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 | |||||||
|---|---|---|---|---|---|---|---|
| ERII | Chief Legal Officer | Sale | 2,048 | $18K | Jul 29 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 890 | $13K | Feb 9 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 646 | $10K | Feb 9 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 7,271 | $106K | Feb 3 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 729 | $11K | Feb 3 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 3,530 | $62K | Oct 27 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 9,168 | $165K | Oct 27 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 3,530 | $60K | Oct 22 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 3,530 | $58K | Oct 17 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 3,567 | $57K | Oct 7 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 15,454 | $233K | Sep 22 | SEC ↗ | |
| ERII | Chief Legal Officer | Sale | 33,554 | $487K | Sep 15 | SEC ↗ |
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.