/Investor DB

Osney Capital — Full Portfolio

17 tracked investments · listed companies and verified rows first

Aisyaisy.aiinSeed · Feb 2026 · $2.3M

aisy builds an attacker-informed view of a customer's environment by connecting findings, assets, code, and engineering activity across a security team's existing tools, then uses that context to prioritize, triage, test, and fix vulnerabilities.

AI & Machine LearningCybersecuritySaaS

Co-investorsFlying Fish Ventures

ESProfileresprofiler.comin

ESProfiler helps security leaders understand, optimize, and maximize their security technology investments by mapping capabilities across frameworks, identifying gaps and overlaps, and reducing waste.

AI & Machine LearningCybersecurityEnterprise SoftwareSaaSManchester, GB

Louis Holt(CEO & Founder)Louis H(Founder)Joe Pavitt(Chief Product Officer)inJohn McCann(Chief Revenue Officer)in

Co-investorsNauta Capital

Mindgardmindgard.aiin

Mindgard provides AI security solutions that help enterprises identify, assess, and mitigate threats across AI models, agents, and applications throughout the AI lifecycle.

AI & Machine LearningCybersecurityEnterprise SoftwareBoston, US

Dr. Peter GarraghaninJames Brear(CEO)inAaron Portnoy(Head of Research)inRich Smith(Offensive Security Lead)inNeeraj Suri(Founder)Peter Garraghan(Founder)

Co-investors.406 VenturesAtlantic Bridge VenturesIQ CapitalAlbum VCKarma VenturesLakestar

OnSecurityonsecurity.ioin𝕏

OnSecurity provides AI red teaming and penetration testing services to identify vulnerabilities in large language models and AI-powered applications.

AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSaaS

Conor O'Neill(Chief Executive Officer)Duncan Butchart(Chief Revenue Officer)inAdam Luxford(Chief Operating Officer)in

Co-investorsGresham House Ventures

Osspreyossprey.comin𝕏Pre-Seed · Apr 2026

Ossprey detects supply chain attacks and malicious dependencies by monitoring code behavior at runtime, identifying packages that scan clean but behave maliciously.

AI & Machine LearningCybersecurityDeveloper Tools

Adam Mountain(Founder)in

Co-investorsEpisode1Octopus Ventures

Overmindovermind.techin𝕏Feb 2026

Overmind is a platform that simulates the live production environment to show engineers the blast radius, dependencies, and risks of infrastructure changes before a pull request is merged.

Cloud ComputingDeveloper ToolsSaaS

Dylan Ratcliffe(Founder)inPavel Ronin(Founder)Yul Bahat(Founder)

Co-investorsMotive ForceOperator Collective14Peaks CapitalAntlerKortschak Investments L.P.Portfolio Ventures+1 more

Ployploy.aiin𝕏

Ploy builds account plans for sales and marketing teams targeting high-intent accounts through coordinated multi-contact email outreach.

AI & Machine LearningEnterprise SoftwareMarketing TechSaaSSan Francisco, US

Bryant Chou(Founder)in

Co-investorsHyphen CapitalStreamlined VenturesY CombinatorFirst Round Capital

Ployjoinploy.com

Ploy is an identity governance platform that automates joiner-mover-leaver processes, access reviews, permission removal, and audit evidence collection, using an AI agent called Luna.

AI & Machine LearningCybersecuritySaaS

Co-investorsFirst Round CapitalSuperSeedY Combinator

Refuterefute.com

Refute detects and responds to disinformation campaigns on behalf of organizations using quantitative data analysis and threat modeling across multiple channels.

AI & Machine LearningCybersecurityEnterprise Software

Tom Garnett(CEO & Co-Founder)inVlad Galu(CTO & Co-Founder)in

Co-investorsAmadeus Capital PartnersEpisode1Playfair Capital

RevEngreveng.ai

RevEng.AI builds a verification platform for software supply chain integrity using AI models trained on binary analysis to identify vulnerabilities, malware, and security threats in released software in production.

AI & Machine LearningCybersecurityDeveloper Tools

James Patrick-Evans(CEO and Founder)in

Co-investorsEpisode1In-Q-TelIQ Capital

Seedataseedata.io

Enrico Faccioli(Founder)in

Co-investorsAviso VenturesAxeleo CapitalOctopus Ventures

Sitehopsitehop.comFeb 2024

Sitehop provides encryption technology designed for real-time data protection that prioritizes speed and quantum-readiness.

CybersecurityDeep TechEnterprise SoftwareHardwareQuantum Computing

Melissa Chambers(Co-Founder and CEO)inBen Harper(Co-Founder and CTO)in

Co-investorsAmadeus Capital PartnersManta Ray VenturesNorthern GritstoneMercia Ventures

Strand Intelligencestrandintelligence.comin𝕏Seed · Jun 2026 · $1M

The company builds tools for incident response and digital forensics professionals.

AI & Machine LearningCybersecuritySaaS

William Poole(Co-Founder & Chief Executive Officer)in

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Aviel TechnologiesHuntbaseSeDataStrand

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.