Welcome to our dedicated page for GCT Semiconductor Holding SEC filings (Ticker: GCTS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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.
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.
John Schlaefer, President, CEO and Class III Director of GCT Semiconductor Holding, Inc. (GCTS), received a distribution of 555 shares of common stock on 09/26/2025 from Parakletos @ Venture Millennium Fund LP for no consideration. After the transaction the reporting person beneficially owns 202,728 shares, held directly. The Form 4 was signed by an attorney-in-fact, Edmond Cheng, on 09/30/2025. The filing documents an insider acquisition that modestly increases the reporting person’s direct stake in the company.
Kim Jeong-Min, Chief Technology Officer of GCT Semiconductor Holding, Inc. (GCTS), was granted 75,000 restricted stock units (RSUs) on 09/19/2025. The RSUs are a contingent right to receive one share of common stock each and vest in four equal annual installments of 25% beginning on 09/19/2026, subject to continued service. After the grant the reporting person beneficially owned 302,701 shares. The Form 4 was signed by an attorney-in-fact on 09/22/2025. The filing documents a standard executive equity award intended for retention and aligns the officer’s compensation with shareholder value.
Kim Jeong-Min, Chief Technology Officer of GCT Semiconductor Holding, Inc. (GCTS), was granted 75,000 restricted stock units (RSUs) on 09/19/2025. The RSUs are a contingent right to receive one share of common stock each and vest in four equal annual installments of 25% beginning on 09/19/2026, subject to continued service. After the grant the reporting person beneficially owned 302,701 shares. The Form 4 was signed by an attorney-in-fact on 09/22/2025. The filing documents a standard executive equity award intended for retention and aligns the officer’s compensation with shareholder value.
GCT Semiconductor Holding, Inc. reported a grant of 75,000 restricted stock units (RSUs) to John Schlaefer, who serves as President, CEO and a Class III director. The RSUs were granted on September 19, 2025 and vest over four years in equal 25% installments on each anniversary beginning September 19, 2026, subject to continued service. After the grant, the reporting person beneficially owns 202,173 shares of common stock. The Form 4 was signed by an attorney-in-fact on September 22, 2025.
GCT Semiconductor Holding, Inc. reported a grant of 75,000 restricted stock units (RSUs) to John Schlaefer, who serves as President, CEO and a Class III director. The RSUs were granted on September 19, 2025 and vest over four years in equal 25% installments on each anniversary beginning September 19, 2026, subject to continued service. After the grant, the reporting person beneficially owns 202,173 shares of common stock. The Form 4 was signed by an attorney-in-fact on September 22, 2025.
Edmond Cheng, Chief Financial Officer of GCT Semiconductor Holding, Inc. (GCTS), was granted 75,000 restricted stock units (RSUs) on 09/19/2025. The RSUs are a contingent right to receive common stock and carry a $0 grant price. They vest over four years in equal 25% installments on each anniversary of the grant, beginning 09/19/2026, subject to continued service. After this transaction the reporting person beneficially owns 151,000 shares (directly). The filing documents the standard Section 16 disclosure of an executive equity award and shows the company’s use of time‑based RSUs for retention.
Edmond Cheng, Chief Financial Officer of GCT Semiconductor Holding, Inc. (GCTS), was granted 75,000 restricted stock units (RSUs) on 09/19/2025. The RSUs are a contingent right to receive common stock and carry a $0 grant price. They vest over four years in equal 25% installments on each anniversary of the grant, beginning 09/19/2026, subject to continued service. After this transaction the reporting person beneficially owns 151,000 shares (directly). The filing documents the standard Section 16 disclosure of an executive equity award and shows the company’s use of time‑based RSUs for retention.
Alex Sum, Sr. VP of Sales and Marketing at GCT Semiconductor Holding, Inc. (GCTS), was granted 75,000 restricted stock units (RSUs) on 09/19/2025. The RSUs carry a $0 grant price and represent a contingent right to one share of common stock each. They vest in four equal annual installments (25% each) beginning on 09/19/2026, subject to continued service. After the grant, the reporting person beneficially owned 183,743 shares. The Form 4 was signed by an attorney-in-fact on 09/22/2025.
Alex Sum, Sr. VP of Sales and Marketing at GCT Semiconductor Holding, Inc. (GCTS), was granted 75,000 restricted stock units (RSUs) on 09/19/2025. The RSUs carry a $0 grant price and represent a contingent right to one share of common stock each. They vest in four equal annual installments (25% each) beginning on 09/19/2026, subject to continued service. After the grant, the reporting person beneficially owned 183,743 shares. The Form 4 was signed by an attorney-in-fact on 09/22/2025.