SEQUOIA SCIENTIFIC, INC

BELLEVUE, WA · Clean tech · Private

A low-cost optical sensor that detects sinking particulate matter (marine snow) in the ocean to measure biological carbon sequestration

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Updated Oct 23, 2026 · sequoiasci.com

Sector: Clean tech
Headquarters: BELLEVUE, WA
Total capital: $9.9M

Federal grants: $2.2M; 5 awards · 2017–2026; Rank in peer group#12 of 12
Private capital raised: None on recordNo Form D filings on SEC EDGAR. Some raises are not filed.
Federal contracts: $7.7M; 89 awards · Defense, Interior, Agriculture; Rank in Clean tech#17 of 914
Granted patents: 0; 2 pending

Capital timeline

Latest events

Sep 2026Federal grantNASA · Phase I · SBIR Phase I In-situ Polarized Hyperspectral Volume Scattering Function (vsf) Sensor$225K
Aug 2026Federal contractEnvironmental Prot · Purchase Of A Hyper-bb Hyper-spectral Scatter And The LISST-200X Submersible Particle Size Analyzer And Other Equipment For Use On Board The Epa Research Vessel Lake Guardian.$128K
Aug 2025Federal contractNASA · Phase II SBIR 80NSSC25C0047 In-situ Hyperspectral Transmissometer For Ocean Iop Closure$849K
Aug 2025Federal grantNASA · Phase II · Phase II SBIR 80NSSC25C0047 In-situ Hyperspectral Transmissometer For Ocean Iop Closure$849K
Jun 2025Federal contractNASA · Sequoia HYPER-BB2 Purchase$40K
May 2025Federal contractInterior · Mrg Lisst-abs Sensors Servicing$3K
Feb 2025Federal contractNASA · Monthly Rental Of Hyper Bb Instrument$31K

