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Sheryl Sandberg and Hillary Clinton onstage at the Women for Women 20th Anniversary Gala celebration at the American Museum of Natural History on December 3, 2013 in New York City.  Shahar Azran—Getty Images

5 Business Bigwigs With Cameos in the Hillary Clinton Email Leaks

Updated: Oct 14, 2016 8:35 PM UTC

WikiLeaks has pulled back the curtain on Hillary Clinton's presidential campaign by releasing hacked emails from campaign chairman John Podesta's personal Gmail. While much of the attention paid to the messages has focused on policy deliberations and the extreme care with which Clinton's campaign messaging is honed, several major business figures have made cameos.

Here are five of them, along with how they came up:

▸ Herb Sandler

Herbert M. Sandler, president of Sandler Foundation at his office in San Francisco Herbert M. Sandler, president of Sandler Foundation at his office in San Francisco on Wednesday, Dec. 3, 2008. Peter DaSilva—The New York Times/Redux

Herb Sandler, former co-CEO of Golden West Financial Corporation, emailed often with Podesta, discussing personal matters as well as the presidential campaign. At one time, he voiced concerns about a Clinton fundraiser hosted by Theranos founder Elizabeth Holmes, whose company is now facing a lawsuit from a major investor after shutting down its blood-testing labs and laying off about 40% of its employees.

“I don’t think it was wise to have Elizabeth Holmes host a Clinton event,” Sandler wrote in March. “There are significant questions concerning Holmes and her company. She may come out all right, but it is certainly possible that everyone associated with her venture will be embarrassed.”

▸ Sheryl Sandberg

Key Speakers At Advertising Week Sheryl Sandberg, chief operating officer of Facebook Inc., listens during an Advertising Week session in New York, U.S., on Tuesday, Sept. 27, 2016. Michael Nagle—Bloomberg via Getty Images

Facebook (fb) chief operating officer Sheryl Sandberg met with Clinton’s team in March 2015 to take them through "research on gender and leadership by women.”

Clinton has mentioned Sandberg’s Lean In during campaign speeches when discussing women in the workforce.

▸ Howard Schultz

Starbucks Holds Annual Shareholders Meeting Starbucks CEO Howard Schultz speaks about the Christmas cup controversy during the Starbucks Annual Shareholders Meeting on March 23, 2016 in Seattle, Washington. Stephen Brashear —Getty Images

Starbucks (sbux) CEO Howard Schultz emailed Clinton adviser Cheryl Mills in July 2015 with advice about the campaign’s style and branding.

“Her inner circle and the powers to be, need to reject the status quo, and understand how brands (and she is a brand) in the world we now live in are built,” he wrote. “It requires a vision for the future that is steeped in truth and authenticity and builds an enduring emotional connection with the voters.”

He signed the email with a disclaimer: “I'm not a politician and certainly not a pollster. Just one person with one vote, who cares deeply about the country and the dire need for authentic leadership.”

▸ Carlos Slim

Mexican tycoon Carlos Slim walks after he launched a free online platform for education with free access to mobile WiFi connections to the Internet on his Infinitum service during a news conference at Soumaya museum in Mexico City Mexican tycoon Carlos Slim walks after he launched a free online platform for education with free access to mobile WiFi connections to the Internet on his Infinitum service during a news conference at Soumaya museum in Mexico City, Mexico, June 15, 2016. Henry Romero—Reuters

Mexican billionaire Carlos Slim, a Clinton Foundation donor who owns a stake a major stake in the New York Times, is mentioned in some of Podesta’s emails, in discussions about the foundation's work and potential collaborations. Trump launched an effort on Friday in which he accused Slim, without offering any evidence, of trying to help Clinton win the election. The Times has recently reported on women accusing Trump of sexual assault, allegations Trump has denied.

▸ Haim Saban

The Allen & Co. Media And Technology Conference Haim Saban, owner of Saban Capital Group, walks the grounds during the Allen & Co. Media and Technology Conference in Sun Valley, Idaho, U.S., on Wednesday, July 6, 2016. David Paul Morris—Bloomberg via Getty Images

Univision Communications chairman Haim Saban corresponded frequently with the Clinton campaign, offering advice and words of encouragement, according to the emails.

“Haim thinks we are under reacting to Trump/Hispanics. Thinks we can get something by standing up for Latinos or attacking R's for not condemning,” Podesta wrote in a July 2015 email to others in the campaign.

Saban and his wife have donated $10 million to a super PAC supporting Clinton.