Petrarch YC Application
San Francisco
Petrarch went through Y Combinator in the Summer 2026 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.
- YC batch
- Summer 2026
- Industry
- B2B
- Location
- San Francisco
- Team size
- 3
- Status
- Active
- Launched
- 2026
Founders
Ian LeeFounder/CEO
Samuel HahnFounder/COO
Sudhish SwainFounder/CTO
What Petrarch does
Petrarch brings internal company data to frontier labs, starting with manufacturing and industrial companies. We source data including codebases, project files, and payments from bankruptcy courts, then de-identify and prepare the data for model training.
Petrarch's YC application, reconstructed
Y Combinator application
Petrarch, Summer 2026 batch. The real form questions, answered from public data.
- Founders2
- Company7
- Progress7
- Idea4
- Equity3
- Curious2
- Batch Preference1
Company
Petrarch
Internal industrial company data for frontier labs
Petrarch gives labs access to de-identified internal data from manufacturing and industrial companies. We collect codebases, project files, and payment records - usually from bankruptcy courts - then scrub and prep the data for machine learning and research. Our product is a marketplace for this 'frontier' industrial data: researchers and labs log in, browse asset listings, and acquire data that's never been available outside those companies before.
San Francisco, CA, USA. The company will stay based here after YC.
We're in San Francisco because it's where the early users, collaborators, and labs are - and where we want to hire. All three founders are already based here, and this is the center of the AI and data community our product targets.
21 more answers in the full application
Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.
Frequently Asked Questions
Is this the real Petrarch YC application?
No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Petrarch's public data (launch notes, founder backgrounds, product description). It shows how a company like Petrarch would present itself to YC, not the text they submitted.
What YC batch was Petrarch in?
Petrarch was part of the Y Combinator Summer 2026 batch.
Who founded Petrarch?
Petrarch was founded by Ian Lee, Samuel Hahn, Sudhish Swain.
What does Petrarch do?
Internal industrial company data for frontier labs
How do I read the full reconstructed application?
Create a free Round Funded account. The full 26-answer version of Petrarch's application, and every other YC batch, is in YC Insights.
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