Siliconware Precision Industries (SPILA) 6-K Current report (foreign)

1934 Act RegistrationNo. 1- 30702

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR15d-16 OF

THE SECURITIES EXCHANGE ACT OF 1934

For the month of April, 2018

Siliconware Precision Industries Co., Ltd.

(Translation of Registrant’s Name Into English)

NO. 123, SEC. 3, DA FONG RD. TANTZU

TAICHUNG, TAIWAN

(Address of Principal Executive Offices)

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form20-F or Form40-F)

Form20-F  ☒            Form40-F  ☐

(Indicate by check mark if the registrant is submitting the Form6-K in paper as permitted by RegulationS-T Rule 101(b)(1):   ☐)

(Indicate by check mark if the registrant is submitting the Form6-K in paper as permitted by RegulationS-T Rule 101(b)(7):  ☐)

News Release

Contact:	Eva Chen, VP of Finance Div.
Siliconware Precision Industries Co., Ltd.	SPILIR@spil.com.tw
No. 123, Sec. 3, Da Fong Rd., Tantzu,	+886- 4- 25341525#1536
Taichung, Taiwan 42749	Byron Chiang, Spokesperson
www.spil.com.tw	Spokesperson@spil.com.tw
	+886- 3- 5795678#3676

Siliconware Precision Industries Reports Unaudited Consolidated

Financial Results for the First Quarter of 2018

Taichung, Taiwan, Apr. 24, 2018—Siliconware Precision Industries Co., Ltd. (“SPIL” or the “Company”) (Taiwan Stock Exchange: 2325, NASDAQ: SPIL) today announced that its consolidated sales revenues for the first quarter of 2018 were NT$ 18,913 million, which represented a 12.5% decline in revenues compared to the fourth quarter of 2017 and a 3.3% decline in revenues compared to the first quarter of 2017. SPIL reported a net income attributable to shareholders of the parent of NT$ 240 million for the first quarter of 2018, compared with a net income of NT$ 1,489 million and a net income of NT$ 997 million for the fourth quarter of 2017 and the first quarter of 2017, respectively.

Basic earnings per share for this quarter was NT$ 0.08, and diluted earnings per ordinary share was NT$ 0.08. Basic earnings per ADS for this quarter was US$ 0.01, and diluted earnings per ADS was US$ 0.01.

All figures were prepared in accordance with T-IFRS on a consolidated basis.

Operating results review:

• For the first quarter of 2018, net revenues from IC packaging were NT$ 16,021 million and represented 85% of total net revenues. Net revenues from testing operations were NT$ 2,892 million and represented 15% of total net revenues.

• Cost of goods sold was NT$ 15,918 million, representing a decline of 7.1% compared to the fourth quarter of 2017 and an increase of 0.8% compared to the first quarter of 2017.

• Raw materials costs were NT$ 6,629 million for the first quarter of 2018 and represented 35.1% of total net revenues, whereas raw materials costs were NT$ 7,266 million and represented 33.6% of total net revenues for the fourth quarter of 2017.

• The accrued expenses of bonuses to employees accounted for under cost of goods sold totaled NT$ 19 million.

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• Gross profit was NT$ 2,995 million for the first quarter of 2018, representing a gross margin of 15.8%, which decreased from a gross margin of 20.7% for the fourth quarter of 2017 and decreased from 19.2% for the first quarter of 2017.

• Total operating expenses for the first quarter of 2018 were NT$ 1,824 million, which included selling expenses of NT$ 241 million, administrative expenses of NT$ 654 million and R&D expenses of NT$ 929 million. Total operating expenses represented 9.6% of total net revenues for the first quarter of 2018.

• The accrued expenses of bonuses to employees, directors accounted for under operating expenses totaled NT$ 10 million.

• Operating income was NT$ 1,171 million for the first quarter of 2018, representing an operating margin of 6.2%, which decreased from 10.7% for the fourth quarter of 2017 and decreased from 8.9% for the first quarter of 2017.

