10-K: GCT Semiconductor's 2025 Losses Widen Amid 5G Transition

Sentiment:

Annual Report 25 March 2026 4:27 PM

📋All filings for Gct Semiconductor Holding, INC

GCT Semiconductor reported a significant increase in net loss for 2025, driven by reduced 4G sales and ongoing 5G development costs, despite initial 5G product shipments and new capital raise efforts.

Delay expectedThe 2024 convertible promissory note with a principal amount of $5.0 million, originally maturing in February 2026, had its maturity date extended to February 2028.A term loan agreement with Anapass, Inc. for KRW 4.5 billion ($3.1 million), originally maturing in March 2026, had its maturity date extended to March 2027.Several other related-party loans from Anapass, Inc. and Dr. Kyeongho Lee had their maturity dates extended in 2025 and early 2026.The company incurred penalties of 3% of principal per month on $2.9 million of loans from Dr. Kyeongho Lee that were past their maturity dates in 2025.

Capital raiseEntered into a Convertible Promissory Note Purchase Agreement with Obsidian Global GP LLC in March 2026, providing a facility for up to $20.0 million in aggregate principal amount of convertible promissory notes.Has $94.0 million of remaining equity funding capacity available under its universal shelf registration statement on Form S-3 (effective April 9, 2025) as of the filing date.Sold approximately 9.9 million shares under the At-Market (ATM) Agreement for gross proceeds of approximately $12.6 million in January and February 2026.Issued three Indigo Notes, each with a principal amount of $1.0 million, in January 2026, receiving gross proceeds of $2.8 million.The independent registered accounting firm expressed substantial doubt about the company's ability to continue as a going concern, indicating a critical need for additional financing.

Worse than expectedNet loss increased by 250% to $43.4 million in 2025 from $12.4 million in 2024.Total net revenues decreased by 69% to $2.9 million in 2025 from $9.1 million in 2024.Gross profit turned into a loss of $1.8 million in 2025 from a profit of $5.1 million in 2024.Cash and cash equivalents decreased to $0.6 million as of December 31, 2025, from $1.4 million in 2024.The independent registered accounting firm expressed substantial doubt about the company's ability to continue as a going concern.

Summary

Net loss increased by 250% to $43.4 million in 2025 from $12.4 million in 2024.
Total net revenues decreased by 69% to $2.9 million in 2025 from $9.1 million in 2024, primarily due to a 76% decrease in product sales to $1.1 million and a 60% decrease in service revenues to $1.7 million.
Gross profit turned into a loss of $1.8 million in 2025, compared to a profit of $5.1 million in 2024, as lower product revenue was insufficient to absorb production overheads.
Research and development expenses decreased by 19% to $14.0 million in 2025, mainly due to the completion of a 5G chip design project and reduced intellectual property expenses.
General and administrative expenses increased by 53% to $16.5 million in 2025, driven by a $3.2 million increase in expected credit loss estimates and a $3.2 million increase in stock-based compensation.
The company has an accumulated deficit of $605.4 million as of December 31, 2025, and negative working capital of approximately $67.7 million.
Short-term debt amounted to $56.6 million as of December 31, 2025, with total borrowings of $62.6 million.
Cash and cash equivalents decreased to $0.6 million as of December 31, 2025, from $1.4 million in 2024, and the company used $30.7 million in cash from operating activities in 2025.
The independent registered accounting firm expressed substantial doubt about the company's ability to continue as a going concern.
The company commenced its first production shipments of 5G products in the fourth quarter of 2025.
Entered into a Convertible Promissory Note Purchase Agreement with Obsidian Global GP LLC in March 2026, providing a facility for up to $20.0 million in aggregate principal amount of convertible promissory notes, with individual advances not exceeding $0.5 million.
Amended a term loan agreement with Anapass, Inc. to extend the maturity date from March 2026 to March 2027.

Sentiment

Score: 3

Explanation: StockSavvy.ai views this as a highly concerning report due to significant financial deterioration, including a substantial increase in net loss and negative gross margins, coupled with an explicit 'going concern' warning from auditors, despite some positive strategic developments in 5G.

