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Series B Companies in Boston

Explore 70 series b startups based in Boston, United States. Access verified founder contact information and fundraising data.

Total Companies
70
Total Funding
$1.6B
Avg Funding
$65.5M
Industries
12

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Biotechnology
$175.0M
raised

Aktis Oncology is a biotechnology company that designs and develops novel class radiopharmaceuticals.

Sep 2024
Series B

Founder Contacts

30,000+ verified contacts

Analytics
$35.0M
raised

Catalog is a developer of a data conversion and storage platform used to offer the next generation of digital data archives.

Sep 2021
Series B

Founder Contacts

30,000+ verified contacts

Cloud Security
$17.0M
raised

The user-focused endpoint security platform for teams that Slack.

Sep 2021
Series B

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$56.0M
raised

Origin is a financial planning platform that manages compensation, benefits, and personal finances for employees.

Aug 2021
Series B

Founder Contacts

30,000+ verified contacts

Analytics
$30.0M
raised

ThreatX is a web application and API protection platform that enables enterprises to secure all their applications.

Aug 2022
Series B

Founder Contacts

30,000+ verified contacts

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E-Commerce
$45.0M
raised

NewStore is a software development company that provides Omnichannel-as-a-Service for retail brands.

Jul 2021
Series B

Founder Contacts

30,000+ verified contacts

Health Care
$75.0M
raised

Embark offers dog DNA testing that ends preventable diseases in dogs.

Jul 2021
Series B

Founder Contacts

30,000+ verified contacts

Biotechnology
$60.3M
raised

GRO Biosciences is a biotechnology company that develops a protein therapeutics technology to improve treatments across multiple diseases.

Jul 2024
Series B

Founder Contacts

30,000+ verified contacts

$260.0M
raised

Cardurion is a cardiovascular biotechnology company developing therapeutics for the treatment of heart failure and cardiovascular diseases.

Jul 2024
Series B

Founder Contacts

30,000+ verified contacts

E-Commerce
$40.0M
raised

Teikametrics is an AI-powered marketplace optimization platform helping brands grow on marketplaces like Amazon, Walmart, and TikTok.

Jul 2021
Series B

Founder Contacts

30,000+ verified contacts

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$20.0M
raised

NFlection Therapeutics is a biopharmaceutical company focusing on targeted treatments for rare diseases.

Jun 2022
Series B

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$13.0M
raised

An AI-enhanced platform for frontline leaders that helps health systems improve engagement, operational efficiency, and patient experience.

Jun 2023
Series B

Founder Contacts

30,000+ verified contacts

Biotechnology
$50.0M
raised

NuProbe is a cutting-edge genomics and molecular diagnostics company.

Jun 2022
Series B

Founder Contacts

30,000+ verified contacts

Health Care
$40.0M
raised

Connie Health empowers older Americans to make confident, worry-free healthcare decisions.

Jun 2026
Series B

Founder Contacts

30,000+ verified contacts

Information Technology

Vendr is aSaaS buying and management platform that helps companies find, buy, and manage their stack, money-back guaranteed.

Jun 2022
Series B

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Bookkeeping and Payroll
$17.4M
raised

RemotePass is a workforce management platform that helps companies onboard, manage, and pay contractors and employees.

May 2026
Series B

Founder Contacts

30,000+ verified contacts

Biopharma
$60.5M
raised

Invetx is a veterinary therapeutics company that develops protein-based therapeutics for the treatment of various animal diseases.

May 2022
Series B

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$11.0M
raised

Beacon Biosignals is a neurotechnology company that brings precision neuroscience into clinical trials and treatments.

Apr 2026
Series B

Founder Contacts

30,000+ verified contacts

Health Care

Profility offers support and training, process analysis, and software support description services, including requirements analysis.

Apr 2023
Series B

Founder Contacts

30,000+ verified contacts

Education
$20.0M
raised

Clasp is a mission-driven, venture-backed fintech revolutionizing how employers attract and retain critical talent in hard-to-hire fields.

Mar 2026
Series B

Founder Contacts

30,000+ verified contacts

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30,000+ verified emails
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Artificial Intelligence (AI)
$15.0M
raised

Activ Surgical is a digital surgery company focused on improving surgical efficiency, accuracy, patient outcomes, and accessibility.

Mar 2022
Series B

Founder Contacts

30,000+ verified contacts

AgTech
$50.0M
raised

Mori is a developer of a protective silk coating product that extends the shelf life of perishable foods.

Mar 2022
Series B

Founder Contacts

30,000+ verified contacts

Artificial Intelligence (AI)
$125.0M
raised

Code Metal is an AI-enabled platform providing verifiable code translation and optimization for edge development and code modernization.

Feb 2026
Series B

Founder Contacts

30,000+ verified contacts

$193.0M
raised

Aera Therapeutics is a biotechnology firm that employs its own protein nanoparticle (PNP) delivery platform.

Feb 2023
Series B

Founder Contacts

30,000+ verified contacts

$230.0M
raised

QuEra Computing is a provider of quantum computers that utilize neutral atom technology, aiming to innovate the field of quantum computing.

Feb 2025
Series B

Founder Contacts

30,000+ verified contacts

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