- Over the course of filming Boyhood (2014), Coltrane grew 27 inches and had 72 haircuts.
- Was primarily homeschooled with the exception of three years of high school. He ultimately received a GED.
- Accepted Variety's Creative Impact in Cinema Award for their part in the film Boyhood at the Texas Film Awards ceremony held on March 12, 2015 in Austin, Texas.
- Son of Bruce Salmon & Genevieve Kinney.
- Coltrane is their middle name.
- Former stepson of Russell Womack.
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