SIENNA TECHNOLOGIES, INC.

Aerospace · Private

Ultra-high-temperature ceramic composite joining technology and braze alloys for bonding UHTC composites to titanium alloys in hypersonic vehicles

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Updated Oct 23, 2026 · siennatech.com

Sector: Aerospace
Total capital: $9.8M

Federal grants: $205K; 2 awards · 2016; Rank in peer group#11 of 14
Private capital raised: None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts: $9.6M; 55 awards · NASA, Defense; Rank in Aerospace#238 of 1335
Granted patents: 1; 1 pending · first 2018; Rank in peer group#2 of 14

Capital timeline

Latest events

Nov 2026Federal contractNASA · 80NSSC24PC199 Multichip Module Package For Sic Pressure Sensors$60K
Feb 2026Federal contractNASA · Silicon Nitride For Sensor Packaging For High Temperature Applications$136K
Jan 2026Federal contractDefense · 1003-02 - Attenuators$53K
Aug 2024Federal contractNASA · Multi-chip Module Packaging Of Sic Pressure Sensors And Electronics$66K
Jun 2024Federal contractNASA · Drpa Sensor Chips$144K
Feb 2024Federal contractNASA · HF2C Sic Pressure-temperature Sensors Packaging$144K
Mar 2022Federal contractNASA · Packaging Of On-chip Integrated Silicon Carbide Pressure And Micro-tc Sensors$123K

