High Potential child star Matthew Lamb, 14, reveals his mother has died: 'It still doesn't feel real'

Child star Matthew Lamb, who plays the son of Kaitlin Olson's character on High Potential, announced Tuesday that his mother Meredith Lamb has died.

The 14-year-old shared that he lost Meredith last weekend, in a devastated Instagram post where he refraining from disclosing the cause.

'I’m not quite sure how to write this. As I’m sure many of you know, my mama passed away this Saturday,' Matthew wrote alongside a suite of images of Meredith.

'She was everything to me. She taught me school, she taught me empathy, she did everything for our family. She always had the biggest smile and she gave the best hugs. Truly the most selfless person I know.'

Her death 'still doesn’t feel real,' he confessed, reflecting: 'I’m not sure it ever will. She loved and supported everyone authentically. I’m not sure how we’re going to get through this, but we’re going to try.'

Matthew shatteringly continued: 'Every day I’m going to miss telling her about my day, and talking to her and watching our favorite shows.'

The Iowa-born actor concluded: 'This isn’t something I ever thought I would have to do. There’s so much she is going to miss in my life, but I’m grateful for the things she was able to experience. I love you, Mama.'

In the album accompanying his message, Matthew included family photos containing not just his mother but also his sisters and their father Greg.

A representative for Matthew declined the Daily Mail's request for further comment.

Meredith served as a parent liaison for the Broadway Artists Alliance (BAA), which paid tribute to her memory while announcing the 'devastating news' of her death.

'She was the biggest champion for every student, staff member, and parent, and quickly became the glue that held our family together,' their statement said.

'No matter how long you had known Meredith - years, hours, or mere minutes - she took the time to listen, encourage, and lift you up,' the BAA continued.

'You were genuinely special to her from the moment you met her… and we know how incredibly special she became to all of you, too.'

Citing Meredith's faith in the 'the power of the arts and the dreams of young performers,' the BAA announced plans to offer 'scholarships in her name to help young artists pursue their dreams,' in honor of her 'extraordinary legacy.' 

Matthew has been a principal cast member on High Potential since the acclaimed crime comedy began airing on ABC in September 2024.

Based on the Franco-Belgian sitcom HPI, the show stars Olson as a Morgan Gillory, a police department cleaning lady whose 160 IQ renders her an ace at solving cases, resulting in her promotion to the role of civilian consultant.

Matthew and Amirah J play Morgan's two older children, and the character also has an infant daughter by her ex-boyfriend Ludo, who is played by Taran Killam.

The cast of the show includes Daniel Sunjata, Javicia Leslie and Deniz Akdeniz, as well as Shameless and Reba alumnus Steve Howey.

Along with High Potential, Matthew has also featured on such series as Only Murders in the Building and Firebuds and movies like The Best Christmas Pageant Ever.