Diligence report Aerospace, supersonic aircraft, propulsion, and industrial power turbines Private late-stage unicorn

Boom Supersonic

Boom Supersonic Startup Diligence Report

The diligence case turns on whether Boom can convert major technical milestones and airline interest into a certifiable, manufacturable, economically viable supersonic airliner while funding a long, high-risk aerospace development cycle through private capital and the newer Superpower turbine business.

Company profile

Boom Supersonic Startup Diligence Report

Boom is publicly eligible for private unicorn diligence: CB Insights lists Boom as a current $1.5B unicorn, Boom's website and press releases show an active company based in Denver, and public evidence supports ongoing Overture, Symphony, XB-1, Superfactory, airline, government, supplier, and Superpower turbine programs.

Website: boomsupersonic.com
Sector: Aerospace, supersonic aircraft, propulsion, and industrial power turbines
Geography: United States / global airline market
Stage: Private late-stage unicorn
Known aliases: Boom, Boom Technology, Inc., Boom Supersonic
Report version: 1.0
Timezone: UTC

Executive summary

Strengths

CB Insights provides the public unicorn-list valuation anchor of $1.5B.
Boom's January 2025 release reports XB-1 reached Mach 1.122 and became the first independently developed supersonic jet to break the sound barrier.
Public sources document airline relationships with United, American, and Japan Airlines and Boom's aggregate 130-aircraft order-book claim.

Risks

Funding, burn, cap-table, and valuation support are opaque for a capital-intensive aircraft and engine program.
FAA/EASA certification, safety, engine, noise, emissions, and boomless-cruise execution risks remain high.
Airline order book quality depends on conditions, deposits, cancellation rights, aircraft economics, SAF availability, and delivery timing.

Gaps

Audited financials, cash, debt, burn, runway, aircraft program cost-to-complete, Superpower margins, capex, and financing plan.
Cap table, preference stack, current valuation support, investor rights, employee equity, and debt or off-balance-sheet obligations.
Signed airline purchase/pre-order agreements, deposits, refundability, delivery schedule, conditions precedent, aircraft price, and customer reference calls.
FAA/EASA certification plan, safety assessments, engine test data, XB-1 test report, Overture design maturity, noise/emissions analysis, and manufacturing quality plans.
Supplier contracts, long-lead commitments, Superfactory tooling and production readiness, IP ownership, insurance, regulatory/legal schedule, and employee/leadership data.

Recommended next steps

Run a full aerospace technical diligence workstream covering Overture, Symphony, XB-1, Boomless Cruise, certification, safety, noise, SAF, and manufacturing readiness.
Reconcile the $1.5B unicorn valuation and 2025 $300M financing to program cash needs, aircraft backlog conversion, Superpower economics, and investor preferences.
Validate airline and government customer commitments directly with United, American, Japan Airlines, and the U.S. Air Force or their procurement teams.
Review Superpower backlog, Crusoe order, Baker Hughes generator order, and whether turbine revenue can realistically fund aircraft certification.
Benchmark Boom against aerospace incumbents, Aerion's shutdown precedent, NASA/Lockheed X-59, and subsonic premium-air-travel alternatives.

Risk register

critical medium likelihood

R-004: Certification, safety, engine, noise, and flight-test execution

Overture and Symphony require FAA/EASA certification; XB-1 milestones do not eliminate certification, safety, engine durability, noise, and emissions risk.

Diligence request: Run aerospace technical diligence on certification basis, safety analyses, engine tests, acoustic data, and regulator correspondence.

high high likelihood

R-001: Capital intensity, burn, and valuation opacity

Aircraft, engine, Superfactory, and turbine programs are capital-intensive; financials, cash, debt, and cap table are private.

Diligence request: Request financials, cash, debt, burn, program cost-to-complete, cap table, financing docs, and valuation support.

high medium likelihood

R-002: Superpower turbine commercialization and funding bridge risk

Boom's public funding narrative depends on Superpower backlog and revenue helping fund Overture certification.

Diligence request: Review Crusoe contract, backlog terms, turbine margins, production plan, warranty obligations, and cash-flow bridge.

high medium likelihood

R-005: Airline order-book quality and conversion

Public order-book claims may include conditional orders, options, and pre-orders that depend on certification, economics, and delivery timing.

Diligence request: Review contracts, deposits, pricing, conditions, cancellation rights, delivery schedule, and airline reference calls.

high medium likelihood

R-006: Supplier, manufacturing, and production ramp

Boom depends on many suppliers, new engine production, tooling, Superfactory readiness, and quality systems.

Diligence request: Review supplier contracts, long-lead schedule, quality plans, tooling readiness, capex, and production ramp analysis.

high unknown likelihood

R-008: Talent, leadership, and safety culture opacity

Current headcount, executive depth, turnover, compensation, and safety culture are not public for a safety-critical aerospace company.

Diligence request: Request org chart, key-person analysis, headcount, attrition, compensation, safety culture, and employee-relations records.

high unknown likelihood

R-009: Legal, regulatory, IP, insurance, and contract opacity

Litigation, certification correspondence, IP ownership, supplier/customer contracts, insurance, EHS, and product liability are not publicly scheduled.

