One Month

Employees who left to start YC-backed companies

One Month

Founded 2013onemonth.comYC Company
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See the founders above. We're building genealogy trees showing companies founded by One Month alumni.

YC Companies Founded by One Month Alumni

2 YC-backed companies founded by former One Month employees

Direct - 1 companies

Ophelia YC W20
ophelia.com
One Month → Ophelia
Mattan Griffel Mattan Griffel (Co-Founder & CEO)

Level 1 - 1 companies

Clarion YC W20
clarionhealth.com
One Month → Ophelia → Clarion
Ryan Gallagher, MD Ryan Gallagher, MD (VP of Clinical Strategy)

Frequently Asked Questions

Who founded One Month?

One Month was founded by Mattan Griffel.

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