ENNOSTAR — Interim / Quarterly Report 2021

May 13, 2021

==> picture [158 x 29] intentionally omitted <==

==> picture [523 x 22] intentionally omitted <==

First Quarter 2021 Results Investor Conference

May 14, 2021

Confidential Security P Ⓒ 2021 Ennostar Inc. All Rights Reserved.

Safe Harbor Notice

This presentation may contain forward-looking statements. These forward-looking are subject to risks, uncertainties and other factors. Consequently, actual results could differ materially from those reflected in these forward-looking statements.

The factors include the impact of competitive products and pricing, timely acceptance of products design by our customers, timely introduction of new technologies, ability to ramp new products into volume, industry wide shifts in supply and demand, market oversupply, availability of manufacturing capacity, financial stability in end markets, potential difficulties in talents retention, unexpected costs and expenses, any merger and acquisition associated uncertainties such as obtaining of regulatory approval or integration delay, loss of significant customers, involvement in legal or administrative proceedings, new regulations that may impact our business operation, fluctuations in foreign exchange rates, global economic conditions or non-economic conditions and any other risks factors.

Except as imposed by law, we undertake no obligation to publicly revise or update these forward-looking statements, whether as a result of new information, future events or otherwise.

==> picture [87 x 16] intentionally omitted <==

Confidential Security P

2

Ⓒ 2021 Ennostar Inc. All Rights Reserved.

Consolidated Statements of Comprehensive Income

1Q21Net Revenue6,879 EPISTAR4,563 LEXTAR2,316Gross Margin13.7%Operating Expenses1,323Operating Margin(4.8%)Net Non-Operating Items(15)Net Income Attributable toParent Company(260)Net Profit Margin(3.8%)Basic EPS (NT Dollar)(0.38)in NT$ millions	4Q206,8024,2822,5207.5%1,793(18.1%)(3,620)(4,743)(69.7%)(6.91)	1Q205,0673,3881,6792.9%1,687(29.2%)(312)(1,668)(32.9%)(2.43)	QoQ+1.1%+6.6%-8.1%+6.2%-26.2%+13.3%--+65.9%6.53	YoY
				+35.8%+34.7%+37.9%+10.8%-21.6%+24.4%--+29.1%2.05

＊ The data of 2020 above is a simple addition of EPISTAR's financial report and LEXTAR's financial report and is unaudited.

==> picture [87 x 16] intentionally omitted <==

Confidential Security P Ⓒ 2021 Ennostar Inc. All Rights Reserved.

3

– Statements of Comprehensive Income Epistar

in NT$ millionsNet RevenueGross MarginOperating ExpensesOperating Margin	1Q214,56312.6%899(5.9%)	4Q204,2824.1%1,313(25.5%)	1Q203,388(0.1%)1,296(36.6%)	QoQ+6.6%+8.5%-31.5%+19.6%	YoY
					+34.7%+12.7%-30.6%+30.7%

==> picture [87 x 16] intentionally omitted <==

Confidential Security P

4

Ⓒ 2021 Ennostar Inc. All Rights Reserved.

– Revenue by Application Epistar

The proportion of high-end lighting products applied to such as architecture and horticulture is elevated.

==> picture [87 x 16] intentionally omitted <==

Confidential Security P

Ⓒ 2021 Ennostar Inc. All Rights Reserved.

5

Statements of Comprehensive Income – Lextar

in NT$ millionsNet RevenueGross MarginOperating ExpensesOperating Margin	1Q212,31615.8%407(1.8%)	4Q202,52013.4%480(5.6%)	1Q201,6798.9%390(14.4%)	QoQ-8.1%+2.4%-15.1%+3.8%	YoY
					+37.9%+6.9%+4.3%+12.6%

==> picture [87 x 16] intentionally omitted <==

Confidential Security P

6

Ⓒ 2021 Ennostar Inc. All Rights Reserved.

– Revenue by Application Lextar

==> picture [513 x 325] intentionally omitted <==

==> picture [87 x 16] intentionally omitted <==

==> picture [7 x 10] intentionally omitted <==

----- Start of picture text ----- 7----- End of picture text -----

Confidential Security P Ⓒ 2021 Ennostar Inc. All Rights Reserved.

==> picture [519 x 62] intentionally omitted <==

----- Start of picture text ----- Consolidated Balance Sheets & Key Indices1Q21 4Q20 1Q20in NT$ millions Amount % Amount % Amount %----- End of picture text -----

Cash & Cash Equivalent	7,100	9.9%	8,992	12.9%	9,807	13.5%
Accounts Receivable	10,584	14.8%	10,407	14.9%	10,330	14.3%
Inventories	5,692	7.9%	4,256	6.1%	4,873	6.7%
Long-term Investments	1,939	2.7%	1,916	2.7%	1,000	1.4%
Net PP&E	25,600	35.7%	25,198	36.0%	24,418	33.7%
Total Assets	71,703	100.0%	69,953	100.0%	72,469	100.0%
Short-term Debt	3,091	4.3%	2,244	3.2%	2,104	2.9%
Long-term Debt	3,629	5.1%	3,201	4.6%	1,942	2.7%
Total Liabilities	20,113	28.1%	19,880	28.4%	15,554	21.5%
Total Equity	51,590	71.9%	50,073	71.6%	56,915	78.5%
Inventory Turnover Days	76		62		81
Current Ratio	2.0		2.0		2.9
Net Debt to Equity	-0.7%		-7.1%		-10.1%

＊ The data of 2020 above is a simple addition of EPISTAR's financial report and LEXTAR's financial report and is unaudited.

==> picture [87 x 16] intentionally omitted <==

Confidential Security P Ⓒ 2021 Ennostar Inc. All Rights Reserved.

8

Consolidated Cash Flows

From Operating ActivitiesProfit before TaxDepreciation & AmortizationNet Change in Working CapitalFrom Investing ActivitiesCapital ExpenditureFrom Financing ActivitiesNet Change in LoansNet Change in CashEnding Balancein NT$ millions	1Q21(632)(344)1,262(1,574)(2,672)(1,736)1,2431,279(1,892)7,100	4Q20448(4,854)1,315(70)(1,071)(1,147)(451)(283)(1,153)8,992	1Q20
			267(1,793)1,410179(746)(746)1,2819108169,807

＊The data of 2021 above excludes the effect of initial consolidation of subsidiaries, which is NT$ 3,764 million.

** The data of 2020 above is a simple addition of EPISTAR's financial report and LEXTAR's financial report and is unaudited. .

==> picture [87 x 16] intentionally omitted <==

Confidential Security P Ⓒ 2021 Ennostar Inc. All Rights Reserved.

9

Q&A

==> picture [86 x 16] intentionally omitted <==

Confidential Security P Ⓒ 2021 Ennostar Inc. All Rights Reserved.

10

==> picture [158 x 29] intentionally omitted <==

==> picture [523 x 22] intentionally omitted <==

Thank You https://ennostar.com

Confidential Security P Ⓒ 2021 Ennostar Inc. All Rights Reserved.