# What is Cap Table Dilution? Definition & Technical Mechanics

> **Source:** [SPIDITS AI Startup & Venture Intelligence Glossary](https://spidits.com/startup-glossary)  
> **Category:** Funding  
> **Canonical Citation:** [https://spidits.com/startup-glossary/cap-table-dilution](https://spidits.com/startup-glossary/cap-table-dilution)

## Definition
Cap Table Dilution refers to the reduction in existing shareholders' equity ownership percentage caused by the issuance of new stock, option pool expansions, or conversion of SAFE notes.

## Architectural Mechanics & Deep Dive
Cap Table Dilution refers to the reduction in existing shareholders' equity ownership percentage caused by the issuance of new stock, option pool expansions, or conversion of SAFE notes.

## Industry Applications & Real-World Use Cases
Founder equity modeling, unallocated option pool sizing, and venture round structuring

## Frequently Asked Questions

### How does cap table dilution affect startup founders?
When new shares are issued in a funding round, the total share count increases, reducing the founder's percentage ownership of the business.

### Does dilution always decrease the financial value of founder shares?
Not necessarily. If the company's valuation increases significantly in the funding round, a smaller percentage of a larger company equals a higher total dollar value.

## Related Terminology
- [pro-rata-rights](https://spidits.com/startup-glossary/pro-rata-rights)
- [pre-money-valuation](https://spidits.com/startup-glossary/pre-money-valuation)
- [safe-agreement](https://spidits.com/startup-glossary/safe-agreement)

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*From the SPIDITS AI Knowledge Base (311+ terms indexed). Explore full technical definitions: [https://spidits.com/startup-glossary](https://spidits.com/startup-glossary)*