Ernest E Maddock
CIK 1227050 · SVP & Chief Financial Officer · last filed 2026-09-28
Ernest E Maddock is a SVP & Chief Financial Officer who has filed 94 SEC Form 4 insider transactions across 9 companies since 2008. The most recent filing, for TER, was dated Sep 28, 2026. Across all open-market trades the lifetime net is −$1.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $195.0M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
LRCX price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
600 RIVERPARK DRIVE
NORTH READING, MA 01864
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TER | Director | 10,269 | $317.61 | $3.26M | $94.1K | 16 | 2026-09-28 |
| AVT | Director | 5,265 | $87.90 | $462.8K | $0 | 21 | 2026-09-25 |
| Ouster, Inc. (OUST.WS.A) Delisted | Director | 88,902 | $0.03 | $2.6K | $141.5K | 6 | 2026-06-22 |
| UCTT | Director | 58,816 | $45.81 | $2.69M | $256.3K | 11 | 2026-05-27 |
| Ouster, Inc. (OUSTZ) Delisted | Director | 84,177 | $0.00 | $168 | $0 | 1 | 2025-06-20 |
| Velodyne Lidar, Inc. (VLDRW) Delisted | Director | 162,126 | $0.32 | $51.9K | $49.9K | 5 | 2023-02-13 |
| MU | SVP & Chief Financial Officer | 209,887 | $898.72 | $188.63M | $432.5K | 14 | 2017-10-26 |
| Riverbed Technology, Inc. (RVBD) Delisted | Chief Financial Officer | 148,294 | — | — | $0 | 3 | 2015-02-04 |
| LRCX | Chief Financial Officer | 0 | $238.19 | $0 | -$2.60M | 13 | 2013-03-06 |
Recent Filings
94 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-09-28 | TER | Other (J) | +2 | $0 | EDGAR |
| 2026-09-25 | AVT | Grant (A) | — | $0 | EDGAR |
| 2026-06-22 | Ouster, Inc. (OUST.WS.A) Delisted | Grant (A) | +4,725 | $0 | EDGAR |
| 2026-06-22 | AVT | Grant (A) | — | $0 | EDGAR |
| 2026-06-16 | TER | Other (J) | +2 | $0 | EDGAR |
| 2026-05-27 | UCTT | Grant (A) | +2,575 | $0 | EDGAR |
| 2026-05-12 | TER | Grant (A) | +668 | $0 | EDGAR |
| 2026-03-19 | AVT | Grant (A) | — | $0 | EDGAR |
| 2026-03-17 | TER | Other (J) | +2 | $0 | EDGAR |
| 2026-01-05 | AVT | Grant (A) | — | $0 | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.