OpenEvidence
Leadership & Board
Key Executives
Co-Founder and CTOZachary Ziegler
FounderDaniel Nadler
Current Number of Employees114
Current LinkedIn Followers36,167
Latest Estimated Valuation
Estimated Valuation$12B
Estimated Valuation$12B
Total Amount Raised$560M
Total Amount Raised$560M
Total Funding Rounds3
Total Funding Rounds3
Latest Funding Amount$250M
Latest Funding Amount$250M
Latest Funding RoundSeries D
Latest Funding RoundSeries D
Post-Money Valuation$12B
Post-Money Valuation$12B
Employee Trend
OpenEvidence had 114 employees as of April 13, 2026. The number of employees increased by 3 (2.70%) week-over-week.
114Latest Employee Count
3(2.70%)Week-Over-Week Change
Employee Trend serves as a data-driven indicator of company growth and expansion. The measurement reflects how a company’s workforce size changes over time.
Social Trend
OpenEvidence had 36,167 followers as of April 13, 2026. The number of followers increased by 613 (1.72%) week-over-week.
36,167Latest Followers Count
613(1.72%)Week-Over-Week Change
LinkedIn Follower Trend serves as a data-driven indicator of market interest and company visibility. The measurement reflects how a company’s LinkedIn follower count changes over time.
Funding Round
Jan 21, 2026
Series D
$250.00M
$12.00B
Jul 15, 2025
Series B
$210.00M
$3.50B
Feb 20, 2025
Series A
$100.00M
$1.00B
Investors
Series A
Series B
Series B
Series B
Series B
Series B
Series B
Series D
