Can I extend my 3-month Non-Immigrant B visa to a 1-year visa with multiple re-entries in Samui?

The user is inquiring about extending their 3-month Non-Immigrant B visa and work permit as a shareholder and director of a company. They need clarification on whether they can extend the visa to a 1-year duration with multiple re-entries in Koh Samui or if they must leave the country to obtain a new visa. The comments suggest that if documentation for extension is not met, visiting a Thai consulate in Penang for a new multi-entry Non-B visa is an option, which would require border-bouncing every 90 days.