Via the Washington Free Beacon:

ABC News chief anchor George Stephanopoulos donated $50,000 to the Clinton Foundation in recent years, records show.
Stephanopoulos, a former aide to President Bill Clinton, confirmed the donation to POLITICO’s Dylan Byers after the Free Beacon contacted ABC News for comment. The host acknowledged making two donations of $25,000 between 2013 and 2014. Stephanopoulos issued a statement apologizing for failing to disclose the donation.
“I made charitable donations to the Foundation in support of the work they’re doing on global AIDS prevention and deforestation, causes I care about deeply,” Stephanopoulos said. “I thought that my contributions were a matter of public record. However, in hindsight, I should have taken the extra step of personally disclosing my donations to my employer and to the viewers on air during the recent news stories about the Foundation. I apologize.”

ABC News says it will “stand behind” Stephanopoulos: “He’s admitted to an honest mistake and apologized for that omission.”

Keep in mind, this is the same George Stephanopoulos who conducted this less-than-friendly interview with Clinton Cash author Peter Schweizer on April 26:

Not only did Stephanopoulos aggressively question Schweizer’s motives for penning the book —

As you know [said Stephanopoulos], the Democrats have said this is an indication of your partisan interest. They say you used to work for President [George W.] Bush as a speechwriter. You’re funded by the Koch brothers. How do you respond to that?

—​ he vigorously challenged Schweizer’s conclusions:

As you know, the Clinton campaign says you haven’t produced a shred of evidence that there was any official action as secretary that supported the interests of donors. We’ve done investigative work here at ABC News, found no proof of any kind of direct action. And an independent government ethics expert, Bill Allison, of the Sunlight Foundation, wrote this. He said, “There’s no smoking gun, no evidence that she changed the policy based on donations to the foundation.” No smoking gun.

So while grilling Schweizer on his motives for investigating donations to the Clinton Foundation, Stephanopoulos concealed his own financial contributions to the very same foundation.

An “honest mistake”?