French pharmaceutical and health-care company Sanofi posted a fourth-quarter loss on Thursday, despite higher net sales and compared to the prior year’s profit. Further, the board proposed annual dividend of €3.76 ($4.05) per share, an increase of 5.6%. Looking ahead for fiscal 2024, Sanofi expects business earnings per share to remain roughly stable excluding the impact of an expected effective tax rate increase to 21%, and decrease low single-digit at constant exchange rates (CER) including the higher expected tax rate. Separately, the company announced the appointment of François-Xavier Rog…