Y Combinator × EDGAR
As of Monday 12 Oct 2026 · America/Denver
Map YC
every confirmed SEC filing of Y Combinator and its companies, S05 → 2027.
Directory refreshed 12 Oct 2026 from the yc-oss dump: 6,288 companies (113 added, 16 removed, status changes applied). EDGAR was not re-searched. 556 confirmed CIKs were carried forward only for companies still listed. 113 new names are unsearched. No CIKs were invented.
Directory outcomes
Where every company stands
Official YC status on 12 Oct 2026: 4,344 Active, 832 Acquired, 1,089 Inactive, 23 Public. Reddit is still Acquired in the directory (IPO 2024, RDDT). Stripe is still Active.
Stacked bars below are 100% composition, oldest batch first. Height is mix, not size — hover for counts. Click a column to open that batch. Pale columns have no confirmed EDGAR match yet.
What they do
One-liners over time
Play the overall cloud to watch words grow or fade from S05 to now — or pick a year to see that year’s words. Built from each company’s YC one-liner.
YC over time
Batch explorer
All 6,288 companies, S05 first
Every official directory batch, including the batches with zero confirmed filings (F25, S26, F26, W27, S27, Unspecified). Status is YC’s. CIK, ticker, and first filing appear only when a match was confirmed. Website is the official directory URL when present.
Company marks via Logo.dev
Directory mindmap
Years from the center out
Center is YC. The ring is years. Click a year to see its batches, then a batch for the companies. Expand makes the map bigger. Search filters the map. Try to highlight W16 and F25. Esc closes the panel. Nothing here is invented.
Filings over time
First EDGAR filing by year
First Form D date when known, else the first filing attributed to the operating company. 556 companies with a dated first filing. 2021 peak.
US listings (IPO effectiveness, 8-A12B, or S-4 effectiveness) — 22 of 25 in the public set. Stripe, Meesho, and Groww have no listing event in the file.
First-party issuers
18 YC fund vehicles
Confirmed EDGAR issuers at 335 Pioneer Way, Mountain View, CA. Form D / D/A only — no 10-K, 13F, or S-1 under these CIKs. The adviser, Y Combinator Management, LLC (CRD 171730), has no CIK. 18 first-party CIKs · 29 Form D / D/A filings.
| First Form D | Legal name | Filings | CIK |
|---|
Core seed names on the 2026 ADV — Y Combinator Fund I, Fund II, YCVC Fund I — carry placeholder Form D numbers and were not found on EDGAR.
Public set
25 in the public / SEC-rich set
Official YC status = Public is 23. Reddit (still Acquired) and Stripe (still Active) are included because they are the SEC-rich exceptions named in the research, not because we changed YC’s labels.
Research dump
Hosted files
Every source file used to build this map, at a stable public path. Direct URLs, no login. Full catalog →
Company marks via Logo.dev