GCT Semiconductor Holding, Inc. filings document a fabless semiconductor issuer with NYSE-listed common stock and public warrants. Recent Form 8-K reports cover quarterly and annual financial results, 5G and 4G chipset licensing announcements, material definitive agreements, direct financial obligations and shareholder voting matters.
The company’s regulatory record includes disclosures on convertible promissory notes, warrant issuance agreements, a subsidiary loan facility, registered common-stock issuances and resale registration references. Governance filings report annual meeting results, director elections, auditor ratification and exchange-rule matters, while event reports identify the company’s Delaware corporate status and securities structure.
GCT Semiconductor Holding, Inc. director reports open-market stock purchase. A Class II director of GCT Semiconductor Holding, Inc. (GCTS) bought 16,725 shares of common stock on 11/25/2025 in a reported purchase transaction coded “P” at a price of $1.28 per share. After this trade, the reporting person beneficially owns 757,771 shares of GCT common stock in direct ownership. The filing is made on a Form 4, which discloses changes in insider ownership for a single reporting person.
GCT Semiconductor Holding, Inc. (GCTS) filed a Form 4 reporting open-market stock purchases by a Class II director. On 11/20/2025, the reporting person bought 25,453 shares of common stock at a price of $1.28 per share. On 11/21/2025, the same person purchased an additional 3,180 common shares at $1.28 per share. After these transactions, the director beneficially owns 741,046 shares of GCTS common stock in direct ownership.
GCT Semiconductor Holding, Inc. furnished an 8-K announcing its financial results for the quarter ended September 30, 2025. The update was released via a press release, which is included as Exhibit 99.1.
The company stated that the information under Item 2.02, including Exhibit 99.1, is furnished and not deemed filed under Section 18 of the Exchange Act, and is not incorporated by reference into other filings unless expressly stated. The filing also lists Exhibit 104 for the cover page interactive data file. GCT’s securities are listed on the NYSE under GCTS (common stock) and GCTS.WS (warrants).
GCT Semiconductor Holding (GCTS) filed its Q3 2025 10‑Q. Net revenues fell to $430 thousand from $2.61 million a year ago, producing a gross loss of $1.05 million versus a prior gross profit of $1.63 million. Operating loss widened to $9.25 million, and net loss increased to $13.85 million (vs. $7.12 million).
Year‑to‑date, net revenues were $2.11 million (vs. $7.34 million) with a net loss of $34.36 million. Cash and cash equivalents were $8.34 million at September 30, 2025, up from $1.44 million at year‑end, supported by financing: an ATM program generated $1.4 million net proceeds and a May 2025 registered direct offering provided $9.9 million. The company has the right to sell up to $50.0 million under a common stock purchase agreement and had utilized $9.9 million of that capacity through quarter‑end.
Total current liabilities rose to $87.11 million, including borrowings of $59.41 million and current convertible promissory notes of $5.29 million. Stockholders’ deficit increased to $(80.15) million. Management states that these conditions raise substantial doubt about continuing as a going concern. Shares outstanding were 57,099,558 as of November 7, 2025.
Jeffrey Tuder, a Class III Director of GCT Semiconductor Holding, Inc. (GCTS), was granted 18,092 restricted stock units (RSUs) on 09/30/2025. Each RSU represents the right to one share of common stock payable in shares under a deferral election, and the award was recorded at a $0 transaction price. After this grant, the reporting person beneficially owned 94,893 shares.
The number of shares issued under the RSU award is determined quarterly by dividing $27,500 by the fair market value per share; the FMV used on 09/30/2025 was $1.52. The RSUs vest on 03/31/2026, subject to continued service, and restricted stock units have no expiration date.
Shin Hyunsoo, a Class II Director of GCT Semiconductor Holding, Inc. (GCTS), acquired 18,092 restricted stock units (RSUs) on 09/30/2025 under the GCT 2024 Omnibus Incentive Compensation Plan. Each RSU represents the right to one share of common stock and was recorded at a fair market value of $1.52 per share on the acquisition date. Following the grant, the reporting person beneficially owns 712,413 shares. The RSUs are scheduled to vest on 03/31/2026, subject to continued service, and have no expiration date. The award amount each quarter through March 31, 2026, is set by dividing $27,500 by the per-share fair market value, rounded down.
Lee Kyeongho, a Chairman & Class III Director of GCT Semiconductor Holding, Inc. (GCTS), reported acquisition of 18,092 restricted stock units (RSUs) on 09/30/2025. Each RSU converts into one share of common stock following vesting; the RSUs were granted under a formula that divides $27,500 by the fair market value per share each quarter. The filing states the fair market value used on 09/30/2025 was $1.52 per share. After the reported award, the reporting person beneficially owns 1,039,825 shares. The RSUs are scheduled to vest on 03/31/2026 and have no expiration date.
GCT Semiconductor Holding, Inc. director Chun Kukjin was granted 18,092 restricted stock units (RSUs) on 09/30/2025. Each RSU converts to one share of common stock and was recorded at a fair market value of $1.52 per share based on the issuer's valuation on that date. The number of shares under the award is set by dividing $27,500 by the per-share fair market value each quarter during April 1, 2025–March 31, 2026; the RSUs vest on 03/31/2026 subject to continued service. Following this transaction, the reporting person beneficially owns 82,339 shares. The RSUs were reported as acquired at a $0 cash price because they are deferred equity awards.
GCT Semiconductor Holding, Inc. director Nelson Chan was granted 18,092 restricted stock units (RSUs) on 09/30/2025 under the GCT 2024 Omnibus Incentive Compensation Plan. Each RSU converts to one share of common stock following vesting; the grant size was determined by dividing a fixed cash amount of $27,500 by the fair market value per share of $1.52 on the transaction date, producing the rounded share count. The RSUs vest on 03/31/2026 subject to continued service, and no expiration date applies. After the grant, the reporting person beneficially owns 78,604 shares.
Robert Barker, a Class II Director of GCT Semiconductor Holding, Inc. (GCTS), was granted 18,092 restricted stock units (RSUs) on 09/30/2025. Each RSU converts to one share of Common Stock and the award was calculated by dividing a cash amount of $27,500 by the fair market value per share of $1.52 as of 09/30/2025, rounded down to whole shares. The RSUs are payable in Common Stock per a deferral election and will vest on 03/31/2026 subject to continued service through that date. After this grant, the reporting person beneficially owns 95,413 shares. No expiration date applies to the RSUs.