Circle Pharma
PrivateLast Round
Series E
Sep 16, 2026
Total Funding Raised
$300M
Momentum
Top 5%
of companies Caplight tracks
Company Overview
Circle Pharma is a biopharmaceutical company that develops cell-permeable macrocyclic peptide therapeutics for the treatment of cancer and other serious illnesses.
Sector
Healthcare & Life Sciences
Verticals
Biotechnology, Drug Discovery, Clinical Trials
Business Model
B2B
Customer Profile
Services & Consulting
AI Layer
Application
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Circle Pharma Comparables
Compare Circle Pharma with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Unnatural Products | 84% | |
| Dayra Therapeutics | 80% | |
| Parabilis Medicines | 80% |
Circle Pharma Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series E | Sep 16, 2026 | ||||
| Series D | Sep 3, 2024 | ||||
| Series C | Jun 16, 2021 | ||||
| Series B | Mar 17, 2020 | ||||
| Series A | Apr 25, 2017 | ||||
Seed | Jan 7, 2016 |
Key People
Founding team and executive leadership
Circle Pharma Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| The Column Group | Series B, Series C, Series E, Series D |
| RA Capital Management | Series E |
| WI Harper Group | Series A |
| Lifeforce Capital | Series B, Series C, Series A |
| The Chernin Group | Series B, Series C |
| Berkeley Catalyst Fund | Series B, Series C |
| Hartford Hospital | Series C |
Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 16, 2026
$93M round led by The Column Group
- Jun 18, 2026
Monthly visitors increased 46% MoM.
Recent news
Latest coverage and updates
- promotesSep 28, 2026
Circle Pharma announces the promotion of Marie Evangelista, Ph.D., to chief scientific officer in California on Sep 28th '26.
- hiresSep 28, 2026
On Sep 28th '26, Circle Pharma appoints Mary Ellen Sillivos as senior vice president and head of human resources in California to support the company’s organizational growth and leadership team.
- hiresSep 27, 2026
In California, Circle Pharma appoints Mary Ellen Sillivos as Senior Vice President and Head of Human Resources as it advances its cancer drug pipeline and builds its organization for its next phase of development.
- hiresSep 27, 2026
Circle Pharma hires Marie Evangelista as senior vice president and head of cancer biology in 2024.
- promotesSep 27, 2026
Circle Pharma promotes Marie Evangelista from senior vice president and head of cancer biology to chief scientific officer, giving her broader scientific leadership responsibilities for its MXMO platform and targeted macrocycle therapeutics pipeline in California.
Circle Pharma 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.
Request accessFrequently Asked Questions
Common questions about Circle Pharma's valuation, stock price, and market status.
Is Circle Pharma a public or private company?
Circle Pharma is a private company.
What is the current stock price of Circle Pharma?
Circle Pharma is a private company, so its shares have no public market price. Caplight tracks Circle Pharma's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Circle Pharma worth (valuation)?
Valuation information for Circle Pharma is not publicly available.
Can I buy Circle Pharma stock?
Circle Pharma shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Circle Pharma's last funding round?
Circle Pharma's most recent funding round was Series E on September 16, 2026.
Who are the main investors in Circle Pharma?
Key investors in Circle Pharma include The Column Group, WI Harper Group, Lifeforce Capital, The Chernin Group, Element Partners.
Will Circle Pharma IPO soon?
No public IPO plans have been announced for Circle Pharma.
How can I track Circle Pharma secondary market activity?
Caplight tracks bids, offers, and trades in Circle Pharma's shares on secondary markets.