Prolong Pharmaceuticals, LLC
PrivateLast Round
Grant
Nov 3, 2010
Total Funding Raised
$30.24M
Momentum
Top 1%
of companies Caplight tracks
Company Overview
Prolong Pharmaceuticals, LLC is a clinical-stage biopharmaceutical company developing therapies for ischemia and hypoxia in disorders like stroke, sickle cell disease, and cystic fibrosis.
Sector
Healthcare & Life Sciences
Verticals
Biotechnology, Drug Discovery, Clinical Trials
Business Model
B2B
Customer Profile
Government Contracts, Services & Consulting
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Prolong Pharmaceuticals, LLC Comparables
Compare Prolong Pharmaceuticals, LLC with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| NuvOx Therapeutics | 86% | |
| HbO2 Therapeutics | 83% | |
| Pharmazz, Inc. | 81% |
Prolong Pharmaceuticals, LLC Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Grant | Nov 3, 2010 | ||||
| Series C | Oct 14, 2010 | ||||
| Early Funding | Apr 15, 2005 |
Prolong Pharmaceuticals, LLC Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Avtar Investments | Series C |
| KBL Healthcare Ventures | Series C |
| Internal Revenue Service | Grant |
| Tarsadia Investments | Series C |
Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 2, 2026
Grew 22% QoQ, from 18 to 22 employees.
- Jul 24, 2026
Monthly visitors increased 43% MoM.
Prolong Pharmaceuticals, LLC Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
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Request accessFrequently Asked Questions
Common questions about Prolong Pharmaceuticals, LLC's valuation, stock price, and market status.
Is Prolong Pharmaceuticals, LLC a public or private company?
Prolong Pharmaceuticals, LLC is a private company.
What is the current stock price of Prolong Pharmaceuticals, LLC?
Prolong Pharmaceuticals, LLC is a private company with no public stock price. No recent secondary market data is available.
How much is Prolong Pharmaceuticals, LLC worth (valuation)?
Valuation information for Prolong Pharmaceuticals, LLC is not publicly available.
Can I buy Prolong Pharmaceuticals, LLC stock?
Prolong Pharmaceuticals, LLC shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors. Visit https://www.caplight.com to learn more.
When was Prolong Pharmaceuticals, LLC's last funding round?
Funding round information for Prolong Pharmaceuticals, LLC is not publicly available.
Who are the main investors in Prolong Pharmaceuticals, LLC?
Investor information for Prolong Pharmaceuticals, LLC is not publicly disclosed.
Will Prolong Pharmaceuticals, LLC IPO soon?
No public IPO plans have been announced for Prolong Pharmaceuticals, LLC.
How can I track Prolong Pharmaceuticals, LLC secondary market activity?
Caplight tracks bids, offers, and trades for private companies. Visit https://www.caplight.com to monitor Prolong Pharmaceuticals, LLC's secondary market activity and sign up for updates.