---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-055997"
form_type: "8-K"
ticker: "OSS"
cik: "0001394056"
company_name: "ONE STOP SYSTEMS, INC."
filed_at: "2025-04-21T23:59:59+00:00"
generated_at: "2026-05-23T10:04:37.330957+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.72
calibrated_materiality_score: 0.72
confidence: "high"
source: SEC EDGAR
---

# Director Joseph Manko Jr. resigns from One Stop Systems board, citing governance disputes with Chairman Potashner

## Summary
- Manko resigned effective April 16, 2025, citing disagreements with corporate governance and board composition.
- He opposed Chairman Kenneth Potashner's continued inclusion after two years of shareholder votes against him.
- Manko's proposed board candidate was rejected from the 2025 annual meeting slate.
- Manko is a large shareholder and will remain a shareholder, reserving all rights.
- He cited poor governance flagged by ISS and difficulty implementing majority voting standard.

## SEC filing metadata
- accession: 0000950170-25-055997
- form_type: 8-K
- ticker: OSS
- cik: 0001394056
- company_name: ONE STOP SYSTEMS, INC.
- filed_at: 2025-04-21T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.72
- calibrated_materiality_score: 0.72
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1394056/000095017025055997/0000950170-25-055997-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1394056/000095017025055997/oss-20250421.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-055997
- JSON: https://secwatch.observer/filing/0000950170-25-055997.json
- Plain text: https://secwatch.observer/filing/0000950170-25-055997.txt

## Key facts
- Executive change
  Joseph Manko, Jr. resigned as Director at ONE STOP SYSTEMS, INC..
  - Action: resigned
  - Role: Director
  source text: On April 16, 2025, Mr. Joseph Manko, Jr. notified the Board of Directors (the “Board”) of One Stop Systems, Inc. (the “Company”) of his resignation from the Board, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1394056/000095017025055997/0000950170-25-055997-index.htm

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