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The investor data room checklist

Tick through every document investors expect, sorted by funding stage. Seed rounds need 31 documents. Series A rounds need 47. Each item explains why investors ask for it, because knowing the reason usually changes how the document gets prepared.

Lucy Colson
Lucy Colson · Advisor to 250+ startups · Free tool

The checklist

Coming soon

This interactive tool is in development.

How investors actually use a data room

Most investors open three things first, the cap table, the historical financials, and the current round terms. Everything else gets read once those three reconcile.

The ordering matters because it shows where preparation pays. A polished product roadmap fails to compensate for a cap table refusing to match Companies House.

Inconsistency causes the most common delay. The problem is rarely a missing document. The problem is a number saying one thing in the deck and another in the spreadsheet. Investors read the discrepancy as weak grip on the numbers rather than dishonesty, which damages confidence just as effectively.

What a Seed data room needs

At Seed, investors expect gaps. The diligence examines the team and the opportunity, with documents serving as a sanity check.

GroupDocsWhat investors are checking
Corporate and legal6Clean structure, no surprises in the constitution
Cap table and funding5Who owns what, fully diluted, including SAFEs and options
Financials7Whether the numbers match the pitch deck
Product and market6Whether the opportunity is real and understood
Team and IP4Who is committed, and whether the company owns what it built
Traction evidence3Whether anyone actually wants the product

Unnecessary at Seed. Audited accounts, detailed cohort analysis, formal board minutes, and an HR policy suite. Including them signals inexperience more than thoroughness.

What a Series A data room needs

At Series A the burden shifts from potential to evidence. The diligence asks whether the business works, rather than whether it could.

Added at Series AWhy
24+ months monthly financialsTrend matters more than a snapshot
Cohort retention and churn, with definitionsDefinitions get checked, and inconsistent ones are a red flag
Unit economics with workingsCAC, LTV and payback, showing the calculation rather than the conclusion
Revenue by customer and segmentConcentration risk becomes visible
Signed contracts for material revenueVerbal agreements fail diligence
Board minutes and resolutionsGovernance maturity
Litigation and contingent liabilitiesSurprises kill deals late
GDPR and data-processing documentationIncreasingly a gating item in the UK

The Series A difference. At Seed, absence is forgivable. At Series A, absence is a finding.

How long does preparing a data room take

A Seed data room takes two to five working days to assemble properly. A Series A data room takes two to four weeks, mostly because the financial detail and signed contracts need gathering from several places.

Preparation should start before the raise, rather than during it. Assembling a data room while running investor meetings creates the inconsistencies causing delay, since documents get produced under time pressure and stop matching each other.

Frequently asked questions

What should be in an investor data room?

An investor data room should contain corporate and legal documents, a fully diluted cap table, financials and a financial model, product and market evidence, team and IP documentation, and traction evidence. Seed rounds need around 31 documents. Series A rounds need around 47.

What is the difference between a Seed and Series A data room?

A Seed data room proves the team and the opportunity are credible, and gaps are acceptable. A Series A data room proves the business works, requiring 24+ months of monthly financials, cohort retention, unit economics with workings, and signed contracts for material revenue. At Seed a gap is forgivable. At Series A a gap is a finding.

How long does it take to prepare a data room?

A Seed data room takes two to five working days. A Series A data room takes two to four weeks. Starting before the raise avoids the inconsistencies caused by assembling documents under time pressure.

Do I need a virtual data room platform?

Most Seed rounds run fine on a well-organised Google Drive or Dropbox folder. Investors care about finding documents rather than the software. Move to a dedicated platform once access logs matter, since knowing who opened what is real signal during a raise.

What makes investors lose confidence in a data room?

Four things, in order of frequency. Numbers disagreeing across documents. A data room assembled once and never updated. Aggressive permissions on routine files. A folder of documents with no index explaining what is there.

Should I include things I do not have yet?

Yes, name them and explain why. "No audited accounts, we are pre-audit at this stage" closes a question. Silence leaves it open, and investors fill silence with the least favourable assumption.

Next step

Preparing to raise? Book a strategy session with Lucy Colson to pressure-test the raise before investors do.

The AI Diligence Tool answers investor questions directly from an approved data room, so routine follow-ups stop landing in the founder's inbox.

Ready to open your data room

Pressure-test the raise with Lucy Colson before investors do.

Lucy Colson
Lucy Colsonin
Founding Partner

Lucy is an ex-founder turned consultant who has worked with 250+ startups. This work includes helping one close a £3M seed round.

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