---
title: "What Is Option Overhang?"
term: "Option Overhang"
description: "Option overhang is the gap between shares reserved or granted under a company's equity plan and shares that have actually been issued upon exercise—unexercised options that still count in fully diluted ownership."
date: 2026-07-25T00:00:00.000Z
updated: 2026-07-25T00:00:00.000Z
topics: ["venture-capital"]
source: https://venturecapitaltracker.com/glossary/option-overhang
---

# What Is Option Overhang?

> Option overhang is the gap between shares reserved or granted under a company's equity plan and shares that have actually been issued upon exercise—unexercised options that still count in fully diluted ownership.

**Option overhang** is the equity overhang from options—granted but unexercised awards and sometimes unissued pool reserves—that increases fully diluted share count before cash hits the company.

### How it works

When employees hold vested or unvested options, those rights sit on top of issued shares. Cap tables typically show "fully diluted" ownership assuming all options exercise and the entire [option pool](/glossary/option-pool) is used. That assumption creates overhang: the difference between basic shares outstanding and the fully diluted total.

Overhang grows when companies grant generously, refresh the pool, or leave many options underwater (strike above fair market value). At exit, only exercised options matter for cash splits—but acquirers and IPO underwriters still care about overhang because unexercised awards may convert, net exercise, or require repricing.

Boards review overhang when approving large grants or considering a sale. Acquirers may ask employees to exercise or cancel underwater options as part of cleanup, which affects retention packages and closing conditions.

### Why it matters

- **Founders:** High overhang shrinks your slice in fully diluted models investors use to negotiate. It also limits room for future key hires unless you expand the pool again.
- **Investors:** Overhang affects returns in waterfall models and signals whether the team is adequately incentivized without excessive dilution to prior rounds.

Review overhang before any secondary or tender offer pricing.

### Common mistake

Ignoring overhang because options are unexercised. Term sheets and acquisition pricing usually assume fully diluted capitalization, which includes overhang.

### Related ideas

See [outstanding options](/glossary/outstanding-options), [option pool](/glossary/option-pool), and [option impact analysis](/glossary/option-impact-analysis).

## FAQ

### What is option overhang in simple terms?

It is the stock options that are outstanding but not yet exercised—plus sometimes unallocated pool shares—counted as if they will become real shares. On a cap table, overhang increases fully diluted share count before anyone pays strike price.

### Why does option overhang matter?

Heavy overhang dilutes founders and early investors at exit and signals how much hiring equity is already spoken for. Buyers and new investors model overhang when pricing rounds and acquisitions.


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Source: https://venturecapitaltracker.com/glossary/option-overhang