Important information regarding your distributions

We are providing shareholders of the John Hancock Preferred Income Fund with information concerning the portion of the distributions made for February 29, 2024, that was from a source other than net investment company book income. No action is required on your part.

The amounts and sources of distributions reported in this notice are estimates, are not being provided for tax reporting purposes and may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. The actual amounts and sources for tax reporting purposes will depend upon the Fund’s investment experience during the remainder of the 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.

Payable Date:	Ticker #		Fund Name			CUSIP
February 29, 2024	HPI		John Hancock Preferred Income			41013W108
			Fund
					For the fiscal year-to-date period
		For the period 02/01/2024-02/29/2024			08/01/2023-02/29/20243
						% Breakdown
				% Breakdown		of the Total
		Current		of the Current	Total Cumulative	Cumulative
Source		Distribution ($)		Distribution	Distributions ($)	Distributions
Estimated Net
Investment Income (1)		0.1231		99.70%	0.6472	75%
Estimated Return of
Capital (1), (2)		0.0004		0.30%	0.2160	25%
Total per common share		0.1235		100%	0.8632	100%

(1)The amounts and sources of distributions reported above are only estimates on a book basis. These estimates may, and likely will, vary over time based on the investment activities of the Fund and changes in the value of portfolio investments. The sources of distributions may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. Investors should understand that a return of capital is not a distribution from income or gains of a Fund.

(2)On a tax basis, the estimated components of the current distribution and cumulative distribution would include an estimated return of capital of $0.0185 (15%) and $0.1295 (15%), respectively. These amounts are estimates and the actual amounts and sources for tax reporting purposes may change upon final determination of tax characteristics 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.

(3)The Fund’s current fiscal year began on August 1, 2023, and will end on July 31, 2024.

If you have questions or need additional information, please contact your financial professional or call the John Hancock Investment Management Closed-End Fund Information Line at 1-800-843- 0090, Monday through Friday between 8:00 a.m. and 7:00 p.m., Eastern Time.

Important information regarding your distributions

We are providing shareholders of the John Hancock Preferred Income Fund with information concerning the portion of the distributions made for April 30, 2024, that was from a source other than net investment company book income. No action is required on your part.

The amounts and sources of distributions reported in this notice are estimates, are not being provided for tax reporting purposes and may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. The actual amounts and sources for tax reporting purposes will depend upon the Fund’s investment experience during the remainder of the 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.

Payable Date:	Ticker #		Fund Name			CUSIP
April 30, 2024	HPI		John Hancock Preferred Income			41013W108
			Fund
					For the fiscal year-to-date period
		For the period 04/01/2024-04/30/2024			08/01/2023-04/30/20243
						% Breakdown
				% Breakdown		of the Total
		Current		of the Current	Total Cumulative	Cumulative
Source		Distribution ($)		Distribution	Distributions ($)	Distributions
Estimated Net
Investment Income (1)		0.0224		18%	0.7865	71%
Estimated Return of
Capital (1), (2)		0.1011		82%	0.3228	29%
Total per common share		0.1235		100%	1.1093	100%

(1)The amounts and sources of distributions reported above are only estimates on a book basis. These estimates may, and likely will, vary over time based on the investment activities of the Fund and changes in the value of portfolio investments. The sources of distributions may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. Investors should understand that a return of capital is not a distribution from income or gains of a Fund.

(2)On a tax basis, the estimated components of the current distribution and cumulative distribution would include an estimated return of capital of $0.0235 (19%) and $0.2108 (19%), respectively. These amounts are estimates and the actual amounts and sources for tax reporting purposes may change upon final determination of tax characteristics 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.

(3)The Fund’s current fiscal year began on August 1, 2023, and will end on July 31, 2024.

If you have questions or need additional information, please contact your financial professional or call the John Hancock Investment Management Closed-End Fund Information Line at 1-800-843- 0090, Monday through Friday between 8:00 a.m. and 7:00 p.m., Eastern Time.

Important information regarding your distributions

We are providing shareholders of the John Hancock Preferred Income Fund with information concerning the portion of the distributions made for May 31, 2024, that was from a source other than net investment company book income. No action is required on your part.

The amounts and sources of distributions reported in this notice are estimates, are not being provided for tax reporting purposes and may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. The actual amounts and sources for tax reporting purposes will depend upon the Fund’s investment experience during the remainder of the 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.

Payable Date:	Ticker #		Fund Name			CUSIP
May 31, 2024	HPI		John Hancock Preferred Income			41013W108
			Fund
					For the fiscal year-to-date period
		For the period 05/01/2024-05/31/2024			08/01/2023-05/31/20243
						% Breakdown
				% Breakdown		of the Total
		Current		of the Current	Total Cumulative	Cumulative
Source		Distribution ($)		Distribution	Distributions ($)	Distributions
Estimated Net
Investment Income (1)		0.1032		84%	0.8915	72%
Estimated Return of
Capital (1), (2)		0.0203		16%	0.3407	28%
Total per common share		0.1235		100%	1.2322	100%

(1)The amounts and sources of distributions reported above are only estimates on a book basis. These estimates may, and likely will, vary over time based on the investment activities of the Fund and changes in the value of portfolio investments. The sources of distributions may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. Investors should understand that a return of capital is not a distribution from income or gains of a Fund.