Positives

Commenced first production shipments of 5G products in the fourth quarter of 2025, marking a significant step in its strategic transition.
Expects average sales prices for 5G chipsets to be approximately four times that of 4G chipsets, projecting a significant increase in future revenue and gross margins.
Maintains a strong competitive position in wireless communication chipsets due to proprietary multi-antenna technology and extensive compatibility testing capabilities, which are difficult for new entrants to replicate.
Enjoys longstanding relationships with Tier 1 and Tier 2 network operators globally, some of whom have actively contributed to funding and defining the company's 5G roadmap.
Offers highly differentiated and innovative modem architecture that enables scalable products with optimized cost structures, utilizing cheaper wafer process nodes without compromising performance.
Provides fully integrated 4G/5G System-on-Chips (SoCs) that reduce device size, cost, design complexity, and power consumption for customers.
Positioned as a competitive alternative to dominant chipset providers, offering lower initial licensing costs and no additional licensing fees after commercialization.
Secured a new convertible promissory note facility with Obsidian Global GP LLC for up to $20.0 million, providing additional liquidity options.

Negatives

Net loss increased by 250% to $43.4 million in 2025 from $12.4 million in 2024, indicating significant financial deterioration.
Total net revenues decreased by 69% to $2.9 million in 2025 from $9.1 million in 2024, reflecting a substantial decline in sales.
Gross profit turned into a loss of $1.8 million in 2025, compared to a profit of $5.1 million in 2024, due to insufficient revenue to cover production overheads.
Reported an accumulated deficit of $605.4 million and negative working capital of approximately $67.7 million as of December 31, 2025.
Has significant short-term debt of $56.6 million due within 12 months from December 31, 2025, posing immediate liquidity challenges.
Incurred penalties of 3% of principal per month on $2.9 million of past-due loans from Dr. Kyeongho Lee in 2025.
Cash and cash equivalents decreased to $0.6 million as of December 31, 2025, from $1.4 million in 2024, with $30.7 million used in operating activities in 2025.
The independent registered accounting firm expressed substantial doubt about the company's ability to continue as a going concern.
Relies on a small number of customers for a significant percentage of its revenue (74% from four customers in 2025), making it vulnerable to customer concentration risk.
Does not have long-term capacity agreements with its foundries, risking insufficient manufacturing capacity or increased costs during periods of high demand.

