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US pre-IPO companies

Own shares in a top US startup?

Guides for people who hold equity in the biggest US private companies — what your shares or options may be worth, the US rules on exercising and selling, and how a private secondary actually works.

Independent & educational. We are not affiliated with any company listed. These are plain-English guides for people who already hold shares, options or RSUs — not investment advice, and not an offer to buy or sell any security. Whether to buy or sell, and on what terms, is each person's own decision.
Value your equityA rough figure in seconds, plus what it costs to exercise.
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The US rules & taxISO/NSO/RSU, 83(b), AMT, ROFR, capital gains & QSBS.
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Prepare to sellThe US Equity Toolkit: templates, checklists, tax.
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Get a personalized reportModel your own grant: value, exercise, dilution, tax.
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Sell shares in a specific company

Hold equity in one of these? Each guide covers how a private secondary works for that company and the US rules that apply. Independent, educational guides for people who already hold their shares or options.

AI & Robotics

OpenAIAnthropicxAIDatabricksScale AIPerplexityGleanTogether AIGroqAnysphereHarveySierraFigure AISafe SuperintelligencePhysical IntelligenceRunwaySunoCognitionHugging FaceBasetenPineconeApplied IntuitionFireworks AIModularSambaNovaCrusoeCartesiaLuma AIWriterCrestaHippocratic AIContextual AIDecagonMercorThinking Machines LabWorld LabsReflection AIImbuePoolsideMagicAugment CodeTabnineLightning AIWeaviateChromaUnstructuredHebbiaYou.comKagiSkild AIStandard BotsDexterityCollaborative RoboticsZilliz

Fintech & Crypto

StripePlaidBrexRampMercuryDeelRipplingGustoCartaAddeparNavanBoltPublicKrakenChainalysisFireblocksGeminiConsensysUniswap LabsOpenSeaPersonaPilotColumnModern TreasuryLithicAlloyStytchKalshiPolymarketSardineRhoNovoRelayFoundZetaHighnoteUnitSyncteraTreasury PrimeMoovFinixMethodArgyleAnchorageBitGoBlockchain.comRippleAlchemyMagic EdenPhantomNirvanaNewfrontAt-BayCoalition

Developer, Data & Productivity

NotionAirtableRetoolVercelGrammarlyCockroach LabsStarburstdbt LabsReplitSourcegraphPostmanTemporalAutomatticWebflowCalendlyWorkOSFivetranAirbyteClickHouseSupabasePlanetScaleZapierLinearSigma ComputingHexLangChainDockerRedpandaTursoRailwayFly.ioDenoWarpClerkConvexNetlifyRenderHarnessChronosphereCribl

Security

Vanta1PasswordTaniumSnykAbnormal SecurityIslandChainguardDrataSecureframeSemgrepHuntressMaterial SecurityClarotyArmis

Space, Defense & Hardware

SpaceXAndurilRelativity SpaceShield AISkydioVardaAstranisSaronicHadrianChaos IndustriesZiplineStoke SpaceTrue AnomalyEpirusMach IndustriesImpulse SpaceVannevar LabsCastelionK2 SpaceUrsa MajorHermeusGecko RoboticsBeta TechnologiesMerlin Labs

Consumer & Marketplace

DiscordWhatnotStockXFaireGopuffFanaticsEpic GamesTuroGOATCameoPatreonWonderCloudKitchensRec Room

Healthtech

Devoted HealthRoCedarCommureAbridgeIncluded HealthFlatiron HealthFunction HealthMaven ClinicSpring HealthCarbon HealthInnovaccerOpenEvidenceTruvetaTranscarentColor HealthKomodo HealthDatavant

Sales, Legal & Workplace

ClayGongOutreachIroncladEnvoyDensityGuildAttentive

Understand your equity before you act

PrivateTechShares is an education and tools service — not a broker or marketplace. Work out what your stake might be worth, the rules and tax that apply, and how to prepare properly, with free calculators, guides and a preparation toolkit.

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General information only — not financial, tax or legal advice. Company names and logos are the property of their owners and are used here only to describe the market for their shares. PrivateTechShares is an education and tools service: it is not a broker or marketplace, does not introduce buyers and sellers, does not hold funds, and does not execute or advise on transactions.