Who Gets Spirit Airlines' Employee Data? A Bidding War With No Clear Winner

Key points

• Micro1, an AI data company, offered $12.5 million for Spirit Airlines' employee and customer data after Google had already won it at auction for $10 million.
• The data set covers roughly 600 million email and chat records from 17,000 employees, plus more than 30 million recorded customer service calls.
• Spirit Airlines filed for bankruptcy protection in late 2024, and its data is being treated as a sellable asset to raise cash for creditors.
• Former Spirit employees, represented in part by the Association of Flight Attendants-CWA, went to court last week to block any sale.
• Anonymising the data before any transfer is one option under discussion.

Spirit Airlines collapsed into bankruptcy in late 2024. The planes stopped flying, the jobs disappeared, but the data stayed, and it turns out to be worth a great deal of money.

As first reported by CSO Online, the airline accumulated a remarkable archive during its years of operation: around 600 million email and Microsoft Teams chat records generated by 17,000 employees, 17 million files stored in OneDrive (Microsoft's cloud file storage service), 20.5 million SharePoint items (documents and pages held on Microsoft's internal collaboration platform), and more than 30 million recorded customer service phone calls. The records stretch back decades.

Why does anyone want old airline emails?

Companies building artificial intelligence systems need enormous quantities of real human communication to train their models. Workplace emails and call recordings are especially valuable because they show how people actually talk at work, not how they talk in textbooks. That's the appeal here, and it's why three separate companies have now competed for this particular archive.

Google bid $10 million for the archive at a court-supervised auction, beating a $7.5 million offer from Mercor, another AI training company. Then Micro1, a third AI data firm, arrived with a $12.5 million counter-offer, reopening a process many assumed was closed.

Should former Spirit employees be worried?

Yes, and many already are. The archive contains sensitive workplace records belonging to people who lost their jobs when Spirit shut down, none of whom consented to their private communications being sold to a technology company.

Sara Nelson, international president of the Association of Flight Attendants-CWA, which still represents more than 5,500 former Spirit flight attendants, told Forbes the situation feels particularly unfair. The airline wants to profit from employee data while those same employees are still waiting for accrued vacation time, sick leave, and outstanding compensation they're owed. Last week the unions filed legal action to block any sale of the data.

The pattern isn't new. We reported in August on a class-action lawsuit claiming Amazon fed millions of hours of Twitch broadcasts into its AI systems without giving creators any say. The Spirit case is the same argument in a bankruptcy courtroom: whose rights survive when a company dissolves and its data becomes a creditor asset?

What happens next?

One path forward is anonymisation, a process where identifying details are stripped out before any data changes hands. Done properly, it makes tracing a message back to a specific person harder. Done imperfectly, it doesn't: researchers have repeatedly shown that large, detailed data sets can sometimes be re-identified even after scrubbing.

The bankruptcy judge overseeing Spirit's estate will ultimately decide whether the data can be sold, on what terms. That ruling will set a precedent worth watching, because other bankrupt companies are sitting on comparable archives.

Former Spirit customers who called the airline's service line should know those recordings may be part of the contested archive. Your voice could, depending on the court's ruling, end up in an AI training set. There's no action to take right now beyond watching for court updates in the Spirit Airlines bankruptcy case.

Common questions

Can a bankrupt company really sell its employees' private messages?

In a US bankruptcy, almost any company asset can be sold to pay creditors, and courts have broad discretion. Whether employee data qualifies depends on the specific facts, applicable privacy law, and how the court weighs workers' objections against creditors' financial claims.

What is anonymisation, and does it actually protect people?

Anonymisation means removing or scrambling details that identify a specific person. When done thoroughly it reduces re-identification risk, but large and detailed data sets have been re-identified after anonymisation before, so it isn't a guaranteed fix.