Insurance startup Corgi has closed a second extension of its Series B at a $4 billion valuation, doubling its previous mark, according to sources who spoke with Forbes reporter Anna Tong. TechCrunch, citing the Forbes report published July 22, 2026, notes that the round — referred to internally as B2 — has already closed. The dollar amount raised was not reported.

The pace is remarkable. Corgi, a Y Combinator summer 2024 alum, has now raised three rounds in roughly eight weeks. The sequence: a $160 million Series B at a $1.3 billion valuation in early May 2026; a $106 million B1 extension at $2.6 billion announced May 28; and now the B2 at $4 billion. Before that, the company raised a $108 million Series A in January 2026, with Pitchbook estimating a $630 million post-money valuation (post-money meaning the company's valuation after the investment was added to its balance sheet). At the time of the Series A announcement, Corgi had reached $40 million in annualized revenue run rate — a figure that projects current revenue forward twelve months. Sources told Forbes the company is on track to hit $450 million in annualized revenue run rate by the end of 2026.

Corgi did not immediately respond to TechCrunch's request for comment on the B2 round. The company is backed by TCV and Kindred Ventures; Kindred's Kanyi Maqubela previously cited Corgi's momentum to TechCrunch as justification for the B1 valuation leap from $1.3 billion to $2.6 billion.

Corgi's corporate domain is corgi.insure, where it publishes press releases and featured articles. The company offers AI-powered insurance products spanning general liability, tech-related incident coverage, employment liability, business renters' insurance, auto insurance, D&O (directors and officers liability), E&O (errors and omissions liability), and cyber insurance. It also offers data room software — a secure document-sharing tool commonly used in financial transactions — alongside its insurance platform. The company's May 2026 Series B press release stated it had raised over $268 million in total to date, a figure that predates the subsequent B1 and B2 rounds.

One structural detail that warrants attention: Corgi uses a Risk Retention Group (RRG) insurance structure. An RRG is a self-insurance pool in which members bear the loss if the pool cannot pay claims, and it is not backed by state guaranty funds. That is a materially different risk posture from traditional admitted carriers — the licensed insurers most consumers and businesses are familiar with, whose claims are backed by state-level safety nets. Policyholders and partners should weigh this carefully, particularly given the velocity at which Corgi is scaling its book of business.

Corgi has also drawn notice for its operating culture. The company is known for a seven-day work week policy and operates an all-night cafe in San Francisco. Forbes headlined its July 22 report around the seven-day work week framing, which has become part of the company's public identity.

The valuation trajectory itself is worth pausing on. In roughly seven months, Corgi has moved from a $630 million post-money to a reported $4 billion, a roughly 6.3x increase across four rounds. The revenue figures, if accurate, scale from $40 million annualized run rate in January to a projected $450 million by year-end. Whether that growth is driven by genuine underwriting expansion, aggressive pricing, or a combination of both is not yet publicly documented. The RRG structure means that the usual state-level regulatory backstops do not apply, which compounds the importance of understanding how the underwriting is actually performing.

There is also the question of what the capital is for. Corgi's Series B release framed the raise as expanding its "full-stack insurance platform into new verticals," and the breadth of its product lineup — from auto to D&O to cyber — suggests a land-and-expand strategy across commercial insurance categories. The addition of data room software points to an ambition set that extends beyond pure insurance into adjacent enterprise tooling.

Corgi's May 2026 Series B announcement came roughly five weeks before the B1, which itself closed roughly eight weeks before the B2. Each round has doubled or nearly doubled the prior valuation. Kindred Ventures' Maqubela framed the B1 jump as a response to business momentum; no equivalent on-the-record justification has surfaced yet for the B2 leap to $4 billion.

For now, the facts are these: a company under two years old, still in the Y Combinator alumni class of summer 2024, has raised four rounds totaling well over $500 million in under a year, with a valuation that has scaled from $630 million to $4 billion. The revenue projection — $450 million run rate by December — if realized, would represent an elevenfold increase from January's $40 million figure. The RRG structure, the seven-day work week, the all-night cafe, and the addition of non-insurance software products all sit alongside that financial trajectory. What remains undocumented is the loss ratio (the percentage of premiums paid out as claims), the claims experience, and the long-term sustainability of the underwriting itself. Those are the numbers that will determine whether this trajectory holds.