Risks

Difficulties or challenges in satisfying obligations under 5G development agreements and scaling/sustaining commercialization of 5G chipsets, which may adversely affect revenue generation.
The 5G market developing more slowly than expected, or failure to accurately predict market requirements or demand for 5G solutions, could adversely affect financial performance.
Products target specific 5G market segments (fixed wireless access, mobile broadband, M2M applications); if these markets do not develop or grow as anticipated, financial performance will be adversely affected.
Dependence on the commercial deployment of 4G LTE and 5G communications equipment, products, and services; business may be harmed if wireless carriers delay 5G adoption or deploy technologies not supported by solutions.
Unsuccessful in developing and selling new products or penetrating new markets, leading to product obsolescence, decreased revenue, and loss of design wins.
Customers not designing semiconductor solutions into their product offerings or their product offerings not being commercially successful, which would make it difficult to sell semiconductor solutions.
Inability to compete effectively against established semiconductor companies with longer operating histories, greater resources, and brand recognition.
Reliance on a small number of customers for a significant percentage of revenue, and the loss of, or a reduction in, orders from these customers could result in a substantial decline in revenue.
Customers may cancel orders, change production quantities, or delay production, and failure to forecast demand accurately may result in product shortages, delays, or excess/insufficient inventory.
Lack of long-term capacity agreements with foundries, which may not allocate sufficient capacity to meet future demands or may increase prices.
Foundry vendors not achieving satisfactory yields or quality, harming reputation, customer relationships, and financial performance.
Business may be impacted by political events, war, terrorism, business interruptions, and other geopolitical events and uncertainties beyond control, including the Russian-Ukraine and conflicts in the Middle East.
History of losses and inability to achieve or sustain profitability in the future, on a quarterly or annual basis.
Significant ongoing capital requirements that could materially affect business and financial condition if unable to generate sufficient cash from operations or raise capital on favorable terms.
Indebtedness could adversely affect operations, including the ability to perform obligations and fund working capital.
Failure to protect intellectual property rights adequately could impair the ability to compete effectively or to defend from litigation.
The enforcement and protection of intellectual property may be expensive, could fail to prevent misappropriation, result in loss of ability to enforce patents, and be adversely affected by changes in patent laws or ineffective enforcement in foreign jurisdictions.
Reliance upon third parties for supporting technology integrated into some products; inability to continue to use this technology and future technology would limit the ability to sell technologically advanced products.
The market price of Common Stock may be volatile, which could cause the value of investment to decline.
Delaware law, Charter, and Bylaws contain provisions that could delay or discourage takeover attempts that stockholders may consider favorable.
No intention to pay dividends on Common Stock, so return on investment depends on stock price appreciation.
The semiconductor and communications industries are cyclical and have historically experienced significant fluctuations, including prolonged downturns and periods of supply imbalance.
Rapidly changing standards could make semiconductor solutions obsolete, causing operating results to suffer.
Changes in current laws or the imposition of new laws regulating wireless networks and radio frequency emission could impede the sale of products.
The large amount of capital required to obtain radio frequency licenses, deploy and expand wireless networks, and obtain new subscribers could slow the growth of the wireless communications industry.
Decrease in market demand due to uncertain economic conditions in the United States and international markets, exacerbated by concerns of terrorism, war, and social and political instability.
Changes in trade policies, sanctions, export controls, or broader political and regulatory conditions, including disruptions in government operations, could reduce demand for products or limit ability to sell/transfer products.
Legislative or regulatory initiatives related to climate change, as well as physical effects of climate-related events, could adversely affect business.
Ability to compete is affected by certain regulatory developments that historically benefited products (e.g., restrictions against Chinese companies); changes in such regulations may adversely affect sales.
Operating results may fluctuate from period to period, making it difficult to predict quarterly operating results, which could cause the market price of Common Stock to decline.
Business depends on international customers, suppliers, and operations in Asia, subjecting it to additional risks, including increased complexity and costs of managing international operations and geopolitical instability.
Business operations could be significantly harmed by natural disasters or global epidemics (e.g., earthquakes in California/Pacific Rim, COVID-19).
Failure to comply with governmental laws and regulations could harm business.
The enactment of legislation implementing changes in U.S. taxation of international business activities or the adoption of other tax reform policies could materially impact financial position and results of operations.
May be subject to securities or class action litigation, which is expensive and could divert management attention.
Exclusive forum provisions in Charter and Bylaws may limit stockholders' ability to bring claims in a judicial forum they find favorable.
The loss of any key personnel or failure to attract or retain specialized technical, management, or sales and marketing talent could impair the ability to grow the business.
Being a public company increases operating costs and administrative burdens and exposes the company to risks relating to compliance with public company reporting requirements, including Section 404 of the Sarbanes-Oxley Act.
Business and operations could suffer in the event of security breaches.

Future Outlook

The company anticipates continued demand for its existing 4G LTE product lineup, expecting it to coexist with 5G products at lower price points. It projects that average sales prices for 5G chipsets will be approximately four times that of 4G chipsets, leading to a significant increase in future revenue and gross margins. Operational efficiencies are expected to improve as 5G product sales contribute more significantly to overall revenue, anticipated later in 2026. The company plans to continuously expand its product lineup to support 5G chipsets for future applications such as vehicle-to-everything (C-V2X), 5G-based satellite communication (Non-Terrestrial Network), and 5G-based IoT (RedCap). Significant ongoing operating expenditures are expected for mass production of 5G and other products, IP acquisition, tool enhancement, hiring, and engineering equipment improvement. Management believes it will be able to secure additional capital and funding in the next 12 months to sustain operations, despite the auditor's going concern warning.

Management Comments

"We plan to continuously expand our product lineup to support 5G chipsets for future applications such as vehicle-to-everything standard (e.g., C-V2X), 5G-based satellite communication (e.g., Non-Terrestrial Network), and 5G-based IoT standard (e.g., RedCap)."
"We expect the average sales prices for our 5G chipset to be approximately four times that of our 4G chipset, resulting in a significant increase in revenue and gross margins."
"We expect operational efficiencies to improve when our 5G product sales start contributing more significantly to our overall revenue, which is expected later in 2026, following the commercial launch of our 5G chipset in the fourth quarter of 2025."
"While we believe we will be able to secure additional capital and funding in the next 12 months to sustain our operations, the report of our independent registered accounting firm included in this Form 10-K includes a paragraph expressing substantial doubt about our ability to continue as a going concern."