Show 49 earlier federal awards

Jun 2021Federal contractDefense · Custom Board Fabrication$68K
May 2020Federal contractNASA · Packaging Of Drpa And Htp Silicon Carbide Pressure Sensors$126K
Mar 2020Federal contractNASA · Procurement Of Aluminum Nitride And Kovar Braze Joints For Sensor Package Leakage Testing$26K
May 2019Federal contractNASA · Electric Testbeds$13K
May 2019Federal contractNASA · Packaging Silicon Carbide Pressure Sensors$61K
Apr 2019Federal contractNASA · Packaging Of NASA Grc Sic Sensors$42K
Nov 2018Federal contractDefense · SBIR I - High Performance Vacuum Compatible Materials For Hpem Devices$150K
Sep 2018Federal contractNASA · Surface Mounted Packaging For NASA Grc Silicon Carbide Pressure Sensors$20K
Jun 2018Federal contractNASA · Custom To-class 12-PIN Sensors And Electronics Packaging For 600 Degrees C And Simulated Venus Atmospheric Environment.$36K
Jun 2017Federal contractNASA · Igf::ot::igf Sienna Technologies, Inc, Proposes To Develop A Robust, Long Life, Catalytically Ignited Thruster That Can Perform Multiple Cold Starts At Low Preheat Temperatures (<<425 C) Using High Performance Green AF-M315E Monopropellant That Can Provide A Range Of Mission Specific Thrust Levels For NASA Smd's Sample Return Missions. In Phase I We Will Improve Upon Sienna's Industry Leading SSC-111 Catalyst And Demonstrate Its Multiple Cold Start Capability At Low Preheat Temperatures (well B$125K
May 2017Federal contractNASA · Igf::ot::igf Packaging Of Silicon Carbide Pressure Sensors Capable Of Operating Up To 1000 C$95K
Sep 2016Federal contractDefense · Igf::ot::igf Vacuum Compatible High Gradient Insulators- SBIR II$750K
Jul 2016Federal grantDefense · Phase I · Reliable UHTC Ceramic-Metal Joints for Hypersonic Applications$80K
Jun 2016Federal grantNASA · Phase I · Long Life Cathode Heaters for Hollow Cathodes$125K
Aug 2015Federal contractDefense · Igf::ot::igf SBIR 1- Vacuum Compatible High Gradient Insulators$150K
Aug 2014Federal contractNASA · Sic Sensors$89K
Jun 2014Federal contractNASA · Igf::ot::igf The Development Of An Advanced Green Monopropellant Propulsion System Could Have Significant Benefits To A Wide Range Of NASA Space Missions, From Deep Space Satellites To Manned Space Vehicles. However, The State-of-the-art Thruster Materials, Refractory Metals, Cannot Withstand AF-M315E Combustion Environment At Temperatures OF>2000?C Without Loosing Their Mechanical Integrity. Sienna Technologies, Inc, In Collaboration With Moog-isp, Proposes To Develop A Revolutionary Refractory$125K
Jun 2014Federal contractNASA · Igf::ot::igf Silicon Carbide Sensors$29K
May 2014Federal contractNASA · Packaging Of Sic Electronics$24K
Apr 2014Federal contractNASA · Igf::ot::igf NASA Missions For Planetary Exploration Require High Power, Long-life Hall Thrusters. However, Thruster Power And Lifetime Are Limited By The Erosion Of Plasma Channel Walls. Current Plasma Channel Insulators, Bn Or Borosil, Have The Required Low Secondary Electron Emission (see) But Are Susceptible To Xenon Plasma Erosion. Aln Has Exceptionally High Plasma Erosion Resistance But Suffers From High See Yield. Aln Can Be A "revolutionary" Replacement For Bn Channel Insulator Since It $750K
Aug 2013Federal contractDefense · SBIR Phase II Research&dev For Proposal B2-1941 Entitled: High Performance Thrusters For Dacs Propulsion. Igf::ot::igf$995K
Jun 2013Federal contractDefense · Status Report$80K
May 2013Federal contractNASA · Igf::ot::igf Thruster Power And Lifetime Are Limited By The Erosion Of Plasma Channel Walls. Current Plasma Channel Insulator Materials, Such As Bn Or Borosil, Have The Required Low Secondary Electron Emission (see) But Are Susceptible To Xenon Plasma Erosion. New Plasma Channel Insulator Materials With Low See Yield And High Xenon Plasma Erosion Resistance Are Needed To Increase The Efficiency And The Lifetime Of Hall Thrusters. Aln Has An Exceptionally High Plasma Erosion Resistance But Suffer$125K
Nov 2012Federal contractNASA · Substrates Robert Okojie, Bldg. 77, Rm. 210, 3-6522$12K
Apr 2012Federal contractNASA · Sic Packages Using Mems-dca-xl$53K
Jan 2012Federal contractDefense · Ph I Research&development$150K
Jul 2011Federal contractNASA · Packaging Of Sensors$73K
Mar 2011Federal contractNASA · Gold Bond Wire And Platinum Thermocouple Wire$9K
Feb 2011Federal contractNASA · This SBIR Phase I Program Will Identify The Joining Materials And Demonstrate The Processes That Are Suited For Construction Of Advanced Ceramic Matrix Composite (cmc) Thrusters For Advanced Monopropellants And Bipropellants For Space Propulsion. We Will Join Cmcs To Each Other And To Superalloys By Brazing. In Phase I, We Will Experimentally Evaluate And Identify Suitable Active Metal Braze Alloys Through Wetting Experiments, Brazing, Microstructural Examination, And Shear Strength Measurements$100K
Aug 2010Federal contractNASA · Pressure Sensors- Sienna Tech$40K
Mar 2010Federal contractNASA · Tube Mount Pressure Sensor Packaging$16K
Jan 2010Federal contractNASA · The Proposed Program Will Develop Highly Reliable, Hermetic, SI3N4 Ceramic Multichip Modules To Integrate Commercially Available Sic Power Devices To Build Power Electronic Modules For Reliable Operation Above 500A C In Extreme Environments Of Space Exploration. The Phase I Program Will Demonstrate A Reliable Direct Bond Copper (dbc) Process For SI3N4 Substrates, Develop High Current Carrying Hermetic Feedthroughs, An Innovative Transient Liquid Phase (tlp) Die Attach, And A Monometallic Wire Bo$100K
Nov 2009Federal contractNASA · TAS::80 0123::TAS The Proposed Program Will Develop An Hermetic, Cte Matched, Thermal Shock Resistant Ceramic Packaging Technology That Will Facilitate The Operation Of Si And Sige Devices At Extreme Temperatures (-230 C To 130 C) Encountered On The Moon And Mars. Processes That Were Developed In Phase I To Assemble The Components Into A Hermetically Sealed Package Will Be Used To Package Sige Operational Amplifiers. Process And Materials Reliability Will Be Demonstrated By Fabricating And Te$600K
Feb 2009Federal contractNASA · Silicon Carbide Pressure Sensors$50K
Feb 2009Federal contractNASA · Sicflox Strip Devices, Pressure Sensors And Tooling$25K
Feb 2009Federal contractNASA · A High Performance Cathode Heater For Hall Thrusters The Current State-of-the-art Co-axial Swaged Tantalum (ta) Heaters Use Magnesium Oxide (mgo) Insulators, Which Limits Their Operation To Temperatures Well Below 1300A Degrees C To Prevent Undesirable Chemical Reactions Between Mg And Ta And Heater Failure. This Program Will Develop A New Ceramic Insulator That Is Chemically Compatibility With Ta And Has High Thermal Stability At Temperatures Of 1300A Degrees C-1600A Degrees C For Swaged Heate$600K
Oct 2008Federal contractDefense · (STTR Phase 1 FY08) Nonlinear Dielectic Nanocomposites For High Frequency Operation$100K
Jul 2008Federal contractDefense · Final Report STTR Topic N08-T003$70K
Jul 2008Federal contractNASA · This Task Shall Provide 12 Packaged Pressure Transducers Comprising Of Absolute Pressure Sensing. The Package Configuration Shall Be A Modification Of Existing Geometry To Have Curvature To Remove The Notched Corners (see Attached). The Vendor Shall Fabricate An Aluminum Nitride (aln) Package That Would House A Silicon Carbide Chip. With The Sensor Attached To The Aln Header Tip, The Packaged Sensor Shall Operate At Maximum Of 800 C. The Glassing That Holds The Sensor Chip In Place Shall Have $25K
Jun 2008Federal contractNASA · Packaging Of Sic Electronics And Capacitors$23K
Jun 2008Federal contractDefense · SBIR Phase I Af Topic No. 081-061$100K
Feb 2008Federal contractNASA · A High Performance Cathode Heater For Hall Thrusters$100K
Jan 2008Federal contractNASA · A Reliable Electronic Package For Space Exploration$100K
Apr 2007Federal contractNASA · Sap Purchase Requisition: 4200194615 High Temp Mems-dca Sic Pressure Sensors$50K
Sep 2006Federal contractDefense · 200612!005750!2100!W31P4Q!USA Aviation And Missile COMMAND!W31P4Q06C0500 !a!n! !n! ! !20060914!20080929!015577190!015577190!015577190!N!SIENNA Technologies, Inc !19501 144TH Ave Ne Ste F50!WOODINVILLE !WA!98072!79590!033!53!WOODINVILLE !king !WASHINGTON!+000000434525!N!N!000000000000!AD92!RDTE/OTHER Defense-applied Research !A2 !missile And Space Systems !000 !not Discernable !541330!E! !3! ! ! ! ! !999$729K
Jun 2006Federal contractDefense · 200609!443886!1700!N68335!NAVAL Air Engineering Station !N6833506C0166 !a!n! !y! ! !20060612!20080612!015577190!015577190!015577190!N!SIENNA Technologies, Inc !19501 144TH Ave Ne Ste F50!WOODINVILLE !WA!98072!79590!033!53!WOODINVILLE !king !WASHINGTON!+000000500000!N!N!000000749998!AC62!RDTE/ELECTRONICS & Communication Eq-applied Resea !A7 !electronics And Communication Equip !000 !not Discernable !541710!E! !3! ! ! ! ! !999$750K
Mar 2005Federal contractDefense · 200506!163924!1700!N68335!NAVAL Air Engineering Station !N6833505C0178 !a!n! !y! ! !20050321!20050921!015577190!015577190!015577190!N!SIENNA Technologies, Inc !19501 144TH Avenue Ne, Ste!woodinville !WA!98072!79590!033!53!WOODINVILLE !king !WASHINGTON!+000000079997!N!N!000000000000!AC61!RDTE/ELECTRONICS & Communication Eq-basic RESEARCH!A7 !electronics And Communication Equip !000 !* !541710!E! !3! ! ! ! ! !202$150K
Dec 2004Federal contractDefense · 200510!000047!5700!FA9300!AFFTC/PKT !FA930005C0002 !a!n! !y! ! !20041210!20070220!015577190!015577190!015577190!N!SIENNA Technologies, Inc !19501 144TH Avenue Ne, Ste!woodinville !WA!98072!79590!033!53!WOODINVILLE !king !WASHINGTON!+000000749372!N!N!000000749372!AC22!RDTE/MISSILE And Space Systems-applied Research !A2 !missile And Space Systems !000 !* !541710!E! !3! ! ! ! ! !202$749K
Jul 2003Federal contractNASA · Packaging Of Sic Pressure Sensors Funded Under The Glennan Micro Systems Initiative$235K

