
- 
   
- 
   
-  
  
1,082    
-    
1,082  
  
- 
   
1,082 
 
 
 
 
 
 
 
 
 
 
BALANCE, DECEMBER 31, 2020 
   
1,669,036,600 
   
33 
   
143,422 
   
(46,744)  
  
5,848    
(108)    
5,740  
  (18,362) 
   
84,089 
 
 
 
 
 
 
 
 
 
 
Issuance of: 
 
 
 
 
 
 
 
 
 
Shares for exercise of stock options 
   
31,670,950 
   
1 
   
1,626 
   
-  
  
-    
-    
-  
  
- 
   
1,627 
Shares for Employee Stock Purchase Plan 
   
1,068,250 
   
- 
   
126 
   
-  
  
-    
-    
-  
  
- 
   
126 
Shares vested under restricted share units 
   
34,819,500 
   
1 
   
(1) 
   
-  
  
-    
-    
-  
  
- 
   
- 
Acquisition of treasury stock – 4,683,950 shares 
   
- 
   
- 
   
- 
   
-  
  
-    
-    
-  
  
(482) 
   
(482) 
Treasury stock reissued for: 
 
 
 
 
 
 
 
 
 
Exercise of stock options 
   
(31,670,950) 
   
(1) 
   
(1,893) 
   
-  
  
-    
-    
-  
  
1,894 
   
- 
Employee Stock Purchase Plan 
   
(1,068,250) 
   
- 
   
(64) 
   
-  
  
-    
-    
-  
  
64 
   
- 
Restricted share units 
   
(34,819,500) 
   
(1) 
   
(1,554) 
   
(527)  
  
-    
-    
-  
  
2,082 
   
- 
Stock-based compensation 
   
- 
   
- 
   
1,878 
   
-  
  
-    
-    
-  
  
- 
   
1,878 
Net income for 2021 
   
- 
   
- 
   
- 
   
12,113  
  
-    
-    
-  
  
- 
   
12,113 
Pension loss 
   
- 
   
- 
   
- 
   
-  
  
-    
(16)    
(16)  
  
- 
   
(16) 
Foreign currency translation adjustments 
   
- 
   
- 
   
- 
   
-  
  
149    
-    
149  
  
- 
   
149 
 
 
 
 
 
 
 
 
 
 
BALANCE, DECEMBER 31, 2021 
   
1,669,036,600 
  $ 
33 
  $ 143,540 
  $ 
(35,158)  
$  
5,997   $ 
(124)   $ 
5,873  
 $ (14,804) 
  $ 
99,484 
 
 
 
 
 
 
 
 
 
 

 
- 13 - 
 
O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES 
 
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(In Thousand US Dollars) 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
CASH FLOWS FROM OPERATING ACTIVITIES 
 
 
 
Net income (loss) 
  $ 12,113   $ 
6,127   $ (5,039) 
Adjustments to reconcile net income (loss) to net cash generated from 
 (used in) operating activities: 
 
 
 
Depreciation and amortization 
   
4,349    
3,225    
1,780 
Stock-based compensation 
   
1,878    
1,414    
1,462 
Other income – government grants 
   
(391)    
(817)    
(204) 
Provisions for obsolete inventories  
   
800    
405    
1,359 
Loss (gain) on disposal of property and equipment, net 
   
22    
(189)    
2 
Deferred income taxes 
   
(6)    
(5)    
(133) 
Net loss (gain) recognized on long-term investments 
   
-    
79    
(788) 
Gain on sale of real estate 
   
-    
-    
(500) 
Changes in operating assets and liabilities: 
 
 
 
Accounts receivable, net 
   
(2,354)    
(6,095)    
1,053 
Inventories 
   
(7,735)    
(4,197)    
133 
Prepaid expenses and other current assets 
   
461    
(1,276)    
981 
Deferred charges 
   
(393)    
(3,836)    
(571) 
Operating lease right-of-use assets 
   
98    
(169)    
(1,477) 
Accounts payable 
   
1,180    
3,128    
285 
Income tax payable 
   
35    
(339)    
198 
Government grants 
   
391    
817    
204 
Accrued expenses and other current liabilities 
   
117    
808    
661 
Operating lease liabilities 
   
(105)    
197    
1,494 
Accrued pension liabilities 
   
(46)    
(33)    
(42) 
Other liabilities 
   
-    
3    
3 
 
 
 
 
Net cash generated from (used in) operating activities 
   
10,414    
(753)    
861 
 
 
 
 
CASH FLOWS FROM INVESTING ACTIVITIES 
 
 
 
Acquisition of: 
 
 
 
Short-term investments 
   (10,404)    
(4,491)    (34,649) 
Property and equipment 
   
(8,806)    
(2,476)    
(1,672) 
(Increase) decrease in other assets 
   
(816)    
(47)    
6 
Proceeds from: 
 
 
 
Cash received on maturity of short-term investments 
   
10,453    
11,418    
4,953 
Disposal of property and equipment 
   
137    
331    
1 
Disposal of long-term investments 
   
-    
3,124    
7,061 
Sale of real estate 
   
-    
-    
2,169 
 
 
 
 
Net cash (used in) provided by investing activities 
   
(9,436)    
7,859    (22,131) 
 
 
 
 
CASH FLOWS FROM FINANCING ACTIVITIES 
 
 
 
Acquisition of treasury stock 
   
(482)    
(146)    
(510) 
Proceeds from:  
 
 
 