(2)On a tax basis, the estimated components of the current distribution and cumulative distribution would include an estimated return of capital of $0.0210 (17%) and $0.2095 (17%), respectively. These amounts are estimates and the actual amounts and sources for tax reporting purposes may change upon final determination of tax characteristics 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.

(3)The Fund’s current fiscal year began on August 1, 2023, and will end on July 31, 2024.

If you have questions or need additional information, please contact your financial professional or call the John Hancock Investment Management Closed-End Fund Information Line at 1-800-843- 0090, Monday through Friday between 8:00 a.m. and 7:00 p.m., Eastern Time.

Important information regarding your distributions

We are providing shareholders of the John Hancock Preferred Income Fund with information concerning the portion of the distributions made for June 28, 2024, that was from a source other than net investment company book income. No action is required on your part.

The amounts and sources of distributions reported in this notice are estimates, are not being provided for tax reporting purposes and may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. The actual amounts and sources for tax reporting purposes will depend upon the Fund’s investment experience during the remainder of the 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.

Payable Date:	Ticker #		Fund Name			CUSIP
June 28, 2024	HPI		John Hancock Preferred Income			41013W108
			Fund
					For the fiscal year-to-date period
		For the period 06/01/2024-06/30/2024			08/01/2023-06/30/20243
						% Breakdown
				% Breakdown		of the Total
		Current		of the Current	Total Cumulative	Cumulative
Source		Distribution ($)		Distribution	Distributions ($)	Distributions
Estimated Net
Investment Income (1)		0.1178		95%	1.0071	74%
Estimated Return of
Capital (1), (2)		0.0057		5%	0.3480	26%
Total per common share		0.1235		100%	1.3551	100%

(1)The amounts and sources of distributions reported above are only estimates on a book basis. These estimates may, and likely will, vary over time based on the investment activities of the Fund and changes in the value of portfolio investments. The sources of distributions may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. Investors should understand that a return of capital is not a distribution from income or gains of a Fund.

(2)On a tax basis, the estimated components of the current distribution and cumulative distribution would include an estimated return of capital of $0.0185 (15%) and $0.2033 (15%), respectively. These amounts are estimates and the actual amounts and sources for tax reporting purposes may change upon final determination of tax characteristics 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.

(3)The Fund’s current fiscal year began on August 1, 2023, and will end on July 31, 2024.

If you have questions or need additional information, please contact your financial professional or call the John Hancock Investment Management Closed-End Fund Information Line at 1-800-843- 0090, Monday through Friday between 8:00 a.m. and 7:00 p.m., Eastern Time.

Important information regarding your distributions

We are providing shareholders of the John Hancock Preferred Income Fund with information concerning the portion of the distributions made for July 31, 2024, that was from a source other than net investment company book income. No action is required on your part.

The amounts and sources of distributions reported in this notice are estimates, are not being provided for tax reporting purposes and may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. The actual amounts and sources for tax reporting purposes will depend upon the Fund’s investment experience during the remainder of the 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.

Payable Date:	Ticker #		Fund Name			CUSIP
July 31, 2024	HPI		John Hancock Preferred Income			41013W108
			Fund
					For the fiscal year-to-date period
		For the period 07/01/2024-07/31/2024			08/01/2023-07/31/20243
						% Breakdown
				% Breakdown		of the Total
		Current		of the Current	Total Cumulative	Cumulative
Source		Distribution ($)		Distribution	Distributions ($)	Distributions
Estimated Net
Investment Income (1)		0.0338		27%	1.0374	70%
Estimated Return of
Capital (1), (2)		0.0897		73%	0.4406	30%
Total per common share		0.1235		100%	1.4780	100%

(1)The amounts and sources of distributions reported above are only estimates on a book basis. These estimates may, and likely will, vary over time based on the investment activities of the Fund and changes in the value of portfolio investments. The sources of distributions may later be determined to be from taxable net investment income, short-term gains, long-term gains (to the extent permitted by law), and return of capital. Investors should understand that a return of capital is not a distribution from income or gains of a Fund.

(2)On a tax basis, the estimated components of the current distribution and cumulative distribution would include an estimated return of capital of $0.0235 (19%) and $0.2808 (19%), respectively. These amounts are estimates and the actual amounts and sources for tax reporting purposes may change upon final determination of tax characteristics 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.

(3)The Fund’s current fiscal year began on August 1, 2023, and will end on July 31, 2024.

If you have questions or need additional information, please contact your financial professional or call the John Hancock Investment Management Closed-End Fund Information Line at 1-800-843- 0090, Monday through Friday between 8:00 a.m. and 7:00 p.m., Eastern Time.