Mevion Medical Systems, Inc.
Compact proton therapy system for cancer treatment
- Sector
- Medtech
- Headquarters
- LITTLETON, MA
- Latest Form D
- $58.8M, Aug 2015
- Total capital
- $95.3M
- Federal grants
- None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
- Private capital raised
- $95.3M
- 3 Form D · last Aug 2015
- 135 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 31
- 9 pending · first 2017
- Rank in peer group#46 of 1112
Capital timeline
Latest events
- Private capital raisedForm D · SEC · 3rd filing$58.8M
- Private capital raisedForm D · SEC · 2nd filing$25M
- Private capital raisedForm D · SEC · 1st filing$11.5M
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 = medianMedtech · Device
- Granted patents#46 · top 4%
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- Anders HoveDirectorNamed in SEC Form D filings
- Cheng LuDirectorNamed in SEC Form D filings
- Donald MelsonExecutive OfficerNamed in SEC Form D filings
- Jay MoorinDirectorNamed in SEC Form D filings
- Jay RaoDirectorNamed in SEC Form D filings
- Joseph JachinowskiExecutive Officer, DirectorNamed in SEC Form D filings
Show all 15 people
- Kenneth GallExecutive Officer, DirectorNamed in SEC Form D filings
- Mitchell BloomExecutive OfficerNamed in SEC Form D filings
- Myles GreenbergDirectorNamed in SEC Form D filings
- Paul VolckerDirectorNamed in SEC Form D filings
- Peter D'AngeloDirectorNamed in SEC Form D filings
- Robert WilsonDirectorNamed in SEC Form D filings
- Stephen BuckleyDirectorNamed in SEC Form D filings
- Xiaowei ChangDirectorNamed in SEC Form D filings
- Xuan LiDirectorNamed in SEC Form D filings
What it has protected
USPTO · 31 granted of 40- PendingBending MagnetUSPTOApplication 19100037
- PendingDevice For Controlling The Beam Current In A SynchrocyclotronUSPTOApplication 18998038
- PendingGantry For A Particle Therapy SystemUSPTOApplication 19038325
Show all 40 patent records
- Bending MagnetFeb 26, 2026 · Application 19100037Pending
- Device For Controlling The Beam Current In A SynchrocyclotronJan 22, 2026 · Application 18998038Pending
- Gantry For A Particle Therapy SystemMay 29, 2025 · Application 19038325Pending
- Gantry Having A Retractable CoverMay 20, 2025 · US 12,303,720Granted
- Gantry Configured For Translational MovementApr 10, 2025 · Application 18726204Pending
- Gantry For A Particle Therapy SystemMar 4, 2025 · US 12,245,355Granted
- Collimator And Energy Degrader For A Particle Therapy SystemDec 17, 2024 · US 12,168,147Granted
- Delivery Of Radiation By Column And Generating A Treatment Plan ThereforDec 10, 2024 · US 12,161,885Granted
- Treatment PlanningNov 19, 2024 · US 12,150,235Granted
- Toroidal Gantry For A Particle Therapy SystemOct 10, 2024 · Application 18580478Pending
- Adaptive ApertureOct 17, 2023 · US 11,786,754Granted
- Scanning SystemAug 8, 2023 · US 11,717,700Granted
- Delivery Of Radiation By Column And Generating A Treatment Plan ThereforAug 8, 2023 · US 11,717,703Granted
- Collimator And Energy Degrader For A Particle Therapy SystemApr 26, 2022 · US 11,311,746Granted
- Delivery Of Radiation By Column And Generating A Treatment Plan ThereforApr 5, 2022 · US 11,291,861Granted
- Adaptive ApertureJan 4, 2022 · US 11,213,697Granted
- Automated Treatment In Particle TherapyDec 2, 2021 · Application 17404066Pending
- Automated Treatment In Particle TherapyAug 31, 2021 · US 11,103,730Granted
- Treatment PlanningFeb 16, 2021 · US 10,925,147Granted
- Energy Degrader Enabling High-speed Energy SwitchingNov 26, 2020 · Application 16895522Pending
- Interrupted Particle SourceNov 17, 2020 · US RE48,317Granted
- Adaptive ApertureSep 29, 2020 · US 10,786,689Granted
- Inner GantryJul 28, 2020 · US 10,722,735Granted
- Programmable Radio Frequency Waveform Generator For A SynchrocyclotronJun 9, 2020 · US RE48,047Granted
- Energy Degrader Enabling High-speed Energy SwitchingJun 9, 2020 · US 10,675,487Granted
- Configurable Collimator Controlled Using Linear MotorsMay 19, 2020 · US 10,653,892Granted
- Adaptive ApertureMay 12, 2020 · US 10,646,728Granted
- Particle Beam ScanningOct 29, 2019 · US 10,456,591Granted
- Scanning SystemOct 8, 2019 · US 10,434,331Granted
- Coil Positioning SystemAug 15, 2019 · Application 16269287Pending
- Magnetic Field RegeneratorJul 30, 2019 · US 10,368,429Granted
- Inner GantryMay 7, 2019 · US 10,279,199Granted
- Particle Beam ScanningApr 16, 2019 · US 10,258,810Granted
- Coil Positioning SystemApr 9, 2019 · US 10,254,739Granted
- Controlling Particle TherapyDec 18, 2018 · US 10,155,124Granted
- Collimator And Energy DegraderMay 8, 2018 · US 9,962,560Granted
- Superconducting Coil ConfigurationMay 3, 2018 · Application 15342632Pending
- Patient Positioning SystemApr 24, 2018 · US 9,950,194Granted
- Inner GantryMar 27, 2018 · US 9,925,395Granted
- Particle Accelerator That Produces Charged Particles Having Variable EnergiesAug 8, 2017 · US 9,730,308Granted
Related companies, and why
- Xact Medical, Inc.Similar federal contract value in Medtech · null in contracts
- LEADOPTIK Inc.Similar federal contract value in Medtech · null in contracts
- ARCUS-MED, LLCSimilar federal contract value in Medtech · null in contracts
- OLFAX, LLCSimilar federal contract value in Medtech · null in contracts
- MINERVA SURGICAL INCSimilar federal contract value in Medtech · null in contracts
- Onda Vision Technologies, LLCSimilar federal contract value in Medtech · null in contracts
Regulatory activity · Medtech
- New Animal Drugs; Approval of New Animal Drug Applications; Withdrawal of Approval of New Animal Drug Application; Change of SponsorFood and Drug Administration
- Medical Devices; General and Plastic Surgery Devices; Classification of the Skin Patch for Treatment of HyperhidrosisFood and Drug Administration
- Medical Devices; Anesthesiology Devices; Classification of the Monitor for Opioid Induced Impairment of OxygenationFood and Drug Administration
- Medical Devices; Orthopedic Devices; Classification of the Medial Knee Implanted Shock AbsorberFood and Drug Administration
- Medical Devices; Neurological Devices; Classification of the External Lower Extremity Nerve Stimulator for Restless Legs SyndromeFood and Drug Administration
- Medical 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 . SBIR and STTR awards through .