Highstock

Highstock is a San Francisco-based AI-native B2B marketplace connecting brands with unsold and excess inventory to vetted global wholesale buyers, launched in February 2025 with $5.5 million in funding. The platform allows brands to sell surplus stock privately — preserving brand value and avoiding public liquidation channels — while giving wholesale buyers access to desirable products at exclusive prices with flexible payment terms. Highstock serves 50+ beauty and personal care brands and 100+ wholesale buyers, with over $100 million in inventory listed and more than one million pounds of product diverted from landfill. The company was co-founded by alumni from Instacart and Faire, and is backed by Greylock Partners.