Executives are showing interest in three penny stocks, including Standard BioTools. This company, along with two others, has caught the attention of executives who are buying shares. Standard BioTools is a popular choice among investors due to its potential growth and profitability. The other two penny stocks are also gaining traction in the market. It is always important to do thorough research before investing in any penny stocks, as they can be highly volatile. Executives are optimistic about the future of these companies and are confident in their investment decisions.