Generally speaking, as subsequent financing rounds occur, existing investors will own proportionally less of the company than they did previously since additional equity is usually issued as part of a new financing round. Dilution is not necessarily a bad thing _ since new stock can be issued at a higher price, you may own a smaller piece of a larger company, which means the value of your investment is higher than it was previously.
Generally speaking, as subsequent financing rounds occur, existing investors will own proportionally less of the company than they did previously since additional equity is usually issued as part of a new financing round. Dilution is not necessarily a bad thing _ since new stock can be issued at a higher price, you may own a smaller piece of a larger company, which means the value of your investment is higher than it was previously.