Quintessent Inc.
PrivateLast Round
Series A
Aug 24, 2026
Total Funding Raised
$54.23M
Momentum
Top 1%
of companies Caplight tracks
Company Overview
Quintessent Inc. operates in AI, Data & Cloud Infrastructure and is based in Santa Barbara, California. Its latest recorded funding round was a Series A round in August 2026.
Quintessent Inc. is a semiconductor company that develops optical connectivity solutions to scale computing and artificial intelligence by integrating quantum dot lasers with silicon photonic integrated circuits.
Sector
AI, Data & Cloud Infrastructure
Verticals
Semiconductors, Cloud Infrastructure, AI Training Infrastructure, Computing Hardware
Business Model
B2B
Customer Profile
Hardware Sales
AI Layer
Infrastructure
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Quintessent Inc. Comparables
Compare Quintessent Inc. with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Scintil Photonics | 91% | |
| Xscape Photonics | 89% | |
| Avicena | 88% |
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Quintessent Inc. Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Series A | Aug 24, 2026 | ||||
| Seed | Mar 14, 2024 | ||||
| Grant | Dec 1, 2021 | ||||
| Grant | Aug 13, 2021 | ||||
| Grant | May 1, 2020 | ||||
Seed | Aug 22, 2019 |
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Key People
Founding team and executive leadership
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Quintessent Inc. Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| InterVest | Series A |
| Sierra Ventures | Series A, Seed |
| M Ventures | Series A, Seed |
| Foothill Ventures | Series A, Seed |
| Osage University Partners | Series A, Seed |
| Entrada Ventures | Seed |
| Susquehanna International Group | Series A |
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Market signals
Structured signals derived from secondary market and firmographic data.
- Aug 24, 2026
$40M round led by Cycle Capital.
- Aug 23, 2026
Grew 18% QoQ, from 22 to 26 employees.
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Recent news
Latest coverage and updates
- hiresSep 8, 2026
Quintessent has hired Ramesh Senthinathan, Ph.D., as vice president of system engineering to lead development of its optical interconnect products in California.
- hiresSep 8, 2026
Quintessent hired Manar Mohamed as director of business development and marketing to lead commercial growth and expand the market for its optical connectivity products, announced in California on Sep 8th '26.
- is_developingAug 25, 2026
Quintessent plans to use new capital to further develop its comb laser, including sampling, reliability and qualification work, and manufacturing ramp-up, as it transitions toward a product-focused company on Aug 25th '26.
- integrates_withAug 25, 2026
Quintessent integrates with Tower Semiconductor Ltd. through earlier heterogeneous integration work involving Tower Semiconductor Ltd.'s PH18DB foundry silicon photonics process, while its QCOMB-1310-08-08-200-EVK quantum-dot comb-laser evaluation kit samples to customers for system test-bed integration.
- is_developingAug 25, 2026
Quintessent is looking to develop semiconductor optical amplifiers (SOAs) to boost weak signals in fiber-optic data links, alongside an optical engine for pluggable interconnect modules for AI data centers.
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Quintessent Inc. Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
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Frequently Asked Questions
Common questions about Quintessent Inc.'s valuation, stock price, and market status.
Is Quintessent Inc. a public or private company?
Quintessent Inc. is a private company.
What is the current stock price of Quintessent Inc.?
Quintessent Inc. is a private company, so its shares have no public market price. Caplight tracks Quintessent Inc.'s secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Quintessent Inc. worth (valuation)?
Valuation information for Quintessent Inc. is not publicly available.
Can I buy Quintessent Inc. stock?
Quintessent Inc. shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Quintessent Inc.'s last funding round?
Quintessent Inc.'s most recent funding round was Series A on August 24, 2026.
Who are the main investors in Quintessent Inc.?
Key investors in Quintessent Inc. include Sierra Ventures, Foothill Ventures, Osage University Partners, Entrada Ventures, Cycle Capital.
Will Quintessent Inc. IPO soon?
No public IPO plans have been announced for Quintessent Inc..
How can I track Quintessent Inc. secondary market activity?
Caplight tracks bids, offers, and trades in Quintessent Inc.'s shares on secondary markets.