Here is your Forbes Daily Briefing for Sunday, July 21st.

Today on Forbes, Meet the New Biotech Billionaire putting Pig Hearts in Humans.

In 1996, Martin Rothblatt's six-year-old daughter was diagnosed with pulmonary arterial

hypertension, a rare lung and heart disease without a cure. Undeterred, Rothblatt, a co-founder of Serious

Satellite Radio, launched her own biotech firm with the goal of finding one.

Nearly three decades later, Rothblatt's daughter is healthy and in her 30s.

Meanwhile shares of the now publicly traded firm United Therapeutics are up 54

times its price at its 1999 IPO.

This year alone, shares have surged, up 50% so far in 2024,

and up 40% since April 30th,

enough to make Rothblatt the world's newest billionaire.

The Silver Spring Maryland-based business generated 2.1 billion dollars in sales last year,

largely from selling five FDA-approved drugs to help people like Rothblatt's daughter

treat pulmonary arterial hypertension, or PAH.

Investors have been cheering on United Therapeutics since it announced a $1 billion accelerated

stock repurchase program in March, signaling it's bullish about its pulmonary hypertension drugs.

Also driving up the stock as excitement over the 41% year-over-year jump in revenue from its

star drug to Vaiso.

Rothblatt, who is 69 years old, has led the now 14.7 billion dollar market capitalization firm as

CEO since she founded it. She has also been instrumental in helping push its

subsidiary Revivocore into xenotransplantation, specifically manufacturing pig organs

to transplant into humans with end-stage renal and cardiac diseases.

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