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CAPESYM INC

Natick, MA · Defense · Private

Spectroscopic Personal Radiation Detector (SPRD) using TlBr semiconductor sensors for gamma detection and LiInSe2 for neutron detection

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Updated · capesym.com

Sector
Defense
Headquarters
Natick, MA
Total capital
$46.7M
Federal grants
$21.4M
37 awards · 2015–2025
Rank in peer group#20 of 164
Private capital raised
None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts
$25.4M
41 awards · Defense, Homeland Security
Rank in Defense#230 of 1442
Granted patents
4
2 pending · first 2019
Rank in peer group#40 of 164

Capital timeline

20072011201520192023FEDERAL ↑EQUITY ↓Cumulative $46.7M2007: $2.6M across 2 contracts2008: $750K across 1 contract2009: $100K across 1 contract2010: $1.3M across 3 contracts2011: $1.4M across 4 contracts2012: $1.3M across 3 contracts2013: $2M across 2 contracts2014: $150K across 1 contract2015: $150K across 1 grant · $3.5M across 3 contracts$3.6M2016: $1.4M across 4 grants · $3.5M across 4 contracts$4.9M2017: $2.2M across 3 grants2018: $345K across 2 grants2019: $1.6M across 4 grants · $234K across 2 contracts2020: $4.8M across 6 grants · $999K across 1 contract$5.8M2021: $2.2M across 4 grants · $150K across 1 contract2022: $2.7M across 5 grants · $25K across 1 contract$2.8M2023: $2.7M across 5 grants · $5M across 6 contracts$7.7M2024: $2.2M across 2 grants · $2.3M across 3 contracts$4.5M2025: $925K across 1 grant · $96K across 3 contracts
20072011201520192023FEDERAL ↑EQUITY ↓Cumulative $46.7M2007: $2.6M across 2 contracts2008: $750K across 1 contract2009: $100K across 1 contract2010: $1.3M across 3 contracts2011: $1.4M across 4 contracts2012: $1.3M across 3 contracts2013: $2M across 2 contracts2014: $150K across 1 contract2015: $150K across 1 grant · $3.5M across 3 contracts2016: $1.4M across 4 grants · $3.5M across 4 contracts$4.9M2017: $2.2M across 3 grants2018: $345K across 2 grants2019: $1.6M across 4 grants · $234K across 2 contracts2020: $4.8M across 6 grants · $999K across 1 contract$5.8M2021: $2.2M across 4 grants · $150K across 1 contract2022: $2.7M across 5 grants · $25K across 1 contract2023: $2.7M across 5 grants · $5M across 6 contracts$7.7M2024: $2.2M across 2 grants · $2.3M across 3 contracts$4.5M2025: $925K across 1 grant · $96K across 3 contracts

