Techcrunch:

After years of user-growth struggles, Twitter just announced that its CEO Dick Costolo has chosen to step down July 1, though he’ll remain on the board. Twitter co-founder and Square CEO Jack Dorsey will be the interim CEO.

Dorsey will continue to be Square’s CEO, but will fill in for Costolo until Twitter finds a replacement. Dorsey was previously Twitter’s CEO before being forced out and replaced by co-founder Ev Williams in 2008. Dorsey became Twitter’s executive chairman in 2011 when Costolo became CEO.

Chaos is never good for a publicly traded company and Twitter has certainly had many ups and downs during Costolo’s tenure. Many hope the next CEO, who ever he or she may be, will finally give the company a direction both users and Wall St can look forward to.