Diligence request: Request counsel letter, litigation/regulatory schedule, IP schedule, insurance, material contracts, and certification correspondence.

medium medium likelihood

R-007: Strategic focus risk from Superpower expansion

Adding AI data center turbines may provide funding but can distract from aviation certification and manufacturing.

Diligence request: Review resource allocation, management cadence, roadmap, and cash contribution by Superpower versus aviation programs.

Chapter 01

01Financial Information

Public sources verify unicorn valuation, 2025 financing, Superpower backlog, and aircraft order-book signals, but audited financials, cash burn, aircraft program cost-to-complete, cap table, debt, and projections are not publicly verifiable.

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I.A Annual and quarterly financial information for the past three years

not publicly verifiable confidence: low

Boom is private; public sources provide financing, backlog, and order-book signals but not audited income statements, cash flows, balance sheets, AR aging, backlog convertibility, or management accounts.

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Evidence gaps

Audited financials, monthly accounts, cash, debt, burn, runway, capitalized R&D, aircraft program accounting, Superpower COGS, backlog convertibility, AR aging, and tax schedules.

Hidden risks

Aircraft and engine development may require materially more capital than public announcements imply.

Follow-up questions

Provide audited financial statements and monthly management accounts for the last three fiscal years and current YTD.

Public financial and operating signals
metric	value	period	verification status	private data request
Superpower backlog	More than $1.25B	December 2025	partially_verified	Customer contract, margin, delivery schedule, and cancellation rights.
Overture order book	130 orders and pre-orders	2025-2026 public releases	partially_verified	Signed contracts, deposits, conditions, pricing, and delivery schedule.
Audited revenue, burn, cash, debt	Not publicly disclosed	2023-2026	not_publicly_verifiable	Audited financials and management accounts.

I.B Financial Projections

not publicly verifiable confidence: low

Boom's public plan depends on Superpower revenue, Symphony development, Overture certification, and airline deliveries; board projections and scenario cases are private.

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Evidence gaps

Three-year plan, program cost-to-complete, milestone-based financing plan, Superpower margin, aircraft unit economics, capex, and sensitivity cases.

Hidden risks

Certification delays, engine-test failures, supplier escalation, tooling delays, SAF availability, and airline deferrals could break the financing plan.

Follow-up questions

Provide board-approved forecast and sensitivity cases for Overture, Symphony, Superpower, certification, supplier costs, and airline delivery timing.

Capital structure and investor snapshot
stakeholder or instrument	public position	verification status	diligence caveat
Darsana Capital Partners	Led $300M 2025 funding round	verified	Terms and ownership not public.
Altimeter, ARK Invest, Bessemer, Robinhood Ventures, Y Combinator	Participated in 2025 round	verified	Current holdings and rights not public.
Debt, grants, options, warrants, SAFEs/notes	Not disclosed	not_publicly_verifiable	Request full cap table and obligations.

I.C Capital Structure

not publicly verifiable confidence: low

CB Insights and Boom identify investors and financing rounds, but shares, preferences, debt, warrants, options, and off-balance-sheet obligations are not public.

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Evidence gaps

Fully diluted cap table, preferences, investor rights, options/warrants/SAFEs/notes, debt instruments, grants, and secondary transactions.

Hidden risks

Late-stage preferred terms, liquidation preferences, debt, supplier financing, government funding obligations, and employee equity overhang could materially affect common-equity value.

Follow-up questions

Provide the current cap table, all financing documents, debt schedule, government grant/contract obligations, and equity incentive plan.

Public funding and valuation history
date	event	amount or value	source	diligence caveat
2020-12-16	CB Insights unicorn-list join date	$1.5B valuation	CB Insights current unicorn list	Confirm source and current value with financing records.
2025-12-09	New funding round led by Darsana Capital Partners	$300M funding	Boom press release	Round terms, post-money, preferences, and dilution not public.
2025-12-09	Superpower backlog announcement	More than $1.25B backlog	Boom press release	Contract enforceability, margin, and cancellation terms not public.

Funding announcements are not a substitute for cap-table and cash-flow diligence.

I.D Other financial information

partially verified confidence: medium

Public financing anchors include the $1.5B CB Insights valuation and 2025 $300M funding; tax positions and accounting policies are private.

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Evidence gaps

Tax positions, revenue-recognition policy, aircraft program capitalization, R&D accounting, government contract accounting, and fair-value support.

Hidden risks

Public valuation and funding announcements may not indicate current fair value, liquidation preference, or capital required to reach certification.

Follow-up questions

Reconcile public valuation and financing references to financing documents, current 409A, preference stack, and program cash needs.

Funding and program milestone timeline Public financing and program milestones relevant to valuation.

Public financing and backlog bars Chart of public valuation/funding/backlog anchors.

Chapter 02

02Products

Boom's public products and programs include Overture, Symphony, XB-1, Superpower, Boomless Cruise, and the Overture Superfactory; technical maturity, program economics, certification readiness, and product profitability are private.

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II.A Description of each product

partially verified confidence: medium

Overture is the planned airliner; Symphony is the purpose-built turbofan; XB-1 is the demonstrator; Superpower is a turbine aimed at AI data centers using related engine-core technology.

