John Schlaefer

Chief Executive Officer at

GCT Semiconductor, Inc.

Net worth: 683 193 $ as of 2026-05-30

62 year

74 connections

Electronic Technology

Consumer Services

Producer Manufacturing

Profile

John B. Schlaefer is Chief Executive Officer & Director at GCT Semiconductor, Inc. since 2013.
He is President, Chief Executive Officer & Director at GCT Semiconductor Holding, Inc. He is also Director at GCT Semiconductor, Inc. (South Korea) since 2013.
Formerly, Mr. Schlaefer was Director-Product Line at National Semiconductor Corp.
from 2001 to 2005.
He was Program Manager & Project Engineer at Watkins Johnson Co. from 1987 to 1993.
Education includes undergraduate and graduate degrees from Stanford University and an MBA from the University of California, Berkeley.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
0.24%	2025-09-25	202,728 ( 0.24% )	683 193 $	2026-05-30

John Schlaefer active positions

Companies	Position	Start
GCT Semiconductor, Inc. GCT Semiconductor, Inc. SemiconductorsElectronic Technology Designs and supplies 5G and advanced LTE solutions	Chief Executive Officer	2012-12-31
GCT Semiconductor, Inc. (South Korea) GCT Semiconductor, Inc. (South Korea) SemiconductorsElectronic Technology Manufactures semiconductors	Director/Board Member	2012-12-31

All active positions of John Schlaefer

Former positions of John Schlaefer

Companies	Position	End
National Semiconductor Corp. National Semiconductor Corp. SemiconductorsElectronic Technology Develops and manufactures analog intensive and mixed-signal integrated circuits	Corporate Officer/Principal	2004-12-31
Watkins Johnson Co. Watkins Johnson Co. Industrial MachineryProducer Manufacturing Designs and manufactures components and sub-assemblies for wireless personal communication applications	Corporate Officer/Principal	-

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Training of John Schlaefer

Experiences
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Private companies

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Linked companies

Private companies	6
National Semiconductor Corp. National Semiconductor Corp. SemiconductorsElectronic Technology Develops and manufactures analog intensive and mixed-signal integrated circuits	Electronic Technology
Stanford University Stanford University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Watkins Johnson Co. Watkins Johnson Co. Industrial MachineryProducer Manufacturing Designs and manufactures components and sub-assemblies for wireless personal communication applications	Producer Manufacturing
University of California, Berkeley University of California, Berkeley Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
GCT Semiconductor, Inc. GCT Semiconductor, Inc. SemiconductorsElectronic Technology Designs and supplies 5G and advanced LTE solutions	Electronic Technology
GCT Semiconductor, Inc. (South Korea) GCT Semiconductor, Inc. (South Korea) SemiconductorsElectronic Technology Manufactures semiconductors	Electronic Technology