• Non-operating items:

• Our non-operating expense was NT$ 736 million, including net losses of NT$ 713 million on fair value change of financial assets and liabilities at fair value through profit or loss.

• Net income before tax was NT$ 435 million for the first quarter of 2018, which decreased from a net income before tax of NT$ 1,931 million for the fourth quarter of 2017 and decreased from a net income before tax of NT$ 1,262 million for the first quarter of 2017.

• Income tax expense was NT$ 171 million for the first quarter of 2018, compared with income tax expense of NT$ 442 million for the fourth quarter of 2017 and income tax expense of NT$ 265 million for the first quarter of 2017.

• Net income attributable to shareholders of the parent was NT$ 240 million for the first quarter of 2018, which decreased from a net income of NT$ 1,489 million for the fourth quarter of 2017 and decreased from a net income of NT$ 997 million for the first quarter of 2017.

• Total number of shares outstanding was 3,129 million shares as of Mar. 31, 2018. Basic earnings per share for this quarter was NT$ 0.08, and diluted earnings per ordinary share was NT$ 0.08. Basic earnings per ADS for this quarter was US$ 0.01, and diluted earnings per ADS was US$ 0.01.

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Capital expenditure and balance sheet highlight:

• Our cash balances totaled NT$ 31,361 million as of Mar. 31, 2018 from NT$ 24,444 million as of Dec. 31, 2017, and NT$ 23,611 million as of Mar. 31, 2017.

• Capital expenditures for the first quarter of 2018 totaled NT$ 2,277 million.

• Total depreciation expenses for the first quarter of 2018 totaled NT$ 3,830 million.

IC packaging service:

• Net revenues from IC packaging operations were NT$ 16,021 million for the first quarter of 2018, which represented a decrease of NT$ 2,174 million or 11.9% compared to the fourth quarter of 2017.

• Substrate-based packaging, leadframe-based packaging and wafer bumping & Flip Chip accounted for 29%, 18% and 38%, respectively, of total net revenues for the first quarter of 2018.

• As of Mar. 31, 2018 we had 8,731 wirebonders installed, of which 524 were added in the first quarter of 2018.

IC testing service:

• Net revenues from testing operations were NT$ 2,892 million for the first quarter of 2018, which represented a decrease of NT$ 536 million or 15.6% compared to the fourth quarter of 2017.

• As of Mar. 31, 2018 we had 589 testers installed, of which 15 were added in the first quarter of 2018.

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Revenue Analysis

• Breakdown by end applications:

By application	1Q18			4Q17
Communication		67	%		68	%
Computing		14	%		11	%
Consumer		17	%		19	%
Memory		2	%		2	%

• Breakdown by packaging type:

By application	1Q18			4Q17
Bumping & Flip Chip		38	%		40	%
Substrate Based		29	%		27	%
Leadframe Based		18	%		17	%
Testing		15	%		16	%

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About SPIL

Siliconware Precision Industries Ltd. (“SPIL”)(NASDAQ:SPIL, Taiwan Stock Exchange:2325) is a leading provider of comprehensive semiconductor assembly and test services. SPIL is dedicated to meeting all of its customers’ integrated circuit packaging and testing requirements, with turnkey solutions that range from design consultations, modeling and simulations, wafer bumping, wafer probe and sort, package assembly, final test, burn-in, to shipment. Products include advanced leadframe, substrate packages, wafer bumping and FCBGA, which are widely used in personal computers, communications, Internet appliances, cellular phones, digital cameras, cable modems, personal digital assistants and LCD monitors. SPIL supplies services and support to fabless design houses, integrated device manufacturers and wafer foundries globally. For further information, visit SPIL’s web site atwww.spil.com.tw.