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Evidence gaps

Product-level cost, design maturity, certification basis, test data, safety case, production readiness, and gross margin.

Hidden risks

XB-1 success does not prove Overture certification, Symphony durability, economics, manufacturing ramp, airline acceptance, or Superpower margin.

Follow-up questions

Provide product P&Ls, technical readiness levels, program schedules, certification plans, cost-to-complete, and test/quality data.

Product and program matrix
program	public evidence	stage	diligence need
Overture	Mach 1.7, 64-80 passengers, 4,250 nm range, 600+ routes, 130 orders/pre-orders.	In development; certification targeted by end of decade in 2024 release.	Certification plan, design maturity, unit economics, customer terms.
Symphony	Boom-designed medium-bypass turbofan; 35,000 lb thrust; FAA/EASA Part 33 compliant design target.	Prototype/testing path; engine core prototype testing slated for 2026.	Test data, supplier SOWs, certification basis, cost-to-complete.
XB-1	Reached Mach 1.122 in January 2025.	Flight demonstrator milestone complete.	Full test report, anomalies, traceability to Overture.
Superpower	42 MW natural gas turbine for AI data centers; Crusoe launch customer.	New commercial program announced in 2025.	Backlog contract, margin, manufacturing plan, reliability data.

Overture public specifications and schedule
dimension	public value	source	diligence caveat
Speed and range	Mach 1.7 over water; 4,250 nautical miles; 64-80 passengers.	Overture page / American order release	Validate against final design, payload-range, noise, and certification constraints.
SAF compatibility	Designed for up to 100% SAF.	Multiple Boom releases	SAF availability, price, lifecycle emissions, and airline procurement are not public.
Certification timing	2024 release says FAA/EASA certification by end of decade.	Overture aircraft and engine development release	Certification schedule requires regulator correspondence and issue logs.

Boom product architecture Conceptual architecture of Boom's aircraft, engine, turbine, and factory programs.

Chapter 03

03Customer Information

Public evidence supports major airline, U.S. Air Force, supplier, and Crusoe relationships, but customer economics, enforceability, concentration, contract terms, deposits, cancellation rights, and supplier commitments are not public.

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III.A Top customers by application

partially verified confidence: medium

Publicly named customer/partner signals include United, American, Japan Airlines, Crusoe, and the U.S. Air Force; revenue by customer is not public.

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Evidence gaps

Signed customer agreements, deposit balances, refundability, conditions, delivery slots, price escalation, cancellation rights, and customer references.

Hidden risks

Order book may include conditional, option, or pre-order aircraft that do not convert to revenue.

Follow-up questions

Provide top-customer schedule and signed airline, Superpower, and government agreements with all conditions and payment terms.

Publicly known customers and order signals
customer	public commitment	use case	diligence gap
United Airlines	15 Overtures with option for 35, subject to requirements.	Commercial airline supersonic fleet.	Purchase agreement, conditions, deposits, delivery, pricing.
American Airlines	Up to 20 Overtures, option for 40, non-refundable deposit on initial 20.	Commercial airline supersonic fleet.	Deposit amount, conditions, delivery, pricing, cancellation.
Japan Airlines	$10M strategic investment and option to purchase up to 20 aircraft through pre-order.	Design collaboration and potential fleet.	Current status of option, investment terms, route economics.
Crusoe	Launch customer for 29 Superpower turbines.	AI data center power.	Order contract, pricing, margin, delivery schedule.

Named customer/order signal chart Bar chart of public aircraft/turbine commitment counts.

III.B Strategic relationships

partially verified confidence: medium

Boom publicly discloses airline relationships, a U.S. Air Force STRATFI partnership, Superpower launch customer Crusoe, and many suppliers; economics and obligations are private.

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Evidence gaps

Strategic partnership contracts, supplier statements of work, Superpower order terms, government contract terms, revenue contribution, and termination rights.

Hidden risks

Supplier, government, and turbine agreements may include milestone, performance, cancellation, indemnity, or exclusivity terms that affect economics.

Follow-up questions

Provide all strategic relationship contracts and revenue/spend by relationship.

Strategic partners and suppliers
partner	nature	public evidence	gap
U.S. Air Force / AFWERX	Three-year STRATFI partnership valued up to $60M.	Boom 2022 release.	Contract milestones, deliverables, rights, and current status.
StandardAero / FTT / GE Additive / Colibrium	Symphony engine design, additive, assembly, MRO support.	Symphony releases.	Supplier SOWs, IP, cost, delivery, quality, certification obligations.
Honeywell, Collins, Eaton, Safran, Latecoere, Leonardo, Universal Avionics, ATI, AIT	Overture avionics, systems, materials, tooling, and supplier ecosystem.	Overture and Superfactory releases.	Contract terms, long-lead commitments, quality, and supply continuity.

III.C Revenue by customer

not publicly verifiable confidence: low

Revenue by customer and accounts above 5% of revenue are not public.

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Evidence gaps

Revenue by customer, deposits, backlog, gross margin, revenue-recognition policy, and accounts above 5% of revenue.

