---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-23-033424"
form_type: "8-K"
ticker: "PPSI"
cik: "0001449792"
company_name: "PIONEER POWER SOLUTIONS, INC."
filed_at: "2023-09-22T23:59:59+00:00"
generated_at: "2026-06-10T09:38:14.886540+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Pioneer Power CFO and CEO surrender shares to reimburse company for tax payments

## Summary
- CFO Michalec surrenders 72,719 shares to reimburse $481,220.28 in taxes paid on his RSU vesting.
- CEO Mazurek surrenders 44,363 shares to reimburse $272,829.32 in taxes paid on his RSU vesting.
- Share surrenders occur on September 20, 2023; value based on closing price on approval date.
- Michalec had previously repaid $34,000 via payroll withholding; remaining balance now covered by shares.
- Mazurek had no prior payroll withholding; full tax payment reimbursed via share cancellation.

## SEC filing metadata
- accession: 0001493152-23-033424
- form_type: 8-K
- ticker: PPSI
- cik: 0001449792
- company_name: PIONEER POWER SOLUTIONS, INC.
- filed_at: 2023-09-22T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1449792/000149315223033424/0001493152-23-033424-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1449792/000149315223033424/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-23-033424
- JSON: https://secwatch.observer/filing/0001493152-23-033424.json
- Plain text: https://secwatch.observer/filing/0001493152-23-033424.txt

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