Mark D. Walker
Chairman and CEO at Direct Digital Holdings Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Direct Digital Holdings Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Direct Digital Holdings Inc. December 20, 202499.8%
-
Direct Digital Holdings Inc. June 12, 2023100.0%
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 2, 2026 | Direct Digital Holdings Inc. | Open-market sale | −500 | $1.90 | $950 |
| Sep 1, 2026 | Direct Digital Holdings Inc. | Open-market sale | −1,636 | $2.06 | $3,370 |
| Aug 27, 2026 | Direct Digital Holdings Inc. | Derivative conversion | +10,000 | — | — |
| Jun 12, 2026 | Direct Digital Holdings Inc. | Open-market sale | −1,363 | $2.80 | $3,816 |
| Apr 1, 2026 | Direct Digital Holdings Inc. | Option exercise | +67 | — | — |
| Apr 1, 2026 | Direct Digital Holdings Inc. | Shares withheld for tax | −20 | $3.29 | $66 |
| Mar 20, 2026 | Direct Digital Holdings Inc. | Option exercise | +45 | — | — |
| Mar 20, 2026 | Direct Digital Holdings Inc. | Shares withheld for tax | −14 | $3.52 | $49 |
| Jan 24, 2026 | Direct Digital Holdings Inc. | Option exercise | +204 | — | — |
| Jan 24, 2026 | Direct Digital Holdings Inc. | Shares withheld for tax | −61 | $16.48 | $1,005 |
| Dec 4, 2025 | Direct Digital Holdings Inc. | Derivative conversion | +300,000 | — | — |
| Nov 14, 2025 | Direct Digital Holdings Inc. | Open-market sale | −245,008 | $0.21 | $51,452 |
| Nov 13, 2025 | Direct Digital Holdings Inc. | Open-market sale | −27,492 | $0.37 | $10,172 |
| Sep 11, 2025 | Direct Digital Holdings Inc. | Derivative conversion | +272,500 | — | — |
| Aug 19, 2025 | Direct Digital Holdings Inc. | Open-market sale | −23,000 | $0.39 | $8,970 |
Questions about Mark D. Walker
What boards is Mark D. Walker on?
Mark D. Walker sits on the board of Direct Digital Holdings Inc.
What company is Mark D. Walker the CEO of?
Mark D. Walker is Chairman and CEO of Direct Digital Holdings Inc.
How long has Mark D. Walker served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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