You can reinvest into your corporation, increase your share ownership, prevent hostile takeovers.
I did a tutorial on this trick as I recently learned it.
It is simple, issue shares and buy them with your CEO Money. Shares are cheaper so you get more ownership, you also dilute existing shares of others so and you sort of fundraise yourself

Full Video: https://www.youtube.com/watch?v=zZwvczO ... smLabStory
Jump to Trick: https://www.youtube.com/watch?v=zZwvczOYPfs&t=450s
Text + Lessons learned: https://capitalismlabstory.com/using-ce ... ny-season/