How to use ChatGPT or Claude to help sell your startup shares — safely
AI is genuinely useful for figuring out an equity sale — and confidently wrong often enough to cost you real money. Here's how to make it work for you without the traps.
If you're thinking about selling some of your startup shares, you've probably already asked an AI a question or two. Good — used well, ChatGPT or Claude will explain jargon, draft letters and spot things to ask about in seconds. Used blindly, it will hand you a confident, wrong answer about a five- or six-figure decision. The difference is knowing where to trust it and where to stop.
Treat AI like a fast junior assistant
It's brilliant for first drafts, plain-English explanations and prompting you with questions. It is never the one who signs off. Three rules before you paste anything into a public AI tool:
- Redact first. Never paste your real name, the company name, account numbers or anything private. Use placeholders like [COMPANY], [MY NAME], [BUYER] — you'll get the same quality answer without handing your deal to a third party.
- Verify against a real source. AI output is a draft, not a fact. Check anything important against your own agreements or a proper template.
- The big calls need a human. Tax treatment, whether a clause binds, the final number — confirm with an accountant or lawyer. AI gets you ~80% of the way; the last 20% is where the money and the risk live.
Three prompts that actually help
Here are three you can use right now (swap in your redacted details):
1. Understand your paperwork
2. Get a realistic value range
3. Find the restrictions before they surprise you
Where AI will let you down
- Country-specific tax and law. It generalises — usually toward US rules — and won't know your jurisdiction's quirks.
- Your actual documents. It only knows what you paste, and it can misread a clause with total confidence.
- The final letter a company will accept. A generic AI draft isn't the same as a battle-tested template.
- Accountability. If it's wrong, no one's on the hook but you.
Want the full set — done properly?
Our Equity Toolkit (€29) includes the full "Demystifying AI" section: expert, paste-ready prompts for every step of your sale, the guardrails for when to trust AI and when to verify, and — crucially — the real templates and checklists to verify against. AI gets you the draft; the toolkit makes sure it's right.
See what's in the toolkit →Read next
- How much are my startup shares worth?
- How to get cash out of your startup equity — without waiting for an exit
- What discount is fair when you sell startup shares?
Free: the Equity Starter Kit
The plain-English glossary, the "request my documents" letter, and the essentials to get started — instant download, no email required.
Download the free kit →Further reading
General, independent references on how private-company shares and options work. We're not affiliated with any of them.
- Carta — cap tables, secondaries and valuation explainers
- Cooley GO — startup legal explainers, including rights of first refusal
- Forge Global and EquityZen — secondary marketplaces (larger, later-stage deals)
- Ledgy and Index Ventures OptionPlan — European equity & ESOP references
General information only — not financial, tax or legal advice. Every situation is different; check your own share and option agreements and take professional advice before selling. PrivateTechShares makes introductions only: it is not a broker, does not hold funds, and does not execute or advise on transactions.