- The question relates to Part I of that schedule. Only other entities that are shareholders are reported in Part 1, not natural persons. https://www.irs.gov/pub/irs-pdf/f1120sg.pdf
- Shares of the company that have never been issued or were bought back from a shareholder by the company are known as "Treasury shares." Those shares have no voting rights or pay dividends, so they don't get reported on Schedule G or anywhere else on the tax return.
