Ostra Security
PrivateLast Round
Series A
Extension
Aug 7, 2025
Total Funding Raised
$13.5M
Company Overview
Ostra Security operates in Cybersecurity and is based in Eden Prairie, Minnesota. Its latest recorded funding round was a Series A Extension round in August 2025.
Ostra Security is a cybersecurity company that provides a managed security platform designed to navigate risk, strengthen defenses, and achieve secure operations.
Sector
Cybersecurity
Verticals
Endpoint Security, SIEM, Email Security, Incident Response, Vulnerability Management
Business Model
B2B
Customer Profile
Subscription SaaS, Services & Consulting
AI Layer
Application
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Ostra Security Comparables
Compare Ostra Security with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| SolCyber | 91% | |
| Field Effect | 86% | |
| Defendify | 85% |
For institutional investors. Book with your work email.
Ostra Security Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series A Extension | Aug 7, 2025 | ||||
| Series A | Apr 9, 2024 | ||||
| Series A | Nov 16, 2022 |
For institutional investors. Book with your work email.
Ostra Security Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| General Catalyst | Series A Extension |
| Rally Ventures | Series A Extension, Series A |
| Capital Four | Series A Extension |
Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 7, 2025
$6M round led by General Catalyst and Rally Ventures.
- Aug 7, 2025
Acquired cybersecurity company Blackwell Security to strengthen capabilities.
For institutional investors. Book with your work email.
Ostra Security 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.
Book a demoFor institutional investors. Book with your work email.
Frequently Asked Questions
Common questions about Ostra Security's valuation, stock price, and market status.
Is Ostra Security a public or private company?
Ostra Security is a private company.
What is the current stock price of Ostra Security?
Ostra Security is a private company, so its shares have no public market price. Caplight tracks Ostra Security's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Ostra Security worth (valuation)?
Valuation information for Ostra Security is not publicly available.
Can I buy Ostra Security stock?
Ostra Security shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Ostra Security's last funding round?
Ostra Security's most recent funding round was Series A Extension on August 7, 2025.
Who are the main investors in Ostra Security?
Key investors in Ostra Security include General Catalyst, Rally Ventures.
Will Ostra Security IPO soon?
No public IPO plans have been announced for Ostra Security.
How can I track Ostra Security secondary market activity?
Caplight tracks bids, offers, and trades in Ostra Security's shares on secondary markets.