Exercise of stock options 
   
1,627    
476    
7 
Issuance of ordinary shares under the Employee Stock Purchase Plan 
   
126    
77    
109 
 
 
 
 
Net cash provided by (used in) financing activities 
   
1,271    
407    
(394) 
 
 
 
 
(Continued) 

 
- 14 - 
 
O2MICRO INTERNATIONAL LIMITED AND SUBSIDIARIES 
 
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(In Thousand US Dollars) 
 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
EFFECTS OF CHANGES IN FOREIGN EXCHANGE RATE 
  $ 
(219)   $ 
545   $ 
(53) 
 
 
 
 
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED 
CASH 
   
2,030    
8,058    (21,717) 
 
 
 
 
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF THE YEAR    
18,789    
10,731    
32,448 
 
 
 
 
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF THE YEAR 
  $ 20,819   $ 18,789   $ 10,731 
 
 
 
 
SUPPLEMENTAL DISCLOSURES OF CASH FLOWS 
 
 
 
Cash paid for tax 
  $ 
942   $ 
1,223   $ 
1,171 
 
 
 
 
 
The accompanying notes are an integral part of the consolidated financial statements. 
(Concluded) 
 

 
- 15 - 
 
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. 
 
 
The COVID-19 pandemic did not materially and adversely impact the Company's overall operating results or 
business operations for the years ended December 31, 2021 and 2020. As of the date of issuance of these 
consolidated financial statements, the Company is not aware of any specific event or circumstance related 
to the pandemic that would require management to update the significant estimates and assumptions used 
in the preparation of the consolidated financial statements. As new events continue to evolve and additional 

 
- 16 - 
 
information becomes available, any changes to these estimates and assumptions will be recognized in the 
consolidated financial statements as soon as they become known. 
 
 
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, 2021, operating revenue generated from one customer accounted for 15% 
of the total; accounts receivable from the customer accounted for 17% of the total as of December 31, 2021. 
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. 
 
 
Additionally, for the year ended December 31, 2021, five vendors accounted for 20%, 19%, 19%, 11% and 
11% of the Company’s cost of goods sold, respectively; accounts payable from these five vendors accounted 
for 31%, 17%, 21%, 5% and 13%, respectively, of the total as of December 31, 2021. 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. 
 
 
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 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. 
 
 
Allowance for Credit Losses  
 
 
On January 1, 2020, the Company adopted Accounting Standards Update (“ASU”) 2016-13, Financial 
Instruments —Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial Instruments using 
the modified retrospective transition method. ASC 326 replaces the existing incurred loss impairment model 
with a forward-looking current expected credit loss ("CECL") methodology, which results in more timely 

 
- 17 - 
 
recognition of credit losses. The Company has developed a CECL model based on historical experience, the 
age of the accounts receivable balances, credit quality of its customers, current economic conditions, 
reasonable and supportable forecasts of future economic conditions, and other factors that may affect its 
ability to collect from customers. The Company considers historical collection rates, current financial status, 
macroeconomic factors, and other industry-specific factors when evaluating for current expected credit 
losses. Balances are written off when determined to be uncollectible. 
 
 
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. 
 
 
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 
 
The Company determines if an arrangement is a lease at inception. A lease exists when a contract conveys 
to the customer the right to control the use of an identified asset for a period of time in exchange for 
consideration. The definition of a lease embodies two conditions: (1) there is an identified asset in the 
contract that is land or a depreciable asset, and (2) the customer has the right to control the use of the 
identified asset. 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. 
 
 
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. 

 
- 18 - 
 
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. 
 
 
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 
 
 
The Company derives revenue from product sales and license. The Company determines revenue 
recognition through the following steps: (1) identification of the contract with a customer; (2) identification 
of the performance obligations in the contract; (3) determination of the transaction price; (4) allocation of 
the transaction price to the performance obligations in the contract; and (5) recognition of revenue when, 
or as, the Company satisfies a performance obligation. 
 
 
Product Sales 
 
 
The Company generates revenue primarily from product sales, either directly to a customer or through a 
distributor. Revenue from product sales is recognized upon transfer of control of promised products to direct 
end customers or distributor in an amount that reflects the consideration the Company expects to receive 
in exchange for those products. 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.  
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. 
 
 
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. 
 
 

 
- 19 - 
 
 
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. 
 
 
Advertising Expenses  
 
 
The Company expenses all advertising and promotional costs as incurred at the amount of $1,105,000, 
$963,000, and $882,000 in 2021, 2020, and 2019, respectively; of which, advertising expenses amounted to 
$204,000, $198,000, and $261,000 in 2021, 2020, and 2019, 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 

 
- 20 - 
 
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. 
 
 
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  
 
 
In December 2019, the Financial Accounting Standards Board (“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 did not have a material impact on the 
Company’s results of operations, financial position, cash flows or financial statement disclosures. 
 
 
In March 2020, the FASB issued an accounting update, which provides temporary optional expedients and 
exceptions on contract modifications and hedging accounting to ease the financial reporting burdens of the 
expected market transition from the London Interbank Offered Rate (“LIBOR”) to alternative reference rates. 
The amendments in this update can be applied to contract modifications and hedge accounting made until 
December 31, 2022. In January 2021, the FASB issued another accounting update to refine the scope of Topic 
848, which permits entities to elect certain optional expedients and exceptions when accounting for 
derivative contracts and certain hedging relationships affected by changes in the interest rates used for 
discounting cash flows, for computing variation margin settlements, and for calculating price alignment 
interest in connection with reference rate reform activities under way in global financial markets. The new 
guidance was effective upon issuance 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 flows or financial 
statement disclosures. 