Federal awards are summed by year (56 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.

1 record has no date or no amount, so it isn’t placed on the timeline.

Standing among 14 peers

Line = median

Aerospace · Material

Federal grantsBelow median
Granted patents#2 · top 14%
Linked publications#1 · top 7%

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 · 1 granted of 2

Jan 2, 2018GrantedHigh Temperature Catalysts For Decomposition Of Liquid Monopropellants And Methods For Producing The SameUSPTOUS 9,855,548
Jan 21, 2016PendingCorrosion Resistant Catalysts for Decomposition of Liquid MonopropellantsUSPTOApplication 14488070

Recent research by its founders

Demonstration of System Technologies Enabling Millimeter Wave Power Beaming Using Thermomechanical Power Conversion20243 cites
Observed reduction in fracture toughness of AlN and AlN–Mo ceramic matrix composites with carbon additive20232 cites
High temperature W-band complex permittivity measurements of thermally cycled ceramic-metal composites: AlN:Mo with 0.25 to 4.0 vol% Mo from 25 °C to 1000 °C in air202112 cites

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Regulatory activity · Aerospace

Sector-level, not company-level

06 Jul 2026Nondiscrimination in Federally Assisted Programs of NASA-Effectuation of Title VI of the Civil Rights Act of 1964National Aeronautics and Space Administration
01 Jul 2026Special Conditions: AMAC Aerospace, The Boeing Company Model 747- 8 Airplane; Side-Facing SeatsFederal Aviation Administration
26 Jun 2026Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous AmendmentsFederal Aviation Administration
23 Jun 2026Operating Limitations at John F. Kennedy International AirportFederal Aviation Administration
23 Jun 2026Operating Limitations at New York LaGuardia AirportFederal Aviation Administration
18 Jun 2026Special Conditions: Honeywell Aerospace US LLC, Dassault Aviation Model Falcon 900EX Airplane; Electronic System Security Protection From Unauthorized External AccessFederal Aviation 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.