Briefly explain what are Special Classes of Common Stocks & Founder Shares

Let’s  say we create two classes of common stock namely:

• Class A which has no voting rights but is entitles to receive dividends before dividends can be paid on Class B common stock
• Class B for stockholders who have the exclusive right to vote

{ note that the above two classes A & B have no standard meaning}

Founder shares:

Founders’ shares are stock owned by the firm’s founders that have sole voting rights but restricted dividends for a specified number of years.