 
- 21 - 
 
 
 
In December 2021, the SEC issued Staff Accounting Bulletin (“SAB”) No. 120, which provides guidance on 
the measurement and disclosure of share-based payment arrangements that are entered into when an 
entity is in possession of material non-public information, to which the market is likely to react positively 
when such information is announced. The SAB became effective immediately and is applied prospectively. 
The adoption did not have an impact on the Company’s consolidated financial statements. 
 
 
Recently issued accounting pronouncements not yet adopted 
 
 
In November 2021, the FASB issued an accounting update to increase transparency in financial reporting by 
requiring business entities to disclose, in notes to their financial statements, information about certain types 
of government assistance they receive. This amendment is effective for the Company’s financial statements 
issued for annual periods beginning after December 15, 2021. Early adoption is permitted. The adoption of 
this amendment is not expected to have a material impact on the Company’s results of operations, financial 
position, cash flows 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 –  Observable inputs such as quoted prices for identical instruments in active markets; 
 
Level 2 –  Inputs, other than the quoted prices in active markets, that are observable either directly or 
indirectly;  
 
Level 3 –  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: 
 
(In Thousands) 
 
 
 
Fair Value Measurements at the End of 
the Reporting Period 
 
 
Level 1 
Level 2 
Level 3 
Total 
Items measured at fair value on a recurring basis on 
December 31, 2021 
 
 
 
 
 
 
 
 
 
Cash and cash equivalents  
 
 
 
 
 
 Money market funds 
  $ 
- 
  $ 
170 
  $ 
- 
  $ 
170 
 
 
 
 
 
Short-term investments 
 
 
 
 
  Time deposits with original maturity of more than  
3 months but less than 12 months 
  $ 29,186 
  $ 
- 
  $ 
- 
  $ 29,186 
 
 
 
 
 
Items measured at fair value on a recurring basis on 
December 31, 2020 
 
 
 
 
 
 
 
 
 
Cash and cash equivalents 
 
 
 
 
 
 Money market funds 
  $ 
- 
  $ 
171 
  $ 
- 
  $ 
171 
 
 
 
 
 
Short-term investments 
 
 
 
 
 
 Time deposits with original maturity of more  
than 3 months but less than 12 months 
  $ 29,054 
  $ 
- 
  $ 
- 
  $ 29,054 
 
 
 
 
 

 
- 22 - 
 
 
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, 2021 and 2020, respectively. 
 
4. CASH AND CASH EQUIVALENTS  
(In Thousands) 
 
 
 
 
December 31 
 
 
 
2021 
2020 
 
 
 
 
 
 
Time deposits 
 
 
  $ 7,669 
  $ 6,513 
 
Savings and checking accounts 
 
 
   12,916 
   12,045 
 
Money market funds 
 
 
   
170 
   
171 
 
Petty cash 
 
 
   
25 
   
23 
 
 
 
 
 
 
Total 
 
 
  $ 20,780 
  $ 18,752 
 
 
 
 
 
 
5. SHORT-TERM INVESTMENTS  
 
(In Thousands) 
 
 
 
 
December 31 
 
 
 
2021 
2020 
 
 
 
 
 
 
Time deposits with original maturity of more than 
 
 3 months but less than 12 months 
 
 
  $ 29,186 
  $ 29,054 
 
 
 
 
 
 
6. INVENTORIES  
(In Thousands) 
 
 
 
 
December 31 
 
 
 
2021 
2020 
 
 
 
 
 
 
Finished goods 
 
 
  $ 10,451 
  $ 6,328 
 
Work-in-process 
 
 
   
5,818 
   
6,108 
 
Raw materials  
 
 
   
9,316 
   
6,781 
 
Provisions for obsolete inventories  
 
 
   (6,062) 
   (6,629) 
 
 
 
 
 
 
Total 
 
 
  $ 19,523 
  $ 12,588 
 
 
 
 
 
 
 
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. 
(In Thousands) 
 
 
 
Years Ended December 31 
 
 
2021 
2020 
2019 
 
 
 
 
 
 
Balance at beginning of year 
 
  $ 6,629 
  $ 6,632 
  $ 6,597 
 
Charge to cost and expenses 
 
   
800 
   
405 
   
1,359 
 
Other deductions 
 
   (1,367) 
   
(408) 
   (1,324) 
 
 
 
 
 
 
Balance at end of year 
 
  $ 6,062 
  $ 6,629 
  $ 6,632 
 
 
 
 
 
 
 

 
- 23 - 
 
7.  PREPAID EXPENSES AND OTHER CURRENT ASSETS 
(In Thousands) 
 
 
 
 
December 31 
 
 
 
2021 
2020 
 
 
 
 
 
 
Prepaid expenses 
 
 
  $ 
712 
  $ 
724 
 
Other receivable (note 11) 
 
 
   
514 
   
1,482 
 
VAT refunds receivable  
 
 
   
509 
   
1 
 
Payment in advance 
 
 
   
269 
   
216 
 
Interest receivable 
 
 
   
55 
   
101 
 
Other 
 
 
   
28 
   
24 
 
 
 
 
 
 
Total 
 
 
  $ 2,087 
  $ 2,548 
 
 
 
 
 
 
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, while $287,000 and $218,000 were recorded as other 
receivables and other payables, respectively, as of December 31, 2021. Please refer to Note 11 for the streamline 
activities with Dashun. 
 
