Although US stocks closed lower on Monday, there were a few notable insider trades. When insiders purchase shares, it indicates their confidence in the company's prospects or that they view the stock as a bargain. Either way, this signals an opportunity to go long on the stock. Insider purchases should not be taken as the only indicator for making an investment or trading decision. At best, it can lend conviction to a buying decision. Below is a look at a few recent notable insider purchases. For more, check out Benzinga's insider transactions platform. Byline Bancorp The Trade: Byline Bancorp, Inc. (NYSE:BY) Director Antonio del Valle Perochena acquired a total of 9,447 shares an average price of $25.22. To acquire these shares, it cost around $238.3 thousand. What's Happening: Byline Bancorp recently posted upbeat quarterly results. What Byline Bancorp Does: Byline Bancorp Inc is the holding company for Byline Bank, a full-service commercial bank serving small-and-medium-sized businesses, financial sponsors, and consumers. NextEra Energy The Trade: NextEra Energy, Inc. (NYSE:NEE) Director Amy Lane acquired a total of 1,000 shares at an average price of $74.86. To acquire these shares, it cost around $74.86 thousand. What's Happening: NextEra Energy recently posted upbeat quarterly earnings. What NextEra Energy Does: NextEra Energy's regulated utility, Florida Power & Light, distributes power to more than 5 million customers in Florida. Donâ€t forget to check out our premarket coverage here Primis Financial The Trade: Primis Financial Corp. (NASDAQ:FRST) Director Charles A Kabbash bought a total of 2,025 shares at an average price of $12.56. To acquire these shares, it cost around $25.44 thousand. What's Happening: The company recently posted downbeat quarterly earnings. What Primis Financial Does: Primis Financial Corp is the bank holding company for Primis Bank, providing financial services to individuals and small and medium-sized businesses. Check This Out: 5 Cheapest Industrials Stocks You Should Think About