Adjacent | Activity | F4

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Team Portfolio Raise Champions Essays

F4/Adjacent/Activity

Adjacent Activity

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

Types

Time range

Podcast

Founder Nico Wittenborn discussed the mobile-first subscription app opportunity on the Subclub podcast.

Nico Wittenborn on Subclub: The Trillion-Dollar Subscription App Opportunity

Added recently

Investment

Returning investor in Ostrom's €20M Series B led by Eneco Ventures, bringing total funding to over €40M.

Ostrom

Ostrom Adjacent

ostrom.deJUN 20, 2025

JUN 20, 2025

Investment

Participated as a returning investor in RevenueCat's $50M Series C to expand infrastructure for consumer software monetization.

RevenueCat

RevenueCat Adjacent

businesswire.comMAY 22, 2025

MAY 22, 2025

Essay

Nico Wittenborn published a 5-year retrospective on Adjacent's consumer-subscription thesis: global reach, high margins, and recurring revenue.

Five Years of Exploring the Adjacent

medium.comNOV 1, 2024

NOV 1, 2024

Investment

Participated in Infinite Machine's $9.3M seed round for personal electric vehicles, led by Andreessen Horowitz's American Dynamism fund.

Infinite Machine

Infinite Machine Adjacent

infinitemachine.comOCT 29, 2024

OCT 29, 2024

Exit

Portfolio company BeReal was acquired by mobile publisher Voodoo for €500M.

Bereal

Bereal Adjacent

techcrunch.comJUN 11, 2024

JUN 11, 2024

Podcast

Founder Nico Wittenborn discussed the ‘adjacent possible’ investing framework on Invest Like the Best.

Nico Wittenborn on Invest Like the Best: Finding the Adjacent Possible

open.spotify.comMAY 7, 2024

MAY 7, 2024

Milestone

Portfolio company Photoroom (an early Adjacent pre-seed investment) raised a $43M Series B at roughly a $500M valuation.

PhotoRoom

PhotoRoom Adjacent

prnewswire.comFEB 27, 2024

FEB 27, 2024