LTGO · NASDAQ · Medical - Pharmaceuticals

Latigo Biotherapeutics (LTGO)

Develops non-opioid NaV1.8 inhibitors for acute and chronic pain.

$20.09
vs last close−0.73 (−3.49%)

13F · 13D/G · Form 4

Insiders17.39%10.46M shares
3 holders · as of Aug 17, 2026
Strategic holders46.81%28.16M shares
4 holders · as of Aug 18, 2026
Other35.80%21.53M shares
remainder

60.15M company shares as of Aug 21, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
Westlake BioPartners Fund I, L.P.Strategic10 percent owner
21.94%13.20Mfiled Aug 11, 2026
James B. TananbaumInsider
15.26%9.18Mfiled Aug 17, 2026
5AM Ventures VI, L.P.Strategic10 percent owner
12.18%7.33Mfiled Aug 12, 2026
RA Capital Management, L.P.Institution
8.80%5.30Mfiled Aug 17, 2026
Deep Track Capital, LPStrategic
7.39%4.45Mfiled Aug 13, 2026
AI Biotechnology LLCStrategic
5.30%3.19Mfiled Aug 18, 2026
SanofiInsider10 percent owner
1.94%1.17Mfiled Aug 12, 2026
Nima FarzanInsiderdirector, officer: President and CEO
0.19%114,453filed Aug 7, 2026
Foresite Capital Management V, LLC1Strategic10 percent owner
0.00%0filed Aug 10, 2026
Beth C. Seidenberg2Insiderdirector, 10 percent owner
0.00%0filed Aug 10, 2026
James B. Tananbaum3Insiderdirector, 10 percent owner
0.00%0filed Aug 10, 2026
  1. Foresite Capital Management V, LLC reports a block also reported by Westlake BioPartners Fund I, L.P.; it is counted once, under Westlake BioPartners Fund I, L.P.
  2. Beth C. Seidenberg reports a block also reported by Westlake BioPartners Fund I, L.P.; it is counted once, under Westlake BioPartners Fund I, L.P.
  3. James B. Tananbaum reports a block also reported by Westlake BioPartners Fund I, L.P.; it is counted once, under Westlake BioPartners Fund I, L.P.

13F

No 13F holders on record.

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
James B. Tananbaumincl. Foresite Capital Fund VI LP, Foresite Capital Management VI, LLC +4 more14.50%9.18M13DAug 17, 2026
RA Capital Management, L.P.8.40%5.30M13GAug 17, 2026
Deep Track Capital, LP7.03%4.45M13GAug 13, 2026
AI Biotechnology LLC5.00%3.19M13GAug 18, 2026

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Aug 10, 2026
Foresite Capital Management V, LLC10 percent owner
Purchase140,000$18.002,008,024
Aug 10, 2026
James B. Tananbaumdirector, 10 percent owner:
Purchase140,000$18.002,008,024

House and Senate disclosures

Not reported.