<SEC-DOCUMENT>0000929638-25-001738.txt : 20250430
<SEC-HEADER>0000929638-25-001738.hdr.sgml : 20250430
<ACCEPTANCE-DATETIME>20250430163011
ACCESSION NUMBER:		0000929638-25-001738
CONFORMED SUBMISSION TYPE:	POS AM
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250430
DATE AS OF CHANGE:		20250430

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GCT Semiconductor Holding, Inc.
		CENTRAL INDEX KEY:			0001851961
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				862171699
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		POS AM
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-279600
		FILM NUMBER:		25895908

	BUSINESS ADDRESS:	
		STREET 1:		2290 NORTH 1ST STREET
		STREET 2:		SUITE 201
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131
		BUSINESS PHONE:		408-434-6040

	MAIL ADDRESS:	
		STREET 1:		2290 NORTH 1ST STREET
		STREET 2:		SUITE 201
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95131

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Concord Acquisition Corp III
		DATE OF NAME CHANGE:	20210318
</SEC-HEADER>
<DOCUMENT>
<TYPE>POS AM
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    <div style="text-align: center; font-family: 'Times New Roman', serif;">&#160;</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">As filed with the Securities and Exchange Commission on April 30, 2025</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif;">&#160;</div>
    <div style="text-align: right; font-family: 'Times New Roman', serif; font-weight: bold;">Registration No. 333-279600</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif;">&#160;</div>
    <div style="font-family: 'Times New Roman', serif; font-size: 1pt;">&#160;</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-size: 18pt; font-weight: bold;">UNITED STATES</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-size: 18pt; font-weight: bold;">SECURITIES AND EXCHANGE COMMISSION</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-size: 12pt; font-weight: bold;">Washington, D.C. 20549</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-size: 18pt; font-weight: bold;">POST-EFFECTIVE AMENDMENT NO. 1</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">TO</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">FORM S-1 REGISTRATION STATEMENT NO. 333-279600</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">&#160;</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">UNDER</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">THE SECURITIES ACT OF 1933</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-size: 18pt; font-weight: bold;">GCT Semiconductor Holding,&#160;Inc.</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">(Exact name of registrant as specified in its charter)</div>
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            <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">86-2171699</div>
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            <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">(Primary Standard Industrial</div>
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            <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">(I.R.S. Employer</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">2290 North 1st Street, Suite 201</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">San Jose, California 95131</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">(408) 434-6040</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">(Address, including zip code, and telephone number, including area code, of registrant&#8217;s principal executive offices)</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">John Schlaefer</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">GCT Semiconductor Holding,&#160;Inc.</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">2290 North 1st Street, Suite&#160;201</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">San Jose, California 95131</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">(408) 434-6040</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">(Name, address, including zip code, and telephone number, including area code, of agent for service)</div>
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    <div style="font-family: 'Times New Roman', serif; font-size: 1pt;">&#160;</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-style: italic; font-weight: bold;">With copies to:</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">Albert Lung,&#160;Esq.</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">Morgan, Lewis&#160;&amp; Bockius LLP</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">1400 Page&#160;Mill Road</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">Palo Alto, CA 94304</div>
    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">(650) 843-4000</div>
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    <div style="text-align: justify; font-family: 'Times New Roman', serif;">Approximate date of commencement of proposed sale to the public: Not applicable.</div>
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    <div style="text-align: justify; margin-top: 6pt; font-family: 'Times New Roman', serif;">If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box. <font style="font-family: 'Times New Roman', Times, serif;">&#9744;</font></div>
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    <div style="text-align: justify; margin-top: 6pt; font-family: 'Times New Roman', serif;">If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or
