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For most of its 12 years, Thrive Capital has been known as a fast-growing venture capital firm that struck some savvy deals, most famously an investment in Instagram that doubled in value within days.
But for the past four years or so, the firm and its 35-year-old founder, Joshua Kushner, has become just as well known for something unrelated to the fortunes of the fund: Mr. Kushner’s older brother, Jared, a top adviser and son-in-law to President Donald J. Trump.
Charles Kushner, was imprisoned for two years after pleading guilty to illegal campaign donations and witness tampering in 2005. The brothers have also done business together, co-investing in ventures like Cadre, a real-estate technology start-up. (The younger Mr. Kushner has never formally worked for the family’s real estate business.)
Jared Kushner divested his holdings in Thrive before joining the White House, and no member of the Trump family has invested in the firm, according to a person briefed on the matter. After leaving the White House, Jared has not invested in Thrive.
the Women’s March in 2017 and the March for Our Lives the next year. He has also mostly donated to Democrats over the years, including Beto O’Rourke and Cory Booker.
His wife, the model Karlie Kloss, has been more openly critical of Mr. Trump, from elliptically referring to disagreements with her in-laws on talk shows to holding up a 2020 ballot while wearing a Biden-Harris face mask. (When a Twitter user pressed Ms. Kloss to chide her in-laws over the Jan. 6 Capitol riot and Mr. Trump’s baseless election conspiracy theories, the model responded, “I tried.”)
In private, Mr. Kushner has made his feelings clearer. Stewart Butterfield, the chief executive of Slack, recalled that shortly after the 2016 election, Mr. Kushner, whose fund invested in the workplace messaging firm earlier that year, called him.
“I don’t remember what he said exactly,” Mr. Butterfield said, “but it was a tactful way of saying, ‘These are not my positions.’”