Because not all management teams are founders, and not all founders are on management teams, not all management teams have significant ownership and if they do, it is likely in uneven amounts. If you have a series A, chances are you are recruiting to fill holes. These roles will be at market rates. For example, a good CFO in NYC will not leave an existing role for a start up with a nebulous future for a 25% hit to compensation and some unvested equity grant of a few percent. You really need to frame the question better with some details, starting with if all members of the team founders. Do they have significant equity? Has that equity vested? What roles do each fill? What has the investor's position on this?