Robert De Niro Speaks Out About 'Difficult' Split from Wife of 21 Years Grace Hightower

Robert De Niro is speaking out about his split from wife of more than 20 years Grace Hightower.

The Oscar-winning actor, 75, tells PEOPLE in a statement that this is a “difficult” time but that they remain committed to co-parenting their two children.

“Grace and I have two beautiful children together. We are entering a period of transition in our relationship which is a difficult but constructive process,” he said.

De Niro added, “I honor Grace as a wonderful mother and ask for privacy and respect from all as we proceed to develop our roles as partners in parenting.”

The Wizard of Lies actor married Hightower, 63, in 1997 after dating for a decade. They have a 20-year-old son Elliott and 6-year-old daughter Helen Grace. News of the split surfaced earlier this month.

De Niro also has four other children: daughter Drena, 47, and son Raphael, 42 with former wife Diahnne Abbott, as well as 23-year-old twin sons Julian and Aaron, with ex-girlfriend Toukie Smith.

Robert De Niro and Grace Hightower
Robert De Niro and Grace Hightower

This isn’t the first time the two have separated. De Niro filed for divorce in 1999 and engaged into a custody dispute over their son. The pair eventually smoothed things over and the divorce was never finalized.

In November 2004, the two renewed their vows in front of an A-list crowd such as Martin Scorsese, Meryl Streep, Ben Stiller, Tom Brokaw and others.

RELATED: Robert De Niro Splits from Wife of More Than 20 Years

At the time, the Raging Bull actor jokingly referred to their previous marital problems saying he wanted to “make sure this one sticks.”

The two were last seen on the red carpet in June when they attended the 72nd Annual Tony Awards in New York City. While De Niro has kept his private life out of the spotlight he did show his softer side while speaking about his family.

There are great moments and moments of sadness,” he previously told PEOPLE of raising his kids. “Sometimes you’re the last person they want to deal with. It’s like when you walk your kids to school and they get older and they don’t want to hold your hand or kiss you goodbye.”