JOHN HANCOCK PREMIUM DIVIDEND FUND NOTICE TO SHAREHOLDERS - SOURCES OF DISTRIBUTION UNDER SECTION 19(a)

John Hancock Premium Dividend Fund (NYSE: PDT) announced today sources of its monthly distribution of $0.0883 per share paid to all shareholders of record as of July 13, 2026, pursuant to the Fund's managed distribution plan.

This notice provides shareholders of the John Hancock Premium Dividend Fund (NYSE: PDT) with important information concerning the distribution declared on July 1, 2026, and payable on July 31, 2026.

Distribution Period: July 2026

Distribution Amount Per Common Share: $0.0883

The following table sets forth the estimated sources of the current distribution, payable July 31, 2026, and the cumulative distributions paid this fiscal year to date from the following sources: net investment income; net realized short term capital gains; net realized long term capital gains; and return of capital or other capital source.

For the period 07/01/2026-07/31/2026

Source | Current Distribution ($) | % Breakdown of the Current Distribution | Total Cumulative Distributions ($) | % Breakdown of the Total Cumulative Distributions

Net Investment Income | 0.0289 | 33% | 0.5361 | 72%

Net Realized Short- Term Capital Gains | 0.0000 | 0% | 0.0241 | 3%

Net Realized Long- Term Capital Gains | 0.0000 | 0% | 0.1755 | 23%

Return of Capital or Other Capital Source | 0.0594 | 67% | 0.0126 | 2%

Total per common share | 0.0883 | 100% | 0.7483 | 100%

Average annual total return (in relation to NAV) for the 5 years ended on June 30, 2026 8.00%

Annualized current distribution rate expressed as a percentage of NAV as of June 30, 2026 7.38%

Cumulative total return (in relation to NAV) for the fiscal year through June 30, 2026 7.94%

Cumulative fiscal year-to-date distribution rate expressed as a percentage of NAV as of June 30, 2026 5.21%

The Fund's current fiscal year began on November 1, 2025 and will end on October 31, 2026.

You should not draw any conclusions about the Fund's investment performance from the amount of this distribution or from the terms of the Fund's managed distribution plan.

The Fund estimates that it has distributed more than its income and net realized capital gains; therefore, a portion of your distribution may be a return of capital.

A return of capital may occur, for example, when some or all of the money that you invested in the Fund is paid back to you. A return of capital distribution does not necessarily reflect the Fund's investment performance and should not be confused with "yield" or "income."

The amounts and sources of distributions reported in this Notice are only estimates and are not being provided for tax reporting purposes. The actual amounts and sources of the amounts for tax reporting purposes will depend upon the Fund's investment experience during the remainder of its fiscal year and may be subject to changes based on tax regulations.

The Fund will send you a Form 1099-DIV for the calendar year that will tell you how to report these distributions for federal income tax purposes.

The Fund has declared the July 2026 distribution pursuant to the Fund's managed distribution plan (the "Plan"). Under the Plan, the Fund makes fixed monthly distributions in the amount of $0.0883 per share, which will continue to be paid monthly until further notice.