Jillian West / Twitter
Dmitry Medvedev, left, laughs it up with Twitter co-founders Evan Williams, center, and Biz Stone, right. Twitter lost its CTO Friday.
Twitter CTO has sent his last tweet.
Greg Pass stepped down from his position as the company's chief technology officer, according to a tweet sent by Twitter co-founder Biz Stone Friday.
"Twitter acquired Summize three years ago, cofounder @gregpass is moving on—we're lucky to have had him so long!" Stone tweeted.
Pass joined the San Francisco-based micro-blogging site as a vice president of engineering after Twitter bought a company he co-founded that built up Twitter's search functionality.