16 Y Combinator companies based in Houston, with team size, growth, open roles and funding.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| Company | Batch | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
Decarbonizing the chemicals industry. | W17 | 133 | +2% | −1% | 0 | $856M | Debt$214M, Jun 2024 |
Making all ships robots. | W22 | 40 | +5% | +33% | 3 | $58.5M | Series A$43M, Jan 2026 |
Absorbable wrap for blood vessels | S20 | 34 | +3% | 0 | $29.8M | Series A$4M, Jun 2024 | |
Natural hydrogel to keep internal organs scar-free after surgery | W22 | 25 | +47% | +178% | 0 | $32.3M | Series A$30M, Jul 2026 |
AI enabling digital urine diagnostics in the home | W22 | 16 | +14% | 0 | $13.9M | Undisclosed round$825K, Mar 2026 | |
Volumetric builds living multicellular tissues with a focus on the… | W20Acquired | 16 | −20% | −20% | 0 | $1.8M | Seed$1.8M, Jul 2020 |
Virtualizing brick-mortar infrastructures of clinics w/ generative AI | W22 | 14 | +8% | +8% | YC | $500K | Non-equity support$500K, Jun 2023 |
The dynamic single-cell analysis company | S21 | 13 | 0% | −7% | 0 | $5.1M | Grant$200K, Aug 2025 |
Financial Platform for Migrant Families in America | S21 | 9 | 0 | $200K | YC investment$200K, Jun 2021 | ||
We built the world's first automated digital pathology lab. | W19 | 8 | +14% | +14% | 0 | $3.2M | Grant$1M, Mar 2021 |
Catheter-based solution to treat chronic heart failure. | W22 | 6 | 0% | 0 | $1M | Non-equity support$500K, Jul 2023 | |
No-code workflow tool | W21 | 5 | −17% | −17% | 0 | $4M | Seed$3.9M, Sep 2021 |
The smarter way to estimate steel. | X25 | 2 | YC | $500K | YC investment$500K, Jun 2025 | ||
We deploy autonomous drones to 911 calls. Our software gives first… | S18 | 196 | 0 | $23.5M | Undisclosed round$17M, Oct 2026 | ||
Spend crypto anywhere online | S22 | ||||||
Advancing surgical precision through safe electrical stimulation. | S18Acquired |
Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.
Each company is matched to Crustdata by its website. Crustdata adds team size and its change over 6 and 12 months, open roles from job postings, reported funding, and founders' past employers.
Hiring the most counts distinct roles posted in the last 60 days. Growth needs 10+ people today, shrinking 20+ a year ago, so tiny teams do not top the lists. Rebuilt every week.
The numbers on this page come from three Crustdata API calls. Crustdata tags 5,000+ companies with Y Combinator as an investor; swap the filter for any investor, industry or headcount range and track your own list, with founders' work emails one call away.
# 1. every company with Y Combinator as an investor curl https://api.crustdata.com/company/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "field": "funding.investors", "type": "in", "value": ["Y Combinator"] }, "fields": ["basic_info.name", "headcount.total", "headcount.growth_percent", "funding.total_investment_usd"], "limit": 100 }' # 2. open listings per company, last 60 days (limit 0 = counts only) curl https://api.crustdata.com/job/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "op": "and", "conditions": [ { "field": "company.basic_info.company_id", "type": "in", "value": [...] }, { "field": "metadata.date_added", "type": "=>", "value": "2026-08-24" } ]}, "limit": 0, "aggregations": [{ "type": "group_by", "field": "company.basic_info.company_id", "agg": "count" }] }' # 3. the same company filter as a weekly watch: POST /watch/company/search
16 Y Combinator companies are based in Houston; 14 are active.
1 companies posted roles in the last 60 days, led by Fleetzero (3 roles). 2 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): TYBR Health (+47%), Ankr Health (+8%) and Fleetzero (+5%).
Largest latest rounds in the last 12 months, after their YC batch: Fleetzero ($43M), TYBR Health ($30M) and Paladin ($17M).