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Series A Companies in Boston

Explore 136 series a startups based in Boston, United States. Access verified founder contact information and fundraising data.

Total Companies
136
Total Funding
$1.4B
Avg Funding
$54.6M
Industries
11

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Artificial Intelligence (AI)
$16.0M
raised

Ayble Health provides AI-powered digital care for health conditions, combining clinician guidance with patient support and symptom tracking.

Sep 2026
Series A

Founder Contacts

41,000+ verified contacts

$225.0M
raised

Solstice Oncology develops immuno-oncology therapies focused on treating and preventing cancer through targeted approaches.

Sep 2026
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$75.0M
raised

Neo Security is a cybersecurity company that develops an AI security platform for enterprises adopting agentic AI and AI-enabled software.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Marketplace
$5.0M
raised

InStockRx a marketplace for licensed pharmacies to buy and sell inventory from each other.

Jul 2026
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$25.0M
raised

AI-driven threat hunting platform.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

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$12.6M
raised

Anodyne Nanotech is a preclinical-stage biotech company that develops differentiated, transdermal forms of high-value drugs.

Jun 2026
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$30.0M
raised

Catena Labs incubate independent products spanning identity, communications, AI, and commerce.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

E-Commerce
$5.0M
raised

Stone & Skillet produces and sells muffins.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

$10.0M
raised

Vector helps B2B sales reps and SDRs generate pipeline by activating company's network avoiding cold prospecting and screaming into a void.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$200.0M
raised

Blitzy is a Generative AI software platform that aims to automate custom software development.

May 2026
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Biotechnology
$300.0M
raised

Beeline Medicines is a biotechnology company that identifies and provides precise treatments to autoimmune inflammatory disorders.

Apr 2026
Series A

Founder Contacts

41,000+ verified contacts

Computer
$11.5M
raised

Lambent is a Boston-based SaaS analytics company enabling data-driven real estate decisions at college and corporate campuses.

Mar 2026
Series A

Founder Contacts

41,000+ verified contacts

Therapeutics
$19.0M
raised

NexCure offers clinically intense therapies in outpatient, community settings, and other cutting-edge treatments.

Mar 2026
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$15.0M
raised

EnFi accelerate complex credit analysis and risk monitoring services.

Feb 2026
Series A

Founder Contacts

41,000+ verified contacts

Biotechnology
$52.0M
raised

Third Arc Bio is a biotech company developing multifunctional antibodies for inflammatory and immunology diseases.

Feb 2026
Series A

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Information Technology
$126K
raised

Autonomous Intelligence for Every Journey

Jan 2026
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$11.3M
raised

The revolutionary platform for decentralized AI collaborations - unlock data silos without data sharing.

Jan 2026
Series A

Founder Contacts

41,000+ verified contacts

Biotechnology
$80.0M
raised

Corsera Health develops preventive RNA interference medicines that reduces cardiovascular disease risk before long-term damage occurs.

Jan 2026
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$35.0M
raised

Neurable is a neurotechnology company focused on developing AI tools for brain signal translation and brain-computer interface technology.

Dec 2025
Series A

Founder Contacts

41,000+ verified contacts

Biotechnology
$20.0M
raised

Allonnia is an environmental biotechnology company focused on metals and mining, plastics and PFAS, plus other emerging contaminants.

Dec 2025
Series A

Founder Contacts

41,000+ verified contacts

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Get verified contact info for decision-makers at 136 funded startups

41,000+ verified emails
Unlimited exports
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Artificial Intelligence (AI)
$130.0M
raised

7AI provides an AI-driven cybersecurity platform that utilizes AI agents to manage the full lifecycle of security operations.

Dec 2025
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$41.5M
raised

AI Proteins is a biotechnology company that focuses on the de novo design and engineering of miniprotein therapeutics.

Nov 2025
Series A

Founder Contacts

41,000+ verified contacts

$8.0M
raised

Integrated mental health services for pregnant & postpartum patients.

Nov 2025
Series A

Founder Contacts

41,000+ verified contacts

Artificial Intelligence (AI)
$18.8M
raised

OpenHands operates as an open source agent for developers.

Nov 2025
Series A

Founder Contacts

41,000+ verified contacts

Agentic AI
$20.0M
raised

Agency AI helps to manage workflows of B2B Customer Success teams

Nov 2025
Series A

Founder Contacts

41,000+ verified contacts

Showing 1 to 25 of 136 companies

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