Viant Technology Inc. (DSP) has 14 known insider and institutional holders on record. The largest holder is LICHTENSTEIN WARREN G with 9,653,412 shares. Other notable holders include MILLENCO, L.L.C. and MILLENCO LLC.
Over the last 12 months, insiders have made 67 transactions in DSP stock — 10 buys (valued at RSU Award) and 49 sells (valued at $4.1M). Insider selling has exceeded buying during this period.
DSP Insider Ownership
Top Holder
LICHTENSTEIN WARREN G
9,653,412 shares
Buys (12 mo)
10
$0.00 value
Sells (12 mo)
49
$4.1M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Lichtenstein Warren G |
10 Percent Owner, Officer: Chairman, President and CEO |
9,653,412 |
2007-11-02 |
|
| 2 |
Millenco, L.l.c. |
10 Percent Owner |
6,018,550 |
2008-10-15 |
|
| 3 |
Millenco Llc |
10 Percent Owner |
5,860,750 |
2009-02-17 |
|
| 4 |
Integrated Core Strategies (us) Llc |
10 Percent Owner |
5,319,050 |
2009-08-04 |
|
| 5 |
Steel Partners Ii Liquidating Series Trust - F |
10 Percent Owner |
668,988 |
2009-07-27 |
|
| 6 |
Madden Larry |
Chief Financial Officer |
610,455 |
2026-04-03 |
|
| 7 |
Bergamo Anthony |
Director |
100,000 |
2007-10-18 |
|
| 8 |
Yang Vivian |
Director |
93,913 |
2025-06-09 |
|
| 9 |
Williams Elizabeth Goodman |
Director |
87,137 |
2024-06-04 |
|
| 10 |
Wilson Brett |
Director |
35,919 |
2025-06-09 |
|
| 11 |
Valdes Max O |
Director |
26,429 |
2025-06-09 |
|
| 12 |
Capital V Llc |
10 Percent Owner |
23,760 |
2026-03-19 |
|
| 13 |
Vanderhook Timothy |
10 Percent Owner, Officer: CEO and Chairman |
7,920 |
2026-03-19 |
|
| 14 |
Vanderhook Christopher |
10 Percent Owner, Officer: Chief Operating Officer |
7,920 |
2026-03-19 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-02 |
Madden Larry |
Chief Financial Officer |
Informative Sell |
10,131 |
$10.94 |
$110.88K |
| 2026-04-01 |
Madden Larry |
Chief Financial Officer |
Informative Sell |
7,410 |
$11.27 |
$83.54K |
| 2026-03-19 |
Capital V Llc |
10 Percent Owner |
Informative Sell |
8,760 |
$11.42 |
$100.06K |
| 2026-03-18 |
Capital V Llc |
10 Percent Owner |
Informative Sell |
15,000 |
$12.00 |
$179.98K |
| 2026-03-17 |
Capital V Llc |
10 Percent Owner |
Informative Sell |
15,000 |
$11.80 |
$176.94K |
| 2026-03-19 |
Vanderhook Christopher |
10 Percent Owner, Officer: Chief Operating Officer |
Informative Sell |
2,920 |
$11.42 |
$33.35K |
| 2026-03-18 |
Vanderhook Christopher |
10 Percent Owner, Officer: Chief Operating Officer |
Informative Sell |
5,000 |
$12.00 |
$59.99K |
| 2026-03-17 |
Vanderhook Christopher |
10 Percent Owner, Officer: Chief Operating Officer |
Informative Sell |
5,000 |
$11.80 |
$58.98K |
| 2026-03-19 |
Vanderhook Timothy |
10 Percent Owner, Officer: CEO and Chairman |
Informative Sell |
2,920 |
$11.42 |
$33.35K |
| 2026-03-18 |
Vanderhook Timothy |
10 Percent Owner, Officer: CEO and Chairman |
Informative Sell |
5,000 |
$12.00 |
$59.99K |
| 2026-03-17 |
Vanderhook Timothy |
10 Percent Owner, Officer: CEO and Chairman |
Informative Sell |
5,000 |
$11.80 |
$58.98K |
| 2026-03-15 |
Madden Larry |
Chief Financial Officer |
RSU Award |
249,258 |
- |
- |
| 2026-03-13 |
Madden Larry |
Chief Financial Officer |
Informative Sell |
1,658 |
$13.03 |
$21.61K |
| 2026-03-10 |
Vanderhook Christopher |
10 Percent Owner, Officer: Chief Operating Officer |
Return of Shares |
44,177 |
$10.50 |
$463.86K |
| 2026-03-10 |
Vanderhook Timothy |
10 Percent Owner, Officer: CEO and Chairman |
Return of Shares |
44,177 |
$10.50 |
$463.86K |
| 2026-03-10 |
Madden Larry |
Chief Financial Officer |
Tax Withholding of RSU |
35,289 |
$10.50 |
$370.53K |
| 2026-02-19 |
Capital V Llc |
10 Percent Owner |
Informative Sell |
9,836 |
$9.17 |
$90.21K |
| 2026-02-18 |
Capital V Llc |
10 Percent Owner |
Informative Sell |
14,167 |
$9.19 |
$130.13K |
| 2026-02-17 |
Capital V Llc |
10 Percent Owner |
Informative Sell |
12,237 |
$9.26 |
$113.37K |
| 2026-02-19 |
Vanderhook Christopher |
10 Percent Owner, Officer: Chief Operating Officer |
Informative Sell |
3,279 |
$9.17 |
$30.07K |
| 2026-02-18 |
Vanderhook Christopher |
10 Percent Owner, Officer: Chief Operating Officer |
Informative Sell |
4,722 |
$9.19 |
$43.37K |
| 2026-02-17 |
Vanderhook Christopher |
10 Percent Owner, Officer: Chief Operating Officer |
Informative Sell |
4,079 |
$9.26 |
$37.79K |
| 2026-02-19 |
Vanderhook Timothy |
10 Percent Owner, Officer: CEO and Chairman |
Informative Sell |
3,279 |
$9.17 |
$30.07K |
| 2026-02-18 |
Vanderhook Timothy |
10 Percent Owner, Officer: CEO and Chairman |
Informative Sell |
4,722 |
$9.19 |
$43.37K |
| 2026-02-17 |
Vanderhook Timothy |
10 Percent Owner, Officer: CEO and Chairman |
Informative Sell |
4,079 |
$9.26 |
$37.79K |
