Sandip Shah, 41, a California-based business consultant, was convicted following a five-day jury trial on nine counts of wire fraud.
Shah was indicted in May 2014, and is scheduled to be sentenced in August this year.
Shah was involved in a scheme to pay secret kickbacks to a purported investment fund representative who had agreed to use the fund's money to buy stock in three companies that had hired Shah to help them raise capital.
Shah and the company executives were unaware that the purported investment fund representative was actually an undercover agent with the FBI.
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The conviction followed a year-long investigation focusing on preventing fraud in the micro-cap stock markets.
Micro-cap companies are small publicly traded companies whose stock often trades at pennies a share.
Fraud in the micro-cap markets is of increasing concern to regulators as such markets have proven to be fertile grounds for fraud and abuse.
This is, in part, because accurate information about micro-cap stocks may be difficult for the average investor to find, since many micro-cap companies do not file financial reports with the Securities Exchange Commission.