Trade Summary

10 months ago, Heiden William K, serving as Dir at Macrogenics Inc (MGNX), purchased 100,000 shares at $1.51 per share, for a total transaction value of $150,515.00. Following this transaction, Heiden William K now holds 111,000 shares of MGNX.

This purchase represents a 909.00% increase in Heiden William K's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Tuesday, August 19, 2025 and publicly disclosed via SEC Form 4 filing on Thursday, August 21, 2025 at 12:19 PM ET, 2 days after the trade was made.

Macrogenics Inc operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider buying activity in this sector can provide valuable signals about industry trends and company-specific developments.