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Series A Companies in California

Explore 1,951 series a startups based in California, United States. Access verified founder contact information and fundraising data.

Total Companies
1,951
Total Funding
$1.3B
Avg Funding
$53.7M
Industries
15

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Artificial Intelligence (AI)

Sygaldry Technologies is a tech company building quantum-accelerated AI servers to exponentially speed up AI training and inference.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

$190K
raised

Revolutionizing industrial operations through AI-powered Digital Twin simulations.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Consulting

Finni Health is an MSO enabling ABA providers to start and grow their own in-network practices.

Mar 2024
Series A

Founder Contacts

30,000+ verified contacts

$11.6M
raised

Tachyon Therapeutics develops novel, selective compounds to improve the treatment of cancer.

Mar 2023
Series A

Founder Contacts

30,000+ verified contacts

Biotechnology

Renegade.bio provides rapid and cost-effective diagnostic testing for detection of novel infectious diseases.

Mar 2023
Series A

Founder Contacts

30,000+ verified contacts

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Artificial Intelligence (AI)
$15.0M
raised

Qurrent is an autonomous digital workforce company that provides digital workforces that execute complex back-office operations.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$200.0M
raised

Axiom develops artificial intelligence systems designed to solve complex mathematical problems and produce formally verified proofs.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Advanced Materials
$80.0M
raised

CarbonCapture is a climate tech company that develops direct air capture (DAC) machines to remove CO2 directly from the atmosphere.

Mar 2024
Series A

Founder Contacts

30,000+ verified contacts

$20.0M
raised

Rupa Health is a telehealth solution that makes it easier to practice root cause medicine.

Mar 2022
Series A

Founder Contacts

30,000+ verified contacts

Clean Energy
$20.0M
raised

GreenFire Energy delivers geothermal solutions that assure the availability of reliable, resilient, and scalable geothermal energy.

Mar 2022
Series A

Founder Contacts

30,000+ verified contacts

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Biopharma
$11.8M
raised

Amplifica is a preclinical stage biopharmaceutical company focused on developing novel treatments to address androgenic alopecia.

Mar 2022
Series A

Founder Contacts

30,000+ verified contacts

Aerospace
$35.0M
raised

Swarm Aero is an aerospace and defense company that develops large-scale unmanned aerial vehicle (UAV) swarms for defense and missions.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$54.0M
raised

AI for ERP Transformation

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Biopharma
$13.0M
raised

This company is a California-based biotechnology firm developing novel small molecule lipids, referred to as oxysterols.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$12.5M
raised

Nectir is a learning platform that allows educators to create customizable and FERPA-compliant AI assistants that live within the LMS.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

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Artificial Intelligence (AI)
$22.0M
raised

Incident response and threat hunting at the speed of thought. Find IP addresses and other IOCs in petabytes of logs in seconds.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$12.0M
raised

TestBox create AI-powered demo and POC environments with custom data that mirrors your prospect's business, closing deals faster.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Agentic AI
$125.0M
raised

Kai is an agentic AI platform that executes cybersecurity tasks, integrating multiple security processes into a single workflow.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$450.0M
raised

Rhoda AI is a tech company that develops a class of robot foundation models designed to bring general intelligence into the physical world.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

AI Infrastructure
$200.0M
raised

Eridu provides frontier networking solutions for AI, purpose-built to meet the demands of scale-out and scale-up networks.

Mar 2026
Series A

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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E-Commerce
$185K
raised

Acinap is a clothing store that offers a range of gifts and accessories with customized options.

Mar 2024
Series A

Founder Contacts

30,000+ verified contacts

Audio
$20.0M
raised

100ms is a live-video infrastructure startup that allows developers to build and deploy enterprise-class video applications in hours.

Mar 2022
Series A

Founder Contacts

30,000+ verified contacts

Business Intelligence
$14.0M
raised

PopSQL is a modern, collaborative SQL editor for teams.

Feb 2022
Series A

Founder Contacts

30,000+ verified contacts

$7.5M
raised

Quantum Art is the platform focused solely on photographers and their work.

Feb 2022
Series A

Founder Contacts

30,000+ verified contacts

Health Care
$18.0M
raised

Headlight is a mental health firm that aims to change the way mental health services are delivered.

Feb 2024
Series A

Founder Contacts

30,000+ verified contacts

Showing 726 to 750 of 1,951 companies

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