Jennifer Crumbley was found guilty of four counts of manslaughter Tuesday — the first parent in the US to be charged over a mass school shooting committed by their child.

Crumbley, a 45-year-old marketing director, was convicted over her role in the Nov. 30, 2021, mass shooting carried out by her son, Ethan Crumbley, at Oxford High School that left four students dead alongside six others and a teacher wounded.

The 12-person jury, made up of six men and six women, reached its decision in Oxford, Michigan, on Tuesday after 10 hours of weighing the case.

The father of one of the victims of the Oxford High School shooting says the conviction of the shooter’s mother makes him feel like his voice has been heard.

Jennifer Crumbley was found guilty on four counts of manslaughter Tuesday by a Michigan jury that concluded she failed to prevent her son’s actions.

Buck Myre’s son Tate was killed in the November 2021 shooting.

“Today, the people spoke,” Myre said Tuesday on “CUOMO.” “For me as a sportsman and a responsible gun owner — I love to target shoot — I feel like for once my voice is heard in this.”

Jury deliberations went on for 11 hours before Jennifer Crumbley, the mother of the Oxford High School shooter, was found guilty of four counts of involuntary manslaughter. 

Deliberations began Monday after a week-long trial, and the verdict was reached Tuesday afternoon.

Oakland County Judge Cheryl Matthews read instructions to the 17 jurors and then narrowed them down to 12, removing the alternates. The jury is currently made up of 10 women and seven men.