13F Pro

SEC Form 4 reporting owner

Vanderhook Christopher

Vanderhook Christopher has filed 37 Form 4 transactions reported between December 16, 2025 and September 10, 2026, as Chief Operating Officer of Viant Technology Inc..

Name as filed: Vanderhook Christopher

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$1.3M
26 lines
Companies
1
with Form 4 filings
Latest transaction
Sep 10, 2026
transaction date

Roles and reported holdings

  • DSPViant Technology Inc.
    Dec 16, 2025 – Sep 10, 2026

    Chief Operating Officer

    Held directly293,880 sh as of Jun 15, 2026 · Form 4
    Held indirectly (latest line)0 sh as of Jul 23, 2026 · Form 4

    24 months: $1.3M sold

Transaction history

All 37 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 10, 2026DSPChief Operating OfficerDisposition to issuerCode D · direct8,636$110K@ $12.74Form 4
Jul 23, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy4,304$45K@ $10.47Form 4
Jul 22, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$55K@ $11.03Form 4
Jul 21, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy3,196$37K@ $11.70Form 4
Jul 21, 2026DSPChief Operating OfficerOption exerciseCode M · indirect12,500—Form 4
Jun 18, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy2,500$27K@ $10.96Form 4
Jun 17, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$55K@ $11.09Form 4
Jun 16, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$56K@ $11.17Form 4
Jun 16, 2026DSPChief Operating OfficerOption exerciseCode M · indirect12,500—Form 4
Jun 15, 2026DSPChief Operating OfficerOpen-market saleCode S · directAlso reported by Vanderhook Timothy9,125$101K@ $11.10Form 4
Jun 9, 2026DSPChief Operating OfficerGiftCode G · indirect52,096—Form 4
May 21, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy2,500$27K@ $10.79Form 4
May 20, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$53K@ $10.60Form 4
May 19, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$54K@ $10.89Form 4
May 19, 2026DSPChief Operating OfficerOption exerciseCode M · indirect12,500—Form 4
Apr 22, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy2,796$30K@ $10.74Form 4
Apr 21, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy4,704$51K@ $10.91Form 4
Apr 20, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$56K@ $11.12Form 4
Apr 20, 2026DSPChief Operating OfficerOption exerciseCode M · indirect12,500—Form 4
Mar 19, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy2,920$33K@ $11.42Form 4
Mar 18, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$60K@ $12.00Form 4
Mar 17, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$59K@ $11.80Form 4
Mar 17, 2026DSPChief Operating OfficerOption exerciseCode M · indirect12,500—Form 4
Mar 10, 2026DSPChief Operating OfficerDisposition to issuerCode D · direct44,177$464K@ $10.50Form 4
Feb 19, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy3,279$30K@ $9.17Form 4
Feb 18, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy4,722$43K@ $9.19Form 4
Feb 17, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy4,079$38K@ $9.26Form 4
Feb 17, 2026DSPChief Operating OfficerOption exerciseCode M · indirect12,500—Form 4
Jan 22, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy2,574$33K@ $12.87Form 4
Jan 21, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy4,926$60K@ $12.24Form 4
Jan 20, 2026DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$60K@ $11.94Form 4
Jan 20, 2026DSPChief Operating OfficerOption exerciseCode M · indirect12,500—Form 4
Dec 19, 2025DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy2,500$29K@ $11.79Form 4
Dec 18, 2025DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$60K@ $11.93Form 4
Dec 17, 2025DSPChief Operating OfficerOpen-market saleCode S · indirectAlso reported by Vanderhook Timothy5,000$59K@ $11.74Form 4
Dec 17, 2025DSPChief Operating OfficerOpen-market saleCode S · directAlso reported by Vanderhook Timothy9,102$107K@ $11.70Form 4
Dec 16, 2025DSPChief Operating OfficerOption exerciseCode M · indirect12,500—Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.