A Connecticut businessman pleaded guilty on Friday to pocketing money he made selling antiques instead of using it to pay a judgment he owed U.S. regulators for illegal stock trading.

Robert Olins, the former CEO of now-defunct television display maker SpatiaLight Inc, pleaded guilty in open court to conspiring to obstruct justice and to money laundering before U.S. District Judge Jesse Furman in Manhattan federal court.

He agreed to give up $657,000 to the U.S. Securities and Exchange Commission and to a court-appointed receiver to which he also owes money.

Olins is set to be sentenced on September 29. He has agreed not to appeal any sentence less than three years and five months. His attorney declined to comment after the plea hearing.

Olins, 59, was arrested last August.

According to a criminal complaint, he made $657,000 selling antiques in 2012, the year after the U.S. Securities and Exchange Commission won a $3.4 million judgment against him.

Authorities say Olins conspired with an antiques dealer to hide the sale from a court-appointed receiver tasked with helping the SEC collect the judgment.

The $3.4 million judgment stemmed from a 2007 lawsuit by the SEC against Olins, SpatiaLight and Olins' wholly-owned company Argyle Capital Management Corp.

The SEC contended that Olins and Argyle illegally sold more than 400,000 shares of SpatiaLight stock without disclosing the sales.

In 2012, a Manhattan federal judge appointed Oklahoma-based American Bank and Trust Company as receiver to help satisfy the judgment by overseeing the sale of pieces in Olins' arts and antiques collection, which has been appraised at $8.6 million to $13.8 million.