Industry Context

StockSavvy.ai notes that GCT Semiconductor operates in a highly competitive and cyclical semiconductor industry, characterized by rapid technological change and significant capital investment. The company's focus on 5G solutions aligns with global trends of increasing 5G subscription penetration, particularly in North America (79% by end of 2025) and Northeast Asia (61%). The expansion of Fixed Wireless Access (FWA) services, projected to grow at an 11.5% CAGR (2025-2030) and with 5G-based FWA growing over 31% CAGR, presents a significant market opportunity. GCT's multi-antenna modem technology and integrated SoC solutions offer differentiation in a market dominated by a few major players like Qualcomm and MediaTek, especially given political sanctions affecting competitors like HiSilicon. The challenges faced by Apple in developing its own 5G modem underscore the high barriers to entry and complexity of this market, positioning GCT as a valuable alternative supplier.

Comparison to Industry Standards

GCT's 5G FWA technology can deliver speeds exceeding 1Gbps and network latency of approximately 1ms or less, offering performance comparable to optical fiber communications and addressing shortcomings of traditional wireless connections.
The company differentiates itself from the dominant chipset provider in the market by providing customized solutions tailored to specific wireless carrier needs, offering lower initial licensing costs and no additional licensing fees after commercialization, unlike the large upfront fees and ongoing royalties often required by top-ranked suppliers.
GCT's proprietary eight-antenna reception technology for improved efficiency and network coverage expansion is highly recognized and needed by many wireless carriers and FWA device manufacturers, providing a unique competitive advantage in entry-level baseband/RF chipsets.
The challenges faced by Apple in developing its own 5G modem (acquiring Intel's division in 2019, first production modem in iPhone 16e in 2025 benchmarked as slower and lacking FR2 mmWave access) highlight the high barriers to entry and GCT's established position as one of only a handful of companies globally with commercially proven 4G LTE and soon 5G solutions.

Management Changes

Role	Previous Person	New Person	Effective Date	Reason
Chief Financial Officer	NA	Edmond Cheng	March 18, 2024	Commenced employment with the Company.

Corporate Governance

Change Type	Description	Effective Date	Impact Assessment
Board Classification	The Board of Directors is divided into three classes, each serving a three-year term, with approximately one-third of directors elected annually. This structure makes it more difficult for stockholders to change the composition of the Board.	March 26, 2024	Functions as an anti-takeover measure, potentially reducing stockholder influence over board changes and management.
Stockholder Action Limitations	Stockholders may not take action by written consent and special meetings can only be called by or at the direction of the Board. This prohibits a holder controlling a majority of common stock from calling a special meeting or acting by written consent.	March 26, 2024	Delays the ability of stockholders to force consideration of proposals or take action, potentially entrenching existing management.
Advance Notice Requirements	Bylaws require timely notice for stockholders seeking to bring business before annual meetings or to nominate director candidates.	March 26, 2024	May preclude stockholders from bringing matters or nominations before annual meetings, reinforcing existing board control.
Bylaws Amendment	Bylaws may be amended or repealed by a majority vote of the Board, or by the affirmative vote of holders of at least 50% of the outstanding voting capital stock.	March 26, 2024	Provides flexibility for the Board to amend bylaws, but also allows significant stockholder influence if a majority vote is achieved.
Board Vacancies	New directorships or vacancies on the Board can only be filled by the vote of a majority of the remaining directors then in office.	March 26, 2024	Limits stockholder influence over filling board vacancies, potentially maintaining the existing board composition.
Forum Selection	The Delaware Court of Chancery is designated as the sole and exclusive forum for certain corporate disputes, and federal district courts for Securities Act claims. New York courts are designated for Private Placement Warrants disputes.	March 26, 2024	Aims for increased consistency in the application of Delaware and federal law but may discourage lawsuits against directors and officers and increase costs for stockholders to bring claims in other jurisdictions.
Section 203 DGCL Applicability	The company is subject to Section 203 of the DGCL, which generally prohibits business combinations with interested stockholders (owning 15% or more of voting stock) for a three-year period unless certain conditions are met.	NA	Discourages hostile takeovers and may prevent changes in the Board, potentially making transactions stockholders deem beneficial more difficult.
Limitation on Liability and Indemnification	The Charter eliminates or limits the monetary liability of directors and officers for breaches of fiduciary duty to the fullest extent permitted by Delaware law and permits indemnification and advancement of expenses.	March 26, 2024	May discourage stockholders from bringing lawsuits against directors and officers, potentially reducing derivative litigation and shifting settlement costs to the company, but helps attract and retain qualified personnel.
Code of Business Conduct and Ethics	Adopted a Code of Business Conduct and Ethics applicable to directors, officers, and employees.	NA	Promotes ethical conduct and compliance with applicable federal securities laws and NYSE listing standards.
Clawback Policy	Maintains a clawback policy for incentive-based compensation received by executive officers in the event of an accounting restatement due to material noncompliance with financial reporting requirements.	March 15, 2024	Aligns executive incentives with financial reporting accuracy and complies with Section 10D of the Exchange Act.
Insider Trading Policies	Adopted an insider trading policy governing the purchase, sale, and other dispositions of its securities by directors, senior management, and employees.	NA	Designed to promote compliance with insider trading laws, rules, and regulations.

