Organization · Angel Group
AJ2
AJ2 is an angel investing vehicle focused on deep tech investments, founded by brothers Adrien and Julien Lepleux. Based in the United States, it supports unconventional founders in sectors like energy, space, and healthcare.
Overview
What AJ2 does
What AJ2 is
AJ2 is an angel investing vehicle focused on deep tech investments, founded by brothers Adrien and Julien Lepleux. Based in the United States, it supports unconventional founders in sectors like energy, space, and healthcare.
How it participates in the startup ecosystem
The current public profile supports funder capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Angel Group
- Structured capabilities
- Funder
- Last reviewed
- May 1, 2026
Official channels
Find AJ2 elsewhere
Open the official website or a supported primary organization account.
Capability profile
AJ2 as a funder
Investment thesis
AJ2 backs unconventional founders who challenge common narratives in deep tech and related sectors, providing support through their networks.
Focus narrative
AJ2 invests in sectors related to technological revolutions, including energy generation, space industrialization, applied robotics, new-generation manufacturing, personalized healthcare, and climate adaptation. The organization emphasizes backing innovative founders and providing support through their extensive networks.
Value beyond capital
AJ2 provides value to its portfolio companies by leveraging the extensive networks and operational experience of its partners, helping founders navigate challenges and access resources that can accelerate their growth.
Focus and fit
- Stages
- Angel · Pre-seed · Seed
- Regions
- United States · Global
Availability
- Currently deploying
- Not published
Portfolio and track record
Portfolio context
Notable portfolio companies include: Firestorm: Focuses on expeditionary manufacturing and unmanned aerial systems (UAS). Catalyx: Develops unmanned space labs and re-entry capsules. MoldCo: Works on healthcare solutions designed to withstand global challenges. Exodys: Specializes in closed-loop nuclear fuel systems utilizing molten-salt technology. Sapient Energy: Offers a digitization and optimization platform for energy.
Common questions
What to know about AJ2
Upseed classifies AJ2 under the Angel Group organization type. Its current public profile includes funder capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
May 1, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.