EIN MARK — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

EIN MARK has filed 2 SEC Form 4 filings across 1 company in the last 90 days.

Profile

Mark Ein is a prominent entrepreneur and investor known for his roles in various companies, including Custom Truck One Source, LINDBLAD Expeditions, and Soho House. He has a background in technology and telecommunications and has been involved in numerous startups and investments.

Board memberships

• Custom Truck One Source, Inc.
• LINDBLAD Expeditions Holdings, Inc.
• Soho House Co Inc.

Awards & honors

• Director at multiple public companies
• Investments in technology startups
• Entrepreneurial ventures in telecommunications

Recent Transactions

Companies — Last 90 Days

• LINDBLAD EXPEDITIONS HOLDINGS, INC. (LIND) — 2 filings, last 2026-06-02

Frequently Asked Questions

Who is EIN MARK?

Mark Ein is a prominent entrepreneur and investor known for his roles in various companies, including Custom Truck One Source, LINDBLAD Expeditions, and Soho House. He has a background in technology and telecommunications and has been involved in numerous startups and investments.…

How many SEC Form 4 filings has EIN MARK submitted recently?

2 primary Form 4 filings in the last 90 days, covering 1 company.

Where can I see all of EIN MARK's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

Learn More

• What is SEC Form 4?
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