Memoir, Inc. (Chapter)

What does Memoir, Inc. own?

The company owns the Chapter brand and operates Medicare advisory services through its wholly owned subsidiary Chapter Advisory, LLC, the licensed insurance agency, plus the Chapter Technologies affiliate for platform operations.

Is Memoir, Inc. publicly traded?

No. The company is privately held. It was valued at $3 billion in an April 2026 Series E funding round with no announced plans for a public listing.

Who founded the company?

Cobi Blumenfeld-Gantz, Corey Metzman, and Vivek Ramaswamy founded the company in New York in 2020. Blumenfeld-Gantz, a former Palantir employee, serves as CEO.

Where is the company headquartered?

Memoir, Inc. is headquartered at 19 Union Square West, 12th Floor, New York, New York, United States.

How many brands does the company own?

One consumer-facing brand, Chapter, covering all Medicare advisory and navigation services.

Who owns Memoir, Inc.?

Ownership rests with the founders and venture investors including Generation Investment Management, Stripes, XYZ Venture Capital, Addition, Narya Capital, Susa Ventures, Maverick Ventures, 8VC, and Fifth Down Capital.

What is the company's revenue?

The company reported surpassing $100 million in annual recurring revenue in 2026, with revenue tripling in 2025 on flat corporate headcount.

Cobi Blumenfeld-Gantz founded the company in 2020 after five years at Palantir, where he worked on data problems in complex regulated industries. Co-founders Corey Metzman, also a Palantir colleague, and Vivek Ramaswamy, the entrepreneur who later ran for president and pursued the Ohio governorship, joined the founding. The concept applied Palantir-style data analysis to Medicare plan selection: treating the choice among thousands of plans as an information problem that technology could solve at scale.

Chapter Medicare, LLC registered in Delaware in July 2020, with the operating company Memoir, Inc. established as the parent entity and Chapter Advisory, LLC formed as the licensed insurance agency subsidiary. Early funding attracted a politically diverse syndicate: Peter Thiel backed the September 2021 Series A of $17 million, and JD Vance's Narya Capital was an early investor.

Growth tracked the Medicare Advantage enrollment surge nationally. A January 2022 Series B added $42 million, and a May 2024 Series C led by XYZ Venture Capital added $50 million, bringing total funding to $111 million. The platform combined licensed human advisors with a proprietary recommendation engine analyzing plan data across the entire market.

A May 2025 Series D raised $75 million as revenue began compounding sharply. By early 2026 the company reported more than $100 million in ARR, tripling revenue in 2025 while holding corporate headcount flat, evidence of platform leverage in a labor-intensive brokerage industry.

The April 2026 Series E raised $100 million led by Generation Investment Management, Al Gore's firm, at a $3 billion valuation. New investors Fifth Down Capital and 8VC joined existing backers Stripes, XYZ Venture Capital, Addition, Narya Capital, Susa Ventures, and Maverick Ventures, bringing total funding to approximately $284 million. Former Clinton administration HHS Secretary Donna Shalala sits on the board, completing a cap table and governance structure that spans the US political spectrum deliberately.

The company's stated ethics position centers on advisory integrity: full-market plan comparison rather than carrier-steered recommendations. It holds no B Corp certification and does not appear in independent social or environmental certification registries.

As a licensed insurance agency, Chapter Advisory operates under state insurance regulations and Medicare marketing rules. Its full-market comparison model is a self-declared standard rather than a third-party certification, and its independence claims are not subject to external verification frameworks.

Chapter's controversy is industry reputational rather than legal. Its marketing directly attacks the traditional Medicare broker model, and CEO Cobi Blumenfeld-Gantz's combative public posture has made him a polarizing figure in the insurance brokerage community, where critics question whether the company's commission revenue creates the same incentives it criticizes.

The co-founder connections carry political attention. Vivek Ramaswamy co-founded the company before his political career, and JD Vance's early investment through Narya Capital links the company to the sitting vice president. The company mitigates through deliberate bipartisanship, including Donna Shalala's board seat and Generation's lead investment.

No regulatory enforcement actions, license revocations, or legal findings against the company are on record as of October 2026.