Aegean Marine's largest unsecured creditors are its bondholders.

The company, which declared chapter 11 bankruptcy Tuesday, has $94.5m in debt that matured last Thursday and another $172.5m coming due in 2021.

Those two figures are, by far, the two largest on the refueling company's unsecured claims list included on its petition filed in New York federal court.'

The company owes, contractually, another $20m to American Express Travel Related Services.