H5 pioneered technology-assisted review over a decade ago, and today some of the largest and most respected Fortune 500 companies and AmLaw 200 law firms turn to H5 to help them cost-effectively meet their production obligations and gain the advantage in litigation. H5 provides highly accurate document review via our technology-assisted review service, combining advanced search technology with the expertise needed to implement it effectively and measurement protocols to validate the results. Our professionals have expertise in linguistics, statistics, computer science, law, information technology, process engineering, and e-discovery. Through our battle-tested approach, which has been independently proven to yield more cost-effective, consistent, and accurate results than any review method, we have helped clients save millions of dollars in document review costs and achieve billions in favorable legal outcomes.
San Francisco, US
Size (employees)
218 (est)+2%
H5 was founded in 1999 and is headquartered in San Francisco, US
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H5 Office Locations

H5 has offices in Seattle, San Francisco, Chicago, New York and in 2 other locations
San Francisco, US (HQ)
595 Market St
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H5 Financials and Metrics

Summary Metrics

Founding Date


Total Funding

$6.9 m

Latest funding size

$395 k

Time since last funding

5 years ago


H5's latest funding round in September 2013 was reported to be $395 k. In total, H5 has raised $6.9 m
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H5 News and Updates

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