Trade Summary

6 months ago, Catalyst4, Inc., serving as 10% owner at Maplight Therapeutics, Inc. (MLPT), purchased 5,441,176 shares at $17.00 per share, for a total transaction value of $92,499,992.00. Following this transaction, Catalyst4, Inc. now holds 19,697,464 shares of MLPT.

This purchase represents a 38.00% increase in Catalyst4, Inc.'s stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Tuesday, October 28, 2025 and publicly disclosed via SEC Form 4 filing on Wednesday, October 29, 2025 at 12:16 PM ET, 1 day after the trade was made.