GCT Semiconductor Holding, Inc. — fact timeline

GCT Semiconductor Holding, Inc. reported first quarter ended March 31, 2026 results: revenue $1.9 million.

“Quarter 2026 Financial Results Results compare the 2026 fiscal first quarter ended March 31, 2026, to the 2025 fiscal first quarter ended March 31, 2025. • Net revenues were $1.9 million, a 287 . 1% increase from $0.5 million. • Gross margin for the three months ended March 31, 2026 increased to 49.3% compared to 17.7% in the period ended March 31, 2025,”

GCT Semiconductor Holding, Inc. reported 2025 fiscal full year ended December 31, 2025 results: revenue Net revenues were $2.9 million.

“Net revenues were $2.9 million, a 68.6% decrease from $9.1 million.”

GCT Semiconductor Holding, Inc. reported 2025 fiscal fourth quarter ended December 31, 2025 results: revenue Net revenues were $0.8 million.

“Net revenues were $0.8 million, a 57.5% decrease from $1.8 million.”

GCT Semiconductor Holding, Inc. entered into Warrant Issuance Agreement with strategic investor (the Holder) valued at Warrant to purchase 500,000 shares at $2.50 per share, term of 3 years (effective 2026-02-24).

“In connection with the execution of the Amendment, on February 24, 2026, the Company and the Holder entered into a Warrant Issuance Agreement (the “Warrant Issuance Agreement”), pursuant to which the Company agreed to issue to the Holder a warrant (the “Warrant”) to purchase 500,000 shares of the Company’s common stock, in consideration of the Holder’s agreement to enter into the Amendment.”

GCT Semiconductor Holding, Inc. amended Amendment No. 1 to Convertible Promissory Note with strategic investor (the Holder) valued at Amendment to Convertible Promissory Note extending maturity to February 26, 2028 (effective 2026-02-24).

“On February 24, 2026, GCT Semiconductor, Inc., a subsidiary of GCT Semiconductor Holding, Inc. (the “Company”), entered into Amendment No. 1 (the “Amendment”) to that certain Convertible Promissory Note, dated February 26, 2024 (the “Original Note” and, as amended by the Amendment, the “Note”) with a strategic investor (the “Holder”).”

GCT Semiconductor Holding, Inc. incurred convertible notes of up to $20,000,000 with Indigo Capital LP at will not bear interest maturing 24 months after issuance.

“On December 15, 2025, GCT Semiconductor Holding, Inc. (the "Company") entered into a Convertible Promissory Note Purchase Agreement (the "Purchase Agreement") with Indigo Capital LP (the "Purchaser"), pursuant to which the Company may issue and sell to the Purchaser convertible promissory notes (the "Convertible Notes") in an aggregate principal amount of up to $20,000,000.”

GCT Semiconductor Holding, Inc. incurred term loan of ₩15.0 billion South Korean Won (or approximately USD $10.7 million) with Anapass, Inc. at 7.0% per annum maturing September 10, 2026.

“The September Loan Agreement provides for a term loan facility of an aggregate principal amount of up to ₩15.0 billion South Korean Won (or approximately USD $10.7 million) (the “September Loan”). The September Loan will bear interest of 7.0% per annum and mature on September 10, 2026.”

GCT Semiconductor Holding, Inc. reported the first quarter ended March 31, 2024 results: revenue $3.3 million.

“GCT Semiconductor Holding, Inc. (“GCT” or the “Company”) (NYSE: GCTS), a leading designer and supplier of advanced 5G and 4G semiconductor solutions, today reported financial results for the first quarter ended March 31, 2024. First Quarter 2024 Financial Summary and Recent Operational Highlights · Revenues up by 7% as compared to the same quarter in 2023, to $3.3 million.”

GCT Semiconductor Holding, Inc. entered into Common Stock Purchase Agreement with B. Riley Principal Capital II, LLC valued at $50,000,000 (effective 2024-04-23).

“On April 23, 2024, GCT Semiconductor Holding, Inc. (the “Company”) entered into a Common Stock Purchase Agreement (the “Purchase Agreement”) and a related Registration Rights Agreement (the “Registration Rights Agreement”) with B. Riley Principal Capital II, LLC (“B. Riley Principal Capital II”).”