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    <div style="text-align: justify; margin-top: 6pt; font-family: 'Times New Roman', serif;">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an
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            <div style="text-align: justify; font-family: 'Times New Roman', serif;">Non-accelerated filer</div>
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    <div style="text-align: justify; font-family: 'Times New Roman', serif;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">DEREGISTRATION OF SECURITIES</div>
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    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">GCT Semiconductor Holding, Inc., a Delaware corporation (the &#8220;<u>Registrant</u>&#8221;), is filing this Post-Effective Amendment No. 1 (the &#8220;<u>Amendment</u>&#8221;) to the
      Registration Statement on Form S-1 (File No. 333-279600) filed by the Registrant with the Securities and Exchange Commission (&#8220;<u>SEC</u>&#8221;) on May 22, 2024 and declared effective on June 06, 2024 (&#8220;<u>S-1 Registration Statement</u>&#8221;), to deregister
      any and all securities of the Registrant registered but unsold or otherwise unissued under the S-1 Registration Statement as of the date hereof.</div>
    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">&#160;</div>
    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">The S-1 Registration Statement pertains to the registration for resale by B. Riley Principal Capital II, LLC (the &#8220;<u>Selling Stockholder</u>&#8221;) of 10,900,000
      shares of the Registrant&#8217;s common stock, $0.0001 par value per share (the &#8220;<u>Common Stock</u>&#8221;), issuable pursuant to a Common Stock Purchase Agreement, dated as of April 23, 2024 (the &#8220;Common Stock Purchase Agreement&#8221;), that the Registrant entered
      into with the Selling Stockholder.</div>
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    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">On April 23, 2025, the Registrant filed a Registration Statement on Form S-3 (File No. 333-286713) with the SEC, which was declared effective on April 30, 2025,
      to register, pursuant to the Common Stock Purchase Agreement, all unsold or unissued Common Stock of the Selling Stockholder under the S-1 Registration Statement.</div>
    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">&#160;</div>
    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">For ease of reference, all share numbers above are as stated in the S-1 Registration Statement.</div>
    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">&#160;</div>
    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">Any and all offerings of the Registrant&#8217;s securities pursuant to the S-1 Registration Statement have been terminated. Accordingly, the Registrant hereby
      terminates the effectiveness of the S-1 Registration Statement. In addition, in accordance with undertakings made by the Registrant in the S-1 Registration Statement to remove from registration, by means of a post-effective amendment, any securities
      being registered which remain unsold at the termination of the offering, the Registrant hereby removes from registration all securities registered under the S-1 Registration Statement that remain unsold under the S-1 Registration Statement as of the
      date hereof. The S-1 Registration Statement is hereby amended, as appropriate, to reflect the deregistration of such securities.</div>
    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">&#160;</div>
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    <div style="text-align: center; font-family: 'Times New Roman', serif; font-weight: bold;">SIGNATURES</div>
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    <div style="text-align: justify; text-indent: 36pt; font-family: 'Times New Roman', serif;">Pursuant to the requirements of the Securities Act of 1933, the Registrant has duly caused this Post-Effective Amendment No. 1 to the Registration Statement to
      be signed on its behalf by the undersigned, thereunto duly authorized in San Jose, California, on April 30, 2025.</div>
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            <div style="font-family: 'Times New Roman', serif; font-weight: bold;">GCT SEMICONDUCTOR HOLDING, INC.</div>
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            <div style="font-family: 'Times New Roman', serif;">By:</div>
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              <div style="font-family: 'Times New Roman', serif; font-style: italic;">/s/ John Schlaefer</div>
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            <div style="font-family: 'Times New Roman', serif;">Name:</div>
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            <div style="font-family: 'Times New Roman', serif;">John Schlaefer</div>
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            <div style="font-family: 'Times New Roman', serif;">Title:</div>
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            <div style="font-family: 'Times New Roman', serif;">Chief Executive Officer</div>
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    <div style="text-align: justify; font-family: 'Times New Roman', serif;">No other person is required to sign this Post-Effective Amendment No. 1 to the Registration Statement in reliance on Rule 478 of the Securities Act of 1933, as amended.</div>
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