Every company starts private. Founders, early employees, and sometimes venture investors hold all the shares, and there's no public market to trade them on. Some companies stay that way forever; others eventually go public, listing shares on an exchange where anyone can buy in.
What Makes a Company Public
A public company has sold shares to the general public, usually through an initial public offering, and those shares now trade on an exchange like the NYSE or Nasdaq. Going public gives a company access to a much larger pool of capital and liquidity for its early investors, but it comes with an entirely new set of legal obligations.
Public companies must file detailed, regular financial reports with the SEC, hold shareholder meetings, and generally operate under far more scrutiny than a private business ever would.
What Makes a Company Private
A private company's shares are held by a limited group — founders, employees, private equity or venture capital firms, and sometimes family members — and are not available for the general public to buy on an open market. Private companies still have shareholders and can still issue stock, but transferring those shares typically requires the company's approval and isn't nearly as liquid as trading on an exchange.
Disclosure and Transparency Differences
This is the sharpest practical difference. A public company's revenue, profit, debt levels, and executive pay are all a matter of public record, updated quarterly. A private company can keep nearly all of that confidential, sharing detailed financials only with its actual investors and lenders, not the general public.
Core differences at a glance
| Feature | Public Company | Private Company |
|---|---|---|
| Who can buy shares | Anyone, via a stock exchange | Limited group, by approval |
| Financial disclosure | Detailed SEC filings, quarterly | Confidential, investors only |
| Liquidity | High, trades daily | Low, hard to sell quickly |
| Regulatory burden | Extensive | Minimal by comparison |
| Access to capital | Broad public markets | Limited to private investors |
How a Private Company Goes Public
The most common route is an IPO, where the company works with investment banks to price and sell an initial batch of shares to institutional and retail investors. Some companies instead use a direct listing, skipping the traditional underwriting process, or merge with a special purpose acquisition company. Whatever the route, going public means accepting far greater ongoing transparency in exchange for access to public capital.
Can Regular Investors Buy Private Company Stock?
Generally, no — not easily. Private company shares are typically restricted to accredited investors, employees, or institutional funds, though some newer platforms have opened limited access to private equity for retail investors under specific SEC exemptions. For most people, exposure to a private company only becomes possible once it goes public.
Key Takeaways
- Public companies sell shares on an open exchange; private companies restrict ownership to a limited group.
- Public companies face extensive SEC disclosure requirements; private companies keep financials largely confidential.
- Public shares are far more liquid, trading daily, while private shares are hard to buy or sell quickly.
- Going public, usually through an IPO, trades increased transparency for access to broader capital markets.
- Regular retail investors generally can't buy private company shares until that company goes public.
- Some very large, well-known companies choose to stay private for years to avoid public market pressure.
Frequently Asked Questions
What is the main difference between a public and private company?
The core difference is whether shares are available for the general public to buy on a stock exchange. Public companies are, and face heavy financial disclosure requirements as a result; private companies restrict ownership and keep most financials confidential.
Why would a company choose to stay private?
Staying private avoids the cost and scrutiny of SEC reporting, lets management focus on long-term decisions without quarterly earnings pressure, and keeps competitors from seeing detailed financial data.
How do employees at private companies get paid in equity?
Private companies commonly issue stock options or restricted stock units that vest over time. These shares are illiquid until the company goes public or is acquired, at which point employees can typically sell them.
What happens to outstanding shares when a company goes public?
Existing private shares typically convert into public shares of the same or a related class, and new shares are issued and sold in the offering. See our guide on outstanding shares for how total share counts are tracked and reported.
Conclusion
The public-private divide comes down to a trade: public companies gain access to enormous pools of capital and liquidity in exchange for detailed, ongoing disclosure; private companies keep control and confidentiality but accept a smaller, less liquid pool of potential investors. Neither structure is inherently better — it depends entirely on what a company, and its owners, actually need.