This milestone marks Kieran's first-ever Lead Actor Emmy win and nomination for his portrayal of the youngest Roy brother. He previously received nods in the Outstanding Supporting Actor category at the 2020 Emmys and 2022 Emmys.

"I gotta thank Jesse Armstrong for being a brilliant writer, showrunner and gentleman," Kieran said during his acceptance speech at the award show, which was delayed due to the Hollywood strikes. "Thank you for Succession, thank you for everything."

The 41-year-old went on to thank his mom Patricia Brentrup "for giving me life and my childhood, which was great," as well as his manager Emily Gerson Saines for sticking by his side.

Kieran concluded with a message to his "beautiful wife" Jazz Charton.

"Thank you for sharing your life with me and giving me two amazing kids," he told his partner, who was seated in the audience. "Kinsey Sioux and Wilder Wolf, I love you so many and so much."

"And Jazz, I want more," he said as both Jazz and the crowd laughed. "You said 'maybe,' if I win. I love you so much. Thank you."

To see the complete list of Emmy winners, keep reading...

Andor
Better Call Saul
The Crown
The Last of Us
WINNER: Succession
The White Lotus
Yellowjackets

Bella Ramsey, The Last of Us
Elisabeth Moss, The Handmaid's Tale
Keri Russell, The Diplomat
Melanie Lynskey, Yellowjackets
WINNER: Sarah Snook, Succession
Sharon Horgan, Bad Sisters

Bob Odenkirk, Better Call Saul
Brian Cox, Succession
Jeff Bridges, The Old Man
Jeremy Strong, Succession
WINNER: Kieran Culkin, Succession
Pedro Pascal, The Last of Us

Aubrey Plaza, The White Lotus
Elizabeth Debicki, The Crown
J. Smith-Cameron, Succession
WINNER: Jennifer Coolidge, The White Lotus
Meghann Fahy, The White Lotus
Rhea Seehorn, Better Call Saul
Sabrina Impacciatore, The White Lotus
Simona Tabasco, The White Lotus

Alan Ruck, Succession
Aleksander Skarsgård, Succession
F. Murray Abraham, The White Lotus
WINNER: Matthew Macfadyen, Succession
Michael Imperioli, The White Lotus
Nicholas Braun, Succession
Theo James, The White Lotus
Will Sharpe, The White Lotus

Abbot Elementary
Barry
Jury Duty
Only Murders in the Building
Ted Lasso
WINNER: The Bear
The Marvelous Mrs. Maisel
Wednesday

Christina Applegate, Dead to Me
Jenna Ortega, Wednesday
Natasha Lyonne, Poker Face
WINNER: Quinta Brunson, Abbott Elementary
Rachel Brosnahan, The Marvelous Mrs. Maisel

Bill Hader, Barry
Jason Segel, Shrinking
Jason Sudeikis, Ted Lasso
WINNER: Jeremy Allen White, The Bear
Martin Short, Only Murders in the Building

Alex Borstein, The Marvelous Mrs. Maisel
WINNER: Ayo Edebiri, The Bear
Hannah Waddingham, Ted Lasso
Janelle James, Abbott Elementary
Jessica Williams, Shrinking
Juno Temple, Ted Lasso
Sheryl Lee Ralph, Abbott Elementary

Anthony Carrigan, Barry
Brett Goldstein, Ted Lasso
WINNER: Ebon Moss-Bachrach, The Bear
Henry Winkler, Barry
James Marsden, Jury Duty
Phil Dunster, Ted Lasso
Tyler James Williams, Abbott Elementary

WINNER: Beef
Dahmer — Monster: The Jeffrey Dahmer Story
Daisy Jones & the Six
Fleishman is in Trouble
Obi-Wan Kenobi

WINNER: Ali Wong, Beef
Dominique Fishback, Swarm
Jessica Chastain, George & Tammy
Kathryn Hahn, Tiny Beautiful Things
Lizzy Caplan, Fleishman Is In Trouble
Riley Keough, Daisy Jones & the Six

Daniel Radcliffe, Weird: The Al Yankovic Story
Evan Peters, Dahmer — Monster: The Jeffrey Dahmer Story
Kumail Nanjiani, Welcome to Chippendales
Michael Shannon, George & Tammy
WINNER: Steven Yeun, Beef
Taron Egerton, Black Bird

Annaleigh Ashford, Welcome to Chippendales
Camila Morrone, Daisy Jones & The Six
Claire Danes, Fleishman Is In Trouble
Juliette Lewis, Welcome to Chippendales
Maria Bello, Beef
Merritt Wever, Tiny Beautiful Things
WINNER: Niecy Nash-Betts, Dahmer — Monster: The Jeffrey Dahmer Story

Jesse Plemons, Love & Death
Joseph Lee, Beef
Murray Bartlett, Welcome to Chippendales
WINNER: Paul Walter Hauser, Black Bird
Ray Liotta, Black Bird
Richard Jenkins, Dahmer — Monster: The Jeffrey Dahmer Story
Young Mazino, Beef

WINNER: The Daily Show
Jimmy Kimmel Live
Late Night With Seth Meyers
The Late Show With Stephen Colbert
The Problem With Jon Stewart

The Amazing Race
WINNER: RuPaul's Drag Race
Suvivor
Top Chef
The Voice