Venture Capital Due Diligence Checklist: 75+ Items Every Investor Should Verify

Most deals that blow up weren't surprises. The warning signs were there — buried in a cap table footnote, hinted at by a lukewarm reference call, hiding in a projection model that assumed 0% churn. Experienced investors who lost money on bad deals will tell you the same thing: they saw the red flag, they talked themselves out of it, and they wrote the check anyway.

Due diligence doesn't guarantee you avoid lemons. But it dramatically raises the cost of self-deception. A rigorous DD process forces you to confront uncomfortable truths before they become expensive ones.

This is the checklist. 75+ items across six categories. For each one: what to actually check, what good looks like, and what should make you pause.

Work through it systematically. Take notes. Compare what founders say to what documents show. And when something doesn't add up — ask again.

Category 1: Team Due Diligence

Venture capital is, at its core, a bet on people. Markets shift. Products pivot. But the quality of the founding team is the one variable that compounds over time in your favor — or against it.

Background Checks

1. Criminal and civil litigation history

What to check: Public records search, court filings, any disclosed or undisclosed litigation involving founders personally.

What good looks like: Clean record, or any disclosed issues with clear context and resolution.

Red flag: Undisclosed litigation. Prior fraud, theft, or securities violations. Civil judgments that weren't mentioned.

2. Employment history verification

What to check: Confirm titles, tenures, and exits at every company listed on the founder's bio.

What good looks like: Consistent story between resume, LinkedIn, and what references confirm.

Red flag: Inflated titles ("VP" who was actually an individual contributor), unexplained gaps, tenure discrepancies.

3. Education verification

What to check: Confirm degrees claimed — institution, field, graduation status.

What good looks like: Clean match between claims and records.

Red flag: Degrees not completed but presented as completed. Institutions that don't check out.

4. Prior company outcomes

What to check: What happened to companies the founders previously ran? Acqui-hire, shutdown, bankruptcy, fraud?

What good looks like: Honest accounting of wins and losses. Founders who can discuss failures with clarity and ownership.

Red flag: Founders who can't explain why prior companies failed, or who position every outcome as a success.

5. Founder-to-founder relationship history

What to check: How long have co-founders known each other? Have they worked together before?

What good looks like: At least one prior working relationship, or a clear story of how the partnership formed and why it works.

Red flag: Co-founders who met at a hackathon three months ago. No shared history, no tested conflict resolution.

Reference Calls

6. Former managers and direct reports

What to check: Call references the founder didn't give you — back-channel through your network. Ask how they managed under pressure, how they handled feedback, and whether they'd work with them again.

What good looks like: Consistent, specific praise. References who volunteer examples without prompting.

Red flag: References who pause too long before answering. Generic positives with no specifics. Anyone who says "they're better as an individual contributor."

7. Former co-founders and business partners

What to check: Anyone who built something with this person before. How did the partnership end?

What good looks like: Mutual respect even if the company didn't work out. Evidence of professional, not personal, separation.

Red flag: Former partners who won't take your call. Founders who badmouth every prior collaborator.

8. Customers from prior roles

What to check: Who did this founder sell to, build for, or serve before? Will those people vouch for them?

What good looks like: Former customers who would buy from them again.

Red flag: Reluctance to provide customer references from prior roles.

9. Investors from prior companies

What to check: Reach out to investors in prior ventures. What was the working relationship like? Would they back this founder again?

What good looks like: Prior investors who co-invest in this round, or who give strong unprompted endorsements.

Red flag: Prior investors who decline to comment, or who give qualified answers when asked if they'd reinvest.

Founder-Market Fit

10. Unfair insight or access

What to check: Does this founder have a reason to understand this market better than anyone else? Domain expertise, prior operator experience, personal lived experience with the problem.

What good looks like: Founders who've spent years in the industry, or who have a credible story for why they're the right person to solve this problem.

Red flag: Founders who discovered the problem via Google trends or a Substack post six months ago.

11. Network depth in the target market

What to check: Can the founder get a meeting with the top 20 people in their industry? Do they know who the decision-makers are and how they buy?

What good looks like: Warm intros to potential customers, advisors who are operators in the space.

Red flag: Founders who are learning the industry in real time, alongside your capital.

12. Technical credibility (for technical products)

What to check: Has the CTO actually built systems at scale? Do their engineering credentials match the product complexity required?

What good looks like: Prior experience at the right altitude — someone who's scaled a similar system before.

Red flag: Technical founders who rely entirely on outsourced development or who can't go deep on architecture decisions.

13. Sales credibility (for sales-led GTM)

What to check: Has the CEO sold before? Have they closed enterprise contracts, navigated procurement, managed a sales cycle longer than 6 months?

What good looks like: A founder who can walk you through their current pipeline with deal stage, contact name, and close probability.

Red flag: Founders who've never sold and believe product-led growth will eliminate the need to.

Cap Table Review

14. Founder ownership at time of investment

What to check: What percentage will founders own post-close? Are they motivated to keep going?

What good looks like: Founders with meaningful ownership — typically 15–40%+ at Series A depending on round history.

Red flag: Founders who've been diluted below 10% before Series A. They may have already mentally exited.

15. Prior investor rights

What to check: Pro-rata rights, information rights, board seats, protective provisions from prior rounds.

What good looks like: Clean, standard terms. Prior investors who are supportive of new capital.

Red flag: Heavily weighted protective provisions that limit future investor rights. Investor blocking positions.

16. Undisclosed convertible instruments

What to check: SAFEs, convertible notes, revenue-based financing, any instrument that converts into equity.

What good looks like: Full disclosure, with cap and discount terms clearly documented.

Red flag: Instruments that weren't on the initial cap table. Founders who are fuzzy on total dilution.

17. Option pool adequacy

What to check: Is the current option pool sufficient to hire the team needed to reach the next milestone?

What good looks like: 10–15% post-money pool, with a hiring plan that shows how it gets used.

Red flag: Option pool that will require a large top-up in the next 12 months, creating undisclosed dilution.

Vesting Schedules

18. Founder vesting terms

What to check: Standard 4-year vest with 1-year cliff? Any acceleration provisions?

What good looks like: Standard terms with single-trigger acceleration capped at 12 months (or none).

Red flag: Fully vested founders. Double-trigger full acceleration that makes the company harder to acquire. Co-founders who've already hit their cliff and are coasting.

19. Employee vesting

What to check: Are employees on standard schedules? Are any key employees close to fully vested?

What good looks like: Clean, consistent 4-year schedules across the team.

Red flag: Early employees who are 90% vested and haven't been refreshed. Potential departure risk you'll be funding through.

Category 2: Market Due Diligence