Foresite Capital Reveals 14.5% Stake in Latigo Biotherapeutics After IPO
LTGO is trading near its 52-week low of $17.22 (12% above the low).
Summary
After the IPO, Foresite Capital entities and James B. Tananbaum hold 14.5% of Latigo Biotherapeutics, with all preferred shares and a convertible note converted to common stock.
Key Events · Ownership and Investor Activity · LTGO
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14.5% Aggregate Stake Disclosed
James B. Tananbaum and Foresite Capital entities report beneficial ownership of 9,181,328 shares, representing 14.5% of Latigo Biotherapeutics.
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Preferred Shares Converted at IPO
All Series A-2 and Series B preferred shares automatically converted to common stock at the $18.00 IPO price, along with a $3.5M convertible note.
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IPO Purchase by Fund VI
Fund VI purchased 140,000 shares at $18.00 per share, totaling $2.52M, in the IPO, as previously reported in Form 4 filings.
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180-Day Lock-Up Restricts Sales
Lock-up agreements with underwriters prevent sales of shares for 180 days after the IPO, reducing near-term selling pressure.
Analysis · LTGO · Life Sciences
Following Latigo's IPO, Foresite Capital and James B. Tananbaum report aggregate beneficial ownership of 9,181,328 shares, or 14.5% of the company. The filing details how preferred shares and a $3.5M convertible note converted into common stock at the $18.00 IPO price, alongside a 140,000-share open-market purchase by Fund VI. Lock-up agreements restrict sales for 180 days, which limits near-term overhang.
How filings like this one have moved
In the 30 days to Sep 14, 2026, 29.9% of the 1591 measured filings Wiseek scored 7 moved their stock by 5% or more by the next session's close. The median move was -0.24%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, LTGO was trading at $19.30 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $1.2B. The 52-week trading range was $17.22 to $20.49. This filing was assessed with neutral market sentiment and an importance score of 7 out of 10.