Show 86 earlier federal awards

Aug 2024Federal contractNASA · FY24 SBIR Phase I- In-situ Hyperspectral Transmissometer For Ocean Iop Closure$150K
Aug 2024Federal grantNASA · Phase I · FY24 SBIR Phase I- In-situ Hyperspectral Transmissometer For Ocean Iop Closure$150K
May 2024Federal contractDefense · Urgent Repair S LISST-HOLO2 Instrument, In Support Of The Pace Cal/val Project.$5K
Feb 2024Federal contractNASA · Hyper-a Submersible Hyperspectral Absorption And L-200X Large External Battery Housing$71K
Feb 2024Federal contractNASA · Ot : Hyperbb Submersible Multispectral Backscatter$98K
Sep 2023Federal contractInterior · Sequoia, Seq-fp-abs L-abs Acoustic Backscatter Or Equal Iaw Salients FY23 Req # 15030 Special Order # S23144$48K
May 2023Federal contractInterior · Acoustic Backscatter Sensor And Accessories In Accordance With Salients FY23 Req # 14860 Special Order # S23087$90K
Jan 2023Federal contractInterior · Purchase Of Lisst-black Instrument$65K
Dec 2022Federal contractNASA · Lisst-vsf - Submersible Ocean Instrument To Measure The Volume Scattering Function Of Particles$145K
Jul 2022Federal contractCommerce · Purchase Of LISST-200X Submersible Particle Size Analyzer$40K
Jun 2022Federal contractDefense · Lisst-portable Xr Particle Size Analyzer$33K
Jan 2022Federal grantNSF · Phase I · STTR Phase I:Bio-optical Sensor for the Direct Detection of Sinking Marine Particles$254K
Nov 2021Federal contractInterior · Acoustic Backscatter And Optical Turbidity Sensor$32K
Nov 2021Federal contractNASA · LISST-200X With Accessories And A Hyper-bb Calibration Tank$62K
Jul 2021Federal contractNASA · Ot In-situ Hyperspectral Absorption Instrument In Support Of Ocean Color And Biogeochemistry$750K
Jun 2021Federal contractInterior · Sensors$71K
Jun 2021Federal contractInterior · Sediment Sensor$48K
Feb 2021Federal contractDefense · P/n# SVC-LH2-X, L-HOLO2 Service/repair$17K
Dec 2020Federal contractEnvironmental Prot · Sediment Size Distribution Sensor$39K
Nov 2020Federal contractInterior · Sediment Size Distribution Sensor$43K
Aug 2020Federal contractNASA · In-situ Hyperspectral Absorption Instrument In Support Of Ocean Color And Biogeochemistry$125K
Mar 2020Federal contractEnvironmental Prot · LISST-200X Sediment Size Distribution Sensor$39K
Aug 2019Federal contractDefense · Imaging System Pr# 72-3020-19$42K
Jun 2019Federal contractInterior · LISST-200X Sediment Distribution Sensor$75K
Apr 2018Federal contractInterior · Submersible Acoustic Backscatter Sensor-exp FY18 REQ#11830 Special Order #S18063$5K
Feb 2018Federal contractCommerce · Purchase Of List 200X With Installation Into Glider.$71K
Aug 2017Federal contractCommerce · Hydrolight - Echolight Software To Be Used For Habs Program$10K
Aug 2017Federal contractInterior · Sensor With Flow-through Chamber$38K
Jun 2017Federal contractInterior · Req# 11158 Special Order #S17049$13K
Jun 2017Federal contractDefense · LISST-200X Sediment Size Distribution$37K
Apr 2017Federal contractCommerce · 3.IGF::OT::IGF 3 Month Rental Of Lisst 200X Particle Analyzer.$15K
Apr 2017Federal grantNASA · Phase II · Investigating an Instrument for Measurement of Hyperspectral Backscattering in Natural Waters$735K
Apr 2017Federal contractNASA · Igf::ot::igf Hydrolight Software$10K
Nov 2016Federal contractInterior · Purchase Of Sequoia Acoustic Backscatter Sediment Sensor. (or Equal Accepted)$5K
Aug 2016Federal contractInterior · Purchase Of Sequoia Scientific Acoustic Backscatter Sensors.$5K
Jun 2016Federal contractInterior · Suspended Sediment Sensor$9K
Jun 2016Federal contractNASA · Igf::ot::igf The Remote Sensing Reflectance Signal Measured By An Ocean Color Satellite Is To First Order Proportional To The Ratio Of Backscattered To Absorbed Light. Therefore In Situ Measurements Of Absorption And Backscattering, As Functions Of Wavelength, Along With In Situ And Satellite Radiometery, Are Key To Refinement And Calibration Of Legacy Ocean Color Algorithms, As Well As Development Of Next Generation Ocean Color Products Such As Phytoplankton Functional Type. Currently, Commer$121K
Apr 2016Federal contractNASA · Igf::ot::igf Particle Size Distribution (psd) Is A Fundamental Environmental Measurement, With Diverse Biogeochemical Applications Including Carbon Cycle Science, Ecosystem And Fisheries Modeling, And Harmful Algal Bloom (hab) Detection/prediction. There Is Optimism That Estimates Of Psd Will Be Available From Ocean Color Measurements (such As Nasa's Upcoming Pace Mission), And Will Be Able To Help Constrain Global-scale Ecosystem/carbon Models And Estimates Of Primary Production. However, Natur$743K
Nov 2015Federal contractInterior · Purchase Of Acoustic Backscatter Sensor.$5K
Aug 2015Federal contractInterior · Purchase Of Sequoia Acoustic Backscatter Sensors And Related Equipment.$18K
Jun 2015Federal contractNASA · Igf::ot::igf Particle Size Distribution (psd) Is A Fundamental Environmental Measurement, With Diverse Biogeochemical Applications Including Carbon Cycle Science, Ecosystem And Fisheries Modeling, And Harmful Algal Bloom (hab) Detection/prediction. There Is Optimism That Estimates Of Psd Will Be Available From Ocean Color Measurements (such As Nasa's Upcoming Pace Mission), And Will Be Able To Help Constrain Global-scale Ecosystem/carbon Models And Estimates Of Primary Production. However, Natur$124K
Nov 2014Federal contractDefense · Optical Path$37K
Nov 2014Federal contractNASA · LISST-I00X Sediment Size Distribution Sensor (1 Each) Full Path Flow Through Ghamber For LISST-100X (1 Each) Custom Gable For Gonnecting LISST-I00X To DH-4 (1 Each) Shipping And Handling$37K
Aug 2014Federal contractInterior · Lisst Instrument Repair Work Igf::ot::igf$4K
Jul 2014Federal contractDefense · Furnish And Deliver Sediment Size Distribution Sensors For Chl U430450$73K
Dec 2013Federal contractNASA · Flowcontrol Custom Modifications To Flowcontrol$11K
Sep 2013Federal contractDefense · Igf: Ot = Other Functions. Lisst Repair$21K
May 2013Federal contractDefense · Imaging System$24K
