This should be helpful. Good luck.

Materiality: Determining whether information is material is perhaps the most difficult aspect of complying with Regulation FD.
Questions to ask include:
●● Is there a substantial likelihood that an investor would consider the information important in deciding whether to buy or sell the company’s securities?
●● Will the information alter the “total mix” of information available about the company in the market place?
●● Is the information likely to have a substantial effect on the market price of the company’s securities?

https://www.cooley.com/~/media/cooley/pdf/pg-...ashx?la=en