Safe Harbor Statement

The information herein contains forward-looking statements within the meaning of Section 27A of the U.S. Securities Act of 1933 and Section 21E of the U.S. Securities Exchange Act of 1934. We have based these forward-looking statements on our current expectation and projections about future events. Such forward-looking statements are inherently subject to known and unknown risks, uncertainties, assumptions about us and other factors that may cause the actual performance, financial condition or results of operations of SPIL to be materially different from what may be implied by such forward-looking statements. Investors are cautioned that actual events and results could differ materially from those statements as a result of a number of factors, including, among other things:

• the intensely competitive personal computer, communications, consumer ICs and non-commodity memory semiconductor industries and markets;

• cyclical nature of the semiconductor industry;

• risks associated with global business activities;

• non-operating losses due to poor financial performance of some of our investments;

• our dependence on key personnel;

• general economic and political conditions;

• possible disruptions in commercial activities caused by natural and human induced disaster, including terrorist activities and armed conflicts and contagious disease, such as the Severe Acute Respiratory Syndrome;

• fluctuations in foreign currency exchange rates; and

• other risks identified in our annual reports on Form 20-F filed with the U.S. Securities and Exchange Commission each year.

The words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan” and similar expressions, as they relate to us, are intended to identify a number of these forward-looking statements. We undertake no obligation to update or revise any forward-looking statements whether as a result of new information, future events or otherwise. In light of these risks, uncertainties and assumptions, the forward-looking events discussed herein might not occur and our actual results could differ materially from those anticipated in these forward-looking statements.

All financial figures discussed herein are prepared pursuant to TIFRS on a consolidated basis. The investment gains or losses of our company for the three months ended Mar 31, 2018 reflect our gains or losses attributable to the first quarter of 2018 unaudited financial results of several of our investees which are evaluated under the equity method. The consolidated financial data for our company for the three months ended Mar 31, 2018 is not necessarily indicative of the results that may be expected for any period thereafter.

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SILICONWARE PRECISION INDUSTRIES CO., LTD.

CONSOLIDATED BALANCE SHEET (UNAUDITED)

As of Mar 31, 2018 and 2017

(Expressed in Thousands of New Taiwan Dollars (NTD) and U.S. Dollars (USD))

	Mar 31, 2018								Mar 31, 2017				Sequential
ASSETS	USD			NTD			%		NTD		%		Change			%
Current Assets
Cash and cash equivalent		1,077,509			31,360,901			25		23,611,168		19		7,749,733			32.8
Contract assets		64,639			1,881,313			2		—		—		1,881,313			—
Accounts receivable		497,810			14,488,752			11		15,532,994		13		(1,044,242	)		(6.7	)
Inventories		194,126			5,650,037			4		6,822,101		6		(1,172,064	)		(17.2	)
Other current assets		51,039			1,485,504			1		1,564,299		1		(78,795	)		(5.0	)
Total current assets		1,885,123			54,866,507			43		47,530,562		39		7,335,945			15.4
Non-current Assets
Financial assets at fair value through profit or loss - non current		128,944			3,752,895			3		—		—		3,752,895			—
Available-for-sale financial assets		—			—			—		4,230,202		3		(4,230,202	)		(100.0	)
Long-term investment under equity method		106,613			3,102,976			2		2,643,697		2		459,279			17.4
Property, plant and equipment		2,164,994			63,012,138			50		65,962,091		54		(2,949,953	)		(4.5	)
Intangible assets		3,598			104,727			—		156,410		—		(51,683	)		(33.0	)
Other assets		76,433			2,224,587			2		1,778,699		2		445,888			25.1
Total non-current assets		2,480,582			72,197,323			57		74,771,099		61		(2,573,776	)		(3.4	)
Total Assets		4,365,705			127,063,830			100		122,301,661		100		4,762,169			3.9
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities
Current Liabilities
Short-term loans		122,331			3,560,445			3		2,578,050		2		982,395			38.1
Financial liabilities at fair value through profit or loss - current		37,350			1,087,081			1		887,096		1		199,985			22.5
Accounts payable		251,102			7,308,324			6		7,366,573		6		(58,249	)		(0.8	)
Current portion of bonds payable		387,090			11,266,243			9		12,028,976		10		(762,733	)		(6.3	)
Current portion of long-term debt		149,115			4,340,000			3		2,132,167		2		2,207,833			103.5
Other current liability		418,973			12,194,193			10		12,994,547		10		(800,354	)		(6.2	)
Non-current liabilities
Long-term loans		402,942			11,727,625			9		15,340,000		13		(3,612,375	)		(23.5	)
Other liabilities		52,424			1,525,800			1		1,580,368		1		(54,568	)		(3.5	)
Total Liabilities		1,821,327			53,009,711			42		54,907,777		45		(1,898,066	)		(3.5	)
Stockholders’ Equity
Eqity attributable to owners of the Company
Capital stock		1,075,166			31,292,699			24		31,163,611		26		129,088			0
Capital reserve		475,156			13,829,434			11		12,641,997		10		1,187,437			9.4
Legal reserve		406,711			11,837,317			9		10,844,001		9		993,316			9.2
Retained earnings		468,108			13,624,285			11		11,248,800		9		2,375,485			21.1
Other equities		(2,836	)		(82,550	)		—		1,495,475		1		(1,578,025	)		(105.5	)
Equity attributable to owners of the Company		2,422,305			70,501,185			55		67,393,884		55		3,107,301			4.6
Non-controlling interests		122,073			3,552,934			3		—		—		3,552,934			—
Total Equity		2,544,378			74,054,119			58		67,393,884		55		6,660,235			9.9
Total Liabilities & Shareholders’ Equity		4,365,705			127,063,830			100		122,301,661		100		4,762,169			3.9
Forex ( NT$ per US$ )					29.105					30.330

