Summary
Updated Aug 31, 2026
Arve Hanstveit is Director of Energy Recovery, Inc. (ERII). 6 SEC Form 4 filings on record going back to 2024, most recently on 5 June 2026. Most recent open-market trade: sold $25K of ERII on 8 April 2026. Lifetime open-market sales: $2.85M.
Recent Transactions
7Every recent SEC Form 4 transaction Arve Hanstveit has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Arve Hanstveit go back to 2024: 6 primary Form 4 filings, an average of 2.0 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Arve Hanstveit files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- William Yeung - $1.28M of ERII open-market activity in the last 12 months
- Rodney Clemente - $275K of ERII open-market activity in the last 12 months
- Pamela L. Tondreau - $167K of ERII open-market activity in the last 12 months
- Alexander J. Buehler - $130K of ERII open-market activity in the last 12 months
- Colin R. Sabol - $99K of ERII open-market activity in the last 12 months
- Natarajan Ramanan - $3K of ERII open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Arve Hanstveit?
Arve Hanstveit is a corporate insider, tracked as Director of Energy Recovery, Inc. (ERII). InsiderAlpha holds 6 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Arve Hanstveit submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Arve Hanstveit been buying or selling stock?
Recorded transactions: 0 open-market purchases and 6 open-market sales ($2.85M) across all tracked filings.
Where can I see all of Arve Hanstveit's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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