What He MadeAll 21 ventures

The sons’ other deals

Other businesses the Trump sons joined or backed: the Executive Branch club in Washington, adviser roles at Kalshi, Polymarket and Dominari Holdings, a seat on GrabAGun’s board, and a brief stake in Thumzup Media.

Owned by
Donald Trump Jr. co-owns the Executive Branch club, advises Kalshi and Polymarket, sits on GrabAGun’s board and holds Dominari Holdings shares. Eric Trump also advises Dominari.

On Who He Hired: Steve Witkoff

The money 1

  1. $500,000

    Other money

    Fee each founding member paid to join the Executive Branch club, as Business Insider reported. This is per member, not the club’s total take.

    Executive Branch, the club Donald Trump Jr. co-ownsAs of Sources: Business Insider via Yahoo News

What the labels mean
  1. ConvictedA criminal jury found them guilty, or they pleaded guilty and were sentenced.
  2. Found liableA civil jury ruled against them.
  3. Court ruledA judge ruled against them or their policy.
  4. Watchdog foundAn inspector general, a congressional investigation, Congress’s auditors at the GAO, or a regulator.
  5. AdmittedThey acknowledged it, or their own filings and records show it.
  6. On recordSomething they said or did in public.
  7. ReportedNews reporting they deny or haven’t confirmed.
  8. AllegedAccusations from lawsuits, complaints or unnamed sources that haven’t been proven.

Admitted or on record 1

  1. Admitted

    Donald Trump Jr. reported owning 1,182,276 Dominari Holdings shares, about 5.23% of the company, in a filing with the SEC on June 1, 2026.

    The filing says he exercised 216,138 warrants on May 22, 2026, and holds warrants for another 216,138 shares that he can’t exercise yet. Forbes reported in April 2025 that each brother held about 1.2 million shares, most of them paid as advisory board compensation.

    Sources: SEC filing via Stock Titan, Forbes Argentina

Reported and alleged 4

  1. Reported

    Donald Trump Jr. co-owns Executive Branch, a Washington club where founding members paid $500,000 to join, Business Insider reported.

    Co-owners include 1789 Capital co-founders Omeed Malik and Chris Buskirk, and Zach and Alex Witkoff, sons of Trump envoy Steve Witkoff, Politico reported. David Sacks, the White House AI and crypto czar, said on the All-In podcast that there were about 10 founding members, including himself and Chamath Palihapitiya. “We wanted to create something new, hipper, and Trump-aligned,” Sacks said.

    Sources: Business Insider via Yahoo News

  2. Reported

    The CFTC sided with prediction markets against state regulators while Donald Trump Jr. advised both Kalshi and Polymarket.

    Trump Jr. became a strategic adviser to Kalshi in January 2025 and joined Polymarket’s advisory board in August 2025, when 1789 Capital invested in it on undisclosed terms. CFTC Chairman Michael Selig said he was filing a brief in the Ninth Circuit arguing that federal law preempts state gambling laws, and added: “we will see you in court.”

    Sources: Front Office Sports, The Block

  3. Reported

    Thumzup Media disclosed that Donald Trump Jr. held 350,000 of its shares a week after Dominari Securities, whose parent the Trump sons advise, arranged a $6 million placement for the company.

    The stake was worth about $4 million in July 2025, The Block reported. Protos later reported he sold it soon after; no sale date or price was given. A person close to Trump Jr. told Bloomberg that he acquired the stake on the advice of an investment adviser and has no other involvement with the company, The Block reported.

    Sources: The Block, Protos

  4. Reported

    GrabAGun’s stock market debut left board member Donald Trump Jr. with a stake worth about $4 million, Bloomberg reported.

    The online gun seller began trading as PEW on July 16, 2025, and its shares fell more than 20% that day, IBTimes UK reported. Trump Jr. sits on the company’s board.

    Sources: Bloomberg Tax, IBTimes UK