London · Pre-Seed–Seed · 7 people tracked
Find your way into Sie Ventures
4,640 people in our graph share verified history with the Sie Ventures team — schools, employers, funds. One of them is your warm intro.
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 & curated
Founder mafia
3 people who came through Sie Ventures went on to found or lead other companies.
What they invest in
from 25 of 35 portfolio companiesAI & Machine Learning ×9Digital Health ×6Fintech ×6Biotech ×5FemTech ×5SaaS ×4Circular Economy ×3Consumer ×3
HQs:United Kingdom×8Germany×2France×2United States×1
Who they back
founder profiles across 15 portfolio companiesFounding team size:solo founder×92 founders×53 founders×1
Where their founders studiedfrom 16 founders with education data
École nationale des ponts et chaussées ×2ENS Paris-Saclay ×2Imperial College London ×2Royal College of Art ×2University of Bristol ×2
What their founders studiedfrom 16 founders with field-of-study data
Business & Management ×4Computer Science ×4Design & Architecture ×3Engineering ×2Life Sciences ×2Mathematics & Statistics ×2
Where their founders worked beforefrom 17 founders with career history
Jumia Group ×2McKinsey & Company ×2
Accelerator rootsportfolio companies that came through a program
Investments · 35 tracked
founders shown can be your intro pathBy year:2026 · 22025 · 12023 · 22022 · 16 dated
Peripear is developing a wearable medical device that applies gentle warmth to the perineum during vaginal birth to reduce the risk of tearing, pain and episiotomy.
FemTechHardwareMedical Devices
Nina van Schaick(Midwife and Co-founder)inEviatar Natan(Co-Founder and CEO)in
Co-investorsHERmesaInnovate UKSyndicateRoom
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 VenturesUNIQA Ventures GmbH
Apryl (Progyny Global) offers a fertility benefits platform that connects employees with fertility experts, clinics, and treatments including IVF, egg and sperm freezing, surrogacy, adoption, and menopause management.
Digital HealthFemTechHR Tech
Co-investorsAFI VenturesAtlanticAuxxoJazzya InvestmentsMyelin VCVentech+4 more
Graphica applies foundational AI models to precision plant breeding, genetics and molecular biology, building plants and biological products.
AgTechAI & Machine LearningBiotechLondon, GB
Cecy Price(CEO)inDominic Hall(CTO)in
Co-investorsEntrepreneur FirstFaberFaber Capital SCR SANucleus CapitalSuperSeedCardumen Capital+4 more
Platform democratising access to recreational tennis.
Co-investorsCollide CapitalAntler
By Rotation is a fashion rental platform that allows consumers to rent designer clothing and lend or monetize their own wardrobes.
Circular EconomyConsumerMarketplaces
Eshita Kabra(Founder)in
Co-investorsCornerstone VCRedrice VenturesTrue.Cherry VenturesClosed Loop Partners
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
Dimension AI is a precedent-based SEC filing software that extracts and structures data verbatim from public EDGAR filings to draft, benchmark, and review documents such as annual reports, capital markets filings (S-1, 424(b)), and N-2 reports for registered funds.
AI & Machine LearningFintechLegalTech
Co-investorsAUTHENTIC VENTURESAbstract VenturesAscension VenturesFelicis VenturesLove VenturesMVP+4 more
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 provides a governance workflow tool that digitizes and documents corporate decision-making, including formal resolutions, approvals, meetings, task tracking, and document management with audit trails and e-signatures.
AI & Machine LearningEnterprise SoftwareLegalTechSaaS
Lisa Gradow(Founder)in
Co-investorsAlumni VenturesAuxxoIA VenturesLa FamigliaLGFTable Management
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 FirstAlbionVCJanuary VenturesSuperSeed
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 VenturesBerggruen Holdings
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
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 ManagementFinancière Saint JamesGalion.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
SME financial services app providing loans, cash flow and invoice management tools.
FintechLondon, GB
Co-investorsAngel AcademeKinled HoldingTechstars
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
Stephanie C.(Founder)in
)
Co-investorsAnglia Capital GroupDvH Ventures
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)in
Co-investorsSerpentine VenturesIndieBio
Rosaly offers a financial wellbeing platform that lets employees access earned wage advances and automates the handling of salary advances for HR teams.
FintechHR TechSaaS
Arbia SMITI(Founder)in
Co-investorsAUDEO VENTURESAuxxoClocktower VenturesFin CapitalHaymaker VenturesTreasury+1 more
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)inEdward 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 SpaceBoost VC
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)inAlexia de Broglie(Co-founder)in
Co-investorsDigital Currency GroupInreach VenturesMSMAlma AngelsMustard Seed Maze
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
FrontmanGrünfinJoveKetoSwissMirzaOvom CarePlastic PackagingSPOKEYutyZonova
Exits · 2
2 acquisitionsPortfolio news
latest coverage across their companies
Jude · wjhg.com · Aug 23, 2026
Fit Collective · vctavern.com · Jun 8, 2026
Fifth Dimension · sci-tech-today.com · May 12, 2026
Cino · thenextweb.com · May 8, 2026
Lemrock · inforcapital.com · Mar 15, 2026
Biographica · tech.eu · Jan 7, 2026
Emm · traded.co · Nov 20, 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 35 tracked investments, 2 of which have exited, including 3 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 Auxxo, Entrepreneur First, Faber, among 84 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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