SCHEDULE Filed 2026-01-13 Event 2026-01-09 SEC 0001828791-26-000005 →

MADDEN LARRY → Viant Technology Inc. DSP

Stake: 7.80% Shares: 1,401,423 CUSIP: 92557A101 Class: Class A common stock, par value $0.001 per share

Composite Decision Signal · PASS (LOW BASE-RATE EDGE) Conviction Score: 23/100 · Filer 90d Win Rate: 0% · Hist. 90d Edge: -16.9%

Passive Schedule 13G filer baseline
High conviction ownership stake (7.8%)
Held by 1 tracked 13F institutional manager
9 NPORT-P mutual funds holding CUSIP
Moderate short days-to-cover (4.4 DTC)

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

65 transactions

2 buys · 42 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 2026-10-15

DTC 4.44

2,180,698 shares short · +2.7% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers

1 holder · $357K

Point72 Asset Mgmt

Post-Filing Returns · since 2026-01-09 on DSP

+1 day

-0.5%

+5 days

+1.8%

+30 days

-8.8%

+60 days

-7.9%

+90 days

-10.2%

+180 days

+11.7%

Anchor price 11.40 on closest trading day on/after 2026-01-09. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

Date	Insider	Role	Type	Shares	Price	Value
2026-10-13	MADDEN LARRY	officer	Sale	20,711	$13.14	$272K
2026-09-10	Vanderhook Christopher	director, officer, 10%+ owner	Disposition	8,636	$12.74	$110K
2026-09-10	Vanderhook Timothy	director, officer, 10%+ owner	Disposition	8,636	$12.74	$110K
2026-09-10	MADDEN LARRY	officer	F	24,016	$12.74	$306K
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	—	—

Showing 25 of 65

Other 13D/G Filings on Viant Technology Inc.

Filed	Form	Filer	Stake	Shares
2026-06-18	SCHEDULE 13D/A	MADDEN LARRY	5.10%	—	view →
2025-06-04	SCHEDULE	MADDEN LARRY	6.46%	1,083,162	view →

Other Filings by MADDEN LARRY

Filed	Form	Issuer	Stake	Shares
2026-06-18	SCHEDULE 13D/A	MADDEN LARRY DSP	5.10%	—	view →
2025-06-04	SCHEDULE	Viant Technology Inc. DSP	6.46%	1,083,162	view →

Want this depth on every filing the moment it hits SEC EDGAR?

Free $0 (48h-delayed alerts) · Individual $49/mo (real-time) · Team & API $199/mo · Enterprise.

See pricing →