Late-stage data security startup ALTR on Wednesday announced the closing of a $25 million funding round to continue building and marketing its SaaS-based data access governance and security products.

The company said the Series C was led by John Stafford III and included new, unidentified investors from the financial, medical, and data space.

The Florida-based ALTR  has raised more than $55 million since emerging from stealth in 2018 with ambitious plans to build data security tools on blockchain technology.