RCM Eos PIPE HOLDINGS Acquires 9.99% Stake in Pulmatrix, Inc. via Preferred Stock Investment

On April 16, 2026, RCM Eos PIPE HOLDINGS, LLC, along with Rapha Capital Management, LLC and Kevin Slawin, acquired 1,000 shares of Series B Convertible Preferred Stock of Pulmatrix, Inc. (PULM) for $1,000,000. This investment represents a 9.99% beneficial ownership stake in the company's common stock upon conversion, which is currently limited by a beneficial ownership blocker. The acquisition was made to provide interim financing for Pulmatrix ahead of a planned merger with Eos SENOLYTIX, Inc. Under the terms of the Merger Agreement, Eos stockholders are expected to own approximately 94% of the combined entity post-closing. In connection with the purchase, RCM Eos entered into a Voting Agreement to support the merger and related transactions. Kevin Slawin, who manages Rapha and RCM Eos, is also the CEO and a director of Eos SENOLYTIX. Following the merger, it is anticipated that Eos will replace the Pulmatrix board of directors and the company will pivot to Eos's business operations.