. Let’s say we’re trying to create these models but don’t have enough information or the company doesn’t tell us enough in its filings – what do we do?

Use estimates. For the revenue if you don’t have enough information to look at separate product lines or divisions of the company, you can just assume a simple growth rate into future years.

For the expenses, if you don’t have employee-level information then you can just assume that major expenses like SG&A are a percent of revenue and carry that assumption forward.