Can 20% ownership control a company?
A share of common stock usually carries one vote, so it is easy to assume that ownership and voting power are the same. In a dual-class company, however, each class of shares carries a different number of votes per share. If a founder's shares carry ten votes each and public shareholders' shares carry one, a 20% economic stake can control a majority of the votes.
This guide calculates, with a hypothetical voting table, how economic ownership and voting power diverge in a dual-class structure. It shows how new share issuance, the transfer and conversion of high-vote shares, and sunset clauses shift the balance, and lists what to look for in company filings.
Rights by share class
Dual-class companies typically issue two or more classes of stock. The listed class trades publicly with one vote per share, while shares held by founders or early executives carry several votes each. The classes often have equal rights to dividends and to remaining assets in a liquidation, so the economic stake and the decision-making stake move separately.
The charter or registration statement sets out each class's votes per share, dividend rights, the conditions for converting high-vote shares into ordinary shares, and how transfers are treated. Some matters may require a separate vote by each class, so the single figure of ten votes per share does not tell the whole story.
Calculating voting power
Voting power is a holder's share of total votes, where total votes are the number of shares in each class multiplied by its votes per share, then added together. Economic ownership is simply the holder's share of all shares outstanding, regardless of votes. Putting the two numbers side by side reveals the structure's effect.
The table describes a hypothetical company with 100 million shares. The founder owns all 20 million Class A shares at ten votes each, and public shareholders own 80 million Class B shares at one vote each. It compares the founder's economic stake and voting power as circumstances change.
| Situation | Class A (10 votes) | Class B (1 vote) | Founder's economic stake | Founder's voting power |
|---|---|---|---|---|
| Starting structure | 20 million | 80 million | 20.0% | 71.4% |
| 20 million new Class B shares issued | 20 million | 100 million | 16.7% | 66.7% |
| Founder sells 10 million Class A (converted to B) | 10 million | 90 million | 10.0% | 52.6% |
| Sunset triggered (all A converted to B) | 0 | 100 million | 20.0% | 20.0% |
In the starting structure, total votes are 200 million from Class A plus 80 million from Class B, or 280 million. The founder's voting power is 200 ÷ 280 ≈ 71.4%.
Events that shift the balance
As the table shows, issuing new shares cuts the founder's economic stake to 16.7%, but because the new shares carry one vote each, voting power slips only to 66.7%. Repeated equity raises or stock compensation in the low-vote class may barely loosen control.
Many companies provide that high-vote shares convert automatically into ordinary shares when transferred to someone else. If the founder sells half the Class A shares, the economic stake falls to 10%, and because the sold shares now carry one vote, voting power drops sharply to 52.6%. Depending on how much is sold, there is a point where the majority disappears, so when a major holder's sale is disclosed, check which class was sold.
What a sunset clause does
A sunset clause converts all high-vote shares into ordinary shares after a set period following the listing, when the founder leaves or dies, or when high-vote shares fall below a set fraction of the total. The Council of Institutional Investors says it has pressed dual-class IPO companies to include reasonable time-based sunset provisions.
When a sunset triggers, economic ownership and voting power become equal, as in the last row of the table. If the trigger is distant, such as twenty years after listing, or if an extension vote is effectively decided by the high-vote holders, the practical effect can be weak. The conditions and exceptions matter more than the clause's existence.
Reading the filings
For U.S. listed companies, rights by class appear in registration statements, annual reports, and proxy statements on SEC EDGAR; for Korean companies, in the articles of incorporation and business reports on DART. Work through these steps.
- Find shares outstanding and votes per share for each class, then calculate total votes and the main holders' voting power yourself.
- Check whether high-vote shares convert to ordinary shares on transfer or inheritance, and whether there are exceptions.
- Read the sunset clause's triggers (time, ownership threshold, departure) and any extension procedure.
- Find which matters require a separate vote by each class in the charter.
- When a major holder discloses a sale or pledge, note which class was involved and recalculate voting power.
Governance and shareholder rights
Dual-class structures are praised for letting founders pursue long-term plans without short-term market pressure and criticized for making it hard for outside shareholders to hold management to account. CII cites academic research suggesting that any valuation premium for dual-class companies tends to fade some years after listing.
If public shareholders' votes are nearly meaningless, they will find it hard to influence director elections or mergers. It then becomes more important to see how other checks work, such as board composition, the share of independent directors, and disclosure of related-party transactions.
A quick test is to ask what would happen if the founder and the board disagreed with every other shareholder on a major decision. If the voting table shows the founder wins regardless, the remaining protections are the board, the law, and disclosure.
Limits of the analysis
The share counts and percentages here are hypothetical and illustrate the calculation. Real companies may have three or more classes, and voting agreements or shareholder pacts can make effective control differ from the table. Countries also differ in whether and how they allow dual-class shares.
When looking at a real company, check its latest charter and filings with their dates and calculate voting power yourself. This guide does not recommend buying or selling any security.