Fannie Mae is starting to market a risk-sharing transaction to investors. A Fannie spokesman said the government-sponsored enterprise is working with the Federal Housing Finance Agency to meet the goals set by the conservator of the GSEs. Mark Lefanowicz will be the CEO of Fenway Summer’s mortgage venture, according to an announcement this week by Raj Date, the founder of the firm. Fenway Summer plans to originate non-qualified mortgages and Lefanowicz has previously worked at ... [Includes five briefs]