Legal Proceedings

Not currently a party to any material legal proceedings.
May become involved in legal proceedings in the ordinary course of business from time to time.
Litigation, regardless of outcome, could have a material adverse effect due to defense and settlement costs, diversion of management resources, negative publicity, and reputational harm.
Third parties may claim infringement of intellectual property rights, which could lead to costly litigation, product delays, or require expensive royalty or licensing agreements.

Related Party Transactions

**Anapass, Inc. (Major Stockholder, Dr. Kyeongho Lee is Chairman)**:
Borrowings: $29.619 million outstanding as of December 31, 2025 ($12.245 million as of December 31, 2024).
Other current liabilities: $38 thousand as of December 31, 2025 ($14 thousand as of December 31, 2024).
Interest expense: $1.2 million in 2025 ($0.5 million in 2024).
Provided certificates of deposit as collateral to KEB Hana Bank to secure the company's obligations under a $6.3 million loan.
Loan agreements with Anapass, Inc. had maturity dates extended multiple times (e.g., July 2025 to July 2026 for a $4.5 million loan; November 2025 to November 2026 for a $2.2 million loan; September 2025 to September 2026 for a $3.0 million loan; December 2025 to December 2026 for a $3.4 million loan; March 2026 to March 2027 for a $3.1 million loan).
Entered into new term loan agreements with Anapass, Inc. in March 2025 ($3.1 million), July 2025 ($2.1 million), August 2025 ($1.4 million), and September 2025 ($10.7 million).
Private Placement in September 2024: Issued 741,603 shares of common stock and 148,320 equity-classified common stock warrants to Anapass, Inc. for $2.2 million cash.
**Dr. Kyeongho Lee (Chairman of the Board)**:
Borrowings: $8.711 million outstanding as of December 31, 2025 ($5.517 million as of December 31, 2024).
Other current liabilities: $2.611 million as of December 31, 2025 ($86 thousand as of December 31, 2024).
Interest expense: $3.0 million in 2025 ($0.1 million in 2024), including $2.9 million in penalties for past-due loans.
Loan agreements with Dr. Lee had maturity dates extended multiple times (e.g., November 2024 to November 2025, then to November 2026 for promissory notes; May 2024 to November 2024, then to May 2025, then to August 2025, then to December 2025 for a term loan).
Entered into new term loan agreements with Dr. Lee in November 2024 ($2.9 million), December 2024 ($0.7 million and $1.4 million), and January 2025 ($4.4 million).
Partially repaid Dr. Lee $1.4 million in October 2025 and KRW 1.4 billion ($1.0 million) in January 2026.
Repaid Dr. Lee KRW 110.0 million ($0.1 million) in October 2025.
Issued 500,000 warrants to a holder of 2024 Convertible Promissory Notes (likely Dr. Lee or an entity he controls) in February 2026 in connection with a maturity date extension.

Stakeholder Impact

**Shareholders**: Face significant dilution risk from ongoing equity raises (ATM, RDO, convertible notes). The stock price is subject to high volatility due to financial performance and market conditions. There is a potential for substantial loss of investment due to the 'going concern' doubt. Limited voting power is imposed by anti-takeover provisions, and no dividends are expected in the foreseeable future.
**Employees**: Anticipate increased headcount in R&D, sales, and marketing functions. Stock-based compensation is a significant component of general and administrative expenses. However, there is a risk of job insecurity if the company's financial performance does not improve sustainably.
**Customers (OEMs/ODMs, Wireless Carriers)**: May benefit from GCT's competitive 5G chipsets, multi-antenna technology, and customized solutions. However, they face a risk of supply chain disruptions if GCT cannot secure adequate foundry capacity or manage production effectively. Delays in GCT's product development could also impact their own product launch schedules.
**Suppliers (Foundries, Assembly/Test Vendors)**: GCT's financial instability, recurring losses, and reliance on short-term purchase orders could pose credit risk. While GCT's need for increased capacity could benefit them, GCT's lack of long-term agreements means suppliers may prioritize larger, more stable customers.
**Creditors (Banks, Related Parties, Convertible Note Holders)**: Face high risk due to significant short-term debt, recurring losses, and the 'going concern' warning. Repayment is heavily dependent on GCT's ability to generate positive cash flows or raise additional capital. Related parties (Anapass, Dr. Lee) are providing substantial ongoing financing, indicating their continued support but also their significant exposure to the company's financial health.

