Sondhi has applied for Bt10 million bail pending the appellate review.
The case was based on the fraudaulent transactions between two listed companies, Manager Media Group and M Group, in order to secure six loans worth Bt1 billion from Krung Thai Bank.
The prosecution charged Sondhi and three defendants for conspiring to doctor the minutes of Manager Media board meetings in order to authorise him to act as loan guarantor for M Group.
Sondhi had acted without the authorisation and failed to report his liabilities to the stock market.
Even though the four defendants had pleaded guilty and asked for leniency for a suspended sentence, the court found no grounds for communting the punishment.
Under the securities law, the convicts will serve no more than 20 years in jail regardless of the original sentencing.
The Nation