Every person violating AS 03.40.140 is guilty of a felony, unless the person upon trial establishes and proves that the person was at the time the actual owner of the stock sold or traded or offered for sale or trade, or that the person acted by the direction of one proved to be the actual owner of the stock. Every person convicted shall be imprisoned for not less than two years nor more than five years. In prosecutions for a violation of AS 03.40.140 it is not necessary to prove motive, intent, or purpose on the part of the accused, or that the accused knew that the stock were sold, traded, or offered in violation of AS 03.40.140. The fact of selling, trading, or offering for sale or trade contrary to AS 03.40.140, when proved, is sufficient to authorize a conviction, unless the accused by testimony explains the case made by the state in a manner consistent with good faith and an innocent purpose.