 
8. LONG-TERM INVESTMENTS 
(In Thousands) 
 
 
 
December 31 
 
 
2021 
2020 
   
 
 
 
 
Sigurd Microelectronics (Cayman) Co., Ltd. (“Sigurd Cayman”) 
 
  $ 
992 
  $ 
992 
 
 
 
 
 
In July 2008, the Company invested in preferred shares of Sigurd Cayman to become a strategic partner of 
Sigurd Microelectronics Corporation (“Sigurd”). Under ASU 2016-01, the Company utilizes the measurement 
alternative to account for equity investments in privately held companies without readily determinable fair 
values. As of December 31, 2021, 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 2021. 
 
 
In November 2005, the Company invested in Philip Ventures Enterprise Fund (“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 held a 5% interest in the fund as of December 31, 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 Excelliance MOS Co., Ltd. (“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 $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, 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. 
 
 

 
- 24 - 
 
9. PROPERTY AND EQUIPMENT, NET 
(In Thousands) 
 
 
 
 
December 31 
 
 
 
2021 
2020 
 
Cost 
 
 
 
 
 
 
Land 
 
 
  $ 2,510 
  $ 2,510 
 
 
Buildings 
 
 
   
6,066 
   
6,066 
 
 
Equipment 
 
 
   25,983 
   19,659 
 
 
Furniture and fixtures 
 
 
   
693 
   
734 
 
 
Leasehold improvements 
 
 
   
2,999 
   
2,335 
 
 
Transportation equipment 
 
 
   
903 
   
784 
 
 
Property leased to others 
 
 
   
4,595 
   
4,466 
 
 
ROU assets  
 
 
   
4,418 
   
4,156 
 
 
 
   48,167 
   40,710 
 
 
 
 
 
 
Accumulated depreciation 
 
 
 
 
 
 
Buildings 
 
 
   
2,369 
   
2,228 
 
 
Equipment 
 
 
   17,919 
   16,724 
 
 
Furniture and fixtures 
 
 
   
623 
   
668 
 
 
Leasehold improvements 
 
 
   
2,106 
   
1,936 
 
 
Transportation equipment 
 
 
   
532 
   
538 
 
 
Property leased to others 
 
 
   
693 
   
621 
 
 
ROU assets  
 
 
   
1,604 
   
1,244 
 
 
 
   25,846 
   23,959 
 
 
 
 
 
 
Equipment pending for inspection 
 
 
   
1,290 
   
515 
 
 
 
 
 
 
Total 
 
 
  $ 23,611 
  $ 17,266 
 
 
 
 
 
 
Depreciation expense recognized during the years ended December 31, 2021, 2020, and 2019, was 
approximately $2,117,000, $1,322,000, and $1,023,000, 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, 2021 and 2020, respectively: 
(In Thousands) 
 
 
 
Classification on Consolidated 
Balance Sheet 
Years Ended December 31 
 
 
2021 
2020 
 
 
 
 
 
 
Assets 
 
 
 
 
 
Operating lease assets 
 
Property and equipment, net  
$ 
2,814  
$  
2,912 
 
Liabilities 
 
 
 
 
 
Current - operating 
 
Current lease liabilities 
 
$ 
1,076  
$  
865 
 
Noncurrent - operating 
 
Noncurrent lease liabilities 
 
  
1,775  
  
2,091 
 
 
 
 
 
 
Total lease liabilities 
 
 
 
 $ 2,851  
 $ 2,956 

 
- 25 - 
 
 
 
 
 
 
 
Weighted-average remaining lease term - operating leases 
 
4.13 years  
5.02 years 
 
Weighted-average discount rate - operating leases (1) 
 
  
2.84%  
  
2.84% 
 
(1) 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 years ended December 31, 
2021 and 2020 is as follows: 
(In Thousands) 
 
Years Ended December 31 
 
2021 
2020 
 
Cash paid for operating leases 
 
 $ 1,792 
 
 $ 1,614 
 
 
 
 
Operating lease costs were $1,824,000 and $1,632,000 during the years ended December 31, 2021 and 2020, 
respectively. Short-term lease costs during the years ended December 31, 2021 and 2020 were immaterial 
to the consolidated financial statements. 
 
Maturities of lease liabilities were as follows: 
(In Thousands) 
 
 
Year 
 
Operating Leases 
 
 
 
 
 
2022 
 
 $ 1,130 
 
2023 
 
  
770 
 
2024 
 
  
307 
 
2025 
 
  
162 
 
2026 
 
  
519 
 
 
 
Total minimum lease payments 
 
  
2,888 
 
Less: amount of lease payments representing interest 
 
  
(37) 
 
Present value of future minimum lease payments 
 
  
2,851 
 
Less: current obligation under leases 
 
  (1,076) 
 
Long-term lease obligations 
 
 $ 1,775 
 
 
 
11. OTHER ASSETS 
(In Thousands) 
 
 
 
 
December 31 
 
 
 
2021 
2020 
 
 
 
 
 
 
Deferred charges 
 
 
  $ 1,370 
  $ 3,194 
 
Refundable deposits (note 17) 
 
 
   
1,290 
   
474 
 
Land use rights 
 
 
   
630 
   
649 
 
Deferred income tax assets – noncurrent (note 13)  
 
 
   
50 
   
52 
 
 
 
 
 
 
Total 
 
 
  $ 3,340 
  $ 4,369 
 
 
 
 
 
 
 
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, 2021, 2020, and 2019, was approximately $2,213,000, $1,884,000, 
and $738,000, respectively. 
 

