Katherine Mallen Kupferer

Acting

Katherine Mallen Kupferer

Born

2007-11-23 (18)

Place of birth

Chicago, Illinois, USA

Known for

Acting

Credits

7 titles

Born to theatrical parents, Katherine Mallen Kupferer made her professional stage debut in Chicago Shakespeare Theater's acclaimed production of Gypsy and her major motion picture debut in Steve McQueen's Widows. Most recently, she can be seen as Gretchen in Lionsgate's long-anticipated film adaptation of Judy Blume's beloved classic Are You There God, It's Me, Margaret.

Known for

Widows poster
6.5

A police shootout leaves four thieves dead during an explosive armed robbery attempt in Chicago. Their widows have nothing in common except a debt left behind by their spouses' criminal activities. Hoping to forge a future on their own terms, they join forces to pull off a heist.

Widows

2018

Are You There God? It's Me, Margaret. poster
7.1

When her family moves from New York City to New Jersey, an 11-year-old girl navigates new friends, feelings, and the beginning of adolescence.

Are You There God? It's Me, Margaret.

2023

Ghostlight poster
7.2

When melancholic construction worker Dan finds himself drifting from his wife and daughter, he discovers community and purpose in a local theater's production of Romeo and Juliet. As the drama onstage starts to mirror his own life, he and his family are forced to confront a personal loss.

Ghostlight

2024

Mouse poster
NR

Callie and Minnie’s relationship is suddenly upended at the start of the summer before their senior year of high school. Left rudderless without her charismatic best friend, Minnie starts to form a complicated friendship with Callie’s mother.

Mouse

2026

No artwork available
NR

Awkward 14-year-old Maeve and her older sister Reg ache for a way into the glittering world of the Cape Cod waterfront elite, and a secret phone romance with a boy from the local boat club finally makes that dream feel possible. But when the voice on the line begins to reveal something monstrous, Maeve doesn’t hang up, drawing her family deeper into the dark.

The Attentionist

—

They Rescue Horses, Don’t They? poster
NR

In an adult world wrecked by opiate addiction, a high school horse rescuer seeks revenge on the animal who hurt her friend.

They Rescue Horses, Don’t They?

2025

Film credits

Series credits