CYD [CHINA YUCHAI INTERNATIONAL] SC 13D/A: (Original Filing)
[CUSIP No. G210821050 Page 2 of 8 1 NAMES OF REPORTING PERSONS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) o (a) o (b) 3 SEC USE ONLY 4]
[CUSIP No. G210821050 Page 2 of 8 1 NAMES OF REPORTING PERSONS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) o (a) o (b) 3 SEC USE ONLY 4]
[CUSIP No. G210821050 Page 2 of 8 1 NAMES OF REPORTING PERSONS 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS) o (a) o (b) 3 SEC USE ONLY 4]
[China Yuchai Announces Issuance of Short-Term Financing Bonds Singapore, Singapore November 22, 2011 China Yuchai International Limited (NYSE: CYD) The Bonds will bear a fixed annual interest rate of 5.77%. Subscription to and trading of the Bonds is only available in China to institutional investors of Chinas National Inter-bank Bond Market. The lead underwriter and bookrunner for the Bonds]
[China Yuchai Announces Issuance of Short-Term Financing Bonds Singapore, Singapore November22, 2011 China Yuchai International Limited (NYSE: CYD) The Bonds will bear a fixed annual interest rate of 5.77%. Subscription to and trading of the Bonds is only available in China to institutional investors of Chinas National Inter-bank Bond Market. The lead underwriter and bookrunner]
[1. NAMES OF REPORTING PERSONS Phillip Frost, M.D. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP x ¨ (a) 3. SEC USE ONLY 4. SOURCE OF FUNDS]
[FORM 10-K (Mark One) ý For the fiscal year ended August 31, 2011 OR o For the transition period from to SemiLEDs Corporation Delaware 20-2735523 3F, No. 11 Ke Jung Rd., Chu-Nan Site, 350 +886-37-586788 Title of each class Name of each exchange on which registered Common stock, par value $0.0000056 per share The NASDAQ Global Select Market None o] [QuickLinks -- Click here to rapidly navigate through this document List of Subsidiaries Name Jurisdiction of Percentage of Majority-Owned Subsidiaries: SemiLEDs Optoelectronics Co., Ltd. Taiwan 100 % Helios Crew Corporation Delaware 100 % Silicon Base Development, Inc. Taiwan 100 % SemiLEDs International Corporation Ltd. Hong Kong 100 % Ning Xiang Technology Co., Ltd. Taiwan] [QuickLinks -- Click here to rapidly navigate through this document Consent of Independent Registered Public Accounting Firm The Board of Directors and Stockholders We consent to the incorporation by reference in the registration statement (No. 333-171107) on Form S-8 of SemiLEDs Corporation of our report dated October 26, 2010, except for the amendment to the preferred stock automatic conversion provisions] [QuickLinks -- Click here to rapidly navigate through this document Consent of Independent Registered Public Accounting Firm The Board of Directors and Stockholders We consent to the incorporation by reference in the registration statement (No. 333-171107) on Form S-8 of SemiLEDs Corporation of our report dated November 22, 2011 with respect to the consolidated balance sheet of SemiLEDs Corporation and] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION OF CHIEF EXECUTIVE OFFICER I, Trung Tri Doan, certify that: 1. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION OF CHIEF FINANCIAL OFFICER I, David Young, certify that: 1. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION (1) (2) Dated: November 22, 2011 Trung Tri Doan Chairman and Chief Executive Officer EX-32.1 7 a2206476zex-32_1.htm EX-32.1] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION (1) (2) Dated: November 22, 2011 David Young Chief Financial Officer EX-32.2 8 a2206476zex-32_2.htm EX-32.2]
[1. NAMES OF REPORTING PERSONS Phillip Frost, M.D. 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP x ¨ (a) 3. SEC USE ONLY 4. SOURCE OF FUNDS]
[FORM 10-K (Mark One) ý For the fiscal year ended August 31, 2011 OR o For the transition period from to SemiLEDs Corporation Delaware 20-2735523 3F, No. 11 Ke Jung Rd., Chu-Nan Site, 350 +886-37-586788 Title of each class Name of each exchange on which registered Common stock, par value $0.0000056 per share The NASDAQ Global Select Market None o] [QuickLinks -- Click here to rapidly navigate through this document List of Subsidiaries Name Jurisdiction of Percentage of Majority-Owned Subsidiaries: SemiLEDs Optoelectronics Co., Ltd. Taiwan 100 % Helios Crew Corporation Delaware 100 % Silicon Base Development, Inc. Taiwan 100 % SemiLEDs International Corporation Ltd. Hong Kong 100 % Ning Xiang Technology Co., Ltd. Taiwan] [QuickLinks -- Click here to rapidly navigate through this document Consent of Independent Registered Public Accounting Firm The Board of Directors and Stockholders We consent to the incorporation by reference in the registration statement (No. 333-171107) on Form S-8 of SemiLEDs Corporation of our report dated October 26, 2010, except for the amendment to the preferred stock automatic conversion provisions] [QuickLinks -- Click here to rapidly navigate through this document Consent of Independent Registered Public Accounting Firm The Board of Directors and Stockholders We consent to the incorporation by reference in the registration statement (No. 333-171107) on Form S-8 of SemiLEDs Corporation of our report dated November 22, 2011 with respect to the consolidated balance sheet of SemiLEDs Corporation and] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION OF CHIEF EXECUTIVE OFFICER I, Trung Tri Doan, certify that: 1. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION OF CHIEF FINANCIAL OFFICER I, David Young, certify that: 1. 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION (1) (2) Dated: November 22, 2011 Trung Tri Doan Chairman and Chief Executive Officer EX-32.1 7 a2206476zex-32_1.htm EX-32.1] [QuickLinks -- Click here to rapidly navigate through this document CERTIFICATION (1) (2) Dated: November 22, 2011 David Young Chief Financial Officer EX-32.2 8 a2206476zex-32_2.htm EX-32.2]
[TechFaith 3Q11 Revenue Exceeds High-End of Prior Guidance Beijing, China, Novemeber 21, 2011 For the third quarter of 2011, TechFaith reported net revenue of US$80.6 million, a 17% increase compared to US$68.6 million in the third quarter of 2010, and a 3% decrease compared to US$82.8 million in the second quarter of 2011. Gross margin for the third quarter of] [FORM 6-K CHINA TECHFAITH WIRELESS COMMUNICATION TECHNOLOGY LIMITED Building 1, No. 13, YongChang North Road þ o Form 20-F o o CHINA TECHFAITH WIRELESS COMMUNICATION Yuping Ouyang Chief Financial Officer Description 99.1 Press release regarding Techfaiths third quarter 2011 financial results 6-K 1 c25123e6vk.htm FORM 6-K]
[TechFaith 3Q11 Revenue Exceeds High-End of Prior Guidance Beijing, China, Novemeber 21, 2011 For the third quarter of 2011, TechFaith reported net revenue of US$80.6 million, a 17% increase compared to US$68.6 million in the third quarter of 2010, and a 3% decrease compared to US$82.8 million in the second quarter of 2011. Gross margin for the third quarter of] [FORM 6-K CHINA TECHFAITH WIRELESS COMMUNICATION TECHNOLOGY LIMITED Building 1, No. 13, YongChang North Road þ o Form 20-F o o CHINA TECHFAITH WIRELESS COMMUNICATION Yuping Ouyang Chief Financial Officer Description 99.1 Press release regarding Techfaiths third quarter 2011 financial results 6-K 1 c25123e6vk.htm FORM 6-K]