858 Therapeutics

Founded 2019 · Biotech · Private

Covalent chemistry platform for irreversible small molecule inhibitors targeting cancer

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Updated · 858therapeutics.com

Sector
Biotech
Founded
2019
Latest Form D
$25.2M, Jul 2024
Total capital
$65.2M
Federal grants
None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
Private capital raised
$65.2M
3 Form D · last Jul 2024
28 months since last filing
Federal contracts
None on recordNo federal contract awards found.
Granted patents
2
11 pending · first 2024
Rank in peer group#397 of 1449

Capital timeline

20202021202220232024FEDERAL ↑EQUITY ↓Cumulative $65.2M1st Form D$20.1M2nd Form D$20M3rd Form D$25.2M
20202021202220232024FEDERAL ↑EQUITY ↓Cumulative $65.2M2nd Form D$20M3rd Form D$25.2M

Latest events

  • Private capital raisedForm D · SEC · 3rd filing$25.2M
  • Private capital raisedForm D · SEC · 2nd filing$20M
  • Private capital raisedForm D · SEC · 1st filing$20.1M

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Standing among 1449 peers

Line = median

Biotech · Molecule

  • Granted patents#397 · top 27%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

Researcher links verified by same-company patents and grants
  • James VealResearcherExecutive OfficerLinked by 2 patents
  • Ali BehbahaniDirectorNamed in SEC Form D filings
  • Bradley J. BolzonDirectorNamed in SEC Form D filings
  • Carlo RizzutoDirectorNamed in SEC Form D filings
  • Clare OzawaDirectorNamed in SEC Form D filings
  • Jane HuangDirectorNamed in SEC Form D filings
Show all 10 people
  • Jeffrey A. StaffordExecutive Officer, DirectorNamed in SEC Form D filings
  • Katherine Bell-McGuinnExecutive OfficerNamed in SEC Form D filings
  • Monal MehtaDirectorNamed in SEC Form D filings
  • Stafford JeffreyExecutive Officer, DirectorNamed in SEC Form D filings

What it has protected

USPTO · 2 granted of 13
Show all 13 patent records
  • Substituted IMIDAZO[1,2-A]QUINAZOLINES As Inhibitors Of PargOct 7, 2025 · US 12,435,092Granted
  • 6,6-FUSED Heterocyclic Compounds As METTL3 InhibitorsFeb 20, 2025 · Application 18718735Pending
  • Inhibitors Of Qpctl And QpctMar 28, 2024 · Application 18356166Pending
  • SUBSTITUTED IMIDAZO[1,2-a]QUINAZOLINES AND IMIDAZO[1,2-a]PYRIDO[4,3-e]PYRIMIDINES AS INHIBITORS OF PARGMar 26, 2024 · US 11,939,335Granted
  • Inhibitors Of Qpctl And QpctApplication PCTUS2023070646Pending
  • Inhibitors Of PargApplication PCTUS2023022390Pending
  • 6,6-FUSED Heterocyclic Compounds As METTL3 InhibitorsApplication PCTUS2022082436Pending
  • Inhibitors Of PargApplication 63343005Pending
  • Inhibitors Of PargApplication PCTUS2024056940Pending
  • 6,6-FUSED Heterocyclic Compounds As METTL3 InhibitorsApplication 63294674Pending
  • Treatment Of Cancer With A Parg InhibitorApplication PCTUS2024056671Pending
  • Inhibitors Of PargApplication 63602264Pending
  • Treatment Of Cancer With A Parg InhibitorApplication 63601453Pending
  • EPALEX CorpSimilar federal contract value in Biotech · null in contracts
  • Cybrexa Holding Company, LLCSimilar federal contract value in Biotech · null in contracts
  • KisoTerra Biotech Corp.Similar federal contract value in Biotech · null in contracts
  • Remedy Plan, Inc.Similar federal contract value in Biotech · null in contracts
  • Vyome Therapeutics Inc.Similar federal contract value in Biotech · null in contracts
  • Pliant.io, Inc.Similar federal contract value in Biotech · null in contracts

Regulatory activity · Biotech

Sector-level, not company-level

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through . SBIR and STTR awards through .