Ernest E Maddock - Net Worth and Insider Trading

Ernest E Maddock Net Worth

The estimated net worth of Ernest E Maddock is at least $72 Million dollars as of 2024-11-09. Ernest E Maddock is the CFO of Lam Research Corp and owns about 627,770 shares of Lam Research Corp (LRCX) stock worth over $49 Million. Ernest E Maddock is the SVP & CFO of Micron Technology Inc and owns about 192,385 shares of Micron Technology Inc (MU) stock worth over $22 Million. Ernest E Maddock is also the Director of Ouster Inc and owns about 69,119 shares of Ouster Inc (OUST) stock worth over $552,261. Besides these, Ernest E Maddock also holds Teradyne Inc (TER) , Ultra Clean Holdings Inc (UCTT) , Velodyne Lidar Inc (VLDR) . Details can be seen in Ernest E Maddock's Latest Holdings Summary section.

Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that Ernest E Maddock has not made any transactions after 2024-08-16 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

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Transaction Summary of Ernest E Maddock

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Ernest E Maddock Insider Ownership Reports

Based on ownership reports from SEC filings, as the reporting owner, Ernest E Maddock owns 8 companies in total, including Ultra Clean Holdings Inc (UCTT) , Micron Technology Inc (MU) , and Intersil Corp (ISIL) among others .

Click here to see the complete history of Ernest E Maddock’s form 4 insider trades.

Insider Ownership Summary of Ernest E Maddock

Ticker Comapny Transaction Date Type of Owner
UCTT Ultra Clean Holdings Inc 2018-07-31 director
MU Micron Technology Inc 2017-08-11 CFO & VP & Finance
ISIL Intersil Corp 2017-02-24 director
LIMIT LIMIT 2013-02-05 Vice President
LIMIT LIMIT 2021-08-25 director
LIMIT LIMIT 2022-03-07 director
LIMIT LIMIT 2024-02-01 director
LIMIT LIMIT 2024-08-16 director

Ernest E Maddock Latest Holdings Summary

Ernest E Maddock currently owns a total of 6 stocks. Among these stocks, Ernest E Maddock owns 627,770 shares of Lam Research Corp (LRCX) as of February 5, 2013, with a value of $49 Million and a weighting of 68.21%. Ernest E Maddock owns 192,385 shares of Micron Technology Inc (MU) as of August 11, 2017, with a value of $22 Million and a weighting of 29.92%. Ernest E Maddock also owns 69,119 shares of Ouster Inc (OUST) as of August 16, 2024, with a value of $552,261 and a weighting of 0.77%. The other 3 stocks Teradyne Inc (TER) , Ultra Clean Holdings Inc (UCTT) , Velodyne Lidar Inc (VLDR) have a combined weighting of 1.1% among all his current holdings.

Latest Holdings of Ernest E Maddock

Ticker Comapny Latest Transaction Date Shares Owned Current Price ($) Current Value ($)
LRCX Lam Research Corp 2013-02-05 627,770 78.20 49,091,614
MU Micron Technology Inc 2017-08-11 192,385 111.94 21,535,577
OUST Ouster Inc 2024-08-16 69,119 7.99 552,261
TER Teradyne Inc 2024-02-01 4,728 110.89 524,288
UCTT Ultra Clean Holdings Inc 2018-07-31 6,430 38.12 245,112
VLDR Velodyne Lidar Inc 2022-03-07 20,000 1.26 25,200

Holding Weightings of Ernest E Maddock


Ernest E Maddock Form 4 Trading Tracker

According to the SEC Form 4 filings, Ernest E Maddock has made a total of 0 transactions in Lam Research Corp (LRCX) over the past 5 years. The most-recent trade in Lam Research Corp is the sale of 120,300 shares on February 5, 2013, which brought Ernest E Maddock around $508,628.

According to the SEC Form 4 filings, Ernest E Maddock has made a total of 0 transactions in Micron Technology Inc (MU) over the past 5 years. The most-recent trade in Micron Technology Inc is the acquisition of 3,400 shares on August 11, 2017, which cost Ernest E Maddock around $94,826.