 
- 26 - 
 
 
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 receivables resulted from this contract for the years ended 
December 31, 2021 and 2020, were $183,000 and $267,000, respectively, (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. 
 
 
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, 2021, 2020, and 2019, were all approximately $19,000. 
 
12. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES  
(In Thousands) 
 
 
 
 
December 31 
 
 
 
2021 
2020 
 
 
 
 
 
 
Salaries, bonus and benefits 
 
 
  $ 3,613 
  $ 2,628 
 
Engineering related expenses 
 
 
   
465 
   
1,070 
 
Other payables (note 7) 
 
 
   
348 
   
629 
 
Legal and audit fees 
 
 
   
302 
   
186 
 
Shipping expenses 
 
 
   
169 
   
152 
 
Withholding tax payable  
 
 
   
151 
   
118 
 
Promotional expenses  
 
 
   
107 
   
83 
 
Warranty provision 
 
 
   
96 
   
114 
 
Value-added tax payable 
 
 
   
37 
   
50 
 
Payable for acquisition of equipment 
 
 
   
9 
   
283 
 
Other accrued expenses 
 
 
   
476 
   
621 
 
 
 
 
 
 
Total 
 
 
  $ 5,773 
  $ 5,934 
 
 
 
 
 
13. INCOME TAX 
 
 
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: 
(In Thousands) 
 
 
 
Years Ended December 31 
 
 
2021 
2020 
2019 
 
 
 
 
 
 
Cayman Islands 
 
  $ 9,601 
  $ 4,169 
  $ (6,355) 
 
Foreign 
 
   
3,484 
   
2,895 
   
2,487 
 
 
 
 
 
 
Total 
 
  $ 13,085 
  $ 7,064 
  $ (3,868) 

 
- 27 - 
 
 
 
 
 
 
 
Income tax expense consisted of: 
(In Thousands) 
 
 
 
Years Ended December 31 
 
 
2021 
2020 
2019 
 
 
 
 
 
 
Current 
 
  $ 
978 
  $ 
942 
  $ 1,304 
 
Deferred 
 
   
(6) 
   
(5) 
   
(133) 
 
 
 
 
 
 
Total  
 
  $ 
972 
  $ 
937 
  $ 1,171 
 
 
 
 
 
 
 
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: 
(In Thousands) 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
 
Tax expense at statutory rate 
  $ 
-   $ 
-   $ 
- 
 
Increase (decrease) in tax resulting from:  
 
 
 
 
 
Differences between Cayman and foreign tax rates 
   
525    
294    
344 
 
 
Withholding taxes on repatriation of subsidiary profits 
   
383    
286    
351 
 
 
Changes in valuation allowances for deferred income tax assets    
196    
3    
91 
 
 
Withholding taxes on interest income 
   
83    
83    
83 
 
 
Adjustments to prior years’ taxes 
   
15     
34     
34  
 
 
Alternative Minimum Tax on EMC stock sales 
   
-    
184    
345 
 
 
Changes in deferred income tax assets and liabilities 
   
(202)     
(8)     
(224)  
 
 
Other 
   
(28)    
61    
147 
 
 
 
 
 
Total 
  $ 
972   $ 
937   $ 1,171 
 
The deferred income tax assets and liabilities as of December 31, 2021 and 2020 consisted of the following: 
(In Thousands) 
 
 
 
December 31 
 
 
2021 
2020 
 
Deferred income tax assets 
 
 
 
 
 
Research and development credits 
 
  $ 7,062 
  $ 6,908 
 
 
Depreciation and amortization 
 
   
137 
   
102 
 
 
Accrued vacation and other expenses 
 
   
49 
   
41 
 
 
Net operating loss carryforwards 
 
   
20 
   
23 
 
 
   
7,268 
   
7,074 
 
Valuation allowance 
 
   (7,218) 
   (7,022) 
 
 
 
 
 
Total net deferred income tax assets 
 
  $ 
50 
  $ 
52 
 
 
 
 
 
Deferred income tax liabilities 
 
 
 
 
 
Withholding taxes on repatriation of subsidiary profits 
 
  $ 
537 
  $ 
545 
 
 
 
   
 
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 $196,000, $3,000, and $91,000 for the years ended December 31, 2021, 2020, and 
2019, respectively. The changes in the valuation allowance in 2021, 2020, and 2019, were primary due to 
the fluctuations in R&D credits from O2Micro Inc. that could not be utilized. 

 
- 28 - 
 
 
 
As of December 31, 2021, O2Micro, Inc. had U.S. federal and state research and development credit 
carryforwards of approximately $5,581,000 and $7,551,000, respectively. The U.S. federal research and 
development credit will expire from 2023 through 2040 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. 
 
 
As of December 31, 2021, the Company’s subsidiary had U.S. net operating loss carryforwards for California 
tax purpose of $282,000, which will expire, if not utilized beginning in 2028. 
 
