Gunderson Dettmer Represents Long-Time Client BillionToOne in its Upsized $273.1 Million Initial Public Offering
Rhea-AI Summary
BillionToOne (Nasdaq: BLLN) completed an upsized initial public offering of 4.6 million shares of Class A common stock at $60 per share, generating approximately $273.1 million in aggregate gross proceeds. The shares began trading on the Nasdaq Global Select Market on November 6, 2025, with the offering expected to close on November 7, 2025.
Gunderson Dettmer represented BillionToOne across multiple financings from Series A through late-stage rounds and advised on the public listing; J.P. Morgan, Piper Sandler, Jefferies and William Blair acted as joint book-running managers, with Stifel, Wells Fargo Securities and BTIG also serving as book-running managers.
Positive
- Proceeds of $273.1 million from the IPO
- Shares issued of 4.6 million at $60 per share
- Listing on Nasdaq Global Select Market on Nov 6, 2025
- Long-term legal relationship: represented from Series A through late-stage rounds
Negative
- IPO execution occurred amid the current government shutdown, introducing potential market uncertainty
News Market Reaction 12 Alerts
On the day this news was published, BLLN declined 8.18%, reflecting a notable negative market reaction. Argus tracked a peak move of +20.9% during that session. Argus tracked a trough of -4.8% from its starting point during tracking. Our momentum scanner triggered 12 alerts that day, indicating notable trading interest and price volatility. This price movement removed approximately $486M from the company's valuation, bringing the market cap to $5.45B at that time.
Data tracked by StockTitan Argus on the day of publication.
Gunderson Dettmer represented BillionToOne through multiple major financing rounds, from its Series A to late-stage equity and debt private rounds. Gunderson's strategic counsel supported BillionToOne from early-stage funding to public markets entry, navigating a dynamic and complex capital markets environment including the current government shutdown.
J.P. Morgan, Piper Sandler, Jefferies and William Blair are acting as joint book-running managers for the offering. Stifel, Wells Fargo Securities and BTIG are also acting as book-running managers for the offering.
The Gunderson deal team included corporate partner Nick Harley, Public Companies/Public Offerings partners Andrew Thorpe and Alexa Belonick, Public Companies/Public Offerings associates Elena Vespoli and Michael Tiab, corporate associates Jenny Whalen-Ball and Megan Wiener, executive compensation partner Michael Richman and associate Erik Ward, and senior paralegals Scott Paraker and Doug Ikegami.
About Gunderson Dettmer
Gunderson Dettmer is the preeminent international law firm with an exclusive focus on the innovation economy. The firm serves market-leading venture capital and growth equity investors and pioneering companies through inception, growth and maturity, as well as groundbreaking public companies that result from the global venture capital ecosystem. The firm's clear-cut focus and well-honed technical skill enables an accelerated pace and unmatched efficiency, delivering best-in-class value at each phase of a client's business.
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SOURCE Gunderson Dettmer
FAQ
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