Yeung William

Chief Legal Officer

Yeung William has filed 10 SEC Form 4 filings (27 transaction rows) across 1 company, with disclosures dating back to 2025. 10 of those filings fall inside the rolling window. Most recent filing: Jul 29, 2026.

On the most recent filing, Yeung William is listed as Chief Legal Officer at Energy Recovery, Inc. Inside the rolling window, Yeung William reported no open-market purchases and 12 open-market sales totaling $1.3M in ERII. The largest disclosed transaction in the window is a sale of 33,554 ERII shares on Sep 11, 2025, worth $487K.

Companies traded

Other insiders at ERII

Insider Buying

$0

reported purchases (SEC code P)

Insider Selling

$1.3M

reported sales (SEC code S)

Companies

1

in the rolling window

Source
ERIISale$18KJul 29SEC ↗
ERIISale$13KFeb 9SEC ↗
ERIISale$10KFeb 9SEC ↗
ERIISale$106KFeb 3SEC ↗
ERIISale$11KFeb 3SEC ↗
ERIISale$62KOct 27SEC ↗
ERIISale$165KOct 27SEC ↗
ERIISale$60KOct 22SEC ↗
ERIISale$58KOct 17SEC ↗
ERIISale$57KOct 7SEC ↗
ERIISale$233KSep 22SEC ↗
ERIISale$487KSep 15SEC ↗
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Frequently asked questions

How many SEC Form 4 filings has Yeung William made?

Yeung William has filed 10 SEC Form 4 filings (27 transaction rows) across 1 company since 2025.

Which companies does Yeung William trade?

Yeung William has filed SEC Form 4 disclosures for 1 company, including ERII.

When was Yeung William's most recent SEC Form 4 filing?

Yeung William's most recent SEC Form 4 filing on Tracefour is dated Jul 29, 2026.

What is Yeung William's job title?

On the most recent SEC Form 4 filings tracked by Tracefour, Yeung William is listed as Chief Legal Officer.

What is Yeung William's total buy and sell value in the current window?

Inside the rolling retention window, Yeung William bought $0 and sold $1.3M based on SEC Form 4 filings.

What was Yeung William's largest disclosed transaction?

The largest disclosed transaction in the current window is a sale of 33,554 ERII shares on 2025-09-11, worth $487K, per SEC Form 4 filings.