May 2013Federal contractNASA · Igf::ot::igf We Propose To Develop An Active Sensor For In Situ Measurement Of The Inherent Optical Properties (iops) Absorption And Backscattering At Multiple Wavelengths. Multi- Or Hyper-spectral Absorption Of Particles And Dissolved Materials Is Routinely Measured In The Laboratory And In Situ In Order To Characterize, For Example, The Quantities And Types Of Phytoplankton Based On Concentrations Of Specific Absorbing Pigments. Similarly, Backscattering Is Employed To Estimate The Concentrati$124K
Dec 2012Federal contractDefense · Lisst-vsf$75K
Sep 2012Federal contractDefense · TAS::96 3123::TAS Sequoia Scientific Laser Insitu Suspended Sediment Transmisometry- Streamlined (model Number: Lisst-sl).$34K
Jul 2012Federal contractInterior · Lisst-streamside Particle Size Analyzer$16K
Jul 2012Federal contractCommerce · Supplies And Service To Laser In-situ Scattering Transmissometer (lisst) Instrument.$3K
Apr 2012Federal contractDefense · Meter$60K
Feb 2012Federal contractInterior · Lisst - 100X Sediment Size Sensor$30K
Jan 2012Federal contractInterior · Lisst-streamside Sediment Analyser$16K
Oct 2011Federal contractNASA · The Proposed Research Comprises Two Separate Tasks, Each Of Which Will Improve Ocean Color Remote Sensing. Task 1 Uses Radiative Transfer Modeling With The Existing Hydrolight Radiative Transfer Code To Enhance The NASA Seawifs Par (photosynthetically Available Radiation) Product. Task 2 Develops A Vector (polarized) Version Of The Hydrolight Code As Needed For Simulation Of At-sensor Radiances Measured In A Coupled Ocean-atmosphere System. The Present Seawifs Daily Averaged Par Product Is Based$313K
Sep 2011Federal contractInterior · Lisst Analyzer&pump$16K
Aug 2011Federal contractInterior · Lisst Streamside Particle Size Analyzer$16K
Jul 2011Federal contractDefense · U436430 FY11-DSAB-LISST-$35K
Feb 2011Federal contractInterior · LISST-25X$10K
Sep 2010Federal contractAgriculture · LISST-100X Sediment Size Distribution Sensor$29K
Aug 2010Federal contractInterior · Sediment Analizer$29K
Jul 2010Federal contractInterior · Holographic Camera$25K
Jul 2010Federal contractCommerce · Deepwater Horizon R/v Bigelow$29K
Jun 2010Federal contractInterior · Portable Particle Size Analyzer.$19K
Mar 2010Federal contractDefense · Research And Development In The Physical, Engineering, And Life Sciences (except Biotechnology)$410K
Jan 2010Federal contractInterior · Stream Side Flow Through Particle Size Analyzer And Submersible Well Pump.$16K
Dec 2009Federal contractInterior · LISST-25X Suspended Sediment Sensor$10K
Sep 2009Federal contractNASA · TAS::80 0119::TAS This Work Concerns The Development Of A Prototype Of A Volume Scattering Function (vsf) Sensor For Measurement Of This Inherent Optical Property(iop) Of Seawater. The Proposed Prototype Combines New Development From Phase-i With Our Existing Technology To Extend Existing Capability For Measuring Vsf From 0.1 To 20 Degrees, Out To 170 Degrees. We Have Developed A New And Innovative Sensor Module That Permits High Sub-degree Angular Resolution Measurement Of Vsf. The System Is Si$600K
Aug 2009Federal contractDefense · Research And Development In The Physical, Engineer$17K
Aug 2009Federal contractAgriculture · Ss-lisst-streamside-us-lisst-steamside For US Clients, Ss-lisst-streamdide-pump$16K
May 2009Federal contractInterior · 09-9938-3354 Sediment Sensor$34K
Jan 2009Federal contractDefense · Research And Development In The Physical, Engineering, And Life Sciences (except Biotechnology)$159K
Jan 2009Federal contractInterior · Scientific Instrument$34K
Jan 2009Federal contractInterior · Upgrade To LISST-100X$5K
Oct 2008Federal contractInterior · Repair Of Specialized Equipment -- New Parts Provided$8K
Sep 2008Federal contractInterior · Usgs Requires A Field Ready Laser In-situ Scattering And Transmissometry (lisst) Sediment Study. The Device Must Be Compatible With Lisst 100$19K
Aug 2008Federal contractInterior · Particle Size Analyzer$19K
Aug 2008Federal contractDefense · Lab Equip$5K
Jul 2008Federal contractInterior · LISST-100X Submersible Sediment Size Distribution Sensor$36K
Jan 2008Federal contractInterior$16K
Dec 2007Federal contractDefense · Research And Development In The Physical, Engineering, And Life Sciences (except Biotechnology)$428K
Nov 2007Federal contractDefense · Research And Development In The Physical, Engineering, And Life Sciences (except Biotechnology)$77K
Aug 2007Federal contractInterior · 07-9938-3903 - Equipment Upgrade From LISST-100X To Lisst-infinite$16K
May 2006Federal contractDefense · Research And Development In The Physical, Engineering, And Life Sciences$307K

Federal awards are summed by year (93 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 12 peers

Line = median

Clean tech · Instrument

Federal grantsBelow median

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 · 0 granted of 2

May 28, 2026PendingOptical Sediment Trap Sensor And Wiper AssemblyUSPTOApplication 19397655
PendingOptical Sediment Trap Sensor And Wiper AssemblyUSPTOApplication 63724610

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Regulatory activity · Clean tech

Sector-level, not company-level

09 Jul 2026Air Plan Approval; Michigan; Redesignation and Maintenance Plan for the Partial St. Clair 2010 1-Hour Sulfur Dioxide (SO2) NAAQS Nonattainment AreaEnvironmental Protection Agency
02 Jul 2026Air Plan Approval; Delaware; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plan for the Philadelphia Nonattainment AreaEnvironmental Protection Agency
02 Jul 2026Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP ProvisionsEnvironmental Protection Agency
30 Jun 2026Epyrifenacil; Pesticide TolerancesEnvironmental Protection Agency
30 Jun 2026Fluoxapiprolin; Pesticide TolerancesEnvironmental Protection Agency
30 Jun 2026Chlormequat Chloride; Pesticide TolerancesEnvironmental Protection Agency

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.