John Hancock Premium Dividend Fund announced sources of its monthly distribution of $0.0975 per share paid to all shareholders of record as of October 12, 2021, pursuant to the Fund's managed distribution plan. This notice provides shareholders of the John Hancock Premium Dividend Fund with important information concerning the distribution declared on October 1, 2021, and payable on October 29, 2021. The Fund has declared the October 2021 distribution pursuant to the Fund's managed distribution plan. Under the Plan, the Fund makes fixed monthly distributions in the amount of $0.0975 per share, which will continue to be paid monthly until further notice.