Here's a list of some of the recent startup pitch decks published by Business Insider:
AirBnB: The first-ever investor pitch deck for $31 billion startup Airbnb' which has raised over $3 billion and is nearing an IPO
Amify: Here's the pitch deck a Virginia startup used to raise $6 million after seven years of bootstrapping its business
Brex: A buzzy startup raised $57 million from Peter Thiel and Y Combinator using these 19 slides