Ernest E Maddock
Ernest E Maddock's open-market purchases and sales year by year since 2006, and every transaction reported to the SEC on Form 4: date, shares, price and a…
Insider buying and selling since 2010
Ernest E Maddock bought shares on the open market in 7 different years since 2010 across 5 companies. Sales in 3 of the 17 years since 2010.
Ernest E Maddock reported 10 open-market purchases and 7 sales since 2010; purchases in 7 different years, most recently 2025.
| Year | Bought | Sold |
|---|---|---|
| 2025 | 1×1 trade | — |
| 2024 | 2×2 trades | — |
| 2023 | 2×2 trades | — |
| 2018 | 1×1 trade | — |
| 2017 | 1×1 trade | — |
| 2016 | 1×1 trade | — |
| 2015 | 2×2 trades | — |
| 2013 | — | 5×5 trades |
| 2011 | — | 1×1 trade |
| 2010 | — | 1×1 trade |
Insider at 5 companies
- Ultra Clean Holdings, Inc. UCTT2018–2025 · 2 purchases, 0 sales
- Ouster OUST2023–2024 · 3 purchases, 0 sales
- Teradyne TER2024 · 1 purchase, 0 sales
- Micron MU2015–2017 · 4 purchases, 0 sales
- Lam Research LRCX2010–2013 · 0 purchases, 7 sales
Open-market purchases (code P) and sales (code S) on Forms 4 and 5. Up to Sep 2024 from the SEC's Insider Transactions Data Sets; since Oct 2024 from each filing as it is published. A trade filed twice (an amendment) counts once. The amounts, the people and every filing are in OQRO Pro.
Trades disclosed
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Every trade this person has disclosed
Newest first, each one linked to the filing it came from.
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What this page holds
- Every disclosed trade, newest first
- How purchases did after they were reported
- Companies and committees involved
- A link to every official filing
What OQRO is
OQRO reads the public record for US-listed companies — insider trades filed with the SEC, stock trades disclosed by members of Congress, fund holdings from 13F filings, and federal contract awards — and puts each one in plain words next to the filing it came from. It describes what was disclosed. It does not give investment advice or tell you what to buy.
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Questions about Ernest E Maddock's trades
Has Ernest E Maddock bought shares on the open market?
Ernest E Maddock bought shares on the open market in 7 different years since 2010 across 5 companies. Sales in 3 of the 17 years since 2010.
When did Ernest E Maddock last buy or sell shares?
In SEC filings since 2010: the latest open-market purchase is from 2025; the latest open-market sale is from 2013.
Which companies has Ernest E Maddock traded as an insider?
5 companies: Ultra Clean Holdings, Inc. (UCTT, 2018–2025), Ouster (OUST, 2023–2024), Teradyne (TER, 2024), Micron (MU, 2015–2017), Lam Research (LRCX, 2010–2013).