EndoSound, Inc.

PORTLAND, OR · Founded 2020 · Medtech · Private

Endoscopic ultrasound imaging system that attaches to standard endoscopes

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Updated · endosound.com

Sector
Medtech
Headquarters
PORTLAND, OR
Founded
2020
Latest Form D
$250K, Jun 2026
Total capital
$3.1M
Federal grants
None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
Private capital raised
$3.1M
5 Form D · last Jun 2026
4 months since last filing
Federal contracts
None on recordNo federal contract awards found.
Granted patents
4
16 pending · first 2024
Rank in peer group#337 of 1112

Capital timeline

202120222023202420252026FEDERAL ↑EQUITY ↓Cumulative $3.1M1st Form D$361K3rd Form D$2.4M4th Form D$50K5th Form D$250K
202120222023202420252026FEDERAL ↑EQUITY ↓Cumulative $3.1M5th Form D$250K

Latest events

  • Private capital raisedForm D · SEC · 5th filing$250K
  • Private capital raisedForm D · SEC · 4th filing$50K
  • Private capital raisedForm D · SEC · 3rd filing$2.4M
  • Private capital raisedForm D · SEC · 2nd filing$50K
  • Private capital raisedForm D · SEC · 1st filing$361K

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 1112 peers

Line = median

Medtech · Device

  • Granted patents#337 · top 30%

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
  • Brian TinkhamDirectorNamed in SEC Form D filings
  • Morris SandlerDirectorNamed in SEC Form D filings
  • Nicholas PuroDirectorNamed in SEC Form D filings
  • Scott AldrichExecutive OfficerNamed in SEC Form D filings
  • Scott CorbettExecutive Officer, Director, PromoterNamed in SEC Form D filings
  • Stephen SteinbergExecutive Officer, Director, PromoterNamed in SEC Form D filings
Show all 7 people
  • William RhodesDirectorNamed in SEC Form D filings

What it has protected

USPTO · 4 granted of 20
  • New patentUltrasonic Attachment Assembly For An EndoscopeUSPTOUS 12,751,601
  • PendingDevices, Systems, And Methods For Using An Integral Adaptor To Couple An Accessory With An Incompatible Connector To An EndoscopeUSPTOApplication 19482507
  • PendingDevices, Systems, And Methods For Guiding An Endoscope Instrument And Selectively Moving An Attachable Ultrasound AssemblyUSPTOApplication 19155387
Show all 20 patent records
  • Ultrasonic Attachment Assembly For An EndoscopeOct 6, 2026 · US 12,751,601Granted
  • Devices, Systems, And Methods For Using An Integral Adaptor To Couple An Accessory With An Incompatible Connector To An EndoscopeApr 30, 2026 · Application 19482507Pending
  • Devices, Systems, And Methods For Guiding An Endoscope Instrument And Selectively Moving An Attachable Ultrasound AssemblyApr 23, 2026 · Application 19155387Pending
  • Steerable Ultrasound Attachment For EndoscopeApr 16, 2026 · Application 19407699Pending
  • Steerable Ultrasound Attachment For EndoscopeMar 26, 2026 · Application 19407765Pending
  • Devices, Systems, And Methods For Securely And Selectively Attaching An Ultrasound Accessory To An EndoscopeMar 3, 2026 · US 12,564,375Granted
  • Steerable Ultrasound Attachment For EndoscopeJan 6, 2026 · US 12,514,432Granted
  • Ultrasonic Attachment Assembly For An EndoscopeJan 1, 2026 · Application 19106695Pending
  • Devices, Systems, And Methods For Extending An EndoscopeJul 18, 2024 · Application 18562303Pending
  • Steerable Ultrasound Attachment For EndoscopeMar 19, 2024 · US 11,930,999Granted
  • Steerable Ultrasound Attachment For EndoscopeJan 5, 2023 · Application 17813130Pending
  • Ultrasonic Attachment Assembly For An EndoscopeApplication 63373724Pending
  • Device, Systems, And Methods For Selectively Attaching An Ultrasound Head To An EndoscopeApplication 19504529Pending
  • Devices, Systems, And Methods For Guiding An Endoscope Instrument And Selectively Moving An Attachable Ultrasound AssemblyApplication 63484556Pending
  • Devices, Systems, And Methods For Using An Integral Adaptor To Couple An Accessory With An Incompatible Connector To An EndoscopeApplication PCTUS2024033140Pending
  • Device, Systems, And Methods For Selectively Attaching An Ultrasound Head To An EndoscopeApplication 63654783Pending
  • Devices, Systems, And Methods For Guiding An Endoscope Instrument And Selectively Moving An Attachable Ultrasound AssemblyApplication PCTUS2024015362Pending
  • Ultrasonic Attachment Assembly For An EndoscopeApplication PCTUS2023072754Pending
  • Devices, Systems, And Methods For Using An Integral Adaptor To Couple An Accessory With An Incompatible Connector To An EndoscopeApplication 63507280Pending
  • Device, Systems, And Methods For Selectively Attaching An Ultrasound Head To An EndoscopeApplication PCTUS2025031882Pending

Regulatory activity · Medtech

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 .