 
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 $537,000 and $545,000 as of December 31, 2021 and 2020, 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 2016 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, 2021, 2020, and 2019, pension costs charged to income in 
relation to the contributions to these schemes were $1,029,000, $252,000, and $1,148,000, 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, 2021, and 2020, 
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, 2021 and 2020 were as follows: 
 
 
 
December 31 
 
 
2021 
2020 
 
 
 
 
 

 
- 29 - 
 
 
Cash 
 
   
19% 
   
12% 
 
Debt securities 
 
   
28% 
   
28% 
 
Equity securities 
 
   
43% 
   
49% 
 
 
Changes in projected benefit obligation and plan assets for the years ended December 31, 2021, 2020 and 
2019 were as follows: 
 
(In Thousands) 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
 
 
Projected benefit obligation, beginning of the year 
  $ 1,034 
  $ 
979 
  $ 1,018 
 
Service cost 
   
4 
   
3 
   
3 
 
Interest cost 
   
3 
   
7 
   
7 
 
Actuarial loss (gain) 
   
21 
   
19 
   
(34) 
 
Settlement 
   
(25) 
   
(26) 
   
(38) 
 
Effect of changes in foreign exchange rate 
   
30 
   
52 
   
23 
 
 
 
 
 
Projected benefit obligation, end of the year 
  $ 1,067 
  $ 1,034 
  $ 
979 
 
 
 
 
 
 
Fair value of plan assets, beginning of the year 
  $ 
857 
  $ 
765 
  $ 
697 
 
Employer contributions 
   
22 
   
19 
   
19 
 
Actual return on plan assets 
   
15 
   
31 
   
31 
 
Effect of changes in foreign exchange rate 
   
26 
   
42 
   
18 
 
 
 
 
 
Fair value of plan assets, end of the year 
  $ 
920 
  $ 
857 
  $ 
765 
 
 
 
 
 
 
The component of net periodic benefit cost was as follows: 
 
(In Thousands) 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
 
 
Service cost 
  $ 
4 
  $ 
3 
  $ 
3 
 
Interest cost 
   
3 
   
7 
   
7 
 
Expected return on plan assets 
   
(15) 
   
(13) 
   
(12) 
 
Amortization of net pension loss 
   
2 
   
2 
   
6 
 
Curtailment or settlement loss 
   
3 
   
3 
   
5 
 
 
 
 
 
Net periodic benefit (income) cost 
  $ 
(3) 
  $ 
2 
  $ 
9 
 
 
The funded status of the plan was as follows: 
 
(In Thousands) 
 
 
 
December 31 
 
 
2021 
2020 
 
 
 
 
 
 
Accumulated benefit obligation 
 
  $ 
(932) 
  $ 
(889) 
 
 
 
 
 
Project benefit obligation 
 
   (1,067) 
   (1,034) 
 
Plan assets at fair value 
 
   
920 
   
857 
 
 
 
 
 
Funded status of the plan 
 
  $ 
(147) 
  $ 
(177) 
 
 
 
 

 
- 30 - 
 
 
The actuarial assumptions to determine the benefit obligations were as follows:  
 
 
 
December 31 
 
 
2021 
2020 
 
 
 
 
 
 
Discount rate 
 
   
0.7% 
   
0.3% 
 
Rate of compensation increases 
 
   
2.0% 
   
2.0% 
 
 
The actuarial assumptions to determine the net periodic benefit cost were as follows:  
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
 
 
Discount rate 
   
0.3% 
   
0.7% 
   
0.8% 
 
Rate of compensation increases 
   
2.0% 
   
2.0% 
   
2.0% 
 
Expected long-term rate of return on plan assets 
   
1.8% 
   
1.8% 
   
1.8% 
 
 
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:  
(In Thousands) 
 
 
    Year 
 
 
 
 
2022 
 
 $ 
173 
 
2023 
 
  
36 
 
2024 
 
  
158 
 
2025 
 
  
27 
 
2026 and thereafter 
 
  
326 
 
 
 
15. STOCK-BASED COMPENSATION 
 
 
Employee Stock Purchase Plan 
 
 
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 2019 to 2021, 7,817,850 ordinary shares had been purchased under 
the 2009 Purchase Plan. 
 
 

 
- 31 - 
 
 
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, 2021, the number of stock options outstanding and exercisable was 
52,116,400 and 52,116,400, 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. As approved by the AGM held in July 2021, 
additional 100,000,000 ordinary shares were reserved for issuance under the 2015 SIP. 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, 2021, 
the number of stock options outstanding and exercisable was 103,281,400 and 62,845,750, respectively, 
under the 2015 SIP. 
 
 
A summary of the Company’s stock option activity under the plans as of December 31, 2021, and changes 
during the year then ended is presented as follows: 
 
 
 
Weighted 
Weighted 
 
 
 
Average 
Average 
Aggregate 
 
Number of  
Exercise 
Remaining 
Intrinsic 
 
Options Shares 
Price 
Contract Life 
Value 
 
 
 
 
 
 
Outstanding Options, January 1, 2021 
   
172,093,650   $ 0.0611 
 
 
 
 
Granted 
   
22,228,550   $ 0.1642 
 
 
 
 
Exercised 
   
(31,670,950)   $ 0.0513 
 
 
 
 
Forfeited or expired  
   
(7,253,450)   $ 0.1133 
 
 
 
 
 
 
 
 
Outstanding Options, December 31, 2021    
155,397,800   $ 0.0755 
   
3.61 
  $4,678,202 
 
 
 
 
 
 
Vested and Expected to Vest Options on 
 
 December 31, 2021 
   
144,959,889   $ 0.0716 
   
3.37 
  $4,587,846 
 
 
 
 
 
 
Exercisable Options on December 31, 2021    
114,962,150   $ 0.0588 
   
2.47 
  $4,198,094 
 
 
 
 
 
 
 
The total intrinsic value of options exercised during the years ended December 31, 2021, 2020, and 2019 
was $3,292,100, $774,100, and $800, respectively. 
 
