Marianne Catherine Brown
b. 1959
Sits on 4 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 4
- Current seats
- 4
- Board service
- 14 years
- Director since
- 2023
14 years of board service in total across 4 boards, counting each seat separately. Longest: Northrop Grumman Corporation, 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Akamai Technologies Inc. May 13, 202699.1%
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International Business Machines Corporation April 28, 202696.5%
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Akamai Technologies Inc. May 14, 202599.4%
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International Business Machines Corporation April 29, 202597.2%
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Akamai Technologies Inc. May 10, 202499.5%
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International Business Machines Corporation April 30, 202498.6%
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Northrop Grumman Corporation May 17, 202398.2%
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Akamai Technologies Inc. May 11, 202398.8%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 30, 2026 | Northrop Grumman Corporation | Grant or award | +96 | $483.48 | $46,414 |
| Jun 30, 2026 | Northrop Grumman Corporation | Grant or award | +91 | $509.31 | $46,347 |
| May 26, 2026 | The Charles Schwab Corporation | Grant or award | +1,602 | — | — |
| May 20, 2026 | Northrop Grumman Corporation | Grant or award | +349 | $552.17 | $192,707 |
| Mar 31, 2026 | Northrop Grumman Corporation | Grant or award | +68 | $682.24 | $46,392 |
| Dec 31, 2025 | Northrop Grumman Corporation | Grant or award | +81 | $570.21 | $46,187 |
| Sep 30, 2025 | Northrop Grumman Corporation | Grant or award | +76 | $609.32 | $46,308 |
| Jun 30, 2025 | Northrop Grumman Corporation | Grant or award | +93 | $499.98 | $46,498 |
| May 27, 2025 | The Charles Schwab Corporation | Grant or award | +1,462 | — | — |
| May 21, 2025 | Northrop Grumman Corporation | Grant or award | +385 | $473.90 | $182,452 |
| Mar 31, 2025 | Northrop Grumman Corporation | Grant or award | +90 | $512.01 | $46,081 |
| Dec 31, 2024 | Northrop Grumman Corporation | Grant or award | +99 | $469.29 | $46,460 |
| Sep 30, 2024 | Northrop Grumman Corporation | Grant or award | +88 | $528.07 | $46,470 |
| Jul 31, 2024 | Northrop Grumman Corporation | Grant or award | +377 | $484.32 | $182,589 |
| Jul 31, 2024 | Northrop Grumman Corporation | Grant or award | +94 | $484.32 | $45,526 |
Questions about Marianne Catherine Brown
What boards is Marianne Catherine Brown on?
Marianne Catherine Brown sits on the boards of Akamai Technologies Inc., International Business Machines Corporation, Northrop Grumman Corporation and The Charles Schwab Corporation.
How long has Marianne Catherine Brown served on boards?
Our records show at least 14 years of board service across 4 boards, the earliest from 2023.
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