Los Angeles
The 42-year-old actor took to Instagram to share the news on Sunday.
"Four years sober sun-kissed selfie. Grateful for today!" Quinto captioned his picture.
The actor is best known for playing the role of Spock in the reboot "Star Trek" film (2009) and its sequels.
He was also nominated for a best supporting actor Emmy for his performance in "American Horror Story: Asylum" in 2013.
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