{"acquisitions":[],"changes":[{"companyHref":"/c/busek-com","date":"2026-10-17","documentUrl":"https://www.sbir.gov/portfolio/115015","domain":"busek.com","fact":"provenance:existence","name":"BUSEK CO., INC.","new":{"publisher":"SBIR.gov","status":"sourced","url":"https://www.sbir.gov/portfolio/115015"},"old":{"publisher":"busek.com","status":"self-reported","url":"https://busek.com"},"publisher":"SBIR.gov","reason":null,"retrievedAt":"2026-10-17","slug":"busek-com","status":"sourced","url":"https://whoraisedwhat.com/c/busek-com"},{"companyHref":"/c/busek-com","date":"2026-09-28","documentUrl":null,"domain":"busek.com","fact":"provenance:total","name":"BUSEK CO., INC.","new":{"publisher":"Ledger calculation","status":"derived","url":null},"old":{"publisher":null,"status":"unknown","url":null},"publisher":"Ledger calculation","reason":null,"retrievedAt":"2026-05-05","slug":"busek-com","status":"derived","url":"https://whoraisedwhat.com/c/busek-com"},{"companyHref":"/c/busek-com","date":"2026-09-28","documentUrl":null,"domain":"busek.com","fact":"total raised","name":"BUSEK CO., INC.","new":"3400000","old":"3380078","publisher":"Ledger calculation","reason":"Stated total is below the largest recorded round; sum of recorded rounds used","retrievedAt":"2026-05-05","slug":"busek-com","status":"derived","url":"https://whoraisedwhat.com/c/busek-com"}],"country":"US","description":"Busek develops electric propulsion thrusters and power electronics for spacecraft, including Hall and electrospray systems. It serves satellite operators, NASA, and defense customers. Its differentiator is flight-proven propulsion with multiple US firsts, including the first US Hall thruster and electrospray thruster in space.","domain":"busek.com","employees":null,"founded":1985,"fundingTotalQuarantined":false,"githubOrg":null,"githubStars":null,"industry":"unknown","industrySources":[],"investors":[],"lat":42.314759,"lng":-71.335879,"location":"NATICK, Massachusetts, USA","multiples":[],"name":"BUSEK CO., INC.","people":[],"revenues":[],"rounds":[{"amountQuarantined":false,"amountUsd":3400000,"connectionsAmong":[],"currency":"USD","date":"2023-10-01","investments":[],"investors":[],"leadInvestor":null,"leadInvestors":[],"people":[],"slug":"busek-com-2023-10-01-grant","source":{"fact":"round","publisher":"sbir","retrievedAt":"2026-05-05","status":"attributed","url":null},"status":"attributed","type":"grant","url":null}],"slug":"busek-com","sources":[{"fact":"total","publisher":"Ledger calculation","reason":"Stated total is below the largest recorded round; sum of recorded rounds used","retrievedAt":"2026-05-05","status":"derived","url":null},{"fact":"round","publisher":"sbir","retrievedAt":"2026-05-05","status":"attributed","url":null},{"fact":"existence","publisher":"SBIR.gov","retrievedAt":"2026-10-17","status":"sourced","url":"https://www.sbir.gov/portfolio/115015"},{"fact":"description","publisher":"busek.com","retrievedAt":"2026-05-05","status":"self-reported","url":"https://busek.com"}],"stage":null,"stockCard":{"asOf":"2026-11-09","facts":[],"generatedAt":"2026-11-09","state":"insufficient-evidence","tldr":[]},"techStack":["Typekit","Adobe Fonts","Afterpay","Sentry","Squarespace","Squarespace Commerce","Stimulus","web-vitals","jQuery","moment 0","@sentry/browser"],"totalRaisedDerived":true,"totalRaisedUsd":3400000,"traction":[],"updatedAt":"2026-05-05","valuations":[]}