Latest events

  • Federal grantHealth and Human S · Phase II · High-Resolution Direct-Conversion X-ray Detectors for Low-Dose Imaging$925K
  • Federal contractDefense · Clyc Crystal Scintillators And GEANT4 Modeling Service$58K
  • Federal contractDefense · Capesym, Inc Labr Assembly - 50X102MM Scintimax Labr, R6232-100 Pmt$23K
  • Federal contractDefense · S2P2 Nal Scintillation Detector Solicitation# W911S225U0299$15K
  • Federal contractDefense · Small Business Technology Transfer (STTR) Program Phase II - Large Multi-modal Scintillators$1.1M
  • Federal contractDefense · R&d Services For- High Dose Rate Rugged Dosimeter$1.1M
  • Federal grantDefense · Phase II · R&d Services For- High Dose Rate Rugged Dosimeter$1.1M
Show 71 earlier federal awards
  • Federal grantDefense · Phase II · Small Business Technology Transfer (STTR) Program Phase II - Large Multi-modal Scintillators$1.1M
  • Federal contractDefense · Custom Configuration Detectors.$122K
  • Federal contractDefense · Sbir/sttr Phase I Research & Development Impurity Reduction In Precipitate-free Czt Substrates$150K
  • Federal contractDefense · Large Form-factor Scintillators$167K
  • Federal contractDefense · 6CLYC-76X152-R6233$600K
  • Federal grantEnergy · Phase I · High-Yield Growth of High-Performance Radiation Detection Semiconductor Materials$200K
  • Federal contractHomeland Security · TS#13 Award To Capesym, Inc. For R&d$1.4M
  • Federal grantHomeland Security · Phase II · Semiconductor Based Radiation Detection Instrument$1M
  • Federal contractHomeland Security · Cwmd SBIR Phase II Award To Capesym, Inc. For Research And Development.$531K
  • Federal grantEnergy · Phase II · Low-Cost Pixelated X-ray Imager$1.1M
  • Federal grantEnergy · Phase I · High Spatial Resolution Detectors for Nuclear Physics Applications$200K
  • Federal contractDefense · Sbir/sttr Phase II R&d Innovation System For Growth Of Large Cdznte Crystals$2.1M
  • Federal grantDefense · Phase I · High Dose Rate Rugged GM Detector$167K
  • Federal grantDefense · Phase II · Rugged Ultrafast Radiation Hard Scintillators for Nuclear Battlefield$1.1M
  • Federal grantHomeland Security · Phase I · Semiconductor Based SPRD$150K
  • Federal grantEnergy · Phase II · High Performance Scintillator for Nuclear Physics Research$1.1M
  • Federal grantEnergy · Phase I · Low-cost Pixelated X-ray Imager$200K
  • Federal grantEnergy · Phase I · Photon Counting Single Crystal Perovskite X-ray Camera$200K
  • Federal contractDefense · Long Scinticlear$25K
  • Federal contractDefense · Sbir/sttr Phase I Research & Development Innovative System For Growth Of Large Cdznte Crystals.$150K
  • Federal grantHealth and Human S · Phase II · Low-Cost, Low-Dose Flat Panel X-ray Detectors with a Novel Semiconductor$732K
  • Federal grantEnergy · Phase II · High performance scintillation sensor for gamma spectroscopy in space$1.1M
  • Federal grantDefense · Phase I · Rugged Ultrafast Radiation Hard Scintillators for Nuclear Battlefield$167K
  • Federal grantEnergy · Phase I · High Performance Scintillator for Nuclear Physics Research$200K
  • Federal grantHealth and Human S · Phase II · Low-Cost, Low-Dose Flat Panel X-ray Detectors with a Novel Semiconductor$1.6M
  • Federal grantHealth and Human S · Phase II · Low-Cost, Low-Dose Flat Panel X-ray Detectors with a Novel Semiconductor$834K
  • Federal contractDefense · This Contract Is Issued For STTR Program Phase 2, Title High Energy Resolution Mixed-halide Elpasolite Scintillators For Next Generation Riid$999K
  • Federal grantEnergy · Phase I · A High Performance Scintillation Sensor for Gama Ray Spectroscopy in Space$200K
  • Federal grantEnergy · Phase I · Accelerated Development of Next Generation Semiconductor Radiation Detectors$200K
  • Federal grantDefense · Phase II · Optimization of Scintillators for Enhanced Performance through Materials Engineering$997K
  • Federal grantEnergy · Phase II · Large-Area Radiation-Hard Synchrotron X-ray Detectors$1.1M
  • Federal grantEnergy · Phase II · A High Performance Scintillator for Gamma Ray Spectroscopy$1.1M
  • Federal contractDefense · Crystals Pr# 76-5011-19$84K
  • Federal grantHealth and Human S · Phase I · Low-Cost, Low-Dose Flat Panel X-ray Detectors with a Novel Semiconductor$150K
  • Federal grantHealth and Human S · Phase I · Low-Cost, Low-Dose Flat Panel X-ray Detectors with a Novel Semiconductor$150K
  • Federal grantEnergy · Phase I · Large-area Radiation-hard Synchrotron X-ray Detectors$150K
  • Federal contractDefense · High Energy Resolution Mixed-halide Elpasolite Scintillators For Next Generation Riid$150K
  • Federal grantDefense · Phase I · Innovative Materials Engineering and Growth of a High Performance and Low Cost Scintillator$150K
  • Federal grantHealth and Human S · Phase II · Smartphone Simulator for Realistic Radiation HAZMAT and Emergency Response Training$195K
  • Federal grantHomeland Security · Phase II · Large Volume Composite Scintillators$1M
  • Federal grantEnergy · Phase II · A High Performance Scintillator for Gamma Ray Spectroscopy$1M
