Halcyon
AcceleratorWashington · Pre-Seed–Seed · 27 people tracked
Also known as Halceon
Investment thesis
Halcyon supports bold, impact-driven founders tackling major global challenges, providing a supportive environment centered on optimism and belief. Originally launched as an incubator with arts-based community programming, the organization shifted in 2021 toward backing impact-driven businesses and launched financing vehicles to support Halcyon founders and aligned ventures. Its accelerator model helps advance ventures in Climate, Health, and EquityTech beyond the idea stage, targeting companies with strong potential for scalable growth. The organization emphasizes building a global ecosystem of alumni and community members.
Source: firm website, verified Aug 3, 2026.
Team · 27 people
from the firm's website
Founder mafia
2 people who came through Halcyon went on to found or lead other companies.
What they invest in
from 8 of 22 portfolio companiesAI & Machine Learning ×3Impact & Social Good ×3Climate Tech ×2EdTech ×2AgTech ×1B2B Marketplaces ×1Biotech ×1Circular Economy ×1
HQs:United States×4Ethiopia×1Kenya×1
Portfolio companies · 22 tracked
alumni founders can tell you what the program is really likeBy year:2026 · 22020 · 12016 · 14 dated
Enlightapp provides G2KU (Guess2KnowU), a classroom engagement tool that lets educators ask students anonymous questions and have peers guess responses, surfacing insights about student experiences and preferences that traditional grades don't capture.
EdTechWest Fargo, US
Dieumerci Christel(Executive Officer, Director, Promoter)
Co-investorsTechstars
Develops affordable, long-life sand battery systems providing reliable electricity to underserved and off-grid communities.
Global technology company improving mental health and wellbeing of children and adolescents through digital phenotyping.
Smart water management system using machine learning and wireless smart sensors to optimize water usage.
Develops climate risk management products for financial intermediaries, including the ADAPTA Climate Score for assessing climate risk.
Develops testing procedures to evaluate bias, misinformation, and inaccuracy in large language models for AI safety.
Uses genetically improved insects to process organic waste in bioreactors, producing fertilizer, insect protein, and carbon bonds through a carbon-negative process.
Coral Vita operates land-based, high-tech coral farms to grow coral for reef restoration, selling restoration services and coral supply through a for-profit model rather than an NGO or government one.
AgTechClimate TechImpact & Social GoodSan Diego, US
Samuel Teicher(Executive Officer, Director)Alec Halpern(Executive Officer, Director)Sam Teicher(Co-Founder & Chief Reef Officer)inGator Halpern(Co-Founder & President)inSeth Teicher(Director)Will Hovey(Director)
Co-investors2050
Mobile education system for frontline workers and vulnerable populations that is mobile-first, low-tech, and low-bandwidth.
Offers vocational reskilling and financial services to disadvantaged individuals using Tradable Income-Based Securities, benefiting recipients, governments, and investors.
Nigeria-based climate venture building CoolCycle, a solar-powered cold-chain and market access platform.
Provides digital health devices enabling patients to conduct basic health examinations at home, starting with an electronic stethoscope for heart screenings.
Kubik operates a circular economy model that turns urban waste, including plastic, into low-carbon building materials for industries such as cement, working with cities and municipalities to improve waste management.
Circular EconomyClimate TechNew Materials
Kidus Asfaw(Founder & CEO)in
Co-investorsEndgame CapitalKazana FundMo AngelsSatganaUnruly Capital
Provides intelligent automation and IoT solutions for commercial and industrial refrigeration systems to reduce energy consumption and product losses.
BiotechInchon
Minyoung Soh(Director)Euihyung Woo(Director)Seungheon Nam(Executive Officer, Director)Jinho Seo(Director)Jooho Park(Executive Officer, Director)
Democratizes energy ownership in Latin America through a platform providing flexible solar loans and enabling individuals and communities to participate in energy production.
Applies electrostimulation technology with AI to control plant metabolism and improve crop yields.
Theorem LP prices and purchases loan volume across multiple originators, connecting borrowers with credit access, originators with capital, and investors with loan evaluation data.
AI & Machine LearningFintechSan Francisco, US
Abeer Agrawal(Founder/CTO)inHugh Edmundson(Founder/Managing Partner)in
Co-investorsY CombinatorKhosla VenturesSAIF
Theorem.dev provides verified software engineering through lf-lean, an AI-powered translation tool that converts formal mathematical proofs from Rocq to Lean significantly faster than manual translation.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareSan Francisco, US
Jason Gross(Founder)inRajashree Agrawal(Founder)in
Co-investorsY CombinatorKhosla VenturesSAIF
Incentivizes individuals and communities to recycle through a mobile app that connects users with recycling partners and offers rewards for proper waste disposal.
Trestle Labs builds Kibo, an AI-powered document transformation system that converts printed, handwritten, and digital content into searchable PDFs, editable files, translations, and audiobooks across many languages.
AI & Machine LearningEdTechImpact & Social Good
Provides affordable, confidential web-based psychological support from mental health professionals to underserved youth and women in Central America.
Wasoko is an e-commerce platform providing convenient and cost-effective access to products and services for shopkeepers and small businesses across Africa, offering same-day delivery and flexible payment options.
B2B MarketplacesE-commerceImpact & Social Good
Co-investors4Di Capital4DX VenturesAHL Venture PartnersAvenir Growth CapitalBreyer CapitalFlucas Ventures+5 more
Portfolio news
latest coverage across their companies
Theorem · radicaldatascience.wordpress.com · Jan 27, 2026
Theorem · radicaldatascience.wordpress.com · Jan 27, 2026
Coral Vita · forbes.com · Sep 18, 2025
Frequently asked questions
- How many investments has Halcyon made?
- Halcyon has 19 tracked investments.
- What stage does Halcyon invest at?
- Halcyon invests at the Pre-Seed, Seed stages.
- What sectors does Halcyon focus on?
- Halcyon focuses on AgTech, AI & Machine Learning, Circular Economy, Cleantech, Climate Tech, Digital Health, EdTech, Energy, Fintech, Healthtech, Impact & Social Good, Mental Health.
- Where is Halcyon located?
- Halcyon is headquartered in Washington, US.
- Does Halcyon lead rounds?
- Halcyon typically participates in rounds rather than leading them.
- Who does Halcyon co-invest with?
- Halcyon most often shares deals with 4Di Capital, 4DX Ventures, Breyer Capital, among 15 tracked co-investors.
Media · Podcasts & interviews
featuring the team[Shorter Version] Q&A with Halcyon's New President & CEO, Dan Barker!
Halcyon · Dan Barker
Q&A with Halcyon's New President & CEO, Dan Barker!
Halcyon · Dan Barker
Voices of Halcyon: Daniel Barker
Halcyon · Daniel Barker
Kate Goodall, Halcyon | AWS Public Sector Summit Online
SiliconANGLE theCUBE · Kate Goodall
EP 79: Kate Goodall, Co-Founder and CEO of Halcyon House
Molly Stillman · Kate Goodall
Meet Halcyon Alum Anaporka Adazabra (Farmio)
Halcyon
Images
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