San Francisco-based ForUsAll, provider of a financial platform that advises small and mid-sized businesses on their 401(k) plans, announced it has raised $21 million in a round of funding. Ribbit Capital led the round, which included Foundation Capital and other existing investors. The company, founded in 2014, has now raised $34 million in total funding. As part of the latest financing, Ribbit General Partner Nick Shalek has joined the board. The company also announced it has reached $500 million in retirement assets under management.