Who
Ernest E. Maddock
Director
Company insider
Files Form 4 as: Director, Teradyne; Director, Avnet; Director, Ouster; Director, Ultra Clean Holdings; Director, Velodyne Lidar; SVP & Chief Financial Officer, Micron Technology; Director, Intersil Corp/de; Chief Financial Officer, Riverbed Technology.
In numbers
- Trades disclosed
- 149
- Buys
- 12
- Sells
- 4
- Bought
- $974K
- Sold
- $2.6M
- Companies
- 9
- Companies where not an officer
- 6
- First trade
- 1 May 2008
- Last trade
- 25 Sep 2026
- Last filed
- 28 Sep 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 25 Sep 2026filed 28 Sep 2026 | TER TeradyneSemiconductor Equipment | SEC FORM 4 Code J | —2 at $0.00 | filing |
| 25 Sep 2026filed 28 Sep 2026 | TER TeradyneSemiconductor Equipment | SEC FORM 4 Code J | —2 at $0.00 | filing |
| 23 Sep 2026filed 25 Sep 2026 | AVT Avnetoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | $6,61060 at $110.17 | filing |
| 23 Sep 2026filed 25 Sep 2026 | AVT Avnetoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | $6,61060 at $110.17 | filing |
| 17 Jun 2026filed 22 Jun 2026 | AVT Avnetoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | $5,63662 at $90.91 | filing |
| 17 Jun 2026filed 22 Jun 2026 | AVT Avnetoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | $5,63662 at $90.91 | filing |
| 17 Jun 2026filed 22 Jun 2026 | OUST OusterMachinery | SEC FORM 4 Code A | —4,725 at $0.00 | filing |
| 17 Jun 2026filed 22 Jun 2026 | OUST OusterMachinery | SEC FORM 4 Code A | —4,725 at $0.00 | filing |
| 12 Jun 2026filed 16 Jun 2026 | TER TeradyneSemiconductor Equipment | SEC FORM 4 Code J | —2 at $0.00 | filing |
| 12 Jun 2026filed 16 Jun 2026 | TER TeradyneSemiconductor Equipment | SEC FORM 4 Code J | —2 at $0.00 | filing |
| 22 May 2026filed 27 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code A | —2,575 at $0.00 | filing |
| 22 May 2026filed 27 May 2026 | UCTT Ultra Clean HoldingsSemiconductor Equipment | SEC FORM 4 Code A | —2,575 at $0.00 | filing |
| 8 May 2026filed 12 May 2026 | TER TeradyneSemiconductor Equipment | SEC FORM 4 Code A | —668 at $0.00 | filing |
| 8 May 2026filed 12 May 2026 | TER TeradyneSemiconductor Equipment | SEC FORM 4 Code A | —668 at $0.00 | filing |
| 18 Mar 2026filed 19 Mar 2026 | AVT Avnetoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | $5,63694 at $59.96 | filing |
| 18 Mar 2026filed 19 Mar 2026 | AVT Avnetoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | $5,63694 at $59.96 | filing |
| 13 Mar 2026filed 17 Mar 2026 | TER TeradyneSemiconductor Equipment | SEC FORM 4 Code J | —2 at $0.00 | filing |
| 13 Mar 2026filed 17 Mar 2026 | TER TeradyneSemiconductor Equipment | SEC FORM 4 Code J | —2 at $0.00 | filing |
| 2 Jan 2026filed 5 Jan 2026 | AVT Avnetoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | —4,078 at $0.00 | filing |
| 2 Jan 2026filed 5 Jan 2026 | AVT Avnetoption or derivative · Distributors & Wholesale | SEC FORM 4 Code A | —4,078 at $0.00 | filing |
News
Lam Research sees WFE topping US$200 billion in 2027LRCX · digitimes.com · 23 Oct 2026Ultra Clean (NASDAQ:UCTT) Shares Gap Down – Time to Sell?UCTT · themarketsdaily.com · 22 Oct 2026Lam Research Stock Falls 9%LRCX · rttnews.com · 22 Oct 2026Lam Research Sinks 9% as Supply Constraints Cap Outlook; Applied Materials Drops 6%, ASML Holding Falls 4%LRCX · aol.com · 22 Oct 202624,576 Micron Technology, Inc. $MU Shares Sold by Pinnacle Associates Ltd.MU · dailypolitical.com · 22 Oct 2026Teradyne, Inc. $TER Stock: Lmcg Investments LLC Trims HoldingsTER · dailypolitical.com · 22 Oct 20261,941 Micron Technology, Inc. $MU Shares Sold by Nisa Investment Advisors LLCMU · dailypolitical.com · 22 Oct 2026Baystreet.ca - Ouster Darts Higher on New VehiclesOUST · baystreet.ca · 21 Oct 2026
0 headlines in the last 90 days name Ernest E. Maddock; 12 articles from the last 14 days about the 5 companies they traded most, at most three about any one of them.