ACTIVE4D, INC.

Solana Beach, CA · Medtech · Still private

Wearable sensor device with sEMG, IMU, temperature, and bioimpedance sensors for real-time biofeedback during post-surgical shoulder rehabilitation

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Updated Oct 23, 2026

Sector: Medtech
Headquarters: Solana Beach, CA
Total capital: $2.4M

Federal grants: $2.4M; 4 awards · 2020–2025; Rank in peer group#471 of 538
Private capital raised: None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts: None on recordNo federal contract awards found.
Granted patents: 2; 4 pending · first 2021; Rank in peer group#190 of 538

Capital timeline

Latest events

Jul 2025Federal grantHealth and Human S · Phase II · Wearable Monitoring System for Enhancing Rehabilitation Following Rotator Cuff Repair$707K
Jul 2024Federal grantHealth and Human S · Phase II · Wearable Monitoring System for Enhancing Rehabilitation Following Rotator Cuff Repair$1.2M
Sep 2020Federal grantHealth and Human S · Phase I · Wearable Sensors for Biofeedback and Remote Monitoring$251K
Sep 2020Federal grantHealth and Human S · Phase I · Wearable Sensors for Biofeedback & Remote Monitoring$251K

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 538 peers

Line = median

Medtech · Device

Federal grantsBelow median
Granted patents#190 · top 35%

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

No founders are linked to this company yet.

Founders appear once a person is matched to the company through its own patents, grants or filings. We never infer people from social profiles.

Checked: USPTO inventors; federal award principal investigators; SEC Form D related persons · Oct 23, 2026

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What it has protected

USPTO · 2 granted of 6

Jan 16, 2024GrantedShoulder Monitoring And Treatment SystemUSPTOUS 11,872,051
Jul 20, 2021GrantedShoulder Monitoring and Treatment SystemUSPTOUS 11,064,936
PendingBiometric Monitoring And Treatment DeviceUSPTOApplication PCTUS2024045034

Show all 6 patent records

Shoulder Monitoring And Treatment SystemJan 16, 2024 · US 11,872,051Granted
Shoulder Monitoring and Treatment SystemJul 20, 2021 · US 11,064,936Granted
Biometric Monitoring And Treatment DeviceApplication PCTUS2024045034Pending
Biometric Monitoring And Treatment DeviceApplication 63536000Pending
Shoulder Monitoring And Treatment SystemApplication PCTUS2015048561Pending
Biometric Monitoring And Treatment DeviceApplication 19513035Pending

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Active Implants LLCSimilar federal contract value in Medtech · null in contracts
NEXT HEALTH, LLCSimilar federal contract value in Medtech · null in contracts

Regulatory activity · Medtech

Sector-level, not company-level

07 Jul 2026New Animal Drugs; Approval of New Animal Drug Applications; Withdrawal of Approval of New Animal Drug Application; Change of SponsorFood and Drug Administration
30 Jun 2026Medical Devices; General and Plastic Surgery Devices; Classification of the Skin Patch for Treatment of HyperhidrosisFood and Drug Administration
30 Jun 2026Medical Devices; Anesthesiology Devices; Classification of the Monitor for Opioid Induced Impairment of OxygenationFood and Drug Administration
29 Jun 2026Medical Devices; Orthopedic Devices; Classification of the Medial Knee Implanted Shock AbsorberFood and Drug Administration
26 Jun 2026Medical Devices; Neurological Devices; Classification of the External Lower Extremity Nerve Stimulator for Restless Legs SyndromeFood and Drug Administration
26 Jun 2026Medical Devices; General Hospital and Personal Use Devices; Classification of the Infant Supine Sleep SystemFood and Drug Administration

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 Oct 23, 2026. SBIR and STTR awards through Oct 21, 2026.