Fundraising Fox

Sie Ventures

Venture capitaloperating company · company profile

London · Pre-Seed–Seed · 7 people tracked

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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.

Stage
Pre-Seed–Seed
HQ
London, GB
Leads rounds
Follows
Instruments
Equity
Founded
2021
Last 12 months
1 investment
AUM
$19M
Tracked investments
33

Team · 7 people

from the firm's website & curated

Founder 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 companies

AI & 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 companies
50%
solo founders
6 of 12 mapped founding teams

Founding team size:solo founder×62 founders×53 founders×1

Accelerator rootsportfolio companies that came through a program

Entrepreneur First ×3

Investments · 33 tracked

founders shown can be your intro path

By year:2026 · 12025 · 12023 · 13 dated

Anansiwithanansi.comNov 2023

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

Apryl

Brings fertility benefits to the workplace.

Biographicagraphica.bioinJan 2026

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

Break The Lovebreakthelove.comin𝕏

Platform democratising access to recreational tennis.

Co-investorsCollide Capital

By Rotationbyrotation.com

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.

Cinogetcino.comin𝕏

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

Emmemm.coin

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

Fidesfides.technologyinacquired by 株式会社LegalOn Technologies

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 Dimensionfifthdimensionai.comin

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

Fit Collectivefitcollective.ioin

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

Frontman

Male grooming and skincare brand.

Grünfin

Estonia-based platform making values-based sustainable investing simple and accessible.

Co-investorsNorrsken VC

Ilofilof.techin𝕏

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

Jove

Insurtech building fit-for-purpose insurance products for drivers, freelancers and consultants.

Judewearejude.com

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

KetoSwiss

Developing a therapeutic product to mitigate neurological diseases such as migraines and brain aging.

Lemrocklemrock.comin

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

Lumalu.ma𝕏

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

Mirza

Startup on a mission to 'change the math' for caregiving.

Moticsmotics.ai
Muse Finance

SME financial services app providing loans, cash flow and invoice management tools.

Okko Healthokkohealth.com

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

Ovom Care

Fertility care startup that raised a €4.8M seed round.

Peripearperi-pear.com
Prenosticsprenostics.com

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 Globalre-fresh.globalin

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

Rosaly

Solution boosting employee financial wellbeing and reducing financial stress.

Shellworksshellworks.comin

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.

Space DOTSspace-dots.cominAug 2025

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

SPOKE

App bringing together music culture and mental health.

Your Junoyourjuno.coin

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

Yuty

Beauty/tech startup that raised £500K pre-seed funding.

Zonova

Develops proprietary Z-ROS antimicrobial technology to transform infection prevention in medical devices.

Exits · 1

IPOs and acquisitions across the tracked portfolio

Fidesacq. by 株式会社LegalOn Technologies

Portfolio news

latest coverage across their companies

Principals & officers · per Companies House

what is this? ⓘ
Ownership & control

Triin Linamagi75–100% 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 team

Triin Linamagi from Sie Ventures on building a capital platform for exceptional female founders

Life Self Mastery · Triin Linamagi

Images

Sie Ventures photo

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