---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-22-006082"
form_type: "8-K"
ticker: "ARDX"
cik: "0001437402"
company_name: "ARDELYX, INC."
filed_at: "2022-03-14T23:59:59+00:00"
generated_at: "2026-06-26T23:09:25.584433+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Ardelyx appoints Robert Felsch as Chief Accounting Officer; Renz steps down as principal accounting officer

## Summary
- Robert Felsch appointed CAO effective March 10, 2022; also SVP Finance since Feb 2022.
- Justin Renz remains CFO and Treasurer, but no longer serves as Principal Accounting Officer.
- Felsch's base salary $375k, target bonus 35%, sign-on bonuses totaling $100k.
- Felsch received option for 140,626 shares at $0.84 and RSU grant of 30,000 shares; vesting over 4 years.

## SEC filing metadata
- accession: 0001628280-22-006082
- form_type: 8-K
- ticker: ARDX
- cik: 0001437402
- company_name: ARDELYX, INC.
- filed_at: 2022-03-14T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1437402/000162828022006082/0001628280-22-006082-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1437402/000162828022006082/ardx-20220310.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-22-006082
- JSON: https://secwatch.observer/filing/0001628280-22-006082.json
- Plain text: https://secwatch.observer/filing/0001628280-22-006082.txt

## Key facts
- Executive change
  Justin Renz changed role as Chief Financial Officer at ARDELYX, INC..
  - Action: no longer serves as Principal Accounting Officer
  - Role: Chief Financial Officer
  source text: Effective upon Mr. Felsch’s appointment as Chief Accounting Officer, Justin Renz, the Company’s Chief Financial Officer, Principal Accounting Officer and Treasurer will no longer serve as Principal Accounting Officer, but will continue to serve as the Company’s Chief Financial Officer and Treasurer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1437402/000162828022006082/0001628280-22-006082-index.htm
- Executive change
  Robert Felsch was appointed as Chief Accounting Officer at ARDELYX, INC..
  - Action: appointed
  - Role: Chief Accounting Officer
  source text: On March 10, 2022, Ardelyx, Inc. (the “Company”) appointed Robert Felsch as the Company’s Chief Accounting Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1437402/000162828022006082/0001628280-22-006082-index.htm

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