---
schema_version: "secwatch.filing_event.v1"
accession: "0000929638-26-000748"
form_type: "8-K"
ticker: "GCTS"
cik: "0001851961"
company_name: "GCT Semiconductor Holding, Inc."
filed_at: "2026-02-25T23:59:59+00:00"
generated_at: "2026-05-16T00:27:14.725371+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# GCT Semiconductor extends note maturity to 2028, issues warrant to Gogo for 500k shares at $2.50

## Summary
- Maturity of convertible note extended from 2026 to February 26, 2028.
- Conversion price amended to $10.00 per share of parent common stock.
- Gogo Business Aviation LLC receives warrant for 500,000 shares at $2.50, 3-year term.
- Warrant issued in consideration for entering into the note amendment.

## SEC filing metadata
- accession: 0000929638-26-000748
- form_type: 8-K
- ticker: GCTS
- cik: 0001851961
- company_name: GCT Semiconductor Holding, Inc.
- filed_at: 2026-02-25T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1851961/000092963826000748/0000929638-26-000748-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1851961/000092963826000748/form8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000929638-26-000748
- JSON: https://secwatch.observer/filing/0000929638-26-000748.json
- Plain text: https://secwatch.observer/filing/0000929638-26-000748.txt

## Key facts
- Material Agreements
  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).
  - Action: amendment
  - Agreement: notes offering
  - Counterparty: strategic investor (the Holder)
  - Value: Amendment to Convertible Promissory Note extending maturity to February 26, 2028
  - Effective: 2026-02-24
  source text: 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”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1851961/000092963826000748/0000929638-26-000748-index.htm
- Material Agreements
  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).
  - Action: entry
  - Agreement: equity purchase
  - Counterparty: strategic investor (the Holder)
  - Value: Warrant to purchase 500,000 shares at $2.50 per share, term of 3 years
  - Effective: 2026-02-24
  source text: 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.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1851961/000092963826000748/0000929638-26-000748-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.