Michelle Williams Quietly Welcomes Baby No. 4, Her Third Child with Husband Thomas Kail

Michelle Williams has quietly expanded her family once again. The acclaimed actress, 44, recently welcomed her fourth child—her third with director husband Thomas Kail—via surrogate, a source confirms to PEOPLE. The new addition arrived about six weeks ago, and the now family of six has been spotted enjoying strolls in their New York City neighborhood.

“They couldn’t be happier to expand their family, and Matilda has been doting on her younger siblings,” the insider shared.

While Williams’ rep has not issued an official comment, the Fabelmans star has made no secret in the past of how deeply motherhood grounds and inspires her. The new baby joins the couple’s son Hart, 4, and another child born in 2022, as well as Williams’ oldest daughter, 18-year-old Matilda, whom she shares with the late Heath Ledger.

Williams and Kail, who met while working on the FX series Fosse/Verdon, married in 2020 and have largely kept their family life out of the public eye. However, sources close to the couple say their bond has only deepened as their household has grown.

The arrival of baby No. 4 comes as Williams prepares to shift gears professionally. After taking a brief hiatus following the success of The Fabelmans—which earned her widespread critical acclaim—she’s returning to screens in a completely new light. Williams stars in Dying for Sex, a darkly comedic limited series set to premiere on Hulu this Friday, April 4. Early reviews are already praising her sharp, fearless performance.

In a 2023 interview with Entertainment Weekly, Williams reflected on juggling motherhood and a demanding film career, admitting it’s a balancing act she’s still learning to master.

“My heart obviously belongs to my children; they tug at it the most,” she said at the time. “But I really want to be able to have both. And I think that it requires deep thought and learning and the support of other women to figure out how to get through it.”

Now, with four children and a flourishing career, Williams is doing just that—navigating motherhood and creative ambition with quiet strength and grace.