GCT Semiconductor Holding, Inc. dismissed Marcum LLP as its auditor.

“Accordingly, Marcum LLP (“Marcum”), Concord III’s independent registered public accounting firm prior to the Business Combination, was informed on April 4, 2024 that it was dismissed and replaced by BPM as the Company’s independent registered public accounting firm.”

GCT Semiconductor Holding, Inc. engaged BPM LLP as its auditor.

“On April 4, 2023, the Audit Committee of the Board of Directors of GCT Semiconductor Holding, Inc., (f/k/a Concord Acquisition Corp III) (the “Company”) approved the engagement of BPM LLP (“BPM”) as the Company’s independent registered public accounting firm to audit the Company’s consolidated financial statements for the fiscal year ended December 31, 2024, effective immediately.”

GCT Semiconductor Holding, Inc.: Company ceased to be a shell company upon consummation of the Business Combination.

“each of Concord III and the Company ceased to be a shell company”

GCT Semiconductor Holding, Inc.: Adopted Amended and Restated Bylaws effective as of the Closing Date.

“the Company adopted a Second Amended and Restated Certificate of Incorporation and the Amended and Restated Bylaws effective as of the Closing Date”

GCT Semiconductor Holding, Inc.: Adopted Second Amended and Restated Certificate of Incorporation effective as of the Closing Date.

“the Company adopted a Second Amended and Restated Certificate of Incorporation and the Amended and Restated Bylaws effective as of the Closing Date”

GCT Semiconductor Holding, Inc. underwent a change of control involving Concord Acquisition Corp III for $350 million (closed 2024-03-26).

“outstanding promissory notes issued by GCT that could be converted into shares of GCT common stock were so converted in accordance with their terms. The “Company Value” means $350 million, minus the amount of indebtedness of GCT immediately prior to the Closing, plus the amount of GCT’s cash and cash equivalents immediately prior to the Closing, plus the aggregate”

GCT Semiconductor Holding, Inc. entered into Convertible Promissory Note with a strategic investor (the 'Noteholder') valued at Principal amount of $5,000,000, convertible into Company Common Stock at $10.00 per share, interest (effective 2024-02-26).

“On February 26, 2024, GCT issued a convertible promissory note (the “Note”) to a strategic investor (the “Noteholder”) in the principal amount of $5,000,000. On or after the earlier of (i) six months from the issuance date of the Note and (ii) the closing of the Business Combination, the Noteholder may demand the Company to convert all principal and interests due under the Note into shares of Company Common Stock, at a conversion price of $10.00 per share. The Note matures on the second anniversary of the issuance date, and bears an interest rate of 5% per annum.”

GCT Semiconductor Holding, Inc. entered into 2024 Employee Stock Purchase Plan with Stockholders of Concord III valued at Approved and became effective GCT 2024 Employee Stock Purchase Plan (effective 2024-03-26).

“At the Special Meeting of stockholders of Concord III, the stockholders of Concord III considered and approved the GCT 2024 Employee Stock Purchase Plan (the “ESPP”). The ESPP was previously approved, subject to stockholder approval, by the Board of Directors of Concord III and became effective on the Closing Date.”

GCT Semiconductor Holding, Inc. entered into 2024 Incentive Plan with Stockholders of Concord III valued at Approved and became effective GCT 2024 Incentive Plan (effective 2024-03-26).

“At the Special Meeting of stockholders of Concord III, the stockholders of Concord III considered and approved the GCT 2024 Incentive Plan (the “Incentive Plan”). The Incentive Plan was previously approved, subject to stockholder approval, by the Board of Directors of Concord III and became effective on the Closing Date.”

GCT Semiconductor Holding, Inc. entered into Lock-Up Agreement with certain stockholders of GCT, including its directors, officers, affiliates and holders of more than 5% of outstanding shares valued at Stockholders agreed to not effect any sale or other transfer of Company Common Stock for a period up (effective 2024-03-26).

