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SCHEDULE Filed 2025-06-04 Event 2025-06-02 SEC 0001641172-25-013691 →

MADDEN LARRY → Viant Technology Inc. DSP

Stake: 6.46% Shares: 1,083,162 CUSIP: 92557A101 Class: Class A common stock, par value $0.001 per share

Item 4 — Purpose of Transaction

10b5-1 Trading Plan - June 2025 On June 2, 2025, the Reporting Person entered into a new trading plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the "June 2025 10b5-1 Trading Plan"). Pursuant to the June 2025 10b5-1 Trading Plan, the Broker agreed to make periodic sales of up to an aggregate of 300,095 shares of Class A Common Stock (the "Plan Shares") on behalf of the Reporting Person through March 31, 2026, less any and all additional shares sold pursuant to the previously disclosed December 2024 Trading Plan. The Plan Shares includes up to 136,628 shares to be issued upon the vesting of restricted stock units, which will be reduced by the number of shares withheld to cover taxes, if any. The amount and timing of sales, if any, pursuant to the June 2025 10b5-1 Trading Plan will be determined based on the terms of the June 2025 10b5-1 Trading Plan, market conditions, share price and other factors. This description of the June 2025 10b5-1 Trading Plan does not purport to be complete and is qualified in its entirety by the text of the June 2025 10b5-1 Trading Plan, which is attached as an exhibit to this Schedule 13D and incorporated herein by reference.

Cross-References

Insider Activity (last 365d)
61 transactions
2 buys · 39 sales · 20 awards/exercises
Issuer Cluster
3 13D/G filings on this issuer
2 other filings besides this one
Filer Track Record
3 filings by this filer
2 other filings in the data moat
Short Interest · settle 2026-07-15
DTC 6.99
1,272,573 shares short · +8.7% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $357K
Point72 Asset Mgmt

Post-Filing Returns · since 2025-06-02 on DSP

+1 day
+3.2%
+5 days
+6.5%
+30 days
+0.1%
+60 days
+2.5%
+90 days
-23.5%
+180 days
-16.9%

Anchor price 13.30 on closest trading day on/after 2025-06-02. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-07-23 MADDEN LARRY officer Sale 2,814 $10.69 $30K
2026-06-18 Vanderhook Christopher director, officer, 10%+ owner Sale 2,500 $10.96 $27K
2026-06-18 Vanderhook Timothy director, officer, 10%+ owner Sale 2,500 $10.96 $27K
2026-06-18 Capital V LLC 10%+ owner Sale 7,500 $10.96 $82K
2026-06-17 Vanderhook Christopher director, officer, 10%+ owner Sale 5,000 $11.09 $55K
2026-06-17 Vanderhook Timothy director, officer, 10%+ owner Sale 5,000 $11.09 $55K
2026-06-17 Capital V LLC 10%+ owner Sale 15,000 $11.09 $166K
2026-06-16 Vanderhook Christopher director, officer, 10%+ owner Option exercise 12,500 — —
2026-06-16 Vanderhook Christopher director, officer, 10%+ owner Disposition 12,500 — —
2026-06-16 Vanderhook Christopher director, officer, 10%+ owner Sale 5,000 $11.17 $56K
2026-06-16 Vanderhook Christopher director, officer, 10%+ owner Option exercise 12,500 — —
2026-06-16 Vanderhook Timothy director, officer, 10%+ owner Option exercise 12,500 — —
2026-06-16 Vanderhook Timothy director, officer, 10%+ owner Disposition 12,500 — —
2026-06-16 Vanderhook Timothy director, officer, 10%+ owner Sale 5,000 $11.17 $56K
2026-06-16 Vanderhook Timothy director, officer, 10%+ owner Option exercise 12,500 — —
2026-06-16 Capital V LLC 10%+ owner Option exercise 37,500 — —
2026-06-16 Capital V LLC 10%+ owner Disposition 37,500 — —
2026-06-16 Capital V LLC 10%+ owner Sale 15,000 $11.17 $168K
2026-06-16 Capital V LLC 10%+ owner Option exercise 37,500 — —
2026-06-09 VALDES MAX O director Sale 3,386 $11.97 $41K
2026-06-09 Vanderhook Christopher director, officer, 10%+ owner Gift 52,096 — —
2026-06-09 Vanderhook Christopher director, officer, 10%+ owner Award 52,096 — —
2026-06-09 Vanderhook Christopher director, officer, 10%+ owner Gift 52,096 — —
2026-06-09 Vanderhook Christopher director, officer, 10%+ owner Award 52,096 — —
2026-06-08 VALDES MAX O director Sale 3,300 $12.10 $40K
Showing 25 of 61

Other 13D/G Filings on Viant Technology Inc.

FiledFormFilerStakeShares
2026-06-18 SCHEDULE 13D/A MADDEN LARRY 5.10% — view →
2026-01-13 SCHEDULE MADDEN LARRY 7.80% 1,401,423 view →

Other Filings by MADDEN LARRY

FiledFormIssuerStakeShares
2026-06-18 SCHEDULE 13D/A MADDEN LARRY DSP 5.10% — view →
2026-01-13 SCHEDULE Viant Technology Inc. DSP 7.80% 1,401,423 view →

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