Harmonic

Harmonic are forging the world's most advanced mathematical reasoning engine.

Harmonic has a big mission: to create mathematical superintelligence (MSI). MSI is artificial intelligence with mathematical capabilities superior to that of humans, and we believe its development will dramatically accelerate progress in quantitative domains including science and engineering.

Generative AI

Investment Total
Blossom invested in Harmonic’s $75M Series A alongside Sequoia Capital

More Series A investments

Freshly is a direct-to-consumer brand focused on natural cosmetics. After starting in Spain, Freshly has expanded to several other geos, and become an omni-channel company opening flagship retail locations in London, Madrid and Barcelona.

Consumer / Ecommerce

Picture of the Freshly team
  1. Country:
    Spain
  2. Sector: 
    Ecommerce
  3. DAte of partnership: 
    Nov 2021
Blossom led Freshly's $21.8M Series A round.
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Collective enables independent freelancers to team up by mutualizing skills, networks and work methodology in a quest to enable each other to achieve more as a group vs. individually.

SaaS / HR

Team photo of Collective
  1. Country:
    France
  2. Sector: 
    Enterprise SaaS
  3. DAte of partnership: 
    Dec 2021
Blossom led Collective's $8M Seed round.
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Checkout’s mission is to build the future of commerce by building by a full stack technology that offers access to a payment gateway, advanced risk and fraud monitoring tools, a cutting-edge processor and the relevant acquirers, all in unified payments solution.

Infrastructure / Fintech

Guillaume Pousaz profile image from Checkout.com
  1. Country:
    UK
  2. Sector: 
    Financial Services
  3. DAte of partnership: 
    Apr 2019
Blossom invested in Checkout’s $230M Series A alongside DST Global and Insight Partners. Checkout has since gone on to raise their $150M Series B, $450M Series C and $1B Series D.
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Kadmos is revolutionizing salary payments for migrant workers. Kadmos has developed a payroll platform for companies that employ migrant workers which allows them to distribute pay to e-wallet accounts controlled by the worker.

Fintech / SaaS

Picture of the Kadmos team
  1. Country:
    Germany
  2. Sector: 
    Fintech
  3. DAte of partnership: 
    Jun 2022
Blossom led Kadmos' $31.9M Series A round. Acquired in June 2025 by NYK.
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Vespa.ai provides an AI-based search platform that allows applications leveraging AI and data online to store, search, and apply unlimited quantities of data to meet their users’ needs in real time.

Infrastructure

  1. Country:
    Norway
  2. Sector: 
    Infrastructure
  3. DAte of partnership: 
    Oct 2023
Blossom led Vespa.ai’s $31M Series A round.
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TheyDo has created a Journey Management platform to connect people, processes, and products and turn them into opportunities for CX improvements across a company's customer journey.

SaaS / Collaboration

TheyDo Founders
  1. Country:
    Amsterdam
  2. Sector: 
    Enterprise SaaS
  3. DAte of partnership: 
    Dec 2022
Blossom led TheyDo's $12.7M Series A round. TheyDo has since raised an additional $34M.
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