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Series B Companies in California

Explore 889 series b startups based in California, United States. Access verified founder contact information and fundraising data.

Total Companies
889
Total Funding
$909.2M
Avg Funding
$36.4M
Industries
18

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Analytics

Luciq is the first Agentic Mobile Observability Platform, purpose-built to help enterprise teams deliver flawless app experiences at scale.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

Analytics
$36.0M
raised

Arkestro is a predictive procurement platform that utilizes AI, behavioral science, and machine learning to enhance procurement processes.

May 2025
Series B

Founder Contacts

30,000+ verified contacts

Biopharma
$712K
raised

Bionaut Labs revolutionizes the treatment of central nervous system disorders with its precision medicine treatment modality.

May 2024
Series B

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$50.0M
raised

Monaco provides an AI-native revenue platform for startups that replaces legacy CRM systems and separate sales tools.

May 2026
Series B

Founder Contacts

30,000+ verified contacts

Agentic AI
$125.0M
raised

Exaforce is a cybersecurity company that develops an agentic security operations and modern SIEM platform for enterprise environments.

May 2026
Series B

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Health Care
$26.0M
raised

9amHealth offers a simplified approach to whole body health, focusing on weight loss, diabetes management, and heart health.

May 2026
Series B

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)

Vapi is a voice AI platform that allows developers to build, test and deploy voice agents for phone calls and customer support.

May 2026
Series B

Founder Contacts

30,000+ verified contacts

Agentic AI
$25.0M
raised

Tidio offers an AI-powered customer service management platform.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

Apps

Miles is a startup that offers rewards for traveling, regardless of the mode of transportation.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

Biotechnology

Mango Materials produces biodegradable polymers from waste biogas that are economically competitive with conventional, oil-based plastics.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Aerospace
$275.0M
raised

Cowboy Space is a space technology company developing solar-powered orbital data centers for AI computing infrastructure.

May 2026
Series B

Founder Contacts

30,000+ verified contacts

Infrastructure
$18.0M
raised

Sharper Shape provides innovative solutions for infrastructure asset owners.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

Agriculture
$5.0M
raised

Full Harvest is a B2B marketplace for ugly and surplus produce that helps reduce food waste.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

Financial Services

LoanSnap is on a mission to improve every American's finances

May 2023
Series B

Founder Contacts

30,000+ verified contacts

Health Care

Osmind is the premier technology platform for breakthough mental health treatment and research.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Construction
$45.0M
raised

Dusty Robotics develops robot-powered tools for the modern construction workforce.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

Business Process Automation (BPA)

Luminai automates workflows by taking any multi-click process and making it one click.

Apr 2026
Series B

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$40.5M
raised

Patlytics provides AI-driven patent intelligence solutions to enhance research and efficiency.

Apr 2026
Series B

Founder Contacts

30,000+ verified contacts

$137.0M
raised

Sidewinder Therapeutics is a biotechnology company that offers life-saving therapies for cancer and rare diseases.

Apr 2026
Series B

Founder Contacts

30,000+ verified contacts

Cyber Security

SlashNext is a computer and network security company that specializes in cybersecurity, cyber-attack detection, and IT solutions.

Apr 2023
Series B

Founder Contacts

30,000+ verified contacts

Ready to Reach These Founders?

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30,000+ verified emails
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Analytics
$31.0M
raised

Unified Data Engineering and Analytics Engineering with the Data Automation Cloud

Apr 2022
Series B

Founder Contacts

30,000+ verified contacts

$70.0M
raised

Lightning Labs is building the next generation of decentralized, resilient financial infrastructure on top of the bitcoin blockchain.

Apr 2022
Series B

Founder Contacts

30,000+ verified contacts

3D Printing

Launcher is developing the world’s most efficient rocket to deliver small satellites to orbit.

Apr 2022
Series B

Founder Contacts

30,000+ verified contacts

Fertility
$25.0M
raised

Future Family provides women and couples with personal and affordable fertility care.

Apr 2022
Series B

Founder Contacts

30,000+ verified contacts

Coreshell Technologies is a nanotechnology company that is a developer of nanolayer coating technology for rechargeable batteries.

Apr 2026
Series B

Founder Contacts

30,000+ verified contacts

Showing 226 to 250 of 889 companies

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