Hidden risks

Current revenue may be concentrated in government R&D, deposits, engineering services, or Superpower backlog rather than aircraft sales.

Follow-up questions

Provide revenue, deposits, backlog, and gross margin by customer for the past two fiscal years and current YTD.

III.D Significant relationships severed within the last two years

not publicly verifiable confidence: low

No public schedule of severed relationships was identified; supplier changes and engine strategy shifts require private confirmation.

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Evidence gaps

Lost customer, supplier, partner, or government relationship schedule with economic impact and dispute status.

Hidden risks

Loss of an engine, airline, supplier, government, or Superpower customer could materially impair program timing and funding.

Follow-up questions

Provide all severed or materially changed relationships for the last two fiscal years and current YTD.

III.E Top suppliers

partially verified confidence: medium

Public supplier names include StandardAero, Florida Turbine Technologies, GE Additive/Colibrium Additive, Honeywell, Collins, Eaton, Safran, Latecoere, Leonardo, Universal Avionics, ATI, AIT, and others; contract terms and spend are private.

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Evidence gaps

Supplier spend, long-lead purchase orders, exclusivity, termination rights, quality metrics, certification deliverables, and supplier risk assessments.

Hidden risks

Long-lead materials, engine components, avionics, landing gear, manufacturing automation, and certification support could drive cost escalation or delays.

Follow-up questions

Provide supplier contracts, spend by vendor, quality scorecards, delivery schedules, and critical-path dependency map.

Chapter 04

04Competition

Boom competes with subsonic premium air travel, business aviation, potential supersonic/hypersonic entrants, NASA/Lockheed government programs, internal airline fleet plans, and the cautionary precedent of failed supersonic startups.

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IV.A Competitive landscape by market segment

partially verified confidence: medium

Boom's differentiation is speed, announced airline relationships, XB-1 flight data, and a purpose-built engine/superfactory path; market share, airline ROI, and competitive win/loss are private.

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Evidence gaps

Airline business cases, competitive pricing, operating-cost comparisons, route economics, fleet planning, and customer willingness-to-pay.

Hidden risks

Subsonic premium cabins, remote collaboration, SAF constraints, noise regulation, and economics can compete with or reduce demand for supersonic aircraft.

Follow-up questions

Provide airline ROI models, competitive win/loss, route economics, and willingness-to-pay research.

Competitor and substitute matrix
alternative	segment	overlap	diligence need
Subsonic premium cabins and long-range widebodies	Commercial air travel	Business-class passengers on premium routes.	Route economics and willingness-to-pay.
Business aviation and charter	Time-sensitive travel	High-value travelers willing to pay for speed and convenience.	Customer segmentation and trip substitution.
Government and incumbent aerospace programs	Supersonic/hypersonic and defense transport	High-speed flight and government missions.	Competitive technology and procurement analysis.

Basis-of-competition scoring
axis	boom position	risk	evidence
Speed	Twice as fast over water; Mach 1.7 Overture claim.	Economics and route restrictions may limit value.	Overture and airline releases.
Certification and safety	XB-1 technical milestone and certification target by end of decade.	Type certification and engine certification remain unproven.	XB-1 and Overture development releases.
Sustainability and noise	100% SAF compatibility and Boomless Cruise claims.	SAF supply, emissions lifecycle, and overland noise regulation require validation.	Boomless Cruise and Overture claims.

Supersonic travel market map Positioning map of Boom and substitutes.

Chapter 05

05Marketing, Sales, and Distribution

Boom's GTM is relationship-led with airlines, government, suppliers, investors, public technical milestones, and Superpower AI-infrastructure customers; funnel, pipeline, sales productivity, and budgets are private.

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V.A Strategy and implementation

partially verified confidence: medium

Public channels include direct airline partnerships, government partnership, supplier ecosystem, high-profile flight milestones, newsroom/content, and Superpower turbine launch customer.

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Evidence gaps

Sales pipeline, marketing budget, airline fleet-planning cycle, Superpower sales funnel, government pipeline, and conversion metrics.

Hidden risks

GTM claims may outrun certification, production, delivery, and unit economics.

Follow-up questions

Provide GTM plan, pipeline by segment, conversion metrics, customer decision criteria, and sales/marketing budget.

Distribution channels and GTM motions
channel	public evidence	buyer	gap
Direct airline fleet partnerships	United, American, JAL announcements.	Airlines	Pipeline, conversion, economics, and delivery readiness.
Government/defense	U.S. Air Force STRATFI partnership and Northrop Grumman collaboration references.	Government and defense	Procurement path, mission requirements, contract economics.
AI infrastructure power turbines	Crusoe launch customer and Superpower backlog.	AI data centers	Backlog terms, production capacity, warranty and margin.

Public marketing-signal summary
signal	evidence	diligence caveat
XB-1 supersonic flight	Mach 1.122 flight announcement.	Scaling to Overture and certification remains unproven.
Order book	130 aircraft orders/pre-orders claim.	Contract enforceability and revenue timing private.
Superfactory and Superpower	Greensboro Superfactory and $1.25B Superpower backlog.	Operational readiness and margins private.

