Jason Graf discussed various types of equity and mezzanine financing for businesses. Equity financing involves selling ownership stakes in a company, such as through issuing shares, taking on partners, or working with venture capitalists. Mezzanine financing blends debt and equity by allowing lenders to convert to an ownership interest if the loan is not repaid. Mezzanine financing is typically used by larger and more established companies. Graf also provided examples of how he has helped structure different financing deals for various businesses.