Harmony Partners is a boutique venture fund that intentionally keeps its funds small—turning away demand to close Fund II at $85M and Fund III at $105M—while using a separate $30M co-investment vehicle to still reach larger deals, and it's led by Mark Lotke (previously at General Atlantic, Internet Capital Group, and FTV Capital) and Clemens Baumgart (with experience at Rocket Internet, Project A, McKinsey, and Jefferies). The firm leads expansion-stage rounds for founders, often building infrastructure for scaling companies in software and security, sometimes entering through secondary deals like its role in Axonius, and its portfolio includes outcomes such as Klaviyo, UiPath, Squarespace, Spotify, and Anaplan, along with acquisitions like Postmates, Randori, Split, and Axonify.