 

 
- 32 - 
 
 
The following table summarizes information about outstanding and vested stock options: 
 
 
Options Outstanding 
Options Exercisable 
 
 
Weighted 
 
 
 
 
 
Average 
Weighted 
 
Weighted 
 
 
Remaining 
Average 
Number 
Average 
 
Number 
Contractual 
Exercise 
Exercisable 
Exercise 
 
Range of Exercise Prices 
Outstanding 
Life 
Price 
and Vested 
Price 
 
 
 
 
 
 
 
$0.0265 - $0.0314 
  39,467,850 
2.85 
 $ 
0.0309   37,170,250  $ 
0.0309 
 
$0.0318 - $0.0506 
  37,634,950 
3.13 
 $ 
0.0410   31,750,250  $ 
0.0424 
 
$0.0612 - $0.0800 
  35,893,450 
0.87 
 $ 
0.0779   35,700,500  $ 
0.0780 
 
$0.1270 - $0.1790 
  42,401,550 
7.06 
 $ 
0.1454   10,341,150  $ 
0.1428 
 
 
 
 
 
 
 
Balance, December 31, 2021 
 155,397,800 
3.61 
 $ 
0.0755  114,962,150  $ 
0.0588 
 
 
 
 
 
 
 
 
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 
Employee Stock Purchase Plan 
 
Years Ended December 31 
Years Ended December 31 
 
2021 
2020 
2019 
2021 
2020 
2019 
 
 
 
 
 
 
 
 
Risk-free interest rate 
0.45%-0.92% 0.21%-1.32% 
1.39%-2.43% 
0.04%-0.07% 
0.09%-1.57% 
1.52%-2.43% 
 
Expected life (in years) 
5  
5  
5  
0.25-0.26 
0.25-0.26 
0.25-0.26 
 
Volatility 
54%-56% 
42%-52% 
42% 
47%-97% 
37%-104% 
44%-58% 
 
Dividend 
- 
- 
- 
- 
- 
- 
 
 
The weighted-average grant-date fair value of options granted during the years ended December 31, 2021, 
2020, and 2019 was $0.1642, $0.0980, and $0.0128, respectively. The weighted-average fair value of options 
granted under the 2009 Purchase Plan during the years ended December 31, 2021, 2020, and 2019 was 
$0.0382, $0.0148, and $0.0060, 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.  
 

 
- 33 - 
 
 
A summary of the status of the Company’s RSUs as of December 31, 2021, and changes during the year 
ended December 31, 2021, is presented as follows:  
 
 
 
 
Weighted 
 
 
Number of 
Average 
 
 
Outstanding 
Grant-Date 
 
 
RSUs 
Fair Value 
 
 
 
 
 
Nonvested on January 1, 2021 
 
  92,341,800 
 $ 0.0314 
 
 
Granted 
 
  34,486,900 
 $ 0.1287 
 
 
Vested 
 
 (34,819,500)  $ 0.0335 
 
 
Forfeited and expired 
 
   (2,682,500)  $ 0.0407 
 
 
  
 
Nonvested on December 31, 2021 
 
  89,326,700 
 $ 0.0679 
 
 
  
 
 
As of December 31, 2021, there was $5,425,000 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 3.10 years. The total fair 
value of RSUs vested during the years ended December 31, 2021, 2020, and 2019 was $1,165,000, 
$1,298,000, and $1,065,000, respectively. 
 
 
Cash received from option exercise under all share-based payment arrangements for the years ended 
December 31, 2021, 2020, and 2019, was $1,753,000, $553,000, and $116,000, respectively. 
 
 
Ordinary Shares Reserved 
 
 
As of December 31, 2021, ordinary shares reserved for future issuance were as follows: 
 
 
Outstanding stock options 
   155,397,800 
 
Outstanding RSUs 
   89,326,700 
 
Shares reserved for future Awards grants 
   96,195,700 
 
Shares reserved for Employee Stock Purchase Plan 
   12,443,150 
 
 
 
Total 
   353,363,350 
 
 
 
 
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: 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
 
Net income (loss) (in thousands) 
  $ 12,113 
  $ 6,127 
  $ (5,039) 
 
 
 
 
 
Weighted average shares outstanding (in thousands) – basic 
  1,418,541 
  1,348,899 
  1,316,032 
 
 
 
 
 
 
 
 

 
- 34 - 
 
 
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 45,556,000 shares at $0.1270 to $0.1790 as of December 31, 2021, 91,498,000 shares at 
$0.0266 to $0.1270 as of December 31, 2020, and 167,717,500 shares at $0.0266 to $0.1636 as of December 
31, 2019. The anti-dilutive RSUs excluded were 11,366,000 shares, 4,830,000 shares, and 89,445,350 shares 
as of December 31, 2021, 2020, and 2019, 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, 2021, those 
purchase commitments were as follows: 
 
(In Thousands) 
 
 
Year 
 
 
 
2022 
 
 $ 
515 
 
2023 
 
  
285 
 
2024 
 
  
82 
 
 
 
Total  
 
 $ 
882 
 
Prepayment for foundry capacity 
 
 
In order to accommodate the anticipated product demand, the Company has entered into an agreement 
with a foundry provider to guarantee a specified portion of production capacity that shall be purchased from 
2022 to 2023. Under the agreement, the Company is required to make a payment in advance to undertake 
the purchase of this specified capacity, such payment is refundable once the arranged conditions are met. 
The prepayment is amounted to $790,000 and was included in the balance of refundable deposit as of 
December 31, 2021. The Company believes that the guaranteed purchase will be fulfilled. 
 