(1) All figures are under T-IFRS.

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SILICONWARE PRECISION INDUSTRIES CO., LTD.

CONSOLIDATED COMPREHENSIVE INCOME STATEMENT (UNAUDITED)

(Expressed in Thousands of New Taiwan Dollars (NTD) and U.S. Dollars (USD))

	3 months ended on Mar 31															Sequential Comparison
	1Q 2018									1Q 2017			YoY			1Q 2018			4Q 2017			QoQ
	USD			NTD			%			NTD			change %			NTD			NTD			change %
Revenues		645,485			18,912,711			100.0			19,551,585			(3.3	)		18,912,711			21,622,785			(12.5	)
Cost of Goods Sold		(543,279	)		(15,918,086	)		(84.2	)		(15,794,850	)		0.8			(15,918,086	)		(17,137,541	)		(7.1	)
Gross Profit		102,206			2,994,625			15.8			3,756,735			(20.3	)		2,994,625			4,485,244			(33.2	)
Operating Expenses
Selling Expenses		(8,240	)		(241,427	)		(1.3	)		(248,387	)		(2.8	)		(241,427	)		(278,955	)		(13.5	)
Administrative Expenses		(22,313	)		(653,740	)		(3.4	)		(803,559	)		(18.6	)		(653,740	)		(941,971	)		(30.6	)
Research and Development Expenses		(31,692	)		(928,595	)		(4.9	)		(965,152	)		(3.8	)		(928,595	)		(944,345	)		(1.7	)
		(62,245	)		(1,823,762	)		(9.6	)		(2,017,098	)		(9.6	)		(1,823,762	)		(2,165,271	)		(15.8	)
Operating Income		39,961			1,170,863			6.2			1,739,637			(32.7	)		1,170,863			2,319,973			(49.5	)
Non-operating Items		(25,111	)		(735,752	)		(3.9	)		(478,088	)		(53.9	)		(735,752	)		(388,576	)		(89.3	)
Income Before Income Tax		14,850			435,111			2.3			1,261,549			(65.5	)		435,111			1,931,397			(77.5	)
Income Tax Expenses		(5,823	)		(170,628	)		(0.9	)		(265,025	)		(35.6	)		(170,628	)		(442,408	)		(61.4	)
Net Income		9,027			264,483			1.4			996,524			(73.5	)		264,483			1,488,989			(82.2	)
Other comprehensive income
Items that will not be reclassiflied to profit or loss
Share of other comprehensive income of associates		5,597			164,003						—									—
Remeasurements of post employment benefit obligations		—			—						—									10,647
Income tax relating to items that will not be reclassified to profit or loss		327			9,566						—									(1,810	)
Items that may be subsequently reclassified to profit or loss
Exchange difference on translation of foreign financial statements		12,325			361,134						(600,408	)								(17,030	)
Unrealized gain(loss) on available-for-sale financial assets		—			—						560,170									(592,973	)
Share of other comprehensive income of associates		—			—						257,367									48,076
Income tax relating to items that may be reclassified to profit or loss		—			—						(7,089	)								—
Total other comprehensive income (loss)		18,249			534,703						210,040									(553,090	)
Total comprehensive income		27,276			799,186						1,206,564									935,899
Net profit attributable to:
Owners of the Company					240,115						996,524									1,488,989
Non-controlling interests					24,368						—									—
					264,483						996,524									1,488,989
Total comprehensive income attributable to:
Owners of the Company					752,680						1,206,564									935,899
Non-controlling interests					46,506						—									—
					799,186						1,206,564									935,899
Earnings Per Ordinary Share- Basic				NT$	0.08					NT$	0.32								NT$	0.48
Earnings Per Ordinary Share- Diluted				NT$	0.08					NT$	0.15								NT$	0.48
Earnings Per ADS- Basic				US$	0.01					US$	0.05								US$	0.08
Earnings Per ADS- Diluted				US$	0.01					US$	0.02								US$	0.08
Weighted Average Outstanding Shares - Diluted (‘k)					3,127,762						3,400,463									3,120,063
Forex ( NT$ per US$ )					29.300						31.095									30.108

