
Cédric Tempestini
Serial digital entrepreneur, founder of the UMento private community and the Fast-Track Investor program. He picks the deals where the asymmetry works in your favor.
InvestorX invests in outstanding early-stage tech startups, sourced from the most prestigious and profitable incubators, typically alongside a professional lead investor.
Our expertise, experience and processes enable us to detect value where it is found: in the best emerging tech startups around the world.
We are committed to supporting talented entrepreneurs with a clear vision of the future. We only back founders whose vision we fully share: that alignment is the foundation of a lasting partnership.
We bring resources to the table, as well as extensive experience of the tech market, so that our startups can perpetuate their activity and become global successes.

Oleo turns wood waste and almond shells into oil. Its industrial customers will be able to use this oil in existing refineries to produce sustainable aviation fuel (SAF). The process uses microwaves to turn plant waste into sugars, then a yeast consumes those sugars and produces oil in a fermentation tank. Oleo licenses its technology to the industrial partners that finance and operate the plants. Why we invested: a team that knows the processes and operations, a feedstock made from waste, and a model that lets the same technology be deployed with several industrial partners.
www.oleo.earthCallbook AI is an AI-operated collections agency. It finds hard-to-reach borrowers, negotiates the payment plans authorized by the lender and follows up on commitments, by phone and messaging. Banks and fintechs entrust it with part of their portfolios, starting with loans more than 60 days past due, while the receivables stay with the lender. The company already serves clients in Colombia, Mexico, Honduras and Panama, and is preparing its expansion into the United States, starting with Florida.
www.callbook.ai
MassMag is building a US production line for permanent magnets made from recycled materials, including motors from end-of-life vehicles. These magnets go into drones, robots and industrial motors. The company combines AI-assisted sorting, powder preparation and rapid sintering to deliver small, custom production runs. Its first market is US manufacturers that need a controlled supply origin and short lead times, notably for defense contracts affected by upcoming sourcing restrictions. The next milestone is to move from gram-scale prototypes to repeatable production.
massmagnetics.com"Hi Steve, just received the funds! Very glad to have your team onboard and we've already benefited greatly from your network. We'll keep you posted on our next product releases!"
"The investment process with InvestorX was very smooth! […] It was very reassuring. They made us want to work together because they are talking to entrepreneurs who understand everything involved in starting a tech company."

Serial digital entrepreneur, founder of the UMento private community and the Fast-Track Investor program. He picks the deals where the asymmetry works in your favor.

BNP Paribas (tech team), Natixis, then head of US investment bank Stifel's French branch. Multiple IPOs and listed-company M&A deals to his name. Founder of advisory firm i5AC, board member of two listed companies. He sources deals from the incubators, on site, and runs the first screen on every selection.