GCT Semiconductor Holding, Inc. (GCTS)
NYSE: GCTS · Real-Time Price · USD
1.290
0.00 (0.00%)
At close: Apr 28, 2026, 4:00 PM EDT
1.310
+0.020 (1.55%)
After-hours: Apr 28, 2026, 7:32 PM EDT

Company Description

GCT Semiconductor Holding, Inc., a fabless semiconductor company, designs, manufactures, and sells communication semiconductors for industrial, business-to-business, and consumer applications in the United States, Taiwan, China, Germany, and South Korea.

The company offers wireless communication technologies, such as 5G/5.75G/4.5G/4G transceivers and modems; RF and modem chipsets based on fourth-generation (4G) long term evolution (LTE) technology, including 4G LTE, 4.5G LTE Advanced, and 4.75G LTE Advanced-Pro; baseband modem solutions, RF transceivers, and system-on-chip (SoC) solutions; and product design and support, warranty development, customer support, and technical support services.

It also develops and sells cellular Internet of Things (IoT) chipsets for low-speed mobile networks, such as eMTC/NB-IOT/Sigfox, and other network protocols; and 5G NR chipsets and other 5G NR solutions.

The company’s products and solutions are used in portable wireless routers, indoor and outdoor fixed wireless routers, industrial machine-to-machine applications, smartphones, fixed wireless subscriber terminals, various communication modules and devices, and industrial products.

It sells its products directly or indirectly through distributors to wireless operators, original equipment manufacturers (OEMs), and original design manufacturers (ODMs) in Taiwan, China, Korea, Japan, Europe, North America, and South America.

GCT Semiconductor Holding, Inc. was founded in 1998 and is headquartered in San Jose, California.

GCT Semiconductor Holding, Inc.
GCT Semiconductor Holding logo
Country United States
Founded 1998
Industry Semiconductors
Sector Technology
Employees 121
CEO John Schlaefer

Contact Details

Address:
2290 North 1st Street, Suite 201
San Jose, California 95131
United States
Phone 408 434 6040
Website gctsemi.com

Stock Details

Ticker Symbol GCTS
Exchange NYSE
Stock Type Common Stock
Fiscal Year January - December
Reporting Currency USD
CIK Code 0001851961
CUSIP Number 36170N107
ISIN Number US36170N1072
Employer ID 86-2171699
SIC Code 3674

Key Executives

Name Position
John Brian Schlaefer President, Chief Executive Officer and Director
Dr. Kyeongho Lee Ph.D. Co-Founder and Independent Chairman
Fong Ting Cheng Chief Financial Officer
Alex Sum Senior Vice President of Sales and Marketing
Dr. Jeongmin Kim Ph.D. Chief Technology Officer and Vice President of Engineering

Latest SEC Filings

Date Type Title
Mar 30, 2026 424B5 Filing
Mar 25, 2026 10-K Annual Report
Mar 25, 2026 8-K Current Report
Mar 2, 2026 424B5 Filing
Feb 25, 2026 8-K Current Report
Feb 13, 2026 SCHEDULE 13G/A Filing
Jan 29, 2026 8-K Current Report
Dec 15, 2025 424B5 Filing
Dec 15, 2025 8-K Current Report
Nov 12, 2025 8-K Current Report