---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-24-015571"
form_type: "8-K"
ticker: null
cik: "0001634447"
company_name: "ISUN, INC."
filed_at: "2024-04-22T23:59:59+00:00"
generated_at: "2026-06-03T14:02:22.992909+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# iSun CEO Robert Zulkoski steps down; Jeffrey Peck appointed CEO, Rob Vanderbeek Interim CFO

## Summary
- Robert J. Zulkoski relinquished CEO role effective April 16, 2024.
- Jeffrey Peck appointed Chief Executive Officer effective April 16, 2024.
- Rob Vanderbeek appointed Interim Chief Financial Officer effective April 17, 2024, via Novo Advisors, LLC.
- Vanderbeek has over 30 years of restructuring and corporate finance experience.
- Peck briefly served as Interim CFO but resigned April 17, 2024.

## SEC filing metadata
- accession: 0001493152-24-015571
- form_type: 8-K
- cik: 0001634447
- company_name: ISUN, INC.
- filed_at: 2024-04-22T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1634447/000149315224015571/0001493152-24-015571-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1634447/000149315224015571/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-24-015571
- JSON: https://secwatch.observer/filing/0001493152-24-015571.json
- Plain text: https://secwatch.observer/filing/0001493152-24-015571.txt

## Key facts
- Executive change
  Jeffrey Peck was appointed as Interim Chief Financial Officer at ISUN, INC..
  - Action: appointed
  - Role: Interim Chief Financial Officer
  source text: Effective April 16, 2024, the Board appointed Jeffrey Peck to serve as Chief Executive Officer and Interim Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1634447/000149315224015571/0001493152-24-015571-index.htm
- Executive change
  Robert J. Zulkoski departed as Chief Executive Officer at ISUN, INC..
  - Action: relinquished
  - Role: Chief Executive Officer
  source text: Effective April 16, 2024, Robert J. Zulkoski relinquished his role as Chief Executive Officer of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1634447/000149315224015571/0001493152-24-015571-index.htm
- Executive change
  Jeffrey Peck was appointed as Chief Executive Officer at ISUN, INC..
  - Action: appointed
  - Role: Chief Executive Officer
  source text: Effective April 16, 2024, the Board appointed Jeffrey Peck to serve as Chief Executive Officer and Interim Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1634447/000149315224015571/0001493152-24-015571-index.htm
- Executive change
  Jeffrey Peck resigned as Interim Chief Financial Officer at ISUN, INC..
  - Action: resigned
  - Role: Interim Chief Financial Officer
  source text: Effective April 17, 2024, Mr. Peck resigned as Interim Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1634447/000149315224015571/0001493152-24-015571-index.htm
- Executive change
  Rob Vanderbeek was appointed as Interim Chief Financial Officer at ISUN, INC..
  - Action: appointed
  - Role: Interim Chief Financial Officer
  source text: Effective April 17, 2024, the Board appointed Rob Vanderbeek to serve as Interim Chief Financial Officer pursuant to a Letter of Engagement between Novo Advisors, LLC and the Company, dated April 16, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1634447/000149315224015571/0001493152-24-015571-index.htm

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