Next Steps

Continuously expand product lineup to support 5G chipsets for future applications such as C-V2X, Non-Terrestrial Network, and RedCap.
Negotiate long-term supply agreements with main foundries (UMC, Samsung) to secure capacity commitments and mitigate supply chain risks.
Generate positive cash flows from operations and renegotiate existing debt obligations to improve liquidity.
Raise additional capital through debt or equity financing, utilizing the remaining equity funding capacity under the shelf registration statement and the new Obsidian Global GP LLC facility.
Finance mass production of 5G and other products, including mask sets, wafers, and design house fees.
Acquire additional intellectual property and enhance tools to develop next-generation products.
Hire additional personnel in engineering, sales, and marketing functions to support growth and product development.
Improve engineering equipment to enhance product development capabilities.
Continue ongoing certification for evolving chipsets to ensure compliance with regulatory and operator requirements and facilitate market adoption.

Key Dates

Date	Description
2011-05-05	GCT's board of directors adopted and stockholders approved the Amended and Restated 2011 Incentive Compensation Plan.
2016-07	Company entered into an unsecured term loan agreement with KEB Hana Bank for KRW 9.0 billion ($6.7 million).
2016-07	Company entered into a loan agreement with Anapass, Inc. for KRW 6.0 billion ($4.5 million).
2017-01	Company entered into a term loan agreement with IBK Industrial Bank for KRW 9.2 billion ($6.8 million).
2017-05-19	Dr. Lee loaned KRW 500.0 million ($0.3 million) to GCT Research.
2017-05-24	Dr. Lee loaned KRW 700.0 million ($0.5 million) to GCT Research.
2017-05-30	Dr. Lee loaned KRW 500.0 million ($0.3 million) to GCT Research.
2018-03-14	Stock option granted to John Schlaefer.
2019-04-19	Stock options granted to John Schlaefer and Alex Sum.
2019-12-20	General Services Agreement entered into with Verizon Sourcing LLC.
2020-05-27	Dr. Lee loaned KRW 400.0 million ($0.3 million) to GCT Research.
2020-06-08	Stock options granted to John Schlaefer and Alex Sum.
2020-07	Research and development agreement (Samsung Agreement) entered into with Samsung Electronics Co., Ltd.
2021-03-01	Sponsor purchased 7,187,500 shares of Concord III Class B common stock.
2021-03-25	Sponsor sold 1,437,500 Founder Shares to CA2 and 25,000 to each independent director.
2021-10	Company entered into a term loan and security agreement with M-Venture Investment, Inc. for KRW 5.0 billion ($3.7 million).
2021-11	Concord III effected a stock dividend of 1,437,500 shares with respect to Class B common stock.
2021-11-03	Concord III issued Private Placement Warrants and Public Warrants.
2021-11-03	Letter agreement entered into among the Registrant, the Sponsor, CA2 Co-Investment LLC, and executive officers, directors, and initial stockholders.
2021-11-03	Investment Management Agreement entered into between Continental Stock Transfer & Trust Company and the Registrant.
2021-11-03	Registration Rights Agreement entered into between the Registrant, the Sponsor, and certain securityholders.
2021-11-03	Private Placement Warrants Subscription Agreements entered into with the Sponsor and CA2 Co-Investment LLC.
2021-12-02	Dr. Lee loaned KRW 1,000.0 million ($0.7 million) to GCT Research.
2022-04	Company entered into a term loan and security agreement with M-Venture Investment, Inc. for KRW 1.0 billion ($0.7 million) and KRW 5.0 billion ($3.7 million).
2023-04	Sponsor entered into non-redemption agreements with certain holders of Concord III Class A common stock.
2023-11-02	Business Combination Agreement dated.
2023-11	Concord III and the Sponsor entered into non-redemption agreements with certain holders of Concord III Class A common stock.
2023-12	The Company's board of directors adopted the 2024 Employee Stock Purchase Plan and the 2024 Omnibus Incentive Compensation Plan.
2023-12-11	Restricted stock units granted to Alex Sum.
2024-02	The 2024 ESPP and 2024 Plan were approved by the Company's stockholders.
2024-02	Company issued convertible promissory notes to CVT Investors for an aggregate principal amount of $13.3 million.
