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DOMINI INVESTMENT TRUST

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Supplement dated May 1, 2017, to the

Prospectus and Statement of Additional Information

dated November 30, 2016, regarding the

DOMINI IMPACT EQUITY FUND^SM

INVESTOR SHARES (DSEFX), CLASS A SHARES (DSEPX), CLASS R SHARES (DSFRX) AND INSTITUTIONAL SHARES (DIEQX)

DOMINI IMPACT INTERNATIONAL EQUITY FUND^SM

INVESTOR SHARES (DOMIX), CLASS A SHARES (DOMAX) AND INSTITUTIONAL SHARES (DOMOX)

DOMINI IMPACT BOND FUND^SM

INVESTOR SHARES (DSBFX) AND INSTITUTIONAL SHARES (DSBIX)

(each a “Fund” and collectively the “Funds”)

NEW MANAGEMENT FEE SCHEDULE APPROVED

The Board of Trustees of the Domini Investment Trust (the “Board”) has approved new management and submanagement agreements with Domini Impact Investments LLC and Wellington Management Company LLP (“Wellington Management”), respectively. As a consequence of the new agreements there will be a reduction in each Fund’s aggregate management fees.

Effective May 1, 2017:

1.	Domini Impact Equity Fund

a.

In the section titled “Fees and expenses of the Fund” on page 2 of the prospectus, the table entitled “Annual Fund operating expenses” is deleted in its entirety and replaced with the following:


Annual Fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Share classes	Investor			Class A			Institutional			Class R
Management fees¹		0.24	%		0.24	%		0.24	%		0.24	%
Distribution (12b-1) fees		0.25	%		0.25	%		None			None
Other expenses
Sponsorship fee		0.45	%		0.45	%		0.45	%		0.45	%
Other miscellaneous expenses		0.14	%		0.41	%		0.06	%		0.07	%
Total other expenses		0.59	%		0.86	%		0.51	%		0.52	%
Total annual Fund operating expenses¹		1.08	%		1.35	%		0.75	%		0.76	%
Fee waiver and expense reimbursements²		0.00	%		-0.23	%		-0.01	%		0.00	%
Total annual Fund operating expenses after fee waiver and expense reimbursements¹		1.08	%		1.12	%		0.74	%		0.76	%

¹	Restated to reflect current fees.

²

The Fund’s adviser has contractually agreed to waive certain fees and/or reimburse certain ordinary operating expenses in order to limit Investor, Class A, Institutional, and Class R share expenses to 1.25%, 1.18%, 0.80%, and 0.90%, respectively. The agreement expires on November 30, 2017, absent an earlier modification by the Fund’s Board.

b.

In the section titled “Example” on page 3 of the prospectus, the table entitled “Share classes” is deleted in its entirety and replaced with the following:


Share classes (whether or not shares are redeemed)	1 Year		3 Years		5 Years		10 Years
Investor	$	110	$	343	$	595	$	1,317
Class A	$	584	$	861	$	1,158	$	2,003
Institutional	$	76	$	239	$	416	$	929
Class R	$	78	$	243	$	422	$	942

2.	Domini Impact International Equity Fund

a.

In the section titled “Fees and expenses of the Fund” on page 9 of the prospectus, the table entitled “Annual Fund operating expenses” is deleted in its entirety and replaced with the following:


Annual Fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Share classes	Investor			Class A			Institutional
Management fees¹		0.94	%		0.94	%		0.94	%
Distribution (12b-1) fees		0.25	%		0.25	%		None
Other expenses		0.27	%		0.34	%		0.10	%
Total annual Fund operating expenses¹		1.46	%		1.53	%		1.04	%
Fee waiver and expense reimbursements²		0.00	%		-0.06	%		0.00	%
Total annual Fund operating expenses after fee waiver and expense reimbursements¹		1.46	%		1.47	%		1.04	%

¹	Restated to reflect current fees.

²

The Fund’s adviser has contractually agreed to waive certain fees and/or reimburse certain ordinary operating expenses in order to limit Investor, Class A, and Institutional share expenses to 1.60%, 1.57%, and 1.27%