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Ernest Maddock Insider Profile

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Ernest Maddock, Director at Ouster, holds 88.90K shares in Ouster (Ticker: OUST), holds 10.27K shares in Teradyne (Ticker: TER), holds 58.82K shares in Ultra Clean Holdings (Ticker: UCTT).
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Ernest Maddock

Ernest Maddock
Ouster (OUST)
Director

Ranked #1,387 out of 108,921 Corporate Insiders

Profitable Transactions

82%
9 out of 11 Profitable Transactions

Average Return

+66.60%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$225M
94.82%
1.89%
1.63%
1.44%
0.22% Others
A breakdown of Ernest Maddock's holdings
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Insider Roles

Micron
(MU)
SVP & CFO
Ultra Clean Holdings
(UCTT)
Director
Teradyne
(TER)
Director
Ouster
(OUST)
Director
+2 other positions
Roles that Ernest Maddock holds in companies
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Most Profitable Insider Trade

Stock:
Ouster
(OUST)
Rating:Informative Buy
Date:Aug 19, 2024 - Aug 19, 2025
Return:+280.80%
The most profitable trade made by Ernest Maddock
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Ernest Maddock's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
OUST
Ouster
Jun 22, 2026
Director
Uninformative Buy
―
$3.24M
MU
Micron
Oct 26, 2017
SVP & CFO
Uninformative Buy
―
$213.37M
UCTT
Ultra Clean Holdings
May 27, 2026
Director
Uninformative Buy
―
$4.26M
AVT
Avnet
Jan 04, 2022
Director
Uninformative Buy
―
$484.70K
VLDR
Velodyne Lidar
Jun 21, 2022
―
Uninformative Buy
―
$0.00
TER
Teradyne
Jun 16, 2026
Director
Uninformative Buy
―
$3.67M
RVBD
Riverbed Technology
Apr 28, 2015
―
Uninformative Sell
―
―
ISIL
Intersil Corp
Feb 28, 2017
―
Uninformative Sell
―
$0.00
LRCX
Lam Research
Mar 06, 2013
CFO
Uninformative Sell
293.45K
$0.00
List of latest transactions for each holding click on a transaction to see Ernest Maddock's performance on stock
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Ernest Maddock insider profile FAQ

What is the percentage of profitable transactions made by Ernest Maddock?
The percentage of profitable transactions made by Ernest Maddock is 82%.
    What is the average return per transaction made by Ernest Maddock?
    The average return per transaction made by Ernest Maddock is 66.60%.
      What stocks does Ernest Maddock hold?
      Ernest Maddock holds: OUST, MU, UCTT, AVT, VLDR, TER, RVBD, ISIL, LRCX stocks.
        What was Ernest Maddock’s latest transaction?
        Ernest Maddock latest transaction was an Uninformative Buy of ―.
          What was Ernest Maddock's most profitable transaction?
          Ernest Maddock’s most profitable transaction was an Informative Buy of OUST stock on August 19, 2024. The return on the trade was 280.80%.
            What is Ernest Maddock's role in Ouster?
            Ernest Maddock's role in Ouster is Director.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.