Tumblr founder and CEO David Karp is leaving the company after more than a decade

Tumblr CEO David Karp, who founded the blogging service back in 2007, is leaving the company.

Karp posted the announcement on his personal blog Monday after sharing it internally with Tumblr’s team. Jeff D'Onofrio, Tumblr’s president and COO, will take over while the company seeks a permanent replacement, according to The Verge.

Tumblr has been through some massive organizational changes over the past five years. Yahoo first purchased Tumblr for a little over $1 billion back in 2013. Then Verizon purchased Yahoo, including Tumblr, for almost $4.5 billion in a deal that closed earlier this year, combining Yahoo and AOL into a new subsidiary called Oath.

It’s not immediately clear why Karp is leaving, though a decade at one company, even one you founded, is an eternity in the world of tech. “I beg you to understand that my decision comes after months of reflection on my personal ambitions, and at no cost to my hopefulness for Tumblr’s future or the impact I know it can have,” he wrote.

This article originally appeared on Recode.net.

Will you support Vox’s explanatory journalism?

Most news outlets make their money through advertising or subscriptions. But when it comes to what we’re trying to do at Vox, there are a couple reasons that we can't rely only on ads and subscriptions to keep the lights on.

First, advertising dollars go up and down with the economy. We often only know a few months out what our advertising revenue will be, which makes it hard to plan ahead.

Second, we’re not in the subscriptions business. Vox is here to help everyone understand the complex issues shaping the world — not just the people who can afford to pay for a subscription. We believe that’s an important part of building a more equal society. We can’t do that if we have a paywall.

That’s why we also turn to you, our readers, to help us keep Vox free. If you also believe that everyone deserves access to trusted high-quality information, will you make a gift to Vox today?

One-Time Monthly Annual

$5/month

$10/month

$25/month

$50/month

Other

$

Yes, I'll give $5/month

Yes, I'll give $5/month

We accept credit card, Apple Pay, and Google Pay. You can also contribute via