 Harpoon Therapeutics Inc NASDAQ:HARP was trading 5.5 higher from the previous closing price. Erbez Georgia filed a Form 4 with the SEC on Tuesday, August 4. The insider bought 1,817 shares at an average price of 10.92. After the transaction, the executives stake in Harpoon Therapeutics Inc. moved to 1,817 shares.Why Insider Transactions Are Important? Insider transactions shouldnt be used primarily to make an investing decision, however an insider transaction can be an important factor in the investing decision.Insiders buying stock after a notable sell off can indicate an insiders long-term belief in the success of the company; insiders buying stock at new highs can be an indication the exec doesnt feel the stock is overvalued. Conversely, insiders who are selling stock at new lows can potentially indicate some kind of capitulation moment. Insiders selling at new highs can indicate that exec wants to take some profit and lock in a gain.Transaction Codes To Focus On Wall Street tends to focus on insider transactions which take place in the open market, viewed inside a Form 4 filing via codes P for purchase and S for sale. If the transaction was an open-market transaction, that means that the insider made a concious decision for the companys stock moving forward.Transaction codes other than P or S are often viewed with less conviction as they are often not tied to a decision by the exec. As an example, transaction code C indicates the conversion of an option. Transaction code A indicates the insider may have been forced to sell shares in order to receive compensation the exec was promised upon being hired by a company.See more from Benzinga CSG Systems Internationals Earnings Outlook Fitbits Earnings: A Preview Earnings Preview for CenturyLinkC 2020 Benzinga.com. Benzinga does not provide investment advice. All rights reserved. 