C2N DIAGNOSTICS LLC

Saint Louis, MO · Biotech · Private

Blood test for early detection of Alzheimer's disease using biomarkers

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Updated · c2ndiagnostics.com

Sector
Biotech
Headquarters
Saint Louis, MO
Latest Form D
$10M, May 2025
Total capital
$21.2M
Federal grants
$3.7M
5 awards · 2018–2020
Rank in peer group#9 of 32
Private capital raised
$17.5M
2 Form D · last May 2025
17 months since last filing
Federal contracts
None on recordNo federal contract awards found.
Granted patents
2
7 pending · first 2018
Rank in peer group#7 of 32

Capital timeline

20182019202020212022202320242025FEDERAL ↑EQUITY ↓Cumulative $21.2M$224K$1.1M$1.7M$384K$250K1st Form D$7.5M
2018202020222024FEDERAL ↑EQUITY ↓Cumulative $21.2M$1.1M$1.7M$250K1st Form D$7.5M

Latest events

  • Private capital raisedForm D · SEC · 2nd filing$10M
  • Private capital raisedForm D · SEC · 1st filing$7.5M
  • Federal grantHealth and Human S · Phase II · Coverage for costs associated with reading of amyloid PET images from PARIS study$250K
  • Federal grantHealth and Human S · Phase II · Plasma Abeta isoform concentrations in cognitively impaired patients at risk for amyloidosis$384K
  • Federal grantHealth and Human S · Phase II · Coverage for costs associated with reading of amyloid PET images from PARIS study$1.7M
  • Federal grantHealth and Human S · Phase II · Plasma Abeta isoform concentrations in cognitively impaired patients at risk for amyloidosis$1.1M
  • Federal grantHealth and Human S · Phase II · Plasma Abeta isoform concentrations in cognitively impaired patients at risk for amyloidosis$224K

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.

Federal first

72months

from C2N DIAGNOSTICS LLC’s first federal award to its first private round.

First federal award · May 2018
Health and Human S · $224K
First Form D · May 2024
$7.5M · 1st Form D
Awards before first raise
5 awards

An association in public records, not a cause or a prediction.

Standing among 32 peers

Line = median

Biotech · Instrument

  • Federal grants#9 · top 28%
  • Granted patents#7 · top 22%

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

From SEC Form D filings
  • Dr. David HoltzmanDirectorNamed in SEC Form D filings
  • Dr. Joel BraunsteinExecutive Officer, DirectorNamed in SEC Form D filings
  • Dr. Michael GoldblattDirectorNamed in SEC Form D filings
  • Dr. Randall BatemanDirectorNamed in SEC Form D filings
  • Fred MillerDirectorNamed in SEC Form D filings
  • Micah OnixtExecutive OfficerNamed in SEC Form D filings

What it has protected

USPTO · 2 granted of 9
Show all 9 patent records
  • Methods For Measuring Concentrations Of Biomolecules In BiofluidsApr 13, 2021 · US 10,976,323Granted
  • Stable Formulations Of Humanized Anti-tau AntibodyJan 30, 2020 · Application 15735728Pending
  • Humanized Anti-tau AntibodiesDec 27, 2018 · Application 15934413Pending
  • Methods For Extracting And Measuring Concentrations Of Biomolecules In Complex Matrices Without The Need For ImmunocaptureDec 20, 2018 · Application 15981767Pending
  • Humanized Anti-tau AntibodiesMay 1, 2018 · US 9,957,317Granted
  • Humanized Anti-tau AntibodiesApplication PCTUS2015038002Pending
  • Methods For Measuring Concentrations Of Biomolecules In BiofluidsApplication PCTUS2018017691Pending
  • Stable Formulations Of Humanized Anti-tau AntibodyApplication PCTUS2016037236Pending
  • Methods For Extracting And Measuring Concentrations Of Biomolecules In Complex Matrices Without The Need For ImmunocaptureApplication PCTUS2018032901Pending

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 .