Polymarket has dismissed Chief Marketing Officer Matthew Modabber following an internal investigation into controversial promotional practices and other conduct that reportedly raised concerns among investors. The decision was reported by The New York Post on October 22, 2026.
Modabber, who joined the prediction market platform in January 2024, was one of its early employees and played a significant role in its marketing and growth strategy. His departure comes as Polymarket seeks to strengthen its internal controls and develop a more mature corporate structure amid speculation about a potential initial public offering (IPO).
According to sources cited by The New York Post, the investigation examined several incidents, including a promotional campaign involving allegedly staged videos of users making money from fictitious trades. The campaign had previously attracted attention from The Wall Street Journal and prompted an investigation by the US Commodity Futures Trading Commission (CFTC).
The regulatory investigation remains ongoing, and no wrongdoing has been established.
Why Did Polymarket Fire Matthew Modabber?
The reported dismissal followed an internal review of several incidents that raised concerns about Polymarket’s marketing practices and corporate reputation.
One of the central issues was a reported campaign in which Modabber’s team allegedly created a fake webpage featuring staged videos of people claiming to have made money through Polymarket. The promotional material presented simulated trading results in a way that could be mistaken for genuine user experiences.
The Wall Street Journal reported on the campaign in June 2026, bringing the issue to wider attention and triggering regulatory scrutiny.
According to reporting by The New York Post, Polymarket’s legal team had raised concerns about the marketing approach before the story became public. The internal investigation reportedly also examined Modabber’s relationships with influencers and the way promotional payments were handled.
Neither the reported dismissal nor the existence of an investigation should be treated as proof of a regulatory violation. The CFTC inquiry into the promotional practices remains unresolved.
Fake Trading Videos and Regulatory Scrutiny
The controversy centres on the distinction between genuine trading results and promotional content that may give users a misleading impression of a platform’s activity.
Prediction markets allow participants to trade contracts linked to the outcomes of real-world events. Platforms such as Polymarket rely on user participation and market activity, making trust in the accuracy of displayed information an important part of their business model.
If promotional materials portray fictitious trades or simulated profits as authentic user results, they can raise questions about transparency and advertising practices.
Following the Wall Street Journal report, Polymarket said it was committed to maintaining accurate, fair, and transparent markets. The company also indicated that it intended to conduct a comprehensive audit of active promotional content.
The outcome of the CFTC investigation may provide further clarity on the regulatory implications of the alleged campaign.
Influencer Payments Also Examined
The internal review reportedly extended beyond the fake-trading controversy to the handling of payments to social media influencers.
According to reporting cited by The New York Post, investigators examined Modabber’s alleged use of a personal PayPal account to pay influencers promoting Polymarket. The payments reportedly raised questions about whether commercial relationships were disclosed adequately.
Separately, a June 2026 investigation by Politico examined influencer payments associated with Polymarket and the use of Modabber’s personal account for some transactions.
Undisclosed paid promotions can create transparency concerns because audiences may not realise that endorsements are commercially sponsored. The applicable disclosure requirements depend on the relevant jurisdiction and circumstances.
The precise conclusions of Polymarket’s internal review have not been publicly detailed, and the reported payment arrangements should not be taken as proof that every transaction or promotion breached applicable rules.
CEO Shayne Coplan’s Relationship With Modabber
Modabber’s departure reportedly became more complicated because of his longstanding friendship with Polymarket founder and CEO Shayne Coplan.
The two knew each other from high school and remained closely associated as the company expanded. Sources cited by The New York Post said the relationship made disciplinary action more difficult and reportedly created tensions with members of the company’s legal team.
According to the newspaper, Coplan initially reacted angrily to efforts to remove Modabber but later accepted that separating from the marketing executive was in the company’s interests.
Polymarket and Coplan have not publicly confirmed every detail of the reported internal discussions. The account of disagreements within the company is based on sources cited by the newspaper.
The case nevertheless highlights a governance challenge for rapidly growing technology companies: personal relationships among senior executives can complicate decisions involving accountability, compliance, and corporate risk.
Polymarket Seeks to Strengthen Its Corporate Structure
The dismissal comes amid broader changes at Polymarket as it seeks to move beyond its startup origins.
In August 2026, the company restructured its marketing department and brought in the founder of electric scooter company Bird to lead the division. According to reports, the move had already reduced Modabber’s role before his departure.
The company’s board reportedly concluded that his continued involvement was becoming an obstacle to efforts to improve Polymarket’s public image and prepare for a possible IPO.
An initial public offering would introduce additional scrutiny of the company’s governance, financial controls, marketing practices, and risk management. However, Polymarket has not confirmed that an IPO will take place or announced a definitive timetable.
The reported changes suggest that the company is reassessing how its marketing and management functions operate as it pursues further growth.
What the Dismissal Means for Prediction Markets
The case comes at a time when prediction markets are attracting greater attention from regulators, investors, and the wider financial industry.
Platforms in this sector operate in an environment where questions about market integrity, transparency, advertising, and regulatory oversight can directly affect public confidence.
For Polymarket, the controversy creates additional pressure to demonstrate that promotional campaigns accurately represent its services and that internal controls are capable of identifying potential problems.
The episode also illustrates the importance of separating three distinct issues: allegations concerning individual employees, the findings of a company’s internal investigation, and the conclusions of an external regulator. These processes may overlap, but they do not necessarily reach the same conclusions.
As the CFTC investigation continues, the regulatory outcome remains an important unresolved aspect of the story.
Source: https://nypost.com/2026/10/22/business/polymarket-fires-top-executive-who-was-closely-allied-with-ceo-shayne-coplan-sources/
