![Alex Sum](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Alex Sum
Sales & Marketing at
GCT Semiconductor, Inc.
Net worth: 619 214 $ as of 2026-05-30
Profile
Alex Sum currently works at GCT Semiconductor, Inc. as Vice President-Sales & Marketing since 2011.
Mr. Sum also holds the position of Head-Sales & Marketing at GCT Semiconductor, Inc. (South Korea) since 2002 and serves as Senior Vice President-Sales & Marketing at GCT Semiconductor Holding, Inc. Formerly, Mr. Sum worked at Siliconix, Inc. as Test & Wafer Fab Processing Engineering Supervisor in 1997.
From 1983 to 1992, Mr. Sum was Product & Test Engineering Supervisor at Supertex, Inc. Between 1977 and 1983, Mr. Sum held the role of Product & Test Engineering Supervisor at Fairchild Semiconductor International LLC.
From 1992 to 2002, Mr. Sum was Manager-Product Marketing at NXP Semiconductors Netherlands BV.
Education includes undergraduate studies at San Jose State University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
0.22% | 2025-09-18 | 183,743 ( 0.22% ) | 619 214 $ | 2026-05-30 |
Alex Sum active positions
| Companies | Position | Start |
|---|---|---|
GCT Semiconductor, Inc.
 GCT Semiconductor, Inc. SemiconductorsElectronic Technology Designs and supplies 5G and advanced LTE solutions | Sales & Marketing | 2002-04-30 |
GCT Semiconductor, Inc. (South Korea)
 GCT Semiconductor, Inc. (South Korea) SemiconductorsElectronic Technology Manufactures semiconductors | Sales & Marketing | 2001-12-31 |
Former positions of Alex Sum
| Companies | Position | End |
|---|---|---|
Philips Semiconductors BV
 Philips Semiconductors BV Electrical ProductsProducer Manufacturing Manufactures and trades electrical, electronic, mechanical and other components | Sales & Marketing | 2002-04-30 |
Siliconix, Inc.
 Siliconix, Inc. SemiconductorsElectronic Technology Manufactures semiconductor and switches | Corporate Officer/Principal | 1997-08-31 |
| SUPERTEX, INC. | Corporate Officer/Principal | 1991-12-31 |
| FAIRCHILD SEMICONDUCTOR INTL INC | Corporate Officer/Principal | - |
Training of Alex Sum
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
36
1st degree connections
7
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 7 |
|---|---|
Siliconix, Inc.
Siliconix, Inc. SemiconductorsElectronic Technology Manufactures semiconductor and switches | Electronic Technology |
Supertex, Inc.
 Supertex, Inc. SemiconductorsElectronic Technology Produces high voltage analog and mixed signal semiconductor components | Electronic Technology |
Fairchild Semiconductor International LLC
 Fairchild Semiconductor International LLC SemiconductorsElectronic Technology Manufactures semiconductors and related devices | Electronic Technology |
Philips Semiconductors BV
Philips Semiconductors BV Electrical ProductsProducer Manufacturing Manufactures and trades electrical, electronic, mechanical and other components | Producer Manufacturing |
San Jose State University
 San Jose State University 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 |
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