ATRA ATARA BIOTHERAPEUTICS INC Capital Structure Changes 8-K Filing 2024 - Board Appointment Atara Biotherapeutics appointed Gregory A. Ciongoli to its Board of Directors and announced a registered direct offering of 758,900 shares and pre-funded warrants, expecting to raise approximately $36 million for working capital.Get access to all SEC 8-K filings of the ATARA BIOTHERAPEUTICS INC