“On March 26, 2024, and in connection with the Closing, the Company and certain stockholders of GCT, including its directors, officers, affiliates and holders of more than 5% of outstanding shares of GCT common stock as of the Closing, entered into the Lock-Up Agreement, pursuant to which such stockholders agreed to not effect any sale or other transfer of Company Common Stock, subject to certain customary exceptions set forth in the Lock-Up Agreement, during the period commencing at the Closing and ending on the earlier of (i) one year following the Closing, (ii) such date as the Company completes a liquidation, merger, share exchange, reorganization or other similar transaction that results in all of the Company’s stockholders having the right to exchange their shares of Company Common Stock for cash, securities or other property or (iii) the date on which the last sale price of Company Common Stock equals or exceeds $12.00 per share (as adjusted for share splits, share consolidations”

GCT Semiconductor Holding, Inc. entered into Registration Rights Agreement with certain stockholders of GCT, the Sponsor and certain stockholders of Concord III valued at Company agreed to register for resale certain shares of Company Common Stock and other equity securi (effective 2024-03-26).

“On March 26, 2024 and in connection with the Closing, the Company, certain stockholders of GCT, the Sponsor and certain stockholders of Concord III entered into the Registration Rights Agreement, pursuant to which the Company agreed to register for resale certain shares of the Company’s common stock, par value $0.0001 per share (the “Company Common Stock”), and other equity securities that are held by the parties thereto from time to time.”

Nelson C. Chan was appointed as Independent Director at GCT Semiconductor Holding, Inc..

“On April 1, 2024, the Company announced Nelson C. Chan was appointed as an independent director to its Board, effective March 26, 2024.”

Edmond Cheng was appointed as Chief Financial Officer at GCT Semiconductor Holding, Inc..

“On March 22, 2024, GCT announced that the Board of Directors of GCT had appointed Edmond Cheng as Chief Financial Officer (CFO) effective March 18, 2024.”

GCT Semiconductor Holding, Inc. shareholders approved NYSE Proposal at the 2024-02-27 meeting.

“NYSE Proposal The proposal to approve, in connection with the Business Combination, for purposes of complying with applicable listing rules of the New York Stock Exchange, the issuance of shares of Common Stock to (i) the holders of GCT Common Stock in the merger pursuant to the Business Combination Agreement, (ii) the PIPE Investors (as defined in the Business Combination Agreement) pursuant to the PIPE Subscription Agreements (as defined in the Business Combination Agreement) and (iii) the CVT Investors (as defined in the Business Combination Agreement)”

GCT Semiconductor Holding, Inc. shareholders approved Employee Stock Purchase Plan Proposal at the 2024-02-27 meeting.

“Employee Stock Purchase Plan Proposal The proposal to approve and adopt the 2024 Employee Stock Purchase Plan established to be effective after the Closing was approved. The voting results of the shares of Common Stock were as follows: For Against Abstentions 11,001,661 0 0”

GCT Semiconductor Holding, Inc. shareholders approved Incentive Award Plan Proposal at the 2024-02-27 meeting.

“Incentive Award Plan Proposal The proposal to approve and adopt the incentive award plan established to be effective after the Closing of the Business Combination was approved. The voting results of the shares of Common Stock were as follows: For Against Abstentions 11,000,661 1,000 0”

GCT Semiconductor Holding, Inc. shareholders approved Election of Directors Proposal at the 2024-02-27 meeting.

“Election of Directors Proposal The proposal to elect, effective at Closing, six directors to serve staggered terms on our board of directors until the 2025, 2026 and 2027 annual meetings of stockholders, respectively, and until their respective successors are duly elected and qualified was approved. The voting results of the shares of Common Stock for the director nominees were as follows: Class I Director: Kukjin Chun For Withheld 11,001,661 0 Class II Directors: Robert Barker For Withheld 11,001,661 0 Hyunsoo Shin For Withheld 11,001,661 0 Class III Directors: John Schlaefer For Withheld 11,001,661 0 Jeff Tuder For Withheld 11,001,661 0 Dr. Kyeongho Lee For Withheld 11,001,661 0”

GCT Semiconductor Holding, Inc. shareholders approved Governance Proposal (e) To modify forum selection provision at the 2024-02-27 meeting.

