It's the latest chapter in what has become perhaps the most enticing tech story of the year that, many might argue, begins with the bombshell blog by former Uber engineer Susan Fowler that reveals systemic sexism at Uber.
Things started to sour earlier this year, however. Here's how it all went down:
Kalanick a lightning rod for Trump criticism
December 14: Reports reveal Kalanick is joining Trump's business advisory board.
January 19: Protesters chain themselves to doors at Uber's offices in San Francisco and begin to boycott the service.
January 19: FTC charges Uber with a $20 million fine for recruiting drivers while exaggerating earnings potential.
If that was a spark, what followed was a forest fire
February 19: Former Uber engineer Susan Fowler posts her now-famous blog post detailing sexism within the company.
February 20: Uber calls for an internal investigation, known as the "Holder investigation" after former US Attorney General Eric Holder, who's leading it.
February 23: Alphabet's Waymo unit files a lawsuit against Uber claiming that a former Waymo employee, Anthony Levandowski, stole secrets related to autonomous vehicle technology.
February 27: Uber SVP of engineering Amit Singhal leaves the company after it was revealed that he had left Google a year earlier due to a "credible" sexual harassment complaint.
February 28: Travis Kalanick apologises after he's caught on film arguing with an Uber driver, Fawzi Kamel, about Uber's new plans to lower fares. "Some people don't like to take responsibility for their own s---. They blame everything in their life on somebody else. Good luck," Kalanick told his driver.
March 3: The New York Times reveals that Uber has been using a feature named "Greyball" that showed people it suspected to be government officials a fake version of the app that would deny them a ride. This was used by Uber to operate in areas where its service was deemed illegal without being caught.
Exodus followed by more scandal
March 3: On the same day, Charlie Miller, Uber vice president of product and growth and self-driving senior engineer, leaves the company.
March 8: Artificial intelligence labs director Gary Marcus leaves the company.
March 16: Self-driving director Raffi Krikorian leaves.
March 19: Uber president Jeff Jones departs the company.
March 20: Uber's vice president of maps and business platforms, Brian McClendon, leaves.
March 24: Gabi Holzwarth, who dated Kalanick for several years, revealed to The Information that she, Kalanick, and five Uber executives who had travelled to Seoul in 2014 visited an escort bar while there. A female marketing executive who was in the group told Holzwarth later that she felt Uber tried to silence her complaints.
May 15: Judge blocks Levandowski from working on any technology related to LIDAR, which is key to the development of Uber's autonomous vehicles.
May 30: Uber fires Levandowski, stating that he didn't fully co-operate with the court or with helping Uber to prove its case.
June 8: Bombshell letter reveals the type of boss Kalanick was. In the letter, dated 2013, Kalanick discusses a company trip to Miami and lays out ground rules for consensual employee sex practices. "Have a great f--king time," he says.
June 1: Uber board meets to begin discussing the findings of the Holder report before it is released to the company. During the meeting, David Bonderman makes sexist remarks about women.
The Holder Investigation report is released
June 6: Uber says more than 20 staff members have been fired as part of the internal investigation.
June 13: The Holder report is released, and it makes 47 recommendations to help Uber improve its values and workplace environment. Kalanick, who recently lost his mother, decides to step away from the company temporarily. Uber says his duties will be replaced by an independent chair.
June 13: Uber board member Bonderman resigns after making sexist remarks during the board's review of the Holder report.
June 14: New York judge rules that Uber drivers should receive employee benefits, negating Uber's claims that its drivers are merely contractors.
June 14: The Federal Trade Commission begins looking into Uber's privacy practices, possibly digging deeper into the company's "god view" tool and other concerns, according to Recode.
June 15: A rape victim filed a lawsuit against Uber after she found out that executives had taken her medical records. The 26-year-old woman was raped by an Uber driver in India in 2014, and the driver was convicted of the crime.
Travis Kalanick resigns
"I love Uber more than anything in the world and at this difficult moment in my personal life I have accepted the investors request to step aside so that Uber can go back to building rather than be distracted with another fight," Kalanick said in a statement obtained by The New York Times.