Series B Data Room Checklist 2026

TL;DR: A Series B data room is significantly more demanding than earlier rounds. Institutional growth investors — Tier 1 VCs, growth equity funds, crossover investors — conduct full professional due diligence. The data room must include 2–3 years of financial history, detailed SaaS metrics, complete legal documentation, security certifications, and customer references. For organizing and sharing your Series B data room, SendNow provides NDA-gated microsites with per-investor analytics from $9/month. This guide covers every document institutional investors expect.

Why Series B Data Rooms Are More Demanding

Series B investors are deploying $20M–$80M or more into a single company. They conduct institutional-quality due diligence that resembles M&A more than early-stage venture. Where a seed data room might contain 10–15 documents, a Series B data room typically contains 60–120+ documents.

Who reviews your Series B data room:

• Partners and associates at the lead investor
• Financial advisors running financial model analysis
• Legal counsel conducting legal due diligence
• Technical diligence teams reviewing code, architecture, and security
• Market analysts validating market size claims
• Reference checkers (customers, former employees)

Each workstream has its own document requirements. A poorly organized data room slows down multiple workstreams simultaneously.

At a Glance: Series B Data Room Platforms

Complete Series B Data Room Checklist

Corporate and Legal

Foundational corporate documents:

• Certificate of Incorporation and all amendments
• Bylaws (current version)
• Cap table — fully diluted, current and post-money
• Cap table history (showing all prior financing rounds and grants)
• Stockholder list (name, shares, class, certificate numbers)

Prior financing:

• Stock Purchase Agreements for all prior rounds
• Investor Rights Agreements (IRA) and all amendments
• Right of First Refusal and Co-Sale Agreements (ROFR/Co-Sale)
• Voting Agreements and all amendments
• Certificates of Designation for all preferred share series
• 83(b) election filings for founders

Equity plans and grants:

• Current equity plan (EIP/SIP with plan terms)
• Complete option and RSU grant history
• Vesting schedule summary (key employees)
• Accelerated vesting provisions for key grants

Financial Information

Historical financials:

• Audited or reviewed financial statements (last 2–3 years)
• Monthly profit and loss statements (last 24 months)
• Monthly balance sheet (last 12 months)
• Monthly cash flow statement (last 12 months)
• Accounts receivable aging schedule

Revenue analysis:

• Monthly recurring revenue (MRR/ARR) with trend
• Revenue by customer cohort
• Revenue by product line or segment
• Geographic revenue breakdown
• Net revenue retention by cohort (or aggregate)

Unit economics:

• Customer Acquisition Cost (CAC) by channel
• CAC payback period
• Lifetime Value (LTV) by cohort or segment
• LTV/CAC ratio

Forward-looking:

• Financial model (last 12 months actuals + 24–36 month projection)
• Revenue model with driver assumptions
• Hiring plan supporting the projection

SaaS and Business Metrics

This section is the analytical core of a Series B data room for SaaS and subscription companies.

Growth metrics:

• Monthly ARR (or MRR) history with YoY growth
• Net New ARR by source (new, expansion, contraction, churn)
• Logo and revenue churn rate by cohort
• Gross Revenue Retention (GRR) rate

Customer data:

• Total customers, by tier (if segmented)
• Average Contract Value (ACV) trend
• Customer concentration — top 10 customers as % of ARR
• Number of customers over key revenue thresholds ($10K, $50K, $100K ARR)
• Payback period by channel and customer tier

Efficiency metrics:

• Burn multiple (net burn / net new ARR)
• Magic Number (new ARR added / S&M spend)
• Sales efficiency by channel
• Gross margin and contribution margin by segment

Pipeline and backlog:

• Sales pipeline by stage and expected close date
• Qualified pipeline coverage ratio

Customers

Customer evidence:

• Top 10 customer agreements (redacted if sensitive)
• Net Promoter Score (NPS) history
• Customer testimonials and case studies
• Reference customer list (companies willing to take calls)

Churn analysis:

• Summary of churned customers in last 12 months (reason, ARR impact)
• Downsell summary
• Expansion revenue analysis

Technology and Security

Institutional growth investors conduct technical diligence. This section is often reviewed by dedicated technical teams.

