Mark Heimbouch wired $95,000 hours before OneFlight ‘paused’ flights. Herjavec says he is also planning a lawsuit against the jet card broker.
The first of more than a dozen lawsuits against OneFlight International has named Shark Tank’s Robert Herjavec, a stalwart of the jet card broker’s television campaigns.
OneFlight had featured Herjavec in its BAJit marketing campaigns since 2019.
A new campaign debuted in May.
Mark Heimbouch also names CEO Ferren Rajput, sales chief Mark Dismuke, and a sales executive Mark Sanchez in the lawsuit.
Like allegations in other lawsuits, Heimbouch documents how OneFlight sold existing customers multiple programs that created an ever-increasing balance of flight credits.
When OneFlight suspended operations on September 16, 2026, he had wired the company $741,456 in cash in multiple deals starting in May 2024.
His final wire of $95,000 was on September 15, 2026, hours before the company “paused” operations.
While other lawsuits have referred to Herjavec’s prominent role in BAJit jet card broker’s marketing, Heimbouch is seeking to hold him liable for damages in court.
The filing claims, “Defendant Robert Herjavec—famed television personality, celebrity investor on ABC’s Shark Tank, and high-profile entrepreneur—did not merely serve as a passive paid spokesperson.”
Heimobouch’s lawyers allege, “Herjavec entered into an extensive promotional and equity partnership with OFI, actively holding himself out as a bona fide user, client, equity stakeholder, and national ambassador of OneFlight.”
It continues, “Herjavec lent his significant personal and professional reputation for business acumen, due diligence, and financial trustworthiness to OneFlight, appearing in national commercials, promotional videos, print and digital advertising campaigns, social media blitzes, and press releases explicitly assuring prospective jet card purchasers that OneFlight was the premier, trustworthy, and financially sound choice in private aviation.”
The OneFlight member says he “saw and actively relied upon Robert Herjavec’s high-profile, continuous promotion and personal endorsement of OneFlight,” adding, “Herjavec’s public imprimatur and active promotion instilled confidence in plaintiff regarding OneFlight’s fiscal stability, operational legitimacy, and safety, directly inducing plaintiff to enter into jet-card contracts with OFI and entrust substantial deposits totaling hundreds of thousands of dollars to the enterprise.”
After publication, Herjavec responded to Private Jet Card Comparisons.
The Shark Tank star says he is preparing his own lawsuit against OneFlight.
He wrote:
‘I had no equity participation in OFI and had absolutely no knowledge of their financials and what now seems to be fraudulent activities. Like many people, including employees, I was completely fooled and deceived by this company and its founder. I certainly empathize with everyone affected, and we are filing our own lawsuit for recourse.’
This latest lawsuit also alleges that OneFlight executives pushed members to commit more funds hours before the company said it would stop booking flights.
Heimobouch claims:
‘Between September 11 and September 15, 2026, while OFI was undergoing catastrophic operational collapse, facing widespread defaults and mutiny by direct air carriers refusing to fly due to hundreds of thousands of dollars in delinquent payables, and following the federal immigration detention of its Chief Financial Officer, Defendants Rajput, Dismuke, and Sanchez orchestrated and executed an urgent, deceptive solicitation campaign targeting Plaintiff. Defendant Dismuke affirmatively and falsely represented to Plaintiff that OneFlight was “cash flow positive,” “doing great,” and experiencing “tremendous growth,” urging him to take advantage of an urgent, manufactured deadline to lock in hourly rates through December 2027. Relying upon these specific representations, as well as the overarching assurances of financial stability generated by Herjavec’s endorsements and Rajput’s public statements, plaintiff was induced on September 15, 2026, to wire an additional $95,000 to OFI, bringing his unreturned funds on deposit with OFI to not less than $741,456.’
Just after midnight, Private Jet Card Comparisons first reported OneFlight’s pending shutdown.
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It followed a report the previous week detailing an internal email from Rajput’s sister, Ruby Dalton, the vice president of human resources, acknowledging financial issues.
Her email had put the company’s problems on its former CFO, Hanno Uys, who was in ICE detention since the beginning of the month based on a previous domestic violence arrest.
Later reporting by Private Jet Card Comparisons estimated members had prepaid over $300 million for future flights when it went on hiatus.
In another report, a review of over 1,300 jet card transaction sales revealed that while Rajput and other executives had maintained that its deeply discounted jet card deals were limited, they were, in fact, widespread and proved unsustainable.
For Heimbouch, his lawyers wrote in their filing, “When plaintiff promptly rescinded the agreement and demanded the immediate return of his funds, and sought a banking recall of the $95,000 wire, defendants did not respond to his request to return his money.”
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The lawsuit quotes a press release in which Herjavec states, “I am very proud to be a part of the OneFlight team,” adding, “Ferren and his team have built an incredible company that is changing the private aviation industry.”
The Shark Tank star concludes, “Private aviation is an essential tool for business, and OneFlight makes it accessible, transparent, and seamless. I wouldn’t fly with anyone else.”
According to the lawsuit, “Given the depth of Herjavec’s professional relationship with OneFlight, he knew or should have known the company’s financial position.”
Like other lawsuits, Heimbouch says OneFlight used its sponsorships with the PGA, TGL, and F1 as well as broker certifications from ARGUS and Wyvern to create a “public façade” while lacking the operational liquidity to cover ongoing flight costs.
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Heimbouch alleges that in the final four days before closing OneFlight sales executives, as he hesitated to send the company more money, there were six calls, including claims from Dismuke that the Englewood, Colorado-based charter broker was “doing great” and “cash flow positive.”
Reporting by Private Jet Card Comparisons shows that while OneFlight took in $226 million for future flights in 2026, the value of flights it sold created a $400 million obligation, not counting existing balances for future flights entering the year.
As with others, Heimbouch alleges the company was an “unsustainable Ponzi-like scheme.”
OneFlight nor its former sales executives responded to a request for comment.
(Editor’s note: A response from Herjavec provided after publication has been added)
DOWNLOAD: Heimbouch_v_ONEflight_Internations_Inc
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