Guideline Public Transaction Method

Could any one help me understand what the GPCM method means and how is it used.

GPCM doesn’t not include a premium instead you use comps on companies that don’t reflect transactions, determine the equity value then add a premium for control or liquidity whichever.

GTM INCLUDES the premium, you are using comps on different transactions that already may have a premium in it. That is why you need to use discretion when using the guideline transaction method in regards to adding premia, because the comps may already have it included.