Butterfly Network is trading 4.4% down at $6.70, facing profit-taking pressure after a multi-day rally linked to its AI-ultrasound partnership with Midjourney Medical. - A director, Dr. Rothberg, sold $29.4 million in company shares over three days in mid-July, contributing to recent selling pressure. - The stock continues to cool following significant gains driven by enthusiasm for the company's Ultrasound-on-Chip technology.