Observed GTM funnel Qualitative funnel from technical proof to contracts.

V.B Major Customers

not publicly verifiable confidence: low

Public sources identify major airline and Superpower/customer prospects, but pipeline and expansion plans are not public.

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Evidence gaps

Major customer pipeline, renewal/option exercise expectations, delivery schedule, deposit schedule, and account plans.

Hidden risks

Major customer commitments may be conditional on certification, economics, delivery timing, SAF, and safety requirements.

Follow-up questions

Provide account plans and pipeline for airlines, government, and Superpower customers.

V.C Principal avenues for generating new business

partially verified confidence: medium

New business appears to depend on airline fleet deals, Superpower turbine orders, government/defense relationships, supplier co-development, and technical credibility.

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Evidence gaps

Bookings by channel, conversion, market-size assumptions, partner contribution, and customer acquisition cost.

Hidden risks

Pursuing both aircraft and AI turbine markets may split resources or introduce unfamiliar commercial and regulatory risks.

Follow-up questions

Provide bookings pipeline and conversion assumptions by airline, government, Superpower, and supplier/channel route.

V.D Sales force productivity model

not publicly verifiable confidence: low

Sales compensation, quota, cycle length, and sales productivity are not public.

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Evidence gaps

Quota, compensation, pipeline coverage, win rates, procurement cycle, and sales capacity.

Hidden risks

Aircraft and industrial turbine sales cycles may be long, milestone-heavy, and dependent on technical progress.

Follow-up questions

Provide sales productivity, quota, attainment, pipeline coverage, and sales compensation model.

V.E Ability to implement marketing plan with current and projected budgets

not publicly verifiable confidence: low

Marketing budgets and ability to support aircraft, Superpower, government, and supplier channels are not public.

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Evidence gaps

Marketing plan, budget, channel attribution, communications controls, and forecast ROI.

Hidden risks

Commercial messaging could be constrained by certification uncertainty and forward-looking claims.

Follow-up questions

Provide marketing plan, budget, campaign performance, PR/legal review process, and hiring plan.

Chapter 06

06Research and Development

R&D centers on Overture aircraft, Symphony engine, XB-1 learning, Boomless Cruise, Superpower turbine, Superfactory manufacturing, and supplier integration; certification evidence and cost-to-complete are private.

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VI.A Description of R&D organization

partially verified confidence: medium

Public sources identify founder/CEO Blake Scholl and partnerships with engine, additive, MRO, avionics, materials, and manufacturing suppliers; R&D headcount and spend are private.

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Evidence gaps

R&D org chart, design authority, headcount, supplier RACI, test plan, safety review cadence, configuration management, and cost-to-complete.

Hidden risks

Supplier coordination, scarce aerospace talent, and engine certification expertise are critical execution constraints.

Follow-up questions

Provide R&D organization, technical leadership roster, supplier RACI, program budget, test plan, and safety/certification governance.

Key R&D personnel and supplier capabilities
person or partner	role	public evidence	diligence need
Blake Scholl	Founder and CEO	Quoted across Boom releases.	Founder retention, succession, technical governance.
Florida Turbine Technologies / Kratos	Symphony engine design team	Boom selected FTT for engine design.	SOW, IP rights, staffing, certification deliverables.
StandardAero	Symphony MRO and assembly/testing	Symphony assembly/testing agreement in San Antonio.	Capacity, quality, cost, and certification support.

R&D and certification roadmap Public development milestones and future targets.

VI.B New Product Pipeline

partially verified confidence: medium

Visible pipeline milestones include XB-1 flight testing, Boomless Cruise, Symphony engine-core testing, Superpower turbines, Overture certification, and Superfactory production readiness.

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Evidence gaps

Detailed roadmap, certification plan, stage-gate criteria, test data, risk burndown, and budget by workstream.

Hidden risks

Public milestones are not equivalent to type certification, production conformity, airline acceptance, or commercial profitability.

Follow-up questions

Provide integrated master schedule, certification plan, risk register, and technical milestone evidence for Overture, Symphony, Superpower, and Superfactory.

Public product and research pipeline
milestone	date or target	public status	risk
XB-1 first supersonic flight	2025-01-28	Reached Mach 1.122.	Demonstrator-to-airliner scaling.
Boomless Cruise	2025-02-10	Company says XB-1 broke sound barrier without audible boom reaching ground.	Operational, regulatory, and route constraints.
Symphony engine core prototype	2026	95% of prototype parts in manufacturing; testing slated for 2026.	Engine performance, durability, certification.
FAA/EASA certification	End of decade target	Target stated in 2024 release.	Critical-path certification risk.

Chapter 07

07Management and Personnel

Public sources confirm founder/CEO Blake Scholl and some historical headcount and partner/supplier leadership references, but current executive roster, board, headcount, compensation, turnover, and employee relations are private.

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VII.A Organization Chart

partially verified confidence: medium

Public sources identify Blake Scholl as founder and CEO but do not disclose a complete current organization chart.

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Evidence gaps

Current org chart, board roster, executive team, program leads, design authority, and succession plan.

Hidden risks

Key-person dependency and technical leadership gaps cannot be assessed from public sources.

