Who
Alexander J. Buehler
Interim President and CEO
Company insider
Files Form 4 as: Interim President and CEO, Energy Recovery; Interim CEO, LiqTech International; Director, Viscount Systems; V.P. - Marketing & Technology, Insituform Technologies.
In numbers
- Trades disclosed
- 63
- Buys
- 4
- Sells
- 8
- Bought
- $1.3M
- Sold
- $2.6M
- Companies
- 4
- Companies where not an officer
- 1
- First trade
- 29 Jan 2008
- Last trade
- 15 Jun 2026
- Last filed
- 17 Jun 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 | |
|---|---|---|---|---|
| 15 Jun 2026filed 17 Jun 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code M | $132K15,327 at $8.60 | filing |
| 15 Jun 2026filed 17 Jun 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $130K14,900 at $8.71 | filing |
| 15 Jun 2026filed 17 Jun 2026 | ERII Energy Recoveryoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | $132K15,327 at $8.60 | filing |
| 15 Jun 2026filed 17 Jun 2026 | ERII Energy Recoveryoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | $132K15,327 at $8.60 | filing |
| 15 Jun 2026filed 17 Jun 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code M | $132K15,327 at $8.60 | filing |
| 15 Jun 2026filed 17 Jun 2026 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Sold | $130K14,900 at $8.71 | filing |
| 5 Jun 2025filed 6 Jun 2025 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code A | —12,038 at $0.00 | filing |
| 7 Jan 2025filed 13 Jan 2025 | LIQT LiqTech InternationalMachinery | SEC FORM 4 Code A | —53,030 at $0.00 | filing |
| 19 Aug 2024filed 21 Aug 2024 | ERII Energy Recoveryoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | $58K19,841 at $2.92 | filing |
| 19 Aug 2024filed 21 Aug 2024 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code M | $58K19,841 at $2.92 | filing |
| 6 Jun 2024filed 10 Jun 2024 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code A | —11,127 at $0.00 | filing |
| 3 Jan 2024filed 8 Jan 2024 | LIQT LiqTech InternationalMachinery | SEC FORM 4 Code A | —20,940 at $0.00 | filing |
| 8 Jun 2023filed 12 Jun 2023 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code A | $100K3,703 at $27.00 | filing |
| 3 Jan 2023filed 31 Jan 2023 | LIQT LiqTech InternationalMachinery | SEC FORM 4 Code A | —98,000 at $0.00 | filing |
| 1 Jan 2023filed 31 Jan 2023 | LIQT LiqTech InternationalMachinery | SEC FORM 4 Code A | —924,089 at $0.00 | filing |
| 1 Jan 2023filed 31 Jan 2023 | LIQT LiqTech InternationalMachinery | SEC FORM 4 Code A | —97,456 at $0.00 | filing |
| 9 Jun 2022filed 13 Jun 2022 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code A | $100K4,807 at $20.80 | filing |
| 3 Jun 2022filed 6 Jun 2022 | ERII Energy Recoveryoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | $58K16,449 at $3.53 | filing |
| 3 Jun 2022filed 6 Jun 2022 | ERII Energy Recoveryoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | $98K33,551 at $2.92 | filing |
| 3 Jun 2022filed 6 Jun 2022 | ERII Energy RecoverySemiconductor Equipment | SEC FORM 4 Code M | $58K16,449 at $3.53 | filing |
News
Household 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 2026KSA Business: Energy Recovery lands key supply contract for Saudi SWRO projectERII · gdnonline.com · 12 Oct 2026
0 headlines in the last 90 days name Alexander J. Buehler; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.