Chue-San Yoo Biography and Net Worth

Vice President, Research & Development / Specialty of Taiwan Semiconductor Manufacturing

Dr. C.S. Yoo is Vice President of Specialty at Taiwan Semiconductor Manufacturing Co. Ltd. (TSMC), responsible for strategic planning, project management, and customer services of TSMC’s strategic customer program. Prior to this post, Dr. Yoo was Senior Director of TSMC’s Office of Strategy Customer Program in May of 2019. Since joining TSMC in 1988, Dr. Yoo has served in a variety of manufacturing and research & development positions in the Company. From 1991 to 1995, Dr. Yoo was an SRAM program manager, successfully developing and delivering 0.65um, 0.55um, 0.5um, 0.45um, and 0.35um technologies while introducing the triple poly technology to 0.35um to significantly increase the number of gross die per wafer. Dr. Yoo was then promoted to be Deputy Director of the SRAM/DRAM and embedded DRAM Program. In 1996, Dr. Yoo delivered 0.35um DRAM into production. In 1997 he joined the E-Beam Operation (EBO) Division and successfully led the team to deliver masks for key technologies from 0.18um to 5nm. In 2016, he developed customized robots and an auto-particle inspection system to enhance automation.

With more than three decades of practical experience in semiconductor operations management, Dr. Yoo received the “National Manager Excellence Award” in 2008, recognizing his achievement in developing the world’s most advanced mask technology. In 2017, Dr. Yoo led the EBO team to successfully deliver EUV reticles and pellicles, helping TSMC to introduce EUV into production.

In 1979, Dr. Yoo graduated with a degree in Chemical Engineering from the National Taipei Institute of Technology (Now the National Taipei University of Technology), and was certified as a professional chemical engineer in the same year. Dr. Yoo then received an M.S. degree and Ph.D. in Chemical Engineering from the Worcester Polytechnic Institute, U.S.A.

What is Chue-San Yoo's net worth?: The estimated net worth of Chue-San Yoo is at least $3.07 million as of October 7th, 2026. Dr. Yoo owns 6,744 shares of Taiwan Semiconductor Manufacturing stock worth more than $3,069,572 as of October 8th. This net worth evaluation does not reflect any other assets that Dr. Yoo may own. Learn More about Chue-San Yoo's net worth.
How do I contact Chue-San Yoo?: The corporate mailing address for Dr. Yoo and other Taiwan Semiconductor Manufacturing executives is Hsinchu Science Park, Hsinchu City, TPE, 300096. Taiwan Semiconductor Manufacturing can also be reached via phone at (863) 563-6688 and via email at [email protected]. Learn More on Chue-San Yoo's contact information.
Has Chue-San Yoo been buying or selling shares of Taiwan Semiconductor Manufacturing?: In the last ninety days, Chue-San Yoo has bought $3,969.50 in shares of Taiwan Semiconductor Manufacturing stock. Most recently, on Wednesday, October 7th, Chue-San Yoo bought 50 shares of Taiwan Semiconductor Manufacturing stock. The stock was acquired at an average cost of $79.39 per share, with a total value of $3,969.50. Following the completion of the transaction, the vice president now directly owns 6,744 shares of the company's stock, valued at $535,406.16. Learn More on Chue-San Yoo's trading history.
Who are Taiwan Semiconductor Manufacturing's active insiders?: Taiwan Semiconductor Manufacturing's insider roster includes Min Cao (Vice President, Research & Development / Pathfinding and Corporate Research / Chief Technology Offic), Richard Cassidy (Sr. VP of Corp. Strategy Office and CEO & Pres of TSMC AZ), Pei-Hung Chen (Vice President, Human Resources), Tzu-Sou Chuang (VP), Jun He (VP of Advanced Packaging Technology and Service), Yung-Chin Hou (Senior Vice President and Deputy Co-COO / Chief Information Security Officer), Kuo-Chin Hsu (Vice President, Advanced Packaging Technology Development), Jen-Chau Huang ( Chief Financial Officer and Spokesperson ), Jen-Chau Huang (VP & CFO), Yuan-Ko Hwang (VP, Materials Management), Syun-Ming Jang (VP), Yao-Ching Ku (Vice President, Research & Development / Nano Patterning Technology Development), Yung-Haw Liaw (VP), Chris Lin (Vice President and Chief Information Officer), Lee-Chung Lu (VP), Yuh-Jier Mii (COO), Bor-Zen Tien (VP), Ying-Lang Wang (Senior Vice President, Operations), C. Wei (Vice Chairman & CEO), Che-Chia Wei (Chairman and Chief Executive Officer), Yi-Huang Wu (VP of Quality and Reliability), Chue-San Yoo (Vice President, Research & Development / Specialty), Lipen Yuan (Vice President, Business Development), and Kevin Zhang (Senior Vice President, Business Development and Global Sales, and Deputy Co-COO). Learn More on Taiwan Semiconductor Manufacturing's active insiders.
Are insiders buying or selling shares of Taiwan Semiconductor Manufacturing?: During the last year, Taiwan Semiconductor Manufacturing insiders bought shares 137 times. They purchased a total of 26,086 shares worth more than $1,918,953.87. During the last year, insiders at the semiconductor company sold shares 1 times. They sold a total of 200,000 shares worth more than $13,966,000.00. The most recent insider tranaction occured on October, 7th when SVP Choh Fei Yeap bought 52 shares worth more than $4,128.28. Insiders at Taiwan Semiconductor Manufacturing own 1.1% of the company. Learn More about insider trades at Taiwan Semiconductor Manufacturing.
Information on this page was last updated on 10/7/2026.

Chue-San Yoo Insider Trading History at Taiwan Semiconductor Manufacturing

Transaction Date	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
10/7/2026	Buy	50	$79.39	$3,969.50	6,744
9/7/2026	Buy	53	$76.20	$4,038.60	6,694
8/7/2026	Buy	51	$73.31	$3,738.81	6,641
7/7/2026	Buy	51	$76.62	$3,907.62	6,590

Chue-San Yoo Buying and Selling Activity at Taiwan Semiconductor Manufacturing

Taiwan Semiconductor Manufacturing Company Overview

Taiwan Semiconductor Manufacturing Company Limited, together with its subsidiaries, manufactures, packages, tests, and sells integrated circuits and other semiconductor devices in Taiwan, China, Europe, the Middle East, Africa, Japan, the United States, and internationally. It provides a range of wafer fabrication processes, including processes to manufacture complementary metal- oxide-semiconductor (CMOS) logic, mixed-signal, radio frequency, embedded memory, bipolar CMOS mixed-signal, and others. The company also offers customer and engineering support services; manufactures masks; and invests in technology start-up companies; researches, designs, develops, manufactures, packages, tests, and sells color filters; and provides investment services. Its products are used in high performance computing, smartphones, Internet of things, automotive, and digital consumer electronics. The company was incorporated in 1987 and is headquartered in Hsinchu City, Taiwan.

Today's Range

Now: $455.91

$452.88

$471.19

50 Day Range

MA: $431.08

$404.18

$486.04

2 Week Range

Now: $455.91

$266.82

$487.47

Volume

8,470,236 shs

Average Volume

13,058,815 shs

Market Capitalization

$2.36 trillion

P/E Ratio

32.89

Dividend Yield

0.72%

Beta

1.37