Brown Marianne Catherine — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

Brown Marianne Catherine has filed 6 SEC Form 4 filings across 4 companies in the last 90 days.

Profile

Marianne Catherine Brown is a corporate director with experience serving on the boards of several major companies, including Northrop Grumman Corp and IBM. She has held multiple director roles and has been involved in various SEC filings, indicating her active participation in corporate governance.

Board memberships

• NORTHROP GRUMMAN CORP
• INTERNATIONAL BUSINESS MACHINES CORP
• SCHWAB CHARLES CORP
• AKAMAI TECHNOLOGIES INC

Awards & honors

• Director at multiple major corporations
• Active in corporate governance

Recent Transactions

Companies — Last 90 Days

• SCHWAB CHARLES CORP (SCHW) — 2 filings, last 2026-07-06
• INTERNATIONAL BUSINESS MACHINES CORP (IBM) — 1 filings, last 2026-07-02
• NORTHROP GRUMMAN CORP /DE/ (NOC) — 2 filings, last 2026-07-01
• AKAMAI TECHNOLOGIES INC (AKAM) — 1 filings, last 2026-05-14

Frequently Asked Questions

Who is Brown Marianne Catherine?

Marianne Catherine Brown is a corporate director with experience serving on the boards of several major companies, including Northrop Grumman Corp and IBM. She has held multiple director roles and has been involved in various SEC filings, indicating her active participation in corporate governance.…

How many SEC Form 4 filings has Brown Marianne Catherine submitted recently?

6 primary Form 4 filings in the last 90 days, covering 4 companies.

Where can I see all of Brown Marianne Catherine'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.

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