---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-110021"
form_type: "8-K"
ticker: "PLUG"
cik: "0001093691"
company_name: "PLUG POWER INC"
filed_at: "2026-09-23T21:00:39+00:00"
generated_at: "2026-09-23T21:02:20.883943+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Plug Power COO Dean Fullerton to resign effective Oct 23, 2026

## Summary
- Dean C. Fullerton notified Plug Power on Sept 17, 2026 he will resign as COO effective Oct 23, 2026.
- Resignation is to accept a position at another company; no disagreement with Company operations.
- Fullerton will assist with transition of duties to certain Executive VPs and VPs.
- CFO Paul Middleton signed the 8-K filed Sept 23, 2026.

## SEC filing metadata
- accession: 0001104659-26-110021
- form_type: 8-K
- ticker: PLUG
- cik: 0001093691
- company_name: PLUG POWER INC
- filed_at: 2026-09-23T21:00:39+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1093691/000110465926110021/0001104659-26-110021-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1093691/000110465926110021/tm2626024d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-110021
- JSON: https://secwatch.observer/filing/0001104659-26-110021.json
- Plain text: https://secwatch.observer/filing/0001104659-26-110021.txt

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