According to the SEC Form 4 filings, Ernest E Maddock has made a total of 3 transactions in Ouster Inc (OUST) over the past 5 years, including 3 buys and 0 sells. The most-recent trade in Ouster Inc is the acquisition of 8,000 shares on August 16, 2024, which cost Ernest E Maddock around $62,320.

More details on Ernest E Maddock's insider transactions can be found in the Insider Trading History of Ernest E Maddock table.

Insider Trading History of Ernest E Maddock

No transactions are available. GuruFocus only tracks and displays the purchase and sale of non-derivative security in open market or private transactions from SEC filings with the transaction code of P or S.
Total 0
  • 1
Only the transactions in Open Market or Private Sale at the market prices are included. Other transactions such as conversion of derivative security or exercise of options are not included. Insiders are limited to only officers and/or directors of the company.

Ernest E Maddock Trading Performance

GuruFocus tracks the stock performance after each of Ernest E Maddock's buying transactions within different timeframes. To be detailed, the average return of stocks after 3 months bought by Ernest E Maddock is 0.33%. GuruFocus also compares Ernest E Maddock's trading performance to market benchmark return within the same time period. The performance of stocks bought by Ernest E Maddock within 3 months outperforms 4 times out of 9 transactions in total compared to the return of S&P 500 within the same period.

You can select different timeframes to see how Ernest E Maddock's insider trading performs compared to the benchmark.

Please note GuruFocus will not track the insiders’ transaction performance if he/she does not have buying transactions.

Performance of Ernest E Maddock

Average Return

LIMIT
Average return per transaction

Outperforming Transactions

LIMIT
6 out of 7 outperforming transactions.
Each transaction is measured over a period and compared to .
1 Month 3 Months 6 Months 1 Year 2 Years 3 Years
Return(%) 2.39 LIMIT LIMIT LIMIT LIMIT LIMIT
Relative Return to S&P 500(%) 0.61 LIMIT LIMIT LIMIT LIMIT LIMIT

Ernest E Maddock Ownership Network

Ownership Network List of Ernest E Maddock

No Data

Ownership Network Relation of Ernest E Maddock

Insider Network Chart

Ernest E Maddock Owned Company Details

What does Ultra Clean Holdings Inc do?

Who are the key executives at Ultra Clean Holdings Inc?

Ernest E Maddock is the director of Ultra Clean Holdings Inc. Other key executives at Ultra Clean Holdings Inc include SVP & Finance & CAO Sheri Brumm , director & CEO James P Scholhamer , and General Counsel and Secretary Paul Yoonku Cho .

Ultra Clean Holdings Inc (UCTT) Insider Trades Summary

Over the past 18 months, Ernest E Maddock made no insider transaction in Ultra Clean Holdings Inc (UCTT). Other recent insider transactions involving Ultra Clean Holdings Inc (UCTT) include a net sale of 41,125 shares made by Sheri Brumm , a net sale of 8,314 shares made by Paul Yoonku Cho , and a net sale of 13,866 shares made by Jeffrey L. Mckibben .

In summary, during the past 3 months, insiders sold 0 shares of Ultra Clean Holdings Inc (UCTT) in total and bought 2,500 shares, with a net purchase of 2,500 shares. During the past 18 months, 150,618 shares of Ultra Clean Holdings Inc (UCTT) were sold and 2,500 shares were bought by its insiders, resulting in a net sale of 148,118 shares.

Ultra Clean Holdings Inc (UCTT)'s detailed insider trading history can be found in Insider Trading Tracker table.

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Ultra Clean Holdings Inc Insider Transactions

No Available Data

Ernest E Maddock Mailing Address

Above is the net worth, insider trading, and ownership report for Ernest E Maddock. You might contact Ernest E Maddock via mailing address: Lam Research, 4650 Cushing Parkway, Fremont Ca 94538.