Deal Terms
Anti-Dilution Protection
Last updated
Quick Answer
Investor rights that adjust their conversion price downward if the company later issues shares at a lower price.
What it is
Anti-dilution protection adjusts an investor's preferred stock conversion price if the company subsequently issues shares at a lower price per share (a down round). This protects investors from value dilution by giving them more shares upon conversion. The two main types are full ratchet (conversion price drops to the new lower price) and weighted average (conversion price is adjusted based on the size and price of the dilutive issuance).
In Practice
An investor owns preferred shares with a $10 conversion price. The company raises a down round at $5/share. With full ratchet, the conversion price drops to $5, doubling the investor's share count. With weighted average, it might drop to $7.50.
Operational context
What good looks like
The term is tied to a real workflow, not just a definition.
Ownership, timing, and evidence are clear.
The reader can tell what decision the concept supports.
Related terms point to the next useful explanation.
Why It Matters
Anti-dilution provisions are standard in VC deals but their type matters enormously. Full ratchet can devastate founder ownership in a down round, while weighted average is significantly more founder-friendly.
VC Beast Take
Anti-dilution protection is one of those terms that seems abstract until it matters — and then it matters enormously. The 2022-2023 downturn triggered more anti-dilution adjustments than the industry had seen in a decade, as companies that raised at peak 2021 valuations were forced into down rounds. The mechanics are straightforward but the second-order effects are brutal: when investors get repriced shares, the dilution falls disproportionately on common stockholders — founders and employees. This is why experienced founders negotiate 'pay-to-play' provisions alongside anti-dilution: if an investor wants price protection, they should also be required to participate in the down round. Pay-to-play forces investors to put up new money or lose their preferential treatment, aligning incentives between capital preservation and company survival.
Term Family
Related concepts
Further Reading
VC Term Sheet Template & Guide: Every Clause Explained with Examples
A clause-by-clause breakdown of every standard VC term sheet provision — what each term means, what's market, what to negotiate, and the red flags that cost founders millions.
SAFE vs Convertible Note vs Priced Round: Which One Should You Use?
SAFEs, convertible notes, and priced rounds each have tradeoffs. Here's when to use each, with worked examples showing exactly what they cost you in dilution.
VC Interview Questions: 30 Questions They'll Actually Ask (With Answers)
30 real VC interview questions organized by category: technical, market thesis, deal evaluation, and behavioral. With frameworks for answering each one.
The Real Cost of Raising Venture Capital (Fees, Dilution, and Hidden Risks)
Most founders think raising $5M means getting $5M. It doesn't. Here's the real math on dilution, legal fees, time costs, and hidden terms that nobody warns you about.
409A Valuations Explained: Why They Matter for Your Stock Options
The 409A valuation sets the price you pay for your stock options. Here's how it works, why early employees get a better deal, and what happens to your strike price as the company grows.
Y Combinator SAFE Agreement: Templates, Terms, and How to Use Them
A complete guide to the Y Combinator SAFE agreement — where to find official templates, how key terms like valuation caps and discounts work, and when to use a priced round instead.
Related Guides
How to Get a 409A Valuation: Process, Cost, and Providers Compared
A 409A valuation isn't optional — it's a legal requirement that protects your employees and your company. Here's the full process, what it costs, and how to choose a provider.
How to Negotiate a VC Term Sheet: A Founder's Leverage Guide
A founder's guide to negotiating VC term sheets: leverage mechanics, which terms actually matter, specific tactics, and real scenarios with concrete playbooks.
How to Read a Term Sheet: Line-by-Line Guide for Founders
Every major term sheet clause decoded: liquidation preference, board composition, anti-dilution, vesting, protective provisions, and more. With a negotiation priority list at the end.
Understanding Startup Equity and Dilution: A Complete Guide
How equity actually works, what dilution really means, and what founders take home in different exit scenarios. Real math, worked examples, no hand-waving.
Related Questions
What is a down round and what does it mean for a startup?
A down round is when a startup raises new funding at a lower valuation than its previous round, signaling financial distress and triggering dilution for earlier investors and employees.
What is a term sheet in venture capital?
A term sheet is a non-binding document that outlines the key terms of a proposed investment — valuation, ownership stake, governance rights, and investor protections — before the final legal agreements are drafted.
What is a term sheet?
A term sheet is a non-binding document that outlines the key terms of a proposed investment — valuation, amount, ownership percentage, and governance rights. It's the starting point for negotiating a deal.
What is anti-dilution protection in venture capital?
Anti-dilution protection adjusts an investor's share price downward if the company later raises money at a lower valuation, protecting the investor from being diluted by a down round.
Frequently Asked Questions
What is Anti-Dilution Protection in venture capital?
Anti-dilution protection adjusts an investor's preferred stock conversion price if the company subsequently issues shares at a lower price per share (a down round). This protects investors from value dilution by giving them more shares upon conversion.
Why is Anti-Dilution Protection important for startups?
Understanding Anti-Dilution Protection is critical for founders navigating the fundraising process. It directly impacts deal terms, valuation, and the relationship between founders and investors.
What category does Anti-Dilution Protection fall under in VC?
Anti-Dilution Protection falls under the deal-terms category in venture capital. This area covers concepts related to the financial and legal terms that define investment agreements.
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