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ERNEST E MADDOCK

CIK 1227050 · SVP & Chief Financial Officer · last filed 2026-06-22

ERNEST E MADDOCK is a SVP & Chief Financial Officer who has filed 92 SEC Form 4 insider transactions across 9 companies since 2008. The most recent filing, for OUST.WS.A, was dated Jun 22, 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 $221.8M 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.

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Disclosed Exposure

$221.78M

Companies

9

Total Filings

92

Lifetime Open-Market Net

-$1.62M

Filer Profile

Reported Address
C/O TERADYNE INC.
600 RIVERPARK DRIVE
NORTH READING, MA 01864
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
Ouster, Inc. (OUST.WS.A) Delisted Director 88,902 $0.03 $2.6K $141.5K 6 2026-06-22
AVT Director 5,265 $92.06 $484.7K $0 20 2026-06-22
TER Director 10,267 $357.03 $3.67M $94.1K 15 2026-06-16
UCTT Director 58,816 $72.43 $4.26M $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 $1016.59 $213.37M $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 $307.65 $0 -$2.60M 13 2013-03-06

Recent Filings

92 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
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
2025-12-19 TER Other (J) +2 $0 EDGAR
2025-12-18 AVT Grant (A) — $0 EDGAR
Showing 1–10 of 92
Page 1 of 10
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
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.