Follow-up questions

Provide current org chart, board/advisor roster, program leadership, and succession plan.

Senior management roster
name	role	public evidence	diligence caveat
Blake Scholl	Founder and CEO	Quoted as founder and CEO across Boom releases.	Confirm employment, equity, succession, and key-person risk.
Tristan Brandenburg	Chief Test Pilot	Named as XB-1 pilot in supersonic-flight release.	Confirm flight-test team depth and safety governance.
Full executive team	Not fully public in reviewed sources	Not publicly scheduled.	Request management bios and org chart.

Public leadership org chart Only leadership nodes publicly verified in reviewed sources.

Full org chart was not public.

VII.B Historical and projected headcount by function and location

partially verified confidence: medium

The JAL partnership release said Boom had over 150 full-time employees in 2017; current headcount by function/location and hiring plan are not public in reviewed sources.

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Evidence gaps

Current headcount, function/location split, hiring plan, contractor mix, clearance needs, retention, and productivity.

Hidden risks

Aerospace certification, manufacturing, propulsion, and turbine commercialization require deep specialized staffing.

Follow-up questions

Provide headcount by function/location, hiring plan, attrition, contractor mix, and program staffing model.

Headcount, compensation, and turnover diligence
area	public signal	verification status	diligence request
Historical headcount	Over 150 full-time employees in 2017 JAL release.	partially_verified	Current monthly headcount by function/location.
Compensation and equity	Not disclosed.	not_publicly_verifiable	Compensation, benefit, stock plan, and retention schedules.
Turnover and employee relations	Not disclosed.	not_publicly_verifiable	Attrition, safety culture, employee claims, and exit themes.

Public headcount anchor Public headcount anchor and missing current data.

VII.C Senior management biographies

partially verified confidence: low

Public releases quote Blake Scholl and supplier executives, but a full current management-biography package is not public.

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Evidence gaps

Executive bios, references, employment agreements, background checks, compensation, equity, and retention terms.

Hidden risks

Executive depth across certification, quality, manufacturing, propulsion, finance, legal, safety, and sales requires validation.

Follow-up questions

Provide senior management biographies, reference permissions, compensation, retention, and employment agreements.

VII.D Compensation arrangements

not publicly verifiable confidence: low

Compensation arrangements and benefit plans are not publicly verifiable.

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Evidence gaps

Executive compensation, employment agreements, bonus plans, benefits, severance, and change-of-control terms.

Hidden risks

Retention packages, severance, and aerospace talent compensation could materially affect burn and transaction economics.

Follow-up questions

Provide all executive and employee compensation, bonus, benefit, severance, and change-of-control schedules.

VII.E Incentive stock plans

not publicly verifiable confidence: low

Stock incentive plans, option grants, vesting, and employee liquidity are private.

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Evidence gaps

Stock plan, option ledger, RSU/option grants, exercise prices, vesting, and employee secondary/liquidity records.

Hidden risks

Long program timelines may create retention risk if employee equity is illiquid or underwater.

Follow-up questions

Provide equity incentive plan, option ledger, employee equity grants, exercise prices, and liquidity programs.

VII.F Significant employee relations problems, past or present

not publicly verifiable confidence: low

No employee-relations schedule was public in reviewed sources.

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Evidence gaps

Employee claims, investigations, hotline trends, safety-culture audits, and employment counsel summaries.

Hidden risks

Safety-critical aerospace culture and whistleblower processes are important but private.

Follow-up questions

Provide employee-relations schedule, hotline trends, investigations, safety-culture audits, and counsel summaries.

VII.G Personnel Turnover

not publicly verifiable confidence: low

Turnover data is not public.

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Evidence gaps

Monthly attrition by function/location, regretted attrition, open roles, retention plan, and exit themes.

Hidden risks

Loss of certification, propulsion, flight-test, quality, manufacturing, or finance leaders could affect program schedule and safety.

Follow-up questions

Provide turnover metrics and retention analysis for the last two years and current YTD.

Chapter 08

08Legal and Related Matters

The largest legal/regulatory diligence items are aircraft and engine certification, sonic-boom/noise rules, emissions/SAF claims, product liability, government contracting, IP, supplier/customer contracts, and insurance; legal schedules are private.

EC-007 EC-010 EC-011 EC-012 EC-013 EC-014

VIII.A Pending lawsuits against the Company

not publicly verifiable confidence: low

No schedule of pending lawsuits against Boom was identified in reviewed public sources; counsel confirmation is required.

EC-014

Evidence gaps

Counsel litigation schedule, demand letters, reserves, disputes, warranties, and product-liability assessment.

Hidden risks

Product liability, employment, supplier, customer, IP, securities, environmental, or government-contract disputes may be non-public.

Follow-up questions

Provide pending/threatened litigation, disputes, demand letters, reserves, and counsel assessment.

Pending lawsuits against or initiated by Boom
matter type	public status	evidence	diligence request
Pending lawsuits against company	No schedule identified	Reviewed public sources do not disclose a litigation schedule.	Counsel letter and litigation schedule.
Affirmative lawsuits	No schedule identified	Reviewed public sources do not disclose affirmative litigation.	Affirmative litigation, IP enforcement, and disputes.

