A St. Louis investor has emerged as a shareholder in Aegean Marine Petroleum Network as the marine fuel logistics company continues to distance itself from its founder.

Towle & Co., a private equity firm led by J. Ellwood Towle, now owns 5.21%, or 2.1 million shares, of the company established in 1995 by Dimitris Melisanidis.

A stakeholder must file notice with the Securities and Exchange Commission when its interest in a listed company exceeds 5%.