London · Pre-Seed–Seed · 7 people tracked
Investment thesis
Sie Ventures aims to close the funding gap for female founders by backing early-stage, women-led startups in the UK and Europe. It invests through the £15M Arãya Sie Fund (a partnership with Arãya Ventures) and co-invests via a curated network of 150+ accredited angels. Its focus spans AI, deeptech, fintech, healthcare, sustainability, femtech, insurtech and B2B SaaS, targeting diverse teams solving problems in how people work, manage health, grow wealth and live sustainably. Beyond capital, Sie supports founders through structured programs (Sie Foundations and Sie Catalyst) providing access to network, education and investor introductions across their fundraising journey.
Source: firm website, verified Aug 3, 2026.
Team · 7 people
from the firm's website & curatedFounder mafia
2 people who came through Sie Ventures went on to found or lead other companies.
What they invest in
from 18 of 33 portfolio companiesAI & Machine Learning ×7Biotech ×5Digital Health ×4Circular Economy ×3Consumer ×3FemTech ×3Fintech ×3SaaS ×3
HQs:United Kingdom×6Germany×1France×1
Who they back
founder profiles across 12 portfolio companiesFounding team size:solo founder×62 founders×53 founders×1
Accelerator rootsportfolio companies that came through a program
Investments · 33 tracked
founders shown can be your intro pathBy year:2026 · 12025 · 12023 · 13 dated
Anansi is an insurance-driven delivery platform for last-mile logistics that combines regulated insurance, automated invoice monitoring, and risk insights in one system.
E-commerceInsurTechLogistics & Supply ChainSaaS
Co-investorsGuinness VenturesInsurTechMundi VenturesOctopus VenturesOutrun Ventures
Brings fertility benefits to the workplace.
Biographica (Graphica) uses multi-modal machine learning and high-throughput sequencing to identify and prioritize genetic targets for crop gene-editing, working with trait developers to design effective edits.
AgTechAI & Machine LearningBiotechLondon, GB
Cecy Price(CEO)inDominic Hall(CTO)in
Co-investorsEntrepreneur FirstFaberFaber Capital SCR SASuperSeedCardumen CapitalChalfen Ventures+4 more
Platform democratising access to recreational tennis.
Co-investorsCollide Capital
By Rotation is a fashion rental platform that allows consumers to rent designer clothing and lend or monetize their own wardrobes.
Circular EconomyConsumerMarketplaces
Co-investorsCornerstone VCRedrice VenturesTrue.
Cino provides a shared virtual card solution that allows groups to automatically split expenses among members based on customizable ratios, with transactions processed through Apple Pay or Google Pay.
Fintech
Co-investorsBalderton CapitalConnect VenturesConnect VenturesHeartfelt CapitalTera Ventures
Emm develops a medical-grade silicone menstrual cup embedded with ultra-thin sensors that tracks cycle metrics such as flow, duration, and frequency to give users personalised insights into their menstrual health.
Digital HealthFemTechHardware
Jenny Button(Founder)in
Co-investorsBlue Lion GlobalLunar VenturesStart CodonWormhole CapitalAlumni Ventures
Fides offers a corporate governance platform that centralizes company data, deadlines, and documents across legal entities and governing bodies for entity and shareholding management.
AI & Machine LearningLegalTechSaaS
Lisa Gradow(Founder)in
Co-investorsAuxxoLa Famiglia
Fifth Dimension AI is a decision intelligence platform for real-assets investors and managers that connects to systems like Yardi, Argus, Dealpath, and SharePoint to automate deal screening, lease abstraction, due diligence, and portfolio risk monitoring.
AI & Machine LearningFintechPropTech
Johnny Morris(Founder)in
Co-investorsAnthemis VentureLove VenturesMMC VenturesPrudenceTwin Path VenturesAFG Partners+2 more
Maeve is an AI assistant for fashion retailers that analyzes product data from multiple sources—including Shopify, PLM systems, reviews, and customer service tools—to optimize decisions around pricing, sizing, returns, and range planning.
AI & Machine LearningRetail TechLondon, GB
Phoebe Gormley(CEO)in
Co-investorsEntrepreneur FirstSuperSeed
Male grooming and skincare brand.
Estonia-based platform making values-based sustainable investing simple and accessible.
Co-investorsNorrsken VC
iLoF operates a cloud-based library of optical fingerprints built with photonics and AI, offering a non-invasive, blood-based screening test that stratifies patients for clinical trials.
AI & Machine LearningBiotechDigital HealthLondon, GB
Co-investorsFaberLince CapitalLunar Ventures
Insurtech building fit-for-purpose insurance products for drivers, freelancers and consultants.
Jude manufactures CoreCTRL, a dietary supplement formulated to support bladder health through targeted botanical ingredients, probiotics, and vitamins for daily wellness.
ConsumerDirect to ConsumerFemTechWellness & Fitness
Co-investorsEka VenturesJoyance PartnersOnstageSamos Investments
Developing a therapeutic product to mitigate neurological diseases such as migraines and brain aging.
