Koloma
Natural hydrogen extraction and production system from subsurface geological formations
- Sector
- Energy
- Headquarters
- Denver, CO
- Founded
- 2021
- Latest Form D
- $52.4M, Oct 2024
- Total capital
- $394M
- Federal grants
- None on recordNo awards found in SBIR/STTR, NIH, NSF or DoD records.
- Private capital raised
- $394M
- 6 Form D · last Oct 2024
- 24 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 9
- 31 pending · first 2025
- Rank in peer group#3 of 19
Capital timeline
Latest events
- Private capital raisedForm D · SEC · 6th filing$52.4M
- Private capital raisedForm D · SEC · 5th filing$246M
- Private capital raisedForm D · SEC · 4th filing$30M
- Private capital raisedForm D · SEC · 3rd filing$55.7M
- Private capital raisedForm D · SEC · 2nd filing$5.7M
- Private capital raisedForm D · SEC · 1st filing$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 19 peers
Line = medianEnergy · Platform
- Granted patents#3 · top 16%
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
Researcher links verified by same-company patents and grants- Thomas L. DarrahResearcherExecutive OfficerLinked by 2 patents
- Carrie L. HudakExecutive OfficerNamed in SEC Form D filings
- Charles GriffieDirectorNamed in SEC Form D filings
- Christian GarciaDirectorNamed in SEC Form D filings
- Duane DicksonDirectorNamed in SEC Form D filings
- James FarnsworthDirectorNamed in SEC Form D filings
Show all 13 people
- Jeff KnuppExecutive OfficerNamed in SEC Form D filings
- John Duane DeutchDirectorNamed in SEC Form D filings
- Lisa StewartDirectorNamed in SEC Form D filings
- Paul L. HarrakaExecutive OfficerNamed in SEC Form D filings
- Peter L. JohnsonExecutive Officer, DirectorNamed in SEC Form D filings
- Robert Duane DicksonDirectorNamed in SEC Form D filings
- Shayle KannDirectorNamed in SEC Form D filings
What it has protected
USPTO · 9 granted of 40- GrantedExtraction And Integration Of Waste Heat From Enhanced Geologic Hydrogen ProductionUSPTOUS 12,716,339
- PendingExtraction And Integration Of Waste Heat From Enhanced Geologic Hydrogen ProductionUSPTOApplication 19645715
- GrantedHydrogen Enhanced Geothermal Power ProductionUSPTOUS 12,703,627
Show all 40 patent records
- Extraction And Integration Of Waste Heat From Enhanced Geologic Hydrogen ProductionAug 25, 2026 · US 12,716,339Granted
- Extraction And Integration Of Waste Heat From Enhanced Geologic Hydrogen ProductionAug 13, 2026 · Application 19645715Pending
- Hydrogen Enhanced Geothermal Power ProductionAug 11, 2026 · US 12,703,627Granted
- Systems And Methods For Enhanced Detection And Quantification Of Chemical SpeciesJul 9, 2026 · Application 19555642Pending
- Systems And Methods For Discovering And Recovering Subsurface Fluids And Verification Of Subsurface Storage FluidsJul 7, 2026 · US 12,674,391Granted
- Systems And Methods For Evaluating Hydrogen Generation Potential From Rocks In Geologic Hydrogen Production Systems Using Gas PropertiesApr 30, 2026 · Application 19372157Pending
- Systems And Methods For Evaluating Hydrogen Generation Potential From Rocks For Natural Hydrogen ExplorationApr 30, 2026 · Application 19293926Pending
- Systems And Methods For Evaluating Hydrogen Generation Potential Using Magnetic Susceptibility And Gravity Measurements For Geologic Hydrogen ExplorationApr 30, 2026 · Application 19372251Pending
- Systems And Methods For Evaluating Hydrogen Generation Potential Using Magnetic Susceptibility And Gravity Measurements For Natural Hydrogen ExplorationApr 30, 2026 · Application 18943774Pending
- Systems And Methods For Evaluating Hydrogen Generation Potential From Rocks In Natural And Enhanced Hydrogen Production Systems Using Gas PropertiesApr 30, 2026 · Application 19317967Pending
- Hydrogen Production And Sulfur-carbon SequestrationApr 23, 2026 · Application 19423490Pending
- Systems And Methods For Discovering And Recovering Subsurface Fluids And Verification Of Subsurface Storage FluidsApr 16, 2026 · Application 19421842Pending
- Systems And Methods For Enhanced Detection And Quantification Of Chemical SpeciesMar 31, 2026 · US 12,590,941Granted
- Systems And Methods For Production Of Low Carbon Intensity Hydrogen From Geologic SourcesFeb 26, 2026 · Application 19309315Pending
- Hydrogen Production And Sulfur-carbon SequestrationJan 20, 2026 · US 12,529,290Granted
- Systems And Methods For Discovering And Recovering Subsurface Fluids And Verification Of Subsurface Storage FluidsJan 13, 2026 · US 12,523,148Granted
