A practical company due-diligence checklist

"Due diligence" covers everything from a five-minute sanity check before a partnership to a months-long, lawyer-led investigation before an acquisition. This checklist is for the front end of that range: the public-sources-first review you can do yourself, before you commit time, money or your reputation to a company. It won't replace formal legal and financial diligence on a real deal — but it will tell you whether a deal is worth that expense, and it will surface the questions you should be asking.

A note up front: this is general information, not legal or financial advice. For an actual transaction, work with qualified professionals. Everything below relies on public sources only.

1. Confirm the entity is real and who it is

Start with identity. Find the legal name and confirm it against a public business registry — registration date, status (active vs. dissolved), and registered officers or directors where available. Mismatches between the marketing name and the legal entity, or a registration that's surprisingly recent, are worth noting. Confirm the company actually does what it claims, in plain terms, from more than just its own homepage.

2. Map ownership and leadership

Who owns and runs the company? Identify the founders, the current leadership, and any parent or holding company. Look for stability: frequent or recent C-suite turnover is a flag worth understanding. Build a rough org sketch — who leads sales, engineering, finance — so you know who you'd actually be dealing with and whether the depth is real or one person wearing five hats.

3. Read the financial shape

For private companies you usually can't audit the numbers from outside, but you can read the shape from the public record: funding rounds and investors, any public filings or abbreviated accounts, and revenue signals from credible coverage. Note what's confirmed versus inferred. The absence of funding isn't automatically bad — many healthy companies are bootstrapped — but unexplained gaps between claimed scale and visible substance deserve a question.

4. Check hiring and headcount trends

Hiring is a forward-looking, hard-to-fake signal. A steady stream of roles across functions suggests a healthy, growing operation; a sudden freeze, or roles that are reposted endlessly without closing, can hint at trouble or churn. Where a company is adding headcount tells you where it's investing — and whether that matches the story it's telling you.

5. Build a timeline from the news

Lay press and milestones out in date order: launches, expansions, leadership changes, partnerships, and anything that reads as a setback — a recall, a security incident, a public dispute. A timeline turns scattered coverage into a trajectory you can judge, and it makes gaps and inconsistencies visible.

6. Map relationships and reputation

Look at the company it keeps: named customers, partners and competitors. A company's real position is often clearer from its relationships than its marketing. Then check outside sentiment — reviews from customers and, where relevant, from employees — reading them for patterns rather than individual outliers.

7. Scan for risk flags

Deliberately go looking for the things people prefer to skip: lawsuits and legal disputes, layoffs, regulatory actions, security incidents, and reputation issues. The goal isn't to disqualify a company over one flag — it's to surface them so nothing surprises you later. Write down each flag with its source so you can decide which ones warrant deeper, professional investigation.

8. Verify the load-bearing claims

Finally, identify the handful of facts your decision actually rests on — and verify each one against a primary source before you act. Public data can be stale or duplicated; the claims that matter are the ones to confirm directly. This is exactly why sourcing matters: a checklist where every line links back to its origin is one you can actually trust.

From checklist to file

Run this checklist by hand and you'll spend most of your time gathering, not judging. That's the gap a company dossier fills: its nine sections map closely onto the steps above — identity, people, money, hiring, news, relationships and risk — with every line sourced so you can verify the ones that matter. It's the public-source first pass, assembled for you, before the expensive formal diligence begins. See how it's built, the due-diligence use case, or how to research a private company for the manual version.

Vetting a company this week? Open a free dossier to start the checklist with the gathering already done.