---
schema_version: "secwatch.filing_event.v1"
accession: "0001421517-23-000162"
form_type: "8-K"
ticker: "ERII"
cik: "0001421517"
company_name: "Energy Recovery, Inc."
filed_at: "2023-10-24T23:59:59+00:00"
generated_at: "2026-06-09T13:50:55.558935+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Energy Recovery appoints David Moon as interim CEO; Bob Mao steps down

## Summary
- David Moon, a current Board member, appointed Interim President and CEO effective October 23, 2023.
- Bob Mao departed as President and CEO but remains on the Board; Pamela Tondreau elected Chairperson.
- Moon will receive $550k base salary plus ~$280k one-time equity award, pro-rated for service duration.
- Moon previously led Carrier Commercial Refrigeration and Heatcraft Worldwide Refrigeration.
- Comprehensive search for permanent CEO underway with executive search firm.

## SEC filing metadata
- accession: 0001421517-23-000162
- form_type: 8-K
- ticker: ERII
- cik: 0001421517
- company_name: Energy Recovery, Inc.
- filed_at: 2023-10-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1421517/000142151723000162/0001421517-23-000162-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1421517/000142151723000162/erii-20231023.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001421517-23-000162
- JSON: https://secwatch.observer/filing/0001421517-23-000162.json
- Plain text: https://secwatch.observer/filing/0001421517-23-000162.txt

## Key facts
- Executive change
  David Moon was appointed as Interim President and Chief Executive Officer at Energy Recovery, Inc..
  - Action: appointed
  - Role: Interim President and Chief Executive Officer
  source text: On October 23, 2023, the Board of Directors (the “Board”) of Energy Recovery, Inc. (the “Company”) appointed David Moon, a current member of the Board as Interim President and Chief Executive Officer, effective immediately, to hold such position until a permanent successor President and Chief Executive Officer is appointed.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1421517/000142151723000162/0001421517-23-000162-index.htm
- Executive change
  Robert Yu Lang Mao departed as President and Chief Executive Officer at Energy Recovery, Inc..
  - Action: departed
  - Role: President and Chief Executive Officer
  source text: On October 23, 2023, Robert Yu Lang Mao, President and Chief Executive Officer, departed as President and Chief Executive Officer, effective October 23, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1421517/000142151723000162/0001421517-23-000162-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.