2024-02	Company issued a convertible promissory note to a strategic investor for a principal amount of $5.0 million.
2024-02-26	Foundry Product Development Agreement (Alpha Agreement) entered into with Alpha Holdings Co., Ltd. for $7.6 million.
2024-03-18	Edmond Cheng commenced employment as Chief Financial Officer.
2024-03-26	Business Combination closed, Concord III renamed GCT Semiconductor Holding, Inc.
2024-03-26	Lock-Up Agreement entered into with certain stockholders.
2024-03-26	Registration Rights Agreement entered into.
2024-03-26	Side Letter to Sponsor Support Agreement entered into.
2024-03-26	Sponsor Incentive Allocation occurred.
2024-04	Company executed an amendment to extend KEB Hana Bank loan maturity to April 2025.
2024-04	Company executed an amendment with M-Venture Investment, Inc. to repay KRW 2.0 billion ($1.5 million).
2024-04	Company executed an amendment with M-Venture Investment, Inc. to extend maturity dates of two draws.
2024-04-23	Common Stock Purchase Agreement and Registration Rights Agreement entered into with B. Riley Principal Capital II, LLC.
2024-05	Company repaid M-Venture Investment, Inc. term loan in full.
2024-05	Company executed an amendment with Anapass, Inc. to extend loan maturity to May 2025.
2024-06	Company repaid i Best Investment Co., Ltd term loans in full.
2024-06	Company issued 110,000 shares of common stock to an underwriter.
2024-06-27	RSU awards granted to non-employee directors.
2024-07	Company executed an amendment to extend KEB Hana Bank loan maturity to July 2025.
2024-07	Company repaid M-Venture Investment, Inc. loan of KRW 1.0 billion ($0.7 million) and assigned remaining balance to Mujin Electronics Co., Ltd.
2024-07	Sponsor Earnout Shares subject to market-based vesting condition reduced to 570,796 shares.
2024-08	Company repaid note payable to an individual investor.
2024-08-21	RSUs granted to various employees, including Edmond Cheng.
2024-09	Private Placement with Anapass, Inc. (741,603 shares and 148,320 warrants) for $2.2 million cash.
2024-09	Company executed an amendment with Anapass, Inc. to extend loan maturity to September 2025.
2024-10	Company executed an amendment with Mujin Electronics Co., Ltd. to extend maturity date to June 2025.
2024-10	Company executed an amendment with i Best Investment Co., Ltd. to extend maturity date to May 2025.
2024-11	Company entered into a term loan agreement with Dr. Kyeongho Lee for KRW 4.0 billion ($2.9 million).
2024-11	Company executed two amendments with Dr. Kyeongho Lee to extend promissory notes and term loan maturity dates.
2024-12	Company entered into a new term loan agreement with Anapass, Inc. for KRW 5.0 billion ($3.4 million).
2024-12	Company entered into two term loan agreements with Dr. Kyeongho Lee for KRW 1.0 billion ($0.7 million) and KRW 2.0 billion ($1.4 million).
2024-12	RSUs granted to various employees.
2025-01-24	Company entered into a term loan agreement with Dr. Kyeongho Lee for KRW 6.5 billion ($4.4 million).
2025-02	Company executed an amendment with i Best Investment Co., Ltd. to extend maturity date to May 2025.
2025-03	Company entered into a term loan agreement with Anapass, Inc. for KRW 4.5 billion ($3.1 million).
2025-04	Company executed an at-market issuance sales agreement (ATM Agreement) for up to $75.0 million.
2025-04	Company executed an amendment to extend KEB Hana Bank loan maturity to April 2026.
2025-05	Company entered into a registered direct offering (RDO) for 7,006,370 shares and 10,509,555 warrants, raising $11.0 million gross.
2025-05	Company executed an amendment with Anapass, Inc. to extend loan maturity to November 2025.
2025-05	Company paid in full i Best Investment Co., Ltd term loans ($1.5 million).
2025-05-07	RSU awards granted to non-employee directors.
2025-06	Company executed an amendment with IBK Industrial Bank to change interest rate.
2025-06	Company executed an amendment with Mujin Electronics Co., Ltd. to extend maturity date to October 2025.
2025-06	Company made a $0.7 million repayment to i Best Investment Co., Ltd and extended maturity date to December 2025.
2025-07	Company executed an amendment with Anapass, Inc. to extend loan maturity to July 2026.
