The CEO of Rewind AI publicly shared his performance reviews. Some criticized his communication while others praised his leadership.

• The CEO of Rewind AI made his own 360-degree performance reviews public to be transparent. 
• Dan Siroker, who previously founded A/B testing firm Optimizely, said some of the feedback was "brutal."
• Some criticized his communication style while others praised his resourcefulness and leadership.

The CEO of Andreessen Horowitz-backed startup Rewind AI has taken the unusual step of publicly sharing his own performance reviews in an effort to demonstrate the level of transparency at his company.

Dan Siroker, who previously founded A/B testing company Optimizely, posted his last five 360 reviews, which include feedback from colleagues, in a tweet on Thursday. Siroker described some of his qualitative feedback as "brutal."