“To modify the forum selection provision to designate the U.S. federal district courts as the exclusive forum for claims arising under the Securities Act rather than providing for concurrent jurisdiction in the Court of Chancery and the federal district court for the District of Delaware for claims arising under the Securities Act: For Against Abstentions 11,001,661 0 0”

GCT Semiconductor Holding, Inc. shareholders approved Governance Proposal (d) To require special meetings only to be called by board of directors at the 2024-02-27 meeting.

“To require that special meetings of stockholders may only be called by or at the direction of the board of directors pursuant to a resolution adopted by a majority of the total number of directors, subject to any special rights of the holders of preferred stock: For Against Abstentions 11,001,661 0 0”

GCT Semiconductor Holding, Inc. shareholders approved Governance Proposal (c) To require a two-thirds vote to remove a director at the 2024-02-27 meeting.

“To require the vote of at least two-thirds of the voting power of the outstanding shares of capital stock, rather than a simple majority, to remove a director from office: For Against Abstentions 11,000,661 1,00 0 0”

GCT Semiconductor Holding, Inc. shareholders approved Governance Proposal (b) To increase authorized shares of common stock and preferred stock at the 2024-02-27 meeting.

“To increase the number of shares of (i) common stock the Company is authorized to issue from 220,000,000 shares to 400,000,000 shares and (ii) preferred stock the Company is authorized to issue from 20,000,000 shares to 40,000,000 shares: For Against Abstentions 11,001,661 0 0”

GCT Semiconductor Holding, Inc. shareholders approved Charter Amendment Proposal at the 2024-02-27 meeting.

“Charter Amendment Proposal The proposal to adopt the proposed second amended and restated certificate of incorporation of the Company (the "Proposed Certificate of Incorporation") attached as Annex B to the proxy statement/prospectus was approved. The voting results of the shares of Common Stock were as follows: Common Stock For Against Abstentions 11,000,661 1,000 0”

GCT Semiconductor Holding, Inc. shareholders approved Business Combination Proposal at the 2024-02-27 meeting.

“Business Combination Proposal The proposal to approve and adopt the Business Combination Agreement, dated as of November 2, 2023 (as it may be amended and/or restated from time to time, the "Business Combination Agreement"), by and among the Company, GCT and Merger Sub, and the transactions contemplated thereby, pursuant to which Merger Sub will merge with and into GCT, with GCT surviving the merger and becoming a wholly-owned direct subsidiary of Concord III (collectively with the other transactions described in the Business Combination Agreement, the "Business Combination"), was approved. The voting results of the shares of Common Stock were as follows: For Against Abstentions 11,001,661 0 0”

GCT Semiconductor Holding, Inc. received a nyse noncompliance notice notice regarding shareholders (rules 802.01B).

“January 19, 2024, Concord Acquisition Corp III (the “Company”) received a notification (the “Notice”) from the New York Stock Exchange (the “NYSE”) informing the Company that, because the number of public stockholders is less than 300, the Company is not in compliance with Section 802.01B of the NYSE Listed Company Manual (the “Listing Rule”). The Listing Rule requires the Company to maintain a minimum of 300 public stockholders on a continuous basis. The Notice specifies that the Company has 45 days to submit a business plan that demonstrates how the Company expects to return to compliance wi”

GCT Semiconductor Holding, Inc.: Extended the date by which the company must consummate a business combination from November 8, 2023 to August 8, 2024 (effective 2023-11-07).

“the Company filed an amendment to its amended and restated certificate of incorporation, as amended, with the Delaware Secretary of State on November 7, 2023 (the “Charter Amendment”), to extend the date by which the Company has to consummate a business combination from November 8, 2023 to August 8, 2024”

GCT Semiconductor Holding, Inc. shareholders approved Approval of Charter Amendment to extend the date by which the Company has to consummate a business combination from the Termination Date to the Extended Date at the 2023-11-07 meeting.

