Forms of cerdulatinib and salts or co-crystals thereof were prepared and characterized in the solid state. Also provided are processes of manufacture and methods of using the forms cerdulatinib and salts or co-crystals thereof.本發明係關於製備賽度替尼(cerdulatinib)及其鹽或共結晶體之型式且以固態表徵。亦提供製造該等型式賽度替尼及其鹽或共結晶體之方法及其使用方法。