Thacker And Company has sent letters to shareholders holding physical shares who haven't updated their mandatory KYC details. This includes PAN, address, mobile, email, Demat and bank account details, and nomination status. Shareholders are urged to update these with the Registrar and Transfer Agents promptly. Failure to do so will restrict services, and from April 1, 2024, hinder electronic dividend payments. The company also encourages dematerializing shares for easier transfers and immediate dividend credits, reducing risks associated with physical certificates.