2025-07	Company entered into a term loan agreement with Anapass, Inc. for KRW 3.0 billion ($2.1 million).
2025-07	The One Big Beautiful Bill Act (OBBBA) was enacted in the United States.
2025-08	Company entered into a term loan agreement with Anapass, Inc. for KRW 2.0 billion ($1.4 million).
2025-09	Company entered into a term loan agreement with Anapass, Inc. for KRW 15.0 billion ($10.7 million).
2025-09	Company granted officers 300,000 RSUs.
2025-09-19	RSUs granted to John Schlaefer, Edmond Cheng, and Alex Sum.
2025-10	Company partially repaid Dr. Kyeongho Lee $1.4 million.
2025-10	Company repaid Dr. Kyeongho Lee term loan of KRW 110.0 million ($0.1 million).
2025-10	Company executed an amendment with Mujin Electronics Co., Ltd. to extend maturity date to December 2025.
2025-11	Company executed an amendment with Anapass, Inc. to extend loan maturity to November 2026.
2025-11	Company executed an amendment with Dr. Kyeongho Lee to extend promissory notes maturity dates to November 2026.
2025-12	Company entered into a convertible promissory note purchase agreement with Indigo Capital LP for up to $20.0 million.
2025-12	Company issued two Indigo Notes, each with a principal amount of $1.0 million.
2025-12	First Indigo Note converted into 903,710 shares of common stock.
2025-12	Company executed an amendment with Mujin Electronics Co., Ltd. to extend maturity date to April 2026.
2025-12	Company executed an amendment with Anapass, Inc. to extend loan maturity to December 2026.
2025-12-31	Fiscal year end. First commercial shipments of 5G products commenced in Q4 2025.
2026-01	Company partially repaid Dr. Kyeongho Lee KRW 1.4 billion ($1.0 million).
2026-01	Company issued three Indigo Notes, each with a principal amount of $1.0 million.
2026-01	Indigo Notes with a principal amount of $4.0 million converted into 4.4 million shares of common stock.
2026-02	Company executed an amendment to extend the maturity date of the 2024 convertible promissory notes ($5.0 million principal) to February 2028.
2026-02	Company issued 500,000 warrants to a holder of the 2024 Convertible Promissory Notes.
2026-01-01_2026-02-28	Company sold approximately 9.9 million shares of common stock under the ATM Agreement for gross proceeds of approximately $12.6 million.
2026-03	Company entered into a Convertible Promissory Note Purchase Agreement with Obsidian Global GP LLC for up to $20.0 million.
2026-03	Company executed an amendment with Anapass, Inc. to extend the maturity date from March 2026 to March 2027 for a term loan of KRW 4.5 billion ($3.1 million).
2026-03-19	Number of Common Stock outstanding was 72,494,116.
2026-03-25	Date of Annual Report on Form 10-K filing.

Recommendation

strong sell

The company's financial position is extremely precarious, evidenced by a 250% increase in net loss, negative gross margins, and an explicit 'going concern' warning from its auditors. While there are strategic positives in 5G product development and market positioning, the immediate financial health, heavy reliance on related-party debt, and continuous need for capital raises (which dilute existing shareholders) present severe risks. The significant short-term debt obligations ($56.6 million due within 12 months) and consistent negative cash flow from operations indicate a high probability of further financial distress or restructuring that would negatively impact equity holders.

Keywords

5G, 4G LTE, Semiconductor, Chipsets, Wireless Communication, Fixed Wireless Access (FWA), Mobile Broadband, M2M, IoT, Fabless, RF Transceivers, Modems, Corporate Governance, SEC Filing, Financial Reporting, Risk Management, Capital Raise, Convertible Notes, Warrants, Delaware General Corporation Law (DGCL), Intellectual Property

Disclaimer:The information provided here is for general informational purposes only and does not constitute financial advice, recommendation, or endorsement of any kind. It may contain errors or omissions. You should not rely on this information to make financial decisions. Always seek the advice of a qualified financial professional before making any investment or financial decisions. Use of this information is at your own risk.