No, Pink sheets do not have to report anything.
I found this on Wickipedia:
Limited Information
Is designed for companies with financial reporting problems, economic distress, or in bankruptcy to make the limited information they have publicly available. The Limited Information category also includes companies that may not be troubled, but are unwilling to meet Pink Sheets' Guidelines for Providing Adequate Current Information. Companies in this category have limited financial information not older than six months available on the Pink Sheets News Service or have made a filing on the SEC's EDGAR system in the previous six months.
[edit] No Information
Indicates companies that are not able or willing to provide disclosure to the public markets - either to a regulator, a stock exchange or Pink Sheets. Companies in this category do not make Current Information available via Pink Sheets News Service, or if they do, the available information is older than six months. This category includes defunct companies that have ceased operations as well as 'dark' companies with questionable management and market disclosure practices. Publicly traded companies that are not willing to provide information to investors should be treated with suspicion and their securities should be considered highly risky.
