Public vs. Private Companies: What's the Difference?
By Markets & Investing DeskUpdated Nov 10, 2026
Key takeaways
- Public companies register with the SEC and file 10-K, 10-Q, 8-K and proxy statements; private companies generally do not.
- Regulation D lets private companies sell shares mainly to accredited investors without registering with the SEC.
- A company with over $10 million in assets and 2,000 or more record holders generally must register with the SEC, even without an IPO.
- In the U.K., a plc may offer shares to the public and needs at least £50,000 of allotted share capital, but it need not list.
A public company has sold shares to outside investors, usually through an initial public offering (IPO), and those shares can then trade among members of the public. A private company is held by its founders, management, employees and invited investors, and the general public cannot buy in at will. The legal consequence matters more than the label. In the U.S., going public means registering with the Securities and Exchange Commission (SEC) and filing regular, detailed financial reports. A private company generally owes that information only to its own owners and lenders.
What is a public company?
A public company has offered ownership to outside investors and, in most cases, lists its shares on a stock exchange such as the New York Stock Exchange or Nasdaq, where they change hands every trading day.
Shareholders own a claim on part of the company’s assets and profits, and common shareholders typically vote on board members and major decisions such as mergers. Large institutional holders, activist investors and proxy votes can push management to change strategy, cut costs or replace executives.
Exchanges also set continued listing standards, such as minimum share prices, market values and governance rules. A company that falls below them can be delisted.
Public status brings constant attention: the financial press reports earnings, executive changes, lawsuits and setbacks, analysts publish forecasts, and the share price reacts in real time. Many of the largest public companies, including Apple, Microsoft, Nvidia, Amazon and Alphabet, sit in indexes such as the S&P 500.
What is a private company?
A private company is owned by the people who started it and those they invite to invest: family members, managers, employees with equity, venture capital and private equity funds, or wealthy individuals. Outsiders cannot simply buy shares on an exchange.
Privately held businesses range from a local bakery to some of the largest firms in the country. Cargill, Koch Industries, Publix Super Markets, Mars, H-E-B, Enterprise Mobility and Fidelity Investments are well-known U.S. companies that remain private.
Because they are not offering securities to the public, private companies generally do not file disclosure reports with the SEC, and management can make long-term decisions without quarterly pressure from the stock market. The trade-off is that raising large sums is harder, and owners who want to sell have fewer buyers.
Public vs. private companies: key differences
| Dimension | Public company | Private company |
|---|---|---|
| Who owns it | Insiders plus any investor who buys shares | Founders, management, employees, invited investors |
| How shares trade | On a stock exchange or public market | Privately negotiated sales, often with transfer restrictions |
| Main capital sources | Stock offerings, bond issues, bank loans, retained profits | Retained profits, bank loans, venture capital, private equity, private placements |
| SEC reporting | Registers with the SEC; files 10-K, 10-Q, 8-K and proxy statements | Generally none, beyond limited notices for certain private offerings |
| Share price | Set continuously by the market | Set by negotiation, funding rounds or formal valuation |
| Outside influence | Shareholder votes, analysts, media, activists | Owners, board and lenders |
| Compliance cost | High: audits, internal controls, investor relations | Lower, though audits may be required by lenders or investors |
Ownership and control
In a private company, control usually stays concentrated. Founders or a controlling family can make decisions with a few signatures, keep strategy confidential and choose who becomes an owner. Shareholder agreements often restrict who can buy shares and give the company or existing owners the first right to purchase any stake being sold.
A public company spreads ownership across many holders. Founders may keep control through large stakes or dual-class shares with extra voting power, but they still answer to a board with fiduciary duties to all shareholders and to annual votes on directors and executive pay.
Raising capital
Access to capital is the biggest practical advantage of being public. A listed company can sell additional shares (a secondary or follow-on offering) or issue bonds to a wide pool of investors to fund acquisitions, expansion or debt repayment. Bonds must be repaid with interest but cost existing owners no ownership. New stock avoids repayment but dilutes existing shareholders.
Private companies fund growth from operating profits, bank loans and private investors. They can also sell shares without registering with the SEC under exemptions such as Regulation D, which allows private placements mainly to accredited investors: institutions and people with at least $1 million in net worth excluding their primary residence, or income above $200,000 ($300,000 with a spouse) in each of the last two years. Venture capital and private equity rounds work this way. With a smaller pool of buyers and negotiated terms, the money is often more expensive or harder to get than for a comparable public company.
Disclosure and regulation
U.S. public company disclosure rests on the Securities Act of 1933, which governs offerings, and the Securities Exchange Act of 1934, which governs ongoing reporting. A registered company files:
- Form 10-K: an annual report with audited financial statements, including the income statement, balance sheet and cash flow statement, plus risk factors and management’s discussion of results.
- Form 10-Q: a quarterly report with unaudited financial statements.
- Form 8-K: a current report for material events such as an acquisition, an executive departure or a bankruptcy filing.
- Proxy statements: details on board elections, executive compensation and matters put to a shareholder vote.
The Sarbanes-Oxley Act of 2002 requires executives to certify financial reports and companies to maintain and assess internal controls over financial reporting, which adds audit fees, legal work and staff time.
A private company can keep revenue, margins and strategy confidential from competitors. It still pays taxes, follows employment and industry rules, and may need to give audited statements to banks or investors. It simply does not publish them.
Private status has a limit. Under Section 12(g) of the Exchange Act, a company with more than $10 million in assets and securities held of record by 2,000 or more people (or 500 or more who are not accredited investors) generally must register with the SEC and begin reporting, even without an IPO.
Liquidity and valuation
Public shares can usually be sold within seconds at the current market price, and that price gives a constant, visible measure of what the company is worth. Private shares have no exchange. An owner who wants out must find a buyer, get approval under the shareholder agreement and agree on a price. Valuing a private company relies on business valuation methods such as comparable companies, discounted cash flow or recent funding rounds, often with a discount for the lack of marketability.
Public company vs. listed company, and plc vs. Ltd
“Public” and “listed” usually go together in the U.S., but they are not identical. A company can have public reporting obligations while its shares trade over the counter rather than on a major exchange.
In the U.K. and many Commonwealth countries, the terms are legal forms. Under the Companies Act 2006, a public limited company (plc) may offer its shares to the public and must have at least £50,000 of allotted share capital. A private limited company (Ltd) may not offer shares to the public. A plc does not have to be listed on a stock exchange, so “public” there means the company is allowed to sell shares to the public, not that it does.
“Public company” also does not mean government-owned. A business owned by the state is usually called a state-owned enterprise or part of the public sector. A publicly traded company is owned by private investors who happen to buy its shares on a public market.
Moving between structures
How private companies go public
The usual motive is capital: raising a large sum now and gaining a market where the company can raise more later. Going public also lets founders, employees and early investors sell shares, and listed stock can pay for acquisitions and employee compensation. The main routes are:
- Traditional IPO: investment banks underwrite the offering, set a price and sell new shares to investors.
- Direct listing: existing shares begin trading on an exchange without an underwritten sale of new shares.
- SPAC merger: a listed shell company formed to make an acquisition merges with the private company, which becomes public as a result.
How public companies go private
A public company becomes private when a buyer acquires enough shares to delist it and end its SEC registration. The buyer is often a private equity firm in a leveraged buyout, a founder or a management group. Shareholders typically approve the deal by vote, or the buyer makes a tender offer for the shares. Many going-private deals led by insiders also require a disclosure filing under SEC Rule 13e-3. Dell went private in 2013 and returned to public markets in 2018. Twitter was taken private in 2022.
Buyers take companies private to escape quarterly earnings pressure, cut compliance costs or carry out restructuring that would be hard under public scrutiny.
When each structure fits
Staying private tends to suit a business that can fund growth from profits and loans, owners who want to keep control and confidentiality, and companies in a long turnaround or investment phase that quarterly reporting would make harder to explain. Family-owned firms and businesses backed by private equity often fit here.
Going public tends to suit companies that need more capital than private investors will provide on acceptable terms, have many early investors and employees who need a way to sell, or want a share price that buyers, lenders and acquisition targets can see. It requires the size and systems to handle audits, internal controls and investor relations year after year.
For investors, the difference is access. Anyone with a brokerage account can buy public stock, read the company’s filings and sell at any time. Private company investments are generally limited to accredited investors, provide less information and may be impossible to sell for years.
FAQs
Can employees sell shares in a private company?
Sometimes, but rarely freely. Stock options and restricted shares in private companies usually come with transfer restrictions and company approval rights. Employees may get a chance to sell through a company-run tender offer, an approved secondary sale or a later IPO or acquisition.
The Bottom Line
The choice affects founders weighing control against capital and investors weighing access against information. Staying private suits owners who can fund growth from profits and loans and want confidentiality, while going public suits firms that need large sums and can carry the cost of audits and reporting. Anyone with a brokerage account can buy and sell public stock, but private stakes are mostly limited to accredited investors and may be hard to sell for years.