Absence from reviewed public sources is not proof of no litigation.

Legal and regulatory risk heatmap Heatmap for core Boom diligence risks.

VIII.B Pending lawsuits initiated by Company

not publicly verifiable confidence: low

No public schedule of affirmative litigation was identified.

EC-014

Evidence gaps

Affirmative litigation and settlement schedule.

Hidden risks

Affirmative IP, trade-secret, contract, or supplier actions could reveal operational stress.

Follow-up questions

Provide all lawsuits, arbitration, and disputes initiated by Boom.

VIII.C Environmental and employee safety issues and liabilities

partially verified confidence: low

Boom's aircraft and turbine programs create environmental, workplace, test-flight, noise, emissions, fuel, and manufacturing safety diligence needs; detailed records are private.

EC-005 EC-010 EC-011 EC-014

Evidence gaps

EHS records, safety management system, test-flight safety plan, environmental permits, SAF supply assessment, noise/emissions analysis, and workplace incidents.

Hidden risks

Noise, sonic boom, emissions, SAF supply, test-flight safety, hazardous materials, and manufacturing safety may affect certification and operations.

Follow-up questions

Provide EHS/safety records, FAA safety materials, environmental permits, noise/emissions analyses, and Superfactory workplace safety records.

Regulatory, contract, insurance, and EHS exposure matrix
area	public signal	verification status	follow up
Aircraft/engine certification	FAA SFA for XB-1; FAA/EASA certification target; Part 33 engine-design target.	partially_verified	Certification plan, agency correspondence, issue logs, and safety analysis.
Material contracts	Airline, government, supplier, Superpower, and factory relationships announced.	not_publicly_verifiable	All material contracts and obligations.
Insurance/EHS	SAF, Boomless Cruise, Superfactory, test flight, and turbine claims create exposure; policy details not public.	not_publicly_verifiable	Insurance, EHS, test-flight safety, environmental permits, and noise/emissions analysis.

VIII.D Material patents, copyrights, licenses, and trademarks

not publicly verifiable confidence: low

Material IP likely includes Overture designs, Symphony/Superpower engine core, XB-1 data, Boomless Cruise algorithms, manufacturing processes, and trademarks; IP schedule is private.

EC-002 EC-010 EC-011 EC-012 EC-014

Evidence gaps

Patent/trademark/copyright schedule, assignments, supplier IP terms, government-purpose rights, open-source scan, and trade-secret controls.

Hidden risks

Supplier co-development, government funding, employee inventions, open-source software, and data rights could affect ownership.

Follow-up questions

Provide full IP schedule, assignments, supplier IP clauses, government rights analysis, and open-source/license scan.

Material IP and technology rights
asset or right	public evidence	risk	request
Overture aircraft design and XB-1 test data	Boom public releases and product pages.	Certification, supplier, and employee invention rights.	IP schedule, assignments, design data ownership.
Symphony/Superpower engine core	Symphony and Superpower releases.	Supplier co-development and government rights.	Supplier IP clauses, patents, trade secrets, government rights.
Boomless Cruise algorithms and software	Boomless Cruise release.	Regulatory acceptance, model validation, software safety.	Software safety case, patents, source-code controls.

VIII.E Insurance coverage and material exposures

not publicly verifiable confidence: low

Insurance coverage is not public; aircraft development and turbine operations require substantial product, aviation, cyber, E&O, D&O, workers compensation, and environmental coverage.

EC-014

Evidence gaps

Insurance policies, limits, exclusions, claims, deductibles, broker assessment, and adequacy analysis.

Hidden risks

Product liability and test-flight coverage may be expensive or limited before certification.

Follow-up questions

Provide all insurance policies, claims history, and risk-transfer adequacy analysis.

VIII.F Material contracts

not publicly verifiable confidence: low

Airline, Superpower, government, supplier, lease, funding, and manufacturing contracts are material and private.

EC-002 EC-006 EC-007 EC-008 EC-012 EC-013 EC-014

Evidence gaps

Material contract data room including customers, suppliers, government, financing, leases, IP, insurance, and employment agreements.

Hidden risks

Contracts may include cancellation, milestone, warranty, indemnity, exclusivity, government rights, or change-of-control restrictions.

Follow-up questions

Provide all material contracts with economic terms, delivery/milestone obligations, termination rights, indemnities, and assignment provisions.

VIII.G Regulatory agency problems

partially verified confidence: low

Public sources disclose FAA/EASA certification ambitions, FAA Special Flight Authorization for XB-1, and U.S. Air Force funding; regulatory correspondence, issues, or agency problems are private.

EC-011 EC-012 EC-013 EC-014

Evidence gaps

Certification basis, FAA/EASA correspondence, issue papers, safety assessments, noise/emissions compliance, and government-contract compliance.

Hidden risks

Certification delays or adverse FAA/EASA findings could materially delay revenue and require new capital.

Follow-up questions

Provide FAA/EASA certification plan, all agency correspondence, issue logs, safety assessments, and government contract compliance records.