  • Federal grantHealth and Human S · Phase II · Smartphone Simulator for Realistic Radiation HAZMAT and Emergency Response Training$200K
  • Federal contractHomeland Security · Igf::ot::igf Er Baa Award$618K
  • Federal contractHomeland Security · Igf::ot::igf Dhs Exploratory Research (er) Baa Award$1.4M
  • Federal grantHomeland Security · Phase I · Large Volume Composite Scintillators$155K
  • Federal grantEnergy · Phase I · A High Performance Scintilator for Gamma Spectroscopy$150K
  • Federal grantHealth and Human S · Phase I · Smartphone Simulator for Realistic Radiation HAZMAT and Emergency Response Training$96K
  • Federal grantHomeland Security · Phase II · Stable Tl-based Semiconductor Modules for Radiation Detection$999K
  • Federal contractHomeland Security · Igf::ot::igf New SBIR Phase II Contract Dndo Alc: 7023-0001 Dndo Tas: 070201620180860000 Dndo Tpma: 0860 Dndo Duns: 78-497-8483 Dndo Betc: Disb Ref: Faams Pr RDTR-16-0037 Tar FY16 3 Year R&d Funds Tar FY16 Excel Line 241 Vendor: Capesym Iaa/contract#: New Contract Option/phase/clin: Base (12 Mos) With Option 1 (12 Mos) Period Of Performance: 03/15/2016 - 03/14/2018 The Purpose Of This Term Cost-plus-fixed-fee Contract Between The Department Of Homeland Security (dhs) Domestic Nuclear Det$499K
  • Federal contractHomeland Security · Igf::ot::igf New SBIR Phase II Contract$998K
  • Federal contractHomeland Security · Igf::ot::igf SBIR Phase III High Purity Precursor Materials$499K
  • Federal contractHomeland Security · Igf::ot::igf Low-cost Production Of Halide Crystals$2M
  • Federal grantHomeland Security · Phase I · Stable Tl-based Semiconductor Modules for Radiation Detection$150K
  • Federal contractDefense · Igf::ot::igf SBIR Phase II Research&development Titled "czt Substrates For Improved Mct Detector Performance"$1M
  • Federal contractHomeland Security · Igf::ot::igf New SBIR Phase I Contract$150K
  • Federal contractHomeland Security · Igf::ot::igf Dhs SBIR-2012.1 Phase II Contract For Research And Development In Accordance With The Capesym, Inc.'s Technical Proposal Entitled "establishment Of Scientific And Industrial Base For Production Of High Purity Precursor Materials For SRI2: Eu And Clyc"$998K
  • Federal contractHomeland Security · Igf::ot::igf Dhs SBIR-2012.1 Phase II Contract For Research And Development In Accordance With The Capesym, Inc.'s Technical Proposal Entitled "defect Engineering Of Thallium Bromide For Room Temperature Gamma Radiation Detection".$992K
  • Federal contractHomeland Security · This Is A Planning Pr For The FY12 SBIR Program To Set Aside $150,000.00 For Placeholder Company G. ALC:70230001 APP:70 12 14 0860$150K
  • Federal contractHomeland Security · This Is A Planning Pr For The FY12 SBIR Program To Set Aside $150,000.00 For Placeholder Company C. ALC:70230001 APP:70 12 14 0860$150K
  • Federal contractDefense · Igf::ot::igf Sbir/sttr Phase II Research&dev.$1.0M
  • Federal contractDefense · SBIR Phase II Research And Development$997K
  • Federal contractHomeland Security · This Pr Is To Fund $149,267 To Capsym, Inc Phase I For Pop: 10/01/2011 - 03/31/2011 ALC:70230001 Aap: 700/120860 Cotr: Alan Janos Alan.janos@hq.dhs.gov 202-254-7606 Sibr Spend Plan Line: 27 SBIR11-1-SBIR11.1-003FP-008$149K
  • Federal contractHomeland Security · This Pr Is To Fund $149,858 To Capesym, Inc For Phase I. Pop: 10/01/2011 - 03/31/2012 ALC:70230001 Aap: 700/120860 Cotr: Alan Jano Alan.janos@hq.dhs.gov 202-254-7606 Sibr Spend Plan Line: 07 SBIR11-1-SBIR11.1-003-FP-006$150K
  • Federal contractDefense · Ph I Research&development$150K
  • Federal contractDefense · Mda SBIR Phase 2$1.1M
  • Federal contractDefense · Mda SBIR Phase 1$100K
  • Federal contractDefense · Electromagnetically-stirred Thm Process For Growth Of Czt - SBIR Phase I$100K
  • Federal contractDefense · Dla Phase I SBIR$100K
  • Federal contractDefense · (STTR Phse II) Growth Of Alloy Semiconductors With Travelling Magnetic Fields$750K
  • Federal contractDefense · SBIR Phase II, Basic Effort, Low Defect Lwir Substrates By Detached Growth Method$1.7M
  • Federal contractDefense · Mda SBIR Phase II$900K

Federal awards are summed by year (78 awards); hover a bar for the split. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Standing among 164 peers

Line = median

Defense · Device

  • Federal grants#20 · top 12%
  • Granted patents#40 · top 24%
  • Linked publications#6 · 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

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 · 4 granted of 6
Show all 6 patent records

Recent research by its founders

  • Large-Diameter Growth of Thallium-Based Ternary Halide Tl2HfX6 and Tl2ZrX6: Intrinsic Bright Scintillators for Detection and Imaging20260 cites
  • UAV path selection in multi-hop cooperative UAV-based networks: A deep reinforcement learning approach20258 cites
  • $\boldsymbol{\beta}-\text{Ga}_{2} \mathrm{O}_{3}$ a Potential Scintillator for Photon Counting X-Ray Detectors20250 cites

Related companies, and why

Regulatory activity · Defense

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 .