Press kit

Two lengths, both cleared for publication. Please keep the capitalisation as written.

Onefive is a startup ecosystem platform that brings a secure fundraising dataroom, a verified startup profile, and a network of investors and mentors into a single workspace. Founded in 2026 and based in Paris, it is available in English and French.

Onefive is a startup ecosystem platform for founders raising pre-seed to Series A rounds. It brings together three things founders usually spread across separate tools: a fundraising dataroom with per-group permissions and per-file view tracking, a verified startup profile investors can review, and a network of investors and mentors matched by sector and stage. Founded in 2026 by Yannis Coulibaly and based in Paris, Onefive ships in English and French, handles documents in line with the GDPR, and is currently in pre-launch with access through a waitlist.

Product name

Onefive

Legal entity

YC STRATEGIC VENTURES, SAS

Founded

2026

Headquarters

229 rue Saint-Honoré, 75001 Paris, France

Trade register

RCS Paris 103 274 072

President

Yannis Coulibaly

Languages

English and French

Stage

Pre-launch, access through a waitlist

Website

www.onefive.app

Three capabilities, all shipped. Investor updates and a pipeline CRM are on the roadmap and are not available today.

• Fundraising dataroom

  Files are held in private storage and served through short-lived signed links, with permissions set per group and per category. View-only PDFs carry a watermark with the viewer's name, email, and timestamp, and every file records its own views.

• Verified startup profile

  A public profile covering team, market, traction, and current round, kept separate from the confidential dataroom so founders control exactly what is discoverable.

• Investor and mentor network

  Profiles are verified, and matching runs on sector, stage, and geography rather than on a purchased contact list.

Use this bio as written for HARO, Qwoted, and interview requests. It is the same person listed as president in the legal notice.

Yannis Coulibaly is the founder and president of Onefive, a Paris-based platform that puts a fundraising dataroom, a verified startup profile, and a network of investors and mentors in one workspace. He comments on European seed process: how founders share files, how long a raise actually takes, and which public 2025 figures (Atomico, PitchBook, Dealroom, DocSend) are safe to quote. Onefive is in pre-launch. He is not an investor and does not speak for a fund.

Topics he can speak to

• European seed and Series A process (medians, concentration, time-to-close)
• Fundraising datarooms and file-sharing hygiene for pre-seed teams
• Public 2025 Europe fundraising figures, always attributed to the publisher
• AngelList, Gust, and Foundersuite alternatives for European founders

Direct downloads. Please do not recolour, stretch, or add effects.

• Logo Onefive (SVG)vectorielDownload
• Logo Onefive (PNG)2048 × 469 pxDownload
• Symbole seul (PNG)892 × 1024 pxDownload

Every variant, in SVG and PNG, with avatars, social covers, colours, and usage rules, is on the brand kit page. Open the brand kit

• Write Onefive as one word with a capital O and a lowercase f. Not OneFive, not One Five, not ONEFIVE.
• The company behind the product is YC STRATEGIC VENTURES. Use Onefive when referring to the product or the platform.
• Onefive is a platform, not a fund. It does not invest and does not take a share of the rounds raised through it.

Sourced reference pages, not Onefive traction claims. Link the figure to the publisher named on the page.

• European fundraising benchmarks 2025

  Tables compiled from Atomico, PitchBook, Dealroom and DocSend.

• European startup funding tracker

  Curated announced European rounds. Every amount links to the company note or named press. CSV and embed under CC BY 4.0.

• Startup funding stages

  Pre-seed to IPO, with the same sources plus Carta and Crunchbase.

• Funding a startup in France

  Bourse French Tech, JEI, and where to find support. Figures checked against official pages.