Net Power INC Schedule 13D activist filings

8 Rivers Capital and associated entities have disclosed the sale of 1,289,780 shares of NET Power Inc. Class A common stock.

An insider group, including 8 Rivers Capital and NPEH, LLC, has reduced its beneficial ownership in NET Power Inc. to 21.01% after selling 1,295,220 Class A Common Stock shares.

NPEH, a significant holder in NET Power Inc., reported the sale of 1,288,653 Class A Common Stock shares between November 17 and December 9, 2025, reducing its beneficial ownership to 22.25%.

Damian Beauchamp acquired interests in 8RCH, LLC from Cynda Beauchamp, leading to a change in beneficial ownership reporting for NET Power Inc.

NPEH, an entity associated with 8 Rivers Capital, has sold over 2 million shares of NET Power Inc. Class A Common Stock after converting Opco Units, reducing its beneficial ownership percentage.

SK Inc. has divested its interests in three entities holding stakes in NET Power Inc., leading to a new beneficial ownership structure primarily involving Damian and Cynda Beauchamp and 8RCH, LLC, who now collectively control 25.6% of the Class A Common Stock.

A key reporting entity, Tillandsia, Inc., has sold 2.5 million shares of Class A Common Stock in NET Power Inc. through a block trade, reducing its beneficial ownership.