Exhibit 2 FIRST AMENDMENT TO THE RIGHTS AGREEMENT First Amendment (the "Amendment"), dated as of February 19, 2003, between Enzon Pharmaceuticals, Inc. (formerly, Enzon, Inc.), a Delaware corporation (the "Company"), and Continental Stock Transfer &...Rights Agreement • February 20th, 2003 • Enzon Pharmaceuticals Inc • Biological products, (no disgnostic substances) • Delaware