Architecture:

• System architecture overview (non-sensitive summary)
• Technology stack documentation
• Cloud infrastructure documentation (AWS/GCP/Azure cost and architecture)

Security:

• SOC 2 Type II report (if completed)
• Penetration testing reports (last 12–24 months)
• Bug bounty program documentation
• Security incident history
• GDPR/CCPA compliance documentation (if applicable)

Engineering:

• Engineering team structure and headcount
• Key technical hires planned
• Technical debt documentation

Intellectual Property

IP ownership:

• IP ownership summary
• Patent portfolio (if applicable)
• Signed employee invention assignment agreements (sample form; certification of completion)
• Contractor/freelancer IP assignment agreements (sample form)
• Open-source license audit summary

Product:

• Product roadmap (12–18 month view)
• Key development milestones achieved vs. plan

Human Resources

Team:

• Org chart (current)
• Key employee list with tenure, role, and equity vesting status
• Attrition rate (last 12 months) by level
• Upcoming vesting cliffs for key employees (retention risk indicator)

Compensation:

• Compensation benchmarking summary
• Equity compensation philosophy
• Benefits overview

Market and Competition

Market:

• Market size analysis (TAM/SAM/SOM) with sources
• Market growth rate and drivers
• Competitive landscape (feature comparison vs. top 3–5 competitors)

Competition:

• Win/loss analysis by competitor
• Key competitive differentiators and evidence

Material Contracts

• Key customer agreements (top 5–10, redacted for confidential terms)
• Key vendor/supplier agreements
• Office lease agreements
• Major software license agreements (critical infrastructure)

Regulatory and Compliance

• Material regulatory correspondence
• Data processing agreements (GDPR DPAs with key customers)
• Privacy policy and terms of service
• Material certifications (SOC 2, ISO 27001, HIPAA BAA)

Series B Data Room Folder Structure

Top-Level Organization:

01. Business Overview
02. Financial Information
   02.1 Historical Financials
   02.2 SaaS Metrics
   02.3 Financial Model
03. Legal
   03.1 Corporate Documents
   03.2 Financing History
   03.3 Equity Plans
04. Customers
05. Technology and Security
06. Product
07. Team
08. Market and Competition
09. Contracts
10. Regulatory

NDA and Access Management

For Series B rounds, all investors should sign a mutual NDA before data room access. Use a platform that enforces NDA acceptance before document viewing — this creates an automatic record of each investor's acceptance.

SendNow handles NDA gating natively. Configure the NDA gating on your microsite or secure link, and every investor must accept confidentiality before accessing any document.

Access tiers for Series B:

• Initial meeting: Pitch deck and teaser only
• Post-interest: Financial summary, cohort metrics, team overview
• Full diligence: Complete data room (all categories above)
• Final term sheet: Reference contacts, sensitive legal documents

Related Guides

• SPAC Data Room Guide 2026
• Virtual Data Room Implementation Guide 2026
• Best VDR for Technology Companies 2026
• Data Room Due Diligence Checklist 2026
• Virtual Data Room Security Features Guide

Frequently Asked Questions

What documents does a Series B investor require?+

Series B investors require: 2–3 years of financial statements, monthly MRR/ARR history, cohort retention analysis, unit economics (CAC, LTV, payback), complete cap table with vesting schedules, all prior financing agreements, IP ownership documentation, SOC 2 or security documentation, top customer agreements, key employee information, and a 24–36 month financial model. This is a materially more comprehensive list than Series A.

How long does Series B due diligence take?+

Series B due diligence typically runs 6–10 weeks from initial partner meeting to term sheet. Full due diligence (legal, financial, technical, reference) often runs in parallel after a term sheet. Total time from first meeting to close commonly runs 10–16 weeks.

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

Series A data rooms are simpler — 15–30 documents covering team, product, early traction, and financial projections. Series B data rooms contain 60–120+ documents including audited financials, complete cohort analysis, SOC 2 security documentation, full legal documentation, and competitive analysis. Series B investors conduct institutional-quality diligence that resembles M&A rather than early-stage venture.

How should I organize my Series B data room?+

Use a numbered top-level folder structure to enforce display order: Business Overview, Financial Information (with sub-folders for historical financials, SaaS metrics, and financial model), Legal, Customers, Technology and Security, Product, Team, Market and Competition, Contracts, and Regulatory. Use clear, dated document names. Provide a data room index document that maps your structure to common investor due diligence request lists.

What SaaS metrics matter most for Series B investors?+

The most important SaaS metrics for Series B investors are: Net Revenue Retention (should be 100%+ for top-tier companies), cohort retention curves showing long-term customer retention, ARR growth rate and trend, burn multiple (net burn / net new ARR — lower is more efficient), and CAC payback period. Magic Number (new ARR / S&M spend) measures sales efficiency. Sophisticated investors rebuild all metrics from underlying data, so provide the raw cohort data, not just summary tables.

Which platform should I use for my Series B data room?+

SendNow is the strongest choice for most growth-stage fundraising data rooms. It provides NDA-gated microsites, per-investor view analytics (see which investors have reviewed which documents), expiring links, and dynamic watermarking from $9/month. For companies running a highly competitive round with 10+ serious investors requiring a formal Q&A process, iDeals provides more structured infrastructure at $500+/month.