Callosum
PrivateLast Round
Pre Seed
Feb 26, 2026
Total Funding Raised
$10.25M
Momentum
Top 10%
of companies Caplight tracks
Company Overview
Callosum is an AI infrastructure company that develops systems-level software enabling AI workloads to run efficiently across diverse chip architectures.
Sector
AI, Data & Cloud Infrastructure
Verticals
AI Training Infrastructure, Cloud Infrastructure, Computing Hardware
Business Model
B2B
Customer Profile
Subscription SaaS, Services & Consulting
AI Layer
Infrastructure
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Callosum Comparables
Compare Callosum with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Heterocore | 85% | |
| Gimlet Labs | 78% | |
| Exostellar Inc. | 77% | |
Callosum Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Pre Seed | Feb 26, 2026 |
Callosum Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Advanced Research and Invention Agency | Pre Seed |
| Plural | Pre Seed |
| Entrepreneurs First | Pre Seed |
| Plural | Pre Seed |
Market signals
Structured signals derived from secondary market and firmographic data.
- Feb 26, 2026
$10.25M round led by Plural
Callosum Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about Callosum's valuation, stock price, and market status.