“The stockholders approved the Charter Amendment to extend the date by which the Company has to consummate a business combination from the Termination Date to the Extended Date. The voting results were as follows: FOR AGAINST ABSTAIN BROKER NON- VOTES 12,272,538 309,973 0 N/A”

GCT Semiconductor Holding, Inc. entered into Non-Redemption Agreements with certain holders of the Company’s Class A common stock valued at an aggregate of 782,001 shares of Class A common stock (effective 2023-11-08).

“the “Company”) and Concord Sponsor Group III LLC (the "Sponsor") entered into non-redemption agreements (“Non-Redemption Agreements”), the form of which was previously disclosed, with certain holders of the Company’s Class A common stock, par value $0.0001 per share (the “Class A common stock”) in exchange for them agreeing not to redeem shares of Class A common stock sold in the Company’s initial public offering (“Non-Redeemed Shares”) at the special meeting called by the Company (the “Special Meeting”) to approve an extension of time for the Company to consummate an initial business combination from November 8, 2023 (the “Termination Date”) to August 8, 2024, or such earlier date as may be determined by the Company’s board of directors (the “Extension” and such later date, the “Extended Date”).”

GCT Semiconductor Holding, Inc. entered into Business Combination Agreement with GCT Semiconductor, Inc. valued at $350 million (effective 2023-11-02).

“On November 2, 2023, Concord Acquisition Corp III, a Delaware corporation (the “Company”) enterd into a business combination agreement (the “Business Combination Agreement”) with GCT Semiconductor, Inc., a Delaware corporation (“GCT”), and Gibraltar Merger Sub Inc., a Delaware corporation and a direct, wholly-owned subsidiary of the Company (“Merger Sub”).”

GCT Semiconductor Holding, Inc.: Extended the deadline to consummate a business combination from Termination Date to Extended Date (effective 2023-05-04).

“the Company filed an amendment to its amended and restated certificate of incorporation with the Delaware Secretary of State on May 4, 2023 (the “ Charter Amendment ”), to extend the date by which the Company has to consummate a business combination from the Termination Date to the Extended Date.”

GCT Semiconductor Holding, Inc. shareholders approved Charter Amendment to extend the date by which the Company has to consummate a business combination from the Termination Date to the Extended Date. at the 2023-05-04 meeting.

“The stockholders approved the Charter Amendment to extend the date by which the Company has to consummate a business combination from the Termination Date to the Extended Date. The voting results were as follows: FOR AGAINST ABSTAIN BROKER NON- VOTES 33,891,464 2,670,391 0 0”

GCT Semiconductor Holding, Inc. entered into "Non-Redemption Agreements" with certain third parties valued at an aggregate of 999,665 shares of the Company’s Class B common stock (effective 2023-04-06).

“on April 6, 2023, Concord Acquisition Corp III (the “ Company ”) and Concord Sponsor Group III LLC (the “ Sponsor ”), the Company’s sponsor, entered into agreements (“ Non-Redemption Agreements ”) with certain third parties”

GCT Semiconductor Holding, Inc. entered into Non-Redemption Agreements with one or more third parties (effective 2023-04-06).

“On April 6, 2023, Concord Acquisition Corp III (the “Company”) and Concord Sponsor Group III LLC (the “Sponsor”), the Company’s sponsor, entered into one or more agreements (the “Non-Redemption Agreements”) with one or more third parties in exchange for them agreeing not to redeem shares of the Company’s Class A common stock sold in its initial public offering (the “public shares”) in connection with the special meeting of stockholders called by the Company and scheduled to be held on May 4, 2023”

Larry Leibowitz was appointed as director at GCT Semiconductor Holding, Inc..

“Effective as of November 3, 2021, the following individuals were appointed to the board of directors of the Company: Peter Ort, Thomas King and Larry Leibowitz.”

Thomas King was appointed as director at GCT Semiconductor Holding, Inc..

“Effective as of November 3, 2021, the following individuals were appointed to the board of directors of the Company: Peter Ort, Thomas King and Larry Leibowitz.”

Peter Ort was appointed as director at GCT Semiconductor Holding, Inc..

“Effective as of November 3, 2021, the following individuals were appointed to the board of directors of the Company: Peter Ort, Thomas King and Larry Leibowitz.”