18. CONTINGENCIES 
 
 
Legal Proceeding  
 
 
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, 2021 and 2020. 
 
 
Effect of dilutive securities: 
 
 
 
 
 
Options and RSUs (in thousands) 
   137,489 
   87,309 
   
- 
 
 
 
 
 
Weighted average shares outstanding (in thousands) – diluted   1,556,030 
  1,436,208 
  1,316,032 
 
 
 
 
 
Earnings (loss) per share 
 
 
 
 
 
Basic 
  $ 
0.01 
  $ 
- 
  $ 
- 
 
 
Diluted 
  $ 
0.01 
  $ 
- 
  $ 
- 
 
 
 
 
 
 
Earnings (loss) per ADS 
 
 
 
 
 
Basic 
  $ 
0.43 
  $ 
0.23 
  $ (0.19) 
 
 
Diluted  
  $ 
0.39 
  $ 
0.21 
  $ (0.19) 
 
 
 
 

 
- 35 - 
 
19. FINANCIAL INSTRUMENTS 
 
 
Information on the Company’s financial instruments was as follows:  
 
(In Thousands) 
 
 
December 31 
 
2021 
2020 
 
Carrying 
Fair 
Carrying 
Fair 
 
Amount 
Value 
Amount 
Value 
 
Assets 
 
 
 
 
 
 
Cash and cash equivalents  
  $ 20,780 
  $ 20,780 
  $ 18,752 
  $ 18,752 
 
 
Restricted cash 
   
39 
   
39 
   
37 
   
37 
 
 
Short-term investments 
   29,186 
   29,186 
   29,054 
   29,054 
 
 
Long-term investments 
   
992 
   
992 
   
992 
   
992 
 
 
 
 
 
 
 
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. 
 
 
The Company utilizes the measurement alternative for long-term investments in 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: 
 
(In Thousands) 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
 
China 
  $ 
88,103 
  $ 
70,306 
  $ 
52,233 
 
Singapore 
   
2,598 
   
1,216 
   
648 
 
Taiwan 
   
2,325 
   
2,579 
   
2,016 
 
Malaysia 
   
2,138 
   
1,895 
   
1,287 
 
Korea 
   
2,109 
   
719 
   
950 
 
Philippines 
   
2,005 
   
333 
   
241 
 
Japan 
   
1,544 
   
1,189 
   
1,354 
 
U.S.A. 
   
23 
   
22 
   
2,077 
 
Other 
   
251 
   
76 
   
122 
 
 
 
 
 
Total 
  $ 
101,096 
  $ 
78,335 
  $ 
60,928 
 
 
 
 
 
 

 
- 36 - 
 
 
Revenues by product category were as follows: 
 
(In Thousands) 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
 
Integrated Circuits 
 
 
 
 Analog 
  $ 
55,924 
  $ 
35,152 
  $ 
23,901 
 Mixed-signal 
   
45,113 
   
43,113 
   
34,944 
 Digital 
   
14 
   
- 
   
3 
 
Licensing revenue 
   
45 
   
70 
   
2,080 
 
 
 
 
 
Total 
  $ 
101,096 
  $ 
78,335 
  $ 
60,928 
 
 
 
 
 
For the years ended December 31, 2021, one customer accounted for 10% or more of revenues. For the 
years ended December 31, 2020 and 2019, two customers accounted for 10% or more of revenues. The 
percentage of revenues to these customers was as follows: 
 
 
Years Ended December 31 
 
2021 
2020 
2019 
 
 
 
 
 
Customer A 
   
15% 
   
14% 
   
14% 
 
Customer B 
   
8% 
   
11% 
   
12% 
 
 
 
 
 
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: 
(In Thousands) 
 
 
December 31 
 
2021 
2020 
2019 
 
 
 
 
 
Taiwan 
  $ 
9,977    $ 
8,859    $ 
7,621  
 
China 
   
9,602 
   
4,171 
   
3,661  
 
U.S.A. 
   
3,814     
4,138     
4,015  
 
Other 
   
218     
98     
254  
 
 
 
 
 
Total 
  $ 
23,611 
  $ 
17,266 
  $ 
15,551 
 
 
 
 
 
21. SUBSEQUENT EVENT 
 
 
On March 14, 2022, the Company received the preliminary, non-binding proposal (the “Proposal Letter”) for 
acquiring all of the outstanding shares (including ADS) for a purchase price of $5.50 per ADS in cash (the 
“Proposed Transaction”). A special committee composed of two of its independent directors was formed 
accordingly to evaluate and consider such proposal or any other transactions with the assistance of 
independent financial and legal advisors retained by the special committee. The special committee has yet 
to make any recommendation as of the date of issuance of these consolidated financial statements. The 
Company cautions that the Board has just received the Proposal Letter and has not made any decisions with 
respect to the Proposal Letter and the Proposed Transaction. There can be no assurance that any definitive 
offer to the Company will be made, that any definitive agreement relating to the Proposal Letter will be 
entered, or that the Proposed Transaction or any other similar transaction will be approved or consummated. 
The Company does not undertake any obligation to provide any updates with respect to this or any other 
transaction, except as required under applicable law.