- Storm Duncan, an investment banker, is publicly seeking Anthropic pre-IPO equity in exchange for a 13-acre Mill Valley, California property, per reporting by TechCrunch and the San Francisco Standard on April 26, 2026.
- Duncan purchased the property in 2019 for $4.75 million; it is currently leased to a high-profile venture capitalist whose identity he declined to disclose.
- The proposed deal is a private bilateral transaction in which the equity seller would retain 20% of the upside value of the transferred shares through the lockup period.
- Duncan cited portfolio concentration as his rationale, describing himself as “over-concentrated in real estate” and “under-concentrated in AI investments relative to the importance of AI in the future.”
What Happened
Investment banker Storm Duncan announced via LinkedIn that he intends to exchange a 13-acre property in Mill Valley, California — in Marin County, north of San Francisco — for pre-IPO equity in Anthropic, the AI safety company. The listing was reported by TechCrunch on April 26, 2026, drawing on coverage from the San Francisco Standard. Duncan, who described himself as a longtime Bay Area resident who relocated to Miami during the pandemic, created a dedicated LinkedIn page for the property and is directing interested parties to contact him by email.
Duncan framed the listing as a personal asset-allocation decision. “I’m under-concentrated in AI investments relative to the importance of AI in the future, and over-concentrated in real estate,” he told the San Francisco Standard, adding that a young Anthropic employee might be “in the exact opposite scenario.”
Why It Matters
Pre-IPO equity at high-valuation AI companies has become a substantial component of employee compensation, but it remains illiquid until a public offering or approved secondary transaction. Anthropic, which has raised billions of dollars from investors including Google and Amazon, is among the most closely watched private AI companies in terms of potential IPO activity. Secondary equity sales at such companies typically require company approval and are governed by right-of-first-refusal provisions, shareholder agreements, and lockup restrictions — constraints that can leave employees with significant paper wealth and limited near-term access to liquidity.
Barter-style arrangements, in which equity is swapped for real assets rather than sold for cash, represent an uncommon approach to secondary liquidity. Duncan’s listing is notable in part for being conducted openly via a professional networking platform rather than through private channels or licensed secondary brokers.
Technical Details
Duncan proposed a specific financial structure to address the lockup constraint. According to his LinkedIn post, the buyer would “continue to retain 20% of the upside value of the shares exchanged for the duration of the lockup period,” meaning the Anthropic equity holder would still participate in future price appreciation on a portion of the shares transferred. The transaction is framed as one that does not require the buyer to sell their shares outright, a step that would typically trigger disclosure and approval requirements under most private company shareholder agreements.
The property spans 13 acres and was purchased by Duncan in 2019 for $4.75 million. No updated property valuation or share-equivalency figure has been publicly stated; Duncan said deal specifics would be negotiated privately via email. The property is currently occupied by a high-profile venture capitalist whose identity Duncan declined to reveal.
Who’s Affected
The offer explicitly targets early Anthropic employees who hold pre-IPO equity and are seeking hard-asset exposure without liquidating their company stake on an open secondary market. Duncan described the ideal counterparty as someone equity-heavy and real-estate-light — the inverse of his own position. The Mill Valley location places the property within commuting distance of Anthropic’s San Francisco offices. Secondary equity brokers and Marin County real estate professionals could see adjacent interest if the arrangement attracts broader attention from AI employees at other pre-IPO firms.
What’s Next
Duncan has not disclosed a minimum equity value, a share-price floor, or a transaction timeline, directing all inquiries to his email. Whether any such transfer would require Anthropic’s formal consent depends on the company’s shareholder agreement and applicable transfer restrictions, which have not been made public. No confirmed buyer has been announced as of April 27, 2026.
