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Founders

Who Founded SiriusXM?

David Margolese, Hugh Panero · Founded 2008 · HQ today: New York, New York

Who founded SiriusXM?

SiriusXM was founded by David Margolese, Hugh Panero in 2008. It is now led by Jennifer Witz.

Founders
David Margolese, Hugh Panero
Founded
2008
Headquarters
New York, New York
Number of founders
2
Current CEO
Jennifer Witz (since 2021)
Where was SiriusXM founded?
SiriusXM was founded in New York City, New York, United States in 2008.
When was SiriusXM founded?
SiriusXM was founded in 2008.
Who started SiriusXM?
SiriusXM was founded by David Margolese and Hugh Panero.
How old is SiriusXM?
SiriusXM is 18 years old as of 2026.

Founding Story

SiriusXM began as two rivals. Sirius Satellite Radio was founded in 1990 as Satellite CD Radio, and XM Satellite Radio grew out of American Mobile Radio, with Hugh Panero becoming CEO in 1998. Both launched service in 2001 and 2002 after spending heavily on satellites and receivers, and competed for talent, most famously when Sirius signed Howard Stern in 2004. Regulators approved their merger in July 2008, creating Sirius XM Radio. In early 2009, near a debt default, the company accepted a $530M financing package from Liberty Media, which later gained majority control.

David Margolese

Co-founder 1990

Background

Canadian entrepreneur who previously founded the massive cellular provider Rogers Wireless.

Role at Sirius XM Holdings Inc.

David Margolese founded CD Radio (which was later renamed Sirius Satellite Radio) in 1990. Believing that consumers would pay for commercial-free, digital-quality radio broadcast from space, he spent a decade fiercely lobbying the FCC to allocate satellite frequencies. He raised the massive $1.5 billion required to launch the initial constellation of satellites before resigning as CEO in 2001, just as the service finally launched.

David Margolese was born in 1957 in Vancouver. Education: University of British Columbia.

Margolese was born on October 24, 1957 in Canada. He is regarded as one of the earliest advocates of pay radio.

Hugh Panero

Co-founder 1998

Background

Hugh Panero was the founding CEO of XM Satellite Radio, who secured the critical FCC licensing and raised the initial capital required to build the company's geosynchronous satellite constellation. His defining founding philosophy was a commitment to securing exclusive live sports and talk radio content, building XM into the most culturally relevant audio platform in North America through the acquisition of Howard Stern and the MLB.

Role at Sirius XM Holdings Inc.

Hugh Panero founded XM Satellite Radio in 1998, serving as its CEO until 2007, and led the company through its initial public offering and the launch of its first satellites in 2001. Under his leadership, XM grew through disciplined content acquisition, securing exclusive rights to live sports and the most valuable talk radio personalities in the industry. Panero instilled a culture of aggressive content monetization and premium subscription pricing, making XM the preferred audio destination for millions of American drivers. He led the company's initial negotiations with Sirius, recognizing that the duopoly was financially unsustainable and that a merger was the only path to long-term profitability. Panero resigned in 2007 prior to the finalization of the 2008 merger, but his legacy is a company that proved that consumers would pay a premium for exclusive, live, unscripted audio content, a philosophy that remains the core tenet of Sirius XM's self-pay subscription model today. (Exact birth year remains publicly undisclosed).

Sirius XM Holdings Inc.: CEO & Leadership History

Full timeline →

Jennifer Witz

Chief Executive Officer

2021 – Present

Witz joined SiriusXM in 2002 and became CEO in January 2021 after serving as President of Sales, Marketing and Operations. She led the 2024 combination with Liberty Media's SiriusXM tracking stock, the 360L in-car rollout, and the push into podcasts and advertising.

Jim Meyer

Former Chief Executive Officer

2013 – 2020

As CEO, he secured incredibly lucrative, long-term deals with major automakers to ensure SiriusXM hardware remained pre-installed in nearly every new car sold in the US.

Keep researching SiriusXM

Who Founded SiriusXM? FAQ

Who were the original founders of Sirius Satellite Radio?

Sirius was founded in 1990 in New York City by visionary technologist and attorney Martine Rothblatt, Canadian telecommunications entrepreneur David Margolese, and former NASA communications engineer Robert Briskman.

Who is Martine Rothblatt and what was her role in founding Sirius?

Dr. Martine Rothblatt conceived the original idea of nationwide, satellite-delivered digital audio radio and founded Satellite CD Radio in 1990. She successfully petitioned the FCC to allocate dedicated satellite radio frequencies before stepping down to later found biotech giant United Therapeutics.

Who was Robert Briskman and what was his engineering breakthrough?

Robert Briskman was a legendary space engineer who worked at NASA during the Apollo program and at Comsat. He served as Chief Technical Officer of Sirius, designing the elliptical orbit satellite constellation and terrestrial repeater network that enabled uninterrupted in-car reception.

Who was David Margolese and how did he finance the startup?

David Margolese acquired a controlling stake in Satellite CD Radio in 1993, served as CEO, and raised over $1.2 billion in public equity and junk bond debt on Wall Street to build satellites, sign carmakers, and rebrand the company as Sirius Satellite Radio.

Who founded rival XM Satellite Radio?

XM Satellite Radio originated within American Mobile Satellite Corporation (AMSC) in 1992, spearheaded by Noah Samara (founder of WorldSpace) and telecom executive Lon Levin, with Hugh Panero brought in as CEO in 1998 to launch the commercial business.

What initial regulatory challenges did the founders face at the FCC?

The founders spent seven years (1990-1997) battling the National Association of Broadcasters (NAB), which lobbied fiercely against satellite radio licenses claiming national satellite broadcasts would destroy local community radio stations.

What unique satellite orbital configuration did Sirius design?

Unlike traditional geostationary satellites stationed over the equator, Briskman designed Sirius's initial satellites (Radiosat 1-3) into an elliptical "tundra" orbit inclined at 63 degrees, ensuring that at least one satellite was positioned high in the northern sky directly above the continental United States.

Why did Martine Rothblatt leave Sirius?

After securing the regulatory framework and initial FCC allocation for satellite radio, Rothblatt departed in the mid-1990s when her daughter was diagnosed with pulmonary arterial hypertension, leading her to found United Therapeutics to invent life-saving medical treatments.

What was the relationship between the founders of Sirius and XM?

Throughout the late 1990s and early 2000s, the two founding teams were bitter rivals, spending billions in an escalating space race to launch satellites, sign exclusive automotive manufacturers, and bid up celebrity talent contracts.

What awards and honors have the founders received?

Robert Briskman was inducted into the Space Foundation Technology Hall of Fame and the IEEE Broadcast Technology Society Hall of Fame, while Martine Rothblatt is widely recognized as one of the world's leading transhumanist and aerospace pioneers.

How did the founders solve the problem of satellite blockage under bridges and tunnels?

The engineering founders deployed a hybrid network: high-power satellites in space coupled with thousands of ground-based terrestrial repeaters in major metropolitan cities that rebroadcast the signal to eliminate dead zones between tall skyscrapers and under overpasses.

What is the enduring legacy of the SiriusXM founders?

The founders created an entirely new global consumer telecommunications industry from scratch, proving that consumer drivers would gladly pay a recurring monthly fee for high-quality, commercial-free digital audio in their cars.

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Content is for informational purposes only. Not financial advice. Data sourced from SEC filings, annual reports, and public records. See our full disclaimer and methodology.