Open Raven, a cloud native data security platform company, has raised $15 million in a Series A investment. 

Viz.ai, developers of a synchronized healthcare software using artificial intelligence (AI), has raised $50 million in Series B funding.

Santa Clara, CA-based Shape Security, providers of a platform for bot and online fraud mitigation, has raised $51 million.

Nextdoor has closed a $170 million round of funding.

Bulletin, a retail technology company that helps brands to expand into brick-and-mortar sales, has closed $7 million in a Series A funding round.