Lemrock provides e-commerce integrations that deploy across the open web and search LLMs, connecting a network of onboarded merchants.
AdTechAI & Machine LearningE-commerceMarketing TechParis, FR
Roxane Laigle(CEO)inClément Nguyen(CTO)inSasha Collin(CPO)in
Co-investorsAgoranovEntrepreneur FirstSonorcapTranspose Platform ManagementGalion.exe
lu.ma is a platform for creating event pages, inviting attendees, and selling tickets for events.
Marketplaces
Dan Liu(Founder)Victor Pontis(Founder)in
Co-investorsAir Street CapitalAtelierBonfire VenturesExceptional CapitalIOSG VenturesLongJump Ventures+8 more
Startup on a mission to 'change the math' for caregiving.
SME financial services app providing loans, cash flow and invoice management tools.
OKKO Health develops smartphone and tablet apps that measure vision through games built on vision science, for use in clinical practice, scientific research, and drug and device R&D.
AI & Machine LearningDigital HealthHealthtechMedical Devices
Co-investorsAnglia Capital GroupDvH Ventures
Fertility care startup that raised a €4.8M seed round.
Prenostics develops a blood test to detect the earliest stages of cancer (stages 0-2), earlier than current methods, aiming to enable curative treatment.
BiotechDigital HealthHealthtech
Sarah Blagden(Founder & CSO)
Co-investorsPace Ventures
Re-Fresh Global pioneers textile waste recycling solutions using biotechnology to transform discarded textiles into new, sustainable resources.
BiotechCircular EconomyCleantechNew MaterialsBerlin, DE
Urte Claudia Zahn(CEO)Revital Nadiv(COP & Co-Founder)
Co-investorsSerpentine VenturesIndieBio
Solution boosting employee financial wellbeing and reducing financial stress.
Shellworks develops VIVOMER, a compostable material made by collaborating with microorganisms that produce natural polymers, designed to perform like plastic but break down without leaving waste.
BiotechCircular EconomyClimate TechNew MaterialsLondon
Insiya Jafferjee(Co-founder)inAmir Afshar(Co-founder)Edward Jones(Director)
BoardFelix Mounier(Director)
Co-investorsEnvestorsFounder CollectiveTrue.
SKY-I is a platform that aggregates fragmented space environmental data into a single system, offering 3D mapping of orbital conditions, satellite positions, and environmental hazards from VLEO to cislunar space.
Deep TechSaaSSpace TechWoking
Bianca Cefalo(Executive Officer, Director)
Co-investors7percent VenturesBlue Wire CapitalFemale FoundersOxford Investment Opportunity Network (OION)Seraphim Space
App bringing together music culture and mental health.
Your Juno is a financial education platform designed for women and non-binary people, offering tools and knowledge to help users build wealth and confidence in financial decision-making.
ConsumerEdTechFemTechFintechLondon, GB
Margot de Broglie(Co-founder)Alexia de Broglie(Co-founder)in
Co-investorsDigital Currency GroupInreach VenturesMSM
Beauty/tech startup that raised £500K pre-seed funding.
Develops proprietary Z-ROS antimicrobial technology to transform infection prevention in medical devices.
Exits · 1
IPOs and acquisitions across the tracked portfolioFidesacq. by 株式会社LegalOn Technologies
Portfolio news
latest coverage across their companies
Jude · wjhg.com · Aug 23, 2026
Fifth Dimension · sci-tech-today.com · May 12, 2026
Lemrock · inforcapital.com · Mar 15, 2026
Biographica · tech.eu · Jan 7, 2026
Emm · traded.co · Nov 20, 2025
Space DOTS · techfundingnews.com · Sep 9, 2025
Principals & officers · per Companies House
what is this? ⓘTriin Linamagi — 75–100% of shares, 75–100% of voting rights
Frequently asked questions
- How many investments has Sie Ventures made?
- Sie Ventures has 33 tracked investments, 1 of which have exited via acquisition or IPO, including 2 dated in the last 24 months.
- What stage does Sie Ventures invest at?
- Sie Ventures invests at the Pre-Seed, Seed stages.
- What sectors does Sie Ventures focus on?
- Sie Ventures focuses on AI & Machine Learning, Climate Tech, Deep Tech, FemTech, Fintech, Healthtech, Impact & Social Good, InsurTech, SaaS, Sector Agnostic.
- Where is Sie Ventures located?
- Sie Ventures is headquartered in London, GB.
- Does Sie Ventures lead rounds?
- Sie Ventures typically participates in rounds rather than leading them.
- Who does Sie Ventures co-invest with?
- Sie Ventures most often shares deals with Entrepreneur First, Faber, Lunar Ventures, among 68 tracked co-investors.
Media · Podcasts & interviews
featuring the teamTriin Linamagi from Sie Ventures on building a capital platform for exceptional female founders
Life Self Mastery · Triin Linamagi
Images
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