Chris Siu Insider Profile
11 Followers
Chris Siu, Chief Accounting Officer & SVP at Ultra Clean Holdings, holds 75.98K shares in Aehr Test Systems (Ticker: AEHR), holds 40.11K shares in Ultra Clean Holdings (Ticker: UCTT). Most recently, Chris Siu Sold ― shares of Aehr Test Systems on May 15, 2026 for an estimated value of $221.61K.
Chris Siu Ultra Clean Holdings (UCTT)Chief Accounting Officer & SVP
Ultra Clean Holdings (UCTT)
Chief Accounting Officer & SVP
Ranked #56,845 out of 107,514 Corporate Insiders
Profitable Transactions
2 out of 3 Profitable Transactions
Average Return
-2.20%
Average return per transaction
Time Frame
Compare to
Insider Holdings
Insider Roles
Roles that Chris Siu holds in companies
Most Profitable Insider Trade
The most profitable trade made by Chris Siu
Chris Siu's Trading History
Ultra Clean Holdings
Jun 02, 2022
Chief Accounting Officer & SVP
Uninformative Buy
12.00K
$3.50M
Aehr Test Systems
May 15, 2026
CFO
Informative Sell
221.61K
$7.60M
List of latest transactions for each holding click on a transaction to see Chris Siu's performance on stock
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Chris Siu insider profile FAQ
What is the percentage of profitable transactions made by Chris Siu?
The percentage of profitable transactions made by Chris Siu is 67%.
What is the average return per transaction made by Chris Siu?
The average return per transaction made by Chris Siu is -2.20%.
What stocks does Chris Siu hold?
Chris Siu holds: UCTT, AEHR stocks.
What was Chris Siu’s latest transaction?
Chris Siu latest transaction was an Informative Sell of $221.61K.
What was Chris Siu's most profitable transaction?
Chris Siu’s most profitable transaction was an Informative Sell of AEHR stock on December 7, 2023. The return on the trade was 52.60%.
What is Chris Siu's role in Ultra Clean Holdings?
Chris Siu's role in Ultra Clean Holdings is Chief Accounting Officer & SVP.
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