companies / bun-sh
Generated UTC · publication cutoff 2026-11-09
Insufficient cited evidence for a two-sentence summary.
verified=2026-09-27 json
| total_raised | 5,000,0005.0M | ○ |
|---|---|---|
| founded | 2018 | |
| hq | San Francisco | |
| industry | unknown | |
| stage | series-a |
Bun is a JavaScript and TypeScript runtime plus toolkit that bundles a fast runtime with a package manager, test runner, and bundler, with native TypeScript and JSX execution. It targets developers building backend services, full-stack apps, CLIs, and tooling who want shorter builds and faster startup. The package manager runs roughly 30x faster than npm and the runtime starts about 3x faster than Node.js with built-in PostgreSQL, Redis, S3, and WebSocket APIs.
No cited completed company acquisition recorded.
Dated disclosures. Customer relationships and classifications are historical; ARR is separate from revenue.
No cited disclosure recorded: named customer, disclosed revenue, ARR, count, B2B / B2C, sector, go-to-market.
No cited valuation with an explicit basis is recorded.
Historical post-money / actual annual or stated TTM revenue. Same currency; economic valuation date within 90 days of revenue period end, inclusive. No FX, ARR, annualized revenue, estimates or projections. Conflicts and ambiguous ties are withheld.
No qualifying pair recorded.
| date | type | amount | lead | src |
|---|---|---|---|---|
| 2024-09-15 | series-a | 5,000,0005.0M | null | ○ |
| person | role | src |
|---|---|---|
| Jarred Sumner | founder | YC |
| investor | src |
|---|---|
| Y Combinator | ○ |
Cloudflare, Vercel, Algolia, Google Analytics, Google Tag Manager, jsDelivr, DoubleClick Floodlight, WordPress, PHP, MySQL, React
| fact | status | src |
|---|---|---|
| Series A, $5.0M | attributed | ○ |
| existence | sourced | YC |
| description | self-reported | WEB |
| date | fact | change | src |
|---|---|---|---|
| 2026-09-27latest_round: series-a, $5.0M, 2024-09-15, lead: yc → series-a, $5.0M, 2024-09-15, lead: null, ○ 2026-09-27 | latest_round | series-a, $5.0M, 2024-09-15, lead: yc → series-a, $5.0M, 2024-09-15, lead: null | ○ 2026-09-27 |
| 2026-09-24provenance_existence: self-reported → sourced, YC 2026-09-17 | provenance_existence | self-reported → sourced | YC 2026-09-17 |
Records begin 2026-09-24. all_changes