(1) All figures are under T-IFRS.

(2) 1 ADS is equivalent to 5 Common Shares.

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SILICONWARE PRECISION INDUSTRIES CO., LTD.

CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

For 3 Months Ended on Mar 31, 2018 and 2017

(Expressed in Thousands of New Taiwan Dollars (NTD) and U.S. Dollars (USD))

	3 months, 2018						3 months, 2017
	USD			NTD			NTD
Cash Flows from Operating Activities:
Income before income tax		14,850			435,111			1,261,549
Depreciation		130,711			3,829,840			3,392,422
Amortization		1,207			35,361			69,005
Change in working capital & others		(1,642	)		(48,130	)		(1,778,145	)
Net cash flows provided from operating activities		145,126			4,252,182			2,944,831
Cash Flows from Investing Activities:
Proceeds from from disposal of subsidiaries		155,531			4,557,070			—
Acquisition of property, plant, and equipment		(77,699	)		(2,276,575	)		(3,336,501	)
Proceeds from disposal of property, plant, and equipment		412			12,078			417,578
Others		(3,415	)		(100,088	)		86,938
Net cash provided from (used in) investing activities		74,829			2,192,485			(2,831,985	)
Cash Flows from Financing Activities:
Increase in short-term loans		7,250			212,432			—
Proceeds from long-term loans		24,724			724,424			1,000,000
Repayment of long-term loans		(17,065	)		(500,000	)		(1,780,279	)
Others		(380	)		(11,149	)		(1,870	)
Net cash provided from (used in) financing activities		14,529			425,707			(782,149	)
Foreign currency exchange effect		1,585			46,444			(195,799	)
Net increase (decrease) in cash and cash equivalents		236,069			6,916,818			(865,102	)
Cash and cash equivalents at beginning of period		834,269			24,444,083			24,476,270
Cash and cash equivalents at end of period		1,070,338			31,360,901			23,611,168
					—			—
Forex ( NT$ per US$ )					29.300			31.095

(1) : All figures are under T-IFRS.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Siliconware Precision Industries Co., Ltd
Date: April 24, 2018	By:	/s/ Ms. Eva Chen
		Eva Chen
		Chief Financial Officer