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Team Portfolio Raise Champions Essays

F4/OTB Ventures/Activity

OTB Ventures Activity

Every public signal F4 has attached to this firm, with sources and cross-entity links.

Types

Time range

Exit

Portfolio company Minit, a process-mining company, was acquired by Microsoft.

Minit

MinitOTB Ventures

Added recently

Exit

Portfolio company BabbleLabs, a speech-enhancement company, was acquired by Cisco.

BabbleLabs

BabbleLabsOTB Ventures

Added recently

Investment

Participated in Ingenix.ai's €9 million seed round, developer of a generative AI model for simulating clinical drug trials.

Ingenix.ai

Ingenix.ai OTB Ventures

Added recently

Investment

Co-led Plumerai's $8.7 million Series A to bring ultra-efficient vision AI to edge devices.

Plumerai

Plumerai OTB Ventures

Added recently

Team Change

Welcomed General Rajmund T. Andrzejczak, former Chief of the General Staff of the Polish Armed Forces, as a Strategic Adviser for defense-tech investments.

General Rajmund T. Andrzejczak joins as Strategic Adviser

Added recently

4 investments· OCT 2025 – SEP 2026Show all

Investment

Co-led Arlequin AI's €28 million Series A alongside redalpine, backing topological neural network AI for critical decision-making.

Arlequin AI

Arlequin AI OTB Ventures

arlq.aiSEP 2026

SEP 2026

Investment

Participated in Alta Ares's €50 million Series A, led by Air Street Capital, to scale an AI-native air defense stack.

Alta Ares

Alta Ares OTB Ventures

altaares.comJUN 9, 2026

JUN 9, 2026

Investment

Co-led Waiv's $33 million Series A alongside Alpha Intelligence Capital, backing AI-native precision oncology diagnostics.

Waiv

Waiv OTB Ventures

waiv.comMAR 12, 2026

MAR 12, 2026

Investment

Co-led MatrixSpace's $20 million Series B alongside The Raptor Group, backing AI-native portable radar systems.

MatrixSpace

MatrixSpaceOTB Ventures

matrixspace.comOCT 15, 2025

OCT 15, 2025

Team Change

Opened a Luxembourg office and hired Jeremy Teboul, Estelle Godard, and Kateryna Lopatynska from Promus Ventures' Orbital fund team.

OTB Ventures opens Luxembourg office, hires three from Promus Ventures

tech.euMAR 14, 2025

MAR 14, 2025

OTB Ventures | Activity | F4