Who
William Yeung
Chief Legal Officer
Company insider
Files Form 4 as: Chief Legal Officer, Energy Recovery.
In numbers
- Trades disclosed
- 97
- Buys
- 2
- Sells
- 24
- Bought
- $73K
- Sold
- $2.8M
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 8 Nov 2016
- Last trade
- 28 Jul 2026
- Last filed
- 29 Jul 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 | |
|---|---|---|---|---|
| 28 Jul 2026filed 29 Jul 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $18K2,048 at $8.56 | filing |
| 28 Jul 2026filed 29 Jul 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $18K2,048 at $8.56 | filing |
| 27 Jul 2026filed 29 Jul 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code F | $24K2,828 at $8.42 | filing |
| 27 Jul 2026filed 29 Jul 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code F | $24K2,828 at $8.42 | filing |
| 17 Feb 2026filed 19 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code A | —25,959 at $0.00 | filing |
| 17 Feb 2026filed 19 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code A | —25,959 at $0.00 | filing |
| 6 Feb 2026filed 9 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $9,780646 at $15.14 | filing |
| 6 Feb 2026filed 9 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $9,780646 at $15.14 | filing |
| 5 Feb 2026filed 9 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $13K890 at $14.59 | filing |
| 5 Feb 2026filed 9 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $13K890 at $14.59 | filing |
| 2 Feb 2026filed 3 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $11K729 at $14.46 | filing |
| 2 Feb 2026filed 3 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $11K729 at $14.46 | filing |
| 30 Jan 2026filed 3 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code F | $15K1,003 at $14.65 | filing |
| 30 Jan 2026filed 3 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code F | $123K8,622 at $14.30 | filing |
| 30 Jan 2026filed 3 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code F | $15K1,003 at $14.65 | filing |
| 30 Jan 2026filed 3 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code F | $123K8,622 at $14.30 | filing |
| 28 Jan 2026filed 3 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $106K7,271 at $14.55 | filing |
| 28 Jan 2026filed 3 Feb 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $106K7,271 at $14.55 | filing |
| 24 Oct 2025filed 27 Oct 2025 | ERII Energy Recoveryoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | $57K5,638 at $10.19 | filing |
| 24 Oct 2025filed 27 Oct 2025 | ERII Energy Recoveryoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | $26K3,530 at $7.50 | filing |
News
Contrasting Energy Recovery (NASDAQ:ERII) & Hyster-Yale (NYSE:HY)ERII · dailypolitical.com · 22 Oct 2026Household rubbish from thousands of Perth properties to be redirected to Kwinana Energy RecoveryERII · perthnow.com.au · 13 Oct 2026I've been running 80 miles a week in marathon training — these are the energy, recovery and hydration products keeping me goingERII · tomsguide.com · 13 Oct 2026
0 headlines in the last 90 days name William Yeung; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.