- Systems And Methods For Production Of Low Carbon Intensity Hydrogen From Geologic SourcesNov 27, 2025 · Application 18943617Pending
- Systems And Methods For Evaluating Hydrogen Generation Potential From Rocks In Natural And Enhanced Hydrogen Production Systems Using Gas PropertiesSep 30, 2025 · US 12,429,473Granted
- Systems And Methods For Evaluating Hydrogen Generation Potential From Rocks For Natural Hydrogen ExplorationAug 26, 2025 · US 12,399,139Granted
- Extraction And Integration Of Waste Heat From Enhanced Geologic Hydrogen ProductionJun 5, 2025 · Application 19054622Pending
- Extraction And Integration Of Waste Heat From Enhanced Geologic Hydrogen ProductionMar 18, 2025 · US 12,252,970Granted
- Systems And Methods For Producing Renewable AmmoniaFeb 20, 2025 · Application 18721096Pending
- Production Of Renewable AmmoniaMay 9, 2024 · Application 18264920Pending
- Systems And Methods For Monitoring, Quantitative Assessment, And Certification Of Low-carbon Hydrogen And Derivative ProductsDec 7, 2023 · Application 18206969Pending
- Integration Of Natural Hydrogen Reservoir Storage Capacity Or Suitable Subsurface Reservoirs With Other Hydrogen Sources And SinksDec 7, 2023 · Application 18206938Pending
- Hydrogen Production And Sulfur-carbon SequestrationApplication PCTUS2023018331Pending
- Systems And Methods For Discovering And Recovering Subsurface Fluids And Verification Of Subsurface Storage FluidsApplication PCTUS2023016610Pending
- Methods And Systems For Utilizing And Integrating Waste Heat From Topside Serpentinization And Decarbonation ReactionsApplication 63349897Pending
- Extraction And Integration Of Waste Heat From Enhanced Geologic Hydrogen ProductionApplication 63349901Pending
- Hydrogen Enhanced Geothermal Power ProductionApplication 63349905Pending
- Integration Of Natural Hydrogen Reservoir Storage Capacity Or Suitable Subsurface Reservoirs With Other Hydrogen Sources And SinksApplication 63349892Pending
- Systems And Methods For Monitoring, Quantitative Assessment, And Certification Of Low-carbon Hydrogen And Derivative ProductsApplication 63349888Pending
- Systems And Methods For Quantitative Assessment And Monitoring Of The Source, Residence Time, And Saturation Conditions Of Hydrogen In Natural Gas And Other Subsurface Fluids And Quantification And Verification Of Carbon Dioxide Sequestration In Subsurface FormationsApplication 63349890Pending
- Surface Integrations With Various Forms Of Surface And Subsurface Hydrogen Generation MechanismsApplication 63349883Pending
- Heat Assisted Enhanced Hydrogen ProductionApplication 63330216Pending
- Heat Assisted Dihydrogen Sulfide And Dihydrogen Sulfide-carbon Dioxide Mixtures In Enhanced Hydrogen ProductionApplication 63330223Pending
- Dihydrogen Sulfide And Dihydrogen Sulfide-carbon Dioxide Mixtures In Enhanced Hydrogen ProductionApplication 63330220Pending
- Systems And Methods For Recovering Subsurface Hydrogen And Carbon Dioxide Resources And Verification Of Carbon Mineral SequestrationApplication 63325094Pending
- Production Of Renewable Nitrogenous ProductsApplication 19493367Pending
- Production And Use Of Aqua-ammonia For Storage Of Energy Or HydrogenApplication 19517666Pending
Related companies, and why
- Blue Energy Global Inc.Similar federal contract value in Energy · null in contracts
- Paisano Labs LLCSimilar federal contract value in Energy · null in contracts
- ARCTURA, INC.Similar federal contract value in Energy · null in contracts
- AQUANRG CONSULTING INC.Similar federal contract value in Energy · null in contracts
- Parthian Battery Solutions, LLCSimilar federal contract value in Energy · null in contracts
- LUCELO TECHNOLOGIESSimilar federal contract value in Energy · null in contracts
Regulatory activity · Energy
- Air Plan Approval; Michigan; Redesignation and Maintenance Plan for the Partial St. Clair 2010 1-Hour Sulfur Dioxide (SO2) NAAQS Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Delaware; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plan for the Philadelphia Nonattainment AreaEnvironmental Protection Agency
- Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP ProvisionsEnvironmental Protection Agency
- List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR® Storage System, Certificate of Compliance No. 1031, Amendment Nos. 16 and 17 and Revisions to Amendment Nos. 0 Through 16Nuclear Regulatory Commission
- Epyrifenacil; Pesticide TolerancesEnvironmental Protection Agency
- Fluoxapiprolin; 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 . SBIR and STTR awards through .