Zefr
PrivateLast Round
Convertible Debt
Mar 10, 2016
Est. Valuation
$272.48M
Total Funding Raised
$63.5M
Momentum
Top 50%
of companies Caplight tracks
Company Overview
Zefr operates in Enterprise Software and is based in Los Angeles, California. Its latest recorded funding round was a Convertible Debt round in March 2016.
Zefr is an enterprise software company that provides AI-powered content classification, brand suitability targeting, and measurement solutions for digital advertisers on major social platforms.
Sector
Enterprise Software
Verticals
Digital Advertising, Marketing, Data Governance, Compliance & Risk
Business Model
B2B
Customer Profile
Subscription SaaS, Services & Consulting
AI Layer
Application
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Zefr Comparables
Compare Zefr with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Pixability | 88% | |
| Sightly | 86% | |
| Integral Ad Science | 83% |
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Zefr Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Convertible Debt | Mar 10, 2016 | ||||
| Early Funding | Feb 26, 2014 | ||||
| Series C | Aug 15, 2012 | ||||
| Series B | Aug 9, 2011 | ||||
| Series A | Nov 9, 2010 |
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Key People
Founding team and executive leadership
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Zefr Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Uncork Capital | Series C, Series A |
| MK Capital | Series C, Convertible Debt, Series B |
| U.S. Venture Partners | Early Funding, Series C, Convertible Debt |
| Shasta Ventures | Series C, Series B, Early Funding, Series A |
| First Round Capital | Series C, Early Funding, Convertible Debt, Series B, Series A |
| Institutional Venture Partners (IVP) | Early Funding |
| Richmond Park Partners | Series C, Early Funding, Seed, Series A, Series B |
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Market signals
Structured signals derived from secondary market and firmographic data.
- May 9, 2026
Added CMI Media Group, a marketing/advertising firm.
- Apr 30, 2026
Launched Zain, an agentic hub for its technology setup.
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Recent news
Latest coverage and updates
- partners_withOct 1, 2026
Zefr and Reddit Inc. partner to provide advertisers with AI-powered content-level intelligence, brand safety, suitability insights, and measurement across Reddit Inc.'s advertising platform.
- launchesAug 10, 2026
Zefr will launch Opti on Aug 17th '26.
- has_revenueAug 10, 2026
In 2025, Zefr records $26.7M in revenue.
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Zefr Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
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Frequently Asked Questions
Common questions about Zefr's valuation, stock price, and market status.
Is Zefr a public or private company?
Zefr is a private company.
What is the current stock price of Zefr?
Zefr is a private company, so its shares have no public market price. Caplight tracks Zefr's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Zefr worth (valuation)?
Zefr's valuation is estimated at $272.5M based on funding round data.
Can I buy Zefr stock?
Zefr shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Zefr's last funding round?
Zefr's most recent funding round was Convertible Debt on March 10, 2016.
Who are the main investors in Zefr?
Key investors in Zefr include Uncork Capital, MK Capital, U.S. Venture Partners, Shasta Ventures, First Round Capital.
Will Zefr IPO soon?
No public IPO plans have been announced for Zefr.
How can I track Zefr secondary market activity?
Caplight tracks bids, offers, and trades in Zefr's shares on secondary markets.