David Karp

Born in New York City, Karp grew up on the Upper West Side of Manhattan. His parents are Barbara Ackerman, a science teacher from San Anselmo, California, and Michael D. Karp, a film and television composer. He has a younger brother named Kevin. His parents separated when he was 17. Karp never returned to high school or earned his high school diploma. ==Career==

Karp began as an intern in 2000 for animation producer Fred Seibert, founder of Frederator Studios. Karp was fascinated with the work of Frederator's computer engineers and his visits became regular. After he started homeschooling, Karp also began taking Japanese classes at the Japan Society and saw a math tutor, with whom he worked on writing software for winning at blackjack and poker. Tumblr was launched in February 2007 and within two weeks, the service had gained 75,000 users. Davidville was renamed Tumblr, Inc. and 25 percent of the company was sold to a small group of investors. As of November 1, 2017, Tumblr hosts over 375.4 million blogs. Karp announced in November 2017 that he would be leaving Tumblr by the end of the year. Karp has made personal investments into several companies including Superpedestrian, Inc., Sherpaa, Inc., and Splash. ==Personal life ==

Karp joined the Planned Parenthood Board of Directors in 2014. In March 2017, Tumblr and Planned Parenthood launched an initiative calling on the tech industry to support Planned Parenthood. Karp endorsed Hillary Clinton for president in the lead-up to the 2016 United States election. He also donated $11,200 to Mark Kelly in his 2020 special election campaign for U.S. Senate, making him the campaign's top individual donor. ==References==