---
schema_version: "secwatch.filing_event.v1"
accession: "0001003078-26-000006"
form_type: "8-K"
ticker: "MSM"
cik: "0001003078"
company_name: "MSC INDUSTRIAL DIRECT CO INC"
filed_at: "2026-01-05T23:59:59+00:00"
generated_at: "2026-05-16T11:36:42.867990+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# MSC Industrial appoints Martina McIsaac CEO & director; Gershwind named Vice Chair

## Summary
- McIsaac became President and CEO effective Jan 1, 2026; also elected to board (size increased to 10).
- Erik Gershwind, former CEO, appointed Non-Executive Vice Chair of the Board effective same date.
- No arrangement or transaction between McIsaac and company requiring disclosure under Item 404.
- Previously announced CEO succession now effective; board composition updated.

## SEC filing metadata
- accession: 0001003078-26-000006
- form_type: 8-K
- ticker: MSM
- cik: 0001003078
- company_name: MSC INDUSTRIAL DIRECT CO INC
- filed_at: 2026-01-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1003078/000100307826000006/0001003078-26-000006-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1003078/000100307826000006/msm-20251231.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001003078-26-000006
- JSON: https://secwatch.observer/filing/0001003078-26-000006.json
- Plain text: https://secwatch.observer/filing/0001003078-26-000006.txt

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