Who Owns Costco?

Costco has no owner. Costco Wholesale Corporation is listed on Nasdaq with no controlling shareholder and a single class of stock. Its members do not own it — a membership fee buys access, not equity, which is the commonest misunderstanding about the company. Companies House records the British business as a subsidiary, and its previous names preserve a merger most people have forgotten. Ownership verified 6 September 2026.

Who owns Costco today?

Costco Wholesale Corporation is a public company registered in Washington State. Ownership sits with its shareholders and changes daily; the largest are the index managers — Vanguard, BlackRock and State Street.

The British company is COSTCO WHOLESALE UK LIMITED (02635489), incorporated 6 August 1991 and registered at Hartspring Lane, Watford. Its person with significant control is Costco UK Holdings Limited (03934833), holding 75% or more of shares and voting rights.

Ultimate parent and corporate structure

Above the UK holding company sits Costco Wholesale Corporation, which has no parent.

Costco has a single class of common stock — one vote per share. There is no founder class and no family block, which distinguishes it from Ford, Alphabet, Roblox and the other founder-controlled companies covered on this site. Anyone holding Costco shares holds a proportionate vote.

The company was founded by Jim Sinegal and Jeffrey Brotman, and neither built a control structure into it. Sinegal’s holding is long since immaterial and Brotman died in 2017.

Major shareholders or controlling persons

No individual or institution controls Costco. Index managers hold the largest positions, at mid-single-digit percentages, on behalf of the investors in their funds rather than on their own account.

Members do not own Costco. This is worth stating plainly, because the warehouse-club model invites the assumption. A Costco membership is a paid licence to shop there; it confers no share, no vote, no dividend and no claim on the company’s assets.

That distinguishes Costco sharply from genuinely member-owned organisations covered on this site — the John Lewis Partnership, which holds Waitrose in trust for its staff, and Real Madrid, owned by its socios. Costco is a conventional listed company that happens to charge for entry.

Official records and evidence

Costco files with the US Securities and Exchange Commission, and its annual proxy statement and Schedule 13G filings are the authoritative record of who holds what.

Companies House establishes the UK structure — several companies at the same Watford address covering wholesale, online and travel — and nothing about who controls the group.

The UK company’s previous names are the more interesting register detail: it has been Costco UK Limited, Costco Europe (U.K.) Ltd and PriceCostco Europe (UK) Limited.

Ownership history and changes

Costco began in Seattle in 1983, founded by Jim Sinegal and Jeffrey Brotman, and floated in 1985.

The name preserved in the UK filings comes from its defining transaction. In 1993 Costco merged with Price Club, the San Diego warehouse-club pioneer founded by Sol Price, and the combined company was briefly called PriceCostco before reverting to Costco in 1997. The British company carried the PriceCostco name through that period, and the register still shows it.

Costco has never been acquired. Its UK arrival in 1993 was through a joint arrangement with a British partner, later bought out, and the business has been wholly owned since.

Related companies and brands

Costco owns the Kirkland Signature own-brand, named after the Washington town where the company was then headquartered, and operates its travel, optical, pharmacy and fuel businesses within the same group.

It has no connection to Makro or Booker, the other cash-and-carry operators in Britain — Booker belongs to Tesco. Nor to Sam’s Club, its closest American equivalent, which is owned by Walmart. Warehouse clubs are frequently assumed to be related and are competitors under entirely separate ownership.