Evidence

Evidence claims
ID	Claim	Status	Sources
EC-001	CB Insights lists Boom as a current unicorn at a $1.5B valuation, date joined 2020-12-16, United States, Centennial, Industrials, with investors WRVI Capital, Caffeinated Capital, and Y Combinator.	verified medium	SRC-001
EC-002	Boom announced a $300M funding round, more than $1.25B Superpower backlog, Crusoe as launch customer for 29 turbines, and stated the financing funds Symphony development.	partially verified medium	SRC-002
EC-003	Boom's homepage describes active programs called Superpower, Overture, Symphony, and XB-1.	verified medium	SRC-003
EC-004	Boom says it started in 2014 to build faster, safer, more sustainable supersonic travel, including Overture and Symphony.	verified medium	SRC-014
EC-005	Boom's Overture page claims Mach 1.7, 60,000 ft cruise, 100% SAF compatibility, 4,250 nm range, 64-80 passengers, 600+ routes, and 130 orders/pre-orders.	partially verified medium	SRC-004
EC-006	American Airlines announced an agreement to purchase up to 20 Overture aircraft with an option for 40 more and said it paid a non-refundable deposit on the initial 20 aircraft.	partially verified medium	SRC-005
EC-007	United announced an agreement to purchase 15 Overture aircraft with an option for 35 more, conditioned on safety, operating, and sustainability requirements.	partially verified medium	SRC-006
EC-008	Japan Airlines made a $10M strategic investment and has an option to purchase up to 20 Boom aircraft through a pre-order arrangement.	partially verified medium	SRC-007
EC-009	Boom repeatedly claims Overture's order book stands at 130 aircraft from American, United, and Japan Airlines.	partially verified medium	SRC-002 SRC-008 SRC-010
EC-010	Boom says XB-1 reached Mach 1.122 at 35,290 feet on January 28, 2025, making it the first independently developed supersonic jet to break the sound barrier.	partially verified medium	SRC-008
EC-011	Boom says XB-1 demonstrated Boomless Cruise by breaking the sound barrier without an audible sonic boom reaching the ground, and Overture could fly up to 50% faster over land under Mach cutoff.	partially verified medium	SRC-013
EC-012	Boom's Symphony engine program is public, with 35,000 lb thrust, 100% SAF optimization, FAA/EASA Part 33 compliance target, StandardAero assembly/testing, and end-of-decade certification target for Overture.	partially verified medium	SRC-010 SRC-011
EC-013	Boom announced a three-year U.S. Air Force STRATFI partnership valued at up to $60M to accelerate Overture R&D.	partially verified medium	SRC-012
EC-014	Public sources reviewed do not disclose Boom's audited financials, cap table, cash, debt, burn, customer contracts, certification correspondence, supplier contracts, legal schedule, insurance, IP schedule, or current headcount.	not publicly verifiable high	SRC-001 SRC-002 SRC-003 SRC-004 SRC-005 SRC-006 SRC-007 SRC-008 SRC-009 SRC-010 SRC-011 SRC-012 SRC-013 SRC-014
EC-015	Boom remains visibly active: its current site and 2025-2026 releases describe active products, hiring/careers links, funding, and program milestones.	partially verified medium	SRC-002 SRC-003 SRC-014

Sources
ID	Publisher	Title	Accessed
SRC-001	CB Insights	The Complete List Of Unicorn Companies	2026-06-04
SRC-002	Boom Supersonic	Boom Supersonic to Power AI Data Centers with Superpower Natural Gas Turbines; Adds $300 Million in New Funding	2026-06-04
SRC-003	Boom Supersonic	Boom Supersonic \| The Future of Supersonic Travel	2026-06-04
SRC-004	Boom Supersonic	Overture \| Boom Supersonic	2026-06-04
SRC-005	Boom Supersonic / American Airlines	American Airlines Announces Agreement to Purchase Boom Supersonic Overture Aircraft	2026-06-04
SRC-006	Boom Supersonic / United Airlines	United Adding Supersonic Speeds with New Agreement to Buy Aircraft from Boom Supersonic	2026-06-04
SRC-007	Boom Supersonic / Japan Airlines	Japan Airlines and Boom Announce Strategic Partnership for Supersonic Air Travel	2026-06-04
SRC-008	Boom Supersonic	Boom Supersonic Achieves Supersonic Flight	2026-06-04
SRC-009	Boom Supersonic	Boom Supersonic Completes Construction of Overture Superfactory	2026-06-04
SRC-010	Boom Supersonic	Boom Supersonic Accelerates Overture Aircraft and Engine Development	2026-06-04
SRC-011	Boom Supersonic	Boom Supersonic announces Symphony, the sustainable and cost-efficient engine for Overture	2026-06-04
SRC-012	Boom Supersonic	US Air Force and Boom Supersonic Enter into Strategic Partnership	2026-06-04
SRC-013	Boom Supersonic	Boom Supersonic Announces Boomless Cruise	2026-06-04
SRC-014	Boom Supersonic	Company \| Boom Supersonic	2026-06-04

Disclaimer

This report is a public-evidence diligence snapshot, not investment advice. Important financial, legal, technical, and contractual facts remain non-public and should be verified directly with management and primary documents before any investment decision.