Private Investor Jason Dorsett Discloses 29.9% Stake in RTB Digital
RTB has more than doubled off its 52-week low of $3.25.
Summary
Private investor Jason Christopher Dorsett disclosed a 29.9% beneficial ownership stake in RTB Digital, acquired through open-market purchases using personal funds.
Key Events · Ownership and Investor Activity · RTB
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New 29.9% Stake Disclosed
As of 09/17/2026, private investor Jason Christopher Dorsett has disclosed beneficial ownership of 4,193,028 shares of RTB Digital common stock, representing approximately 29.9% of the outstanding shares.
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Acquired via Open-Market Purchases
The shares were acquired through normal common stock purchases using personal funds, per the filing's Item 3 and Item 5 disclosures.
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Investment Purpose Stated
The reporting person states the shares are held for investment purposes, with no disclosed plans for control or extraordinary corporate transactions.
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Separate from Prior 13D Filing
This is a new Schedule 13D/A by a different reporting person than the June 2026 Schedule 13D filed by Chairman James Comer, who disclosed a 31.7% stake.
Analysis · RTB · Trade & Services
A new Schedule 13D/A reveals that private investor Jason Christopher Dorsett has taken a 29.9% stake in RTB Digital, with beneficial ownership of 4,193,028 shares. This filing comes from a different reporting person than the prior 13D submitted by Chairman James Comer in June 2026. The shares were bought in ordinary open-market transactions using personal funds, and the filing indicates they are held for investment purposes. The disclosure arrives during a period of heightened corporate activity for RTB Digital, including a $1B platform agreement with Paradium.AI and a $5.1M private placement at $11.13 per share.
How filings like this one have moved
In the 30 days to Oct 1, 2026, 30.2% of the 1644 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.49%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, RTB was trading at $8.18 on NASDAQ in the Trade & Services sector, with a market capitalization of approximately $114.6M. The 52-week trading range was $3.25 to $20.75. This filing was assessed with neutral market sentiment and an importance score of 7 out of 10.