Definition
An ownership stake represents an individual's or organisation's economic ownership in a company.
In a startup, ownership is generally represented through shares or other equity interests. If a founder owns 600,000 shares out of 1,000,000 outstanding shares, their ownership stake is 60%, assuming all shares are measured on the same basis.
An ownership stake can provide economic and governance rights, but those rights depend on the type of equity held and the company's legal and financing structure.
How is an ownership stake calculated?
A simplified calculation is:
Ownership Stake = Shares Owned ÷ Total Relevant Shares × 100
For example:
Shares owned: 250,000
Total shares: 1,000,000
250,000 ÷ 1,000,000 × 100 = 25%
The holder therefore has a 25% ownership stake under that calculation.
The phrase "total relevant shares" matters because ownership can be calculated on different bases, including issued shares or a fully diluted basis that accounts for certain options and other securities.
Ownership stake vs. equity
These terms are closely related but are not identical.
Equity refers to an ownership interest in a company.
Ownership stake describes the amount or percentage of that ownership held by a particular person or entity.
For example:
An investor receives equity representing a 15% ownership stake.
The equity is the ownership interest. The 15% describes its proportion.
Ownership stake and voting rights
A percentage ownership stake does not always equal the same percentage of voting power.
Different classes of shares can carry different voting rights.
For example, a company could have:
Ordinary shares with one vote per share
Another class with multiple votes per share
In such a structure, someone could hold a smaller economic ownership stake but a larger proportion of voting control.
Founders and investors should therefore distinguish between economic ownership and voting control.
Ownership stake and dilution
An ownership stake can decrease when a company issues new shares.
For example, a founder owns:
50% before a financing
The company then issues new shares to an investor.
After the financing, the founder owns:
40%
The founder's ownership stake has been diluted.
Importantly, dilution does not necessarily mean the founder's investment has become less valuable. The company may have raised capital at a valuation that increases the value of the founder's remaining interest.
Ownership stake and valuation
Ownership percentage and company valuation are closely connected.
Suppose an investor invests $1 million for a 10% ownership stake.
Under a simplified post-money calculation:
$1M ÷ 10% = $10M post-money valuation
The existing shareholders collectively retain the remaining 90%.
However, actual transaction calculations can be more complex where option pools, convertible instruments, or other securities are involved.
→ Post-Money Valuation
Ownership stake and the cap table
The cap table records ownership and other securities that can affect ownership.
A simplified cap table might look like:
Holder | Shares | Ownership |
|---|---|---|
Founder A | 600,000 | 60% |
Founder B | 250,000 | 25% |
Investor | 100,000 | 10% |
Employee pool | 50,000 | 5% |
Total | 1,000,000 | 100% |
Each holder's ownership stake can be derived from the relevant ownership calculation.
Economic ownership vs. control
Ownership stake should not automatically be interpreted as control.
A shareholder may have:
Economic rights
Voting rights
Board rights
Protective rights
Information rights
These can differ depending on the company's share classes and agreements.
For example, a founder might own 40% of the economic interest but retain substantial voting control through a different class of shares.
Ownership stake in fundraising
When a startup raises equity financing, founders generally exchange some ownership for capital.
For example:
Before financing
Founder: 100%
New financing
Investor receives: 20%
After financing
Founder: 80%
Investor: 20%
This simplified example assumes no other changes to the capital structure.
The founder has given up 20 percentage points of ownership in exchange for capital that can potentially increase the company's future value.
Ownership stake and future rounds
Ownership can change repeatedly as a company raises capital.
For example:
Seed: Founder 80%, Investor A 20%
Series A: New shares are issued
Founder: 60%
Investor A: 15%
New Investor: 25%
Investor A still owns equity, but its percentage ownership has decreased.
Existing investors may use pro rata rights to participate in subsequent rounds and preserve their ownership percentage.
→ Pro Rata Rights
Example
A company has 2 million relevant shares.
A founder owns 1.2 million.
Their ownership stake is:
1.2M ÷ 2M × 100 = 60%
The company later issues 500,000 new shares to an investor.
If the founder does not acquire additional shares, the founder now owns:
1.2M ÷ 2.5M × 100 = 48%
The founder's ownership stake has fallen from 60% to 48% because of the new issuance.
Common misconception
A 20% ownership stake always means receiving 20% of every dollar the company generates.
No.
Ownership is not the same as a direct entitlement to revenue.
The economic rights of shareholders depend on the company's legal structure, share class, shareholder agreements, distributions, liquidation terms, and other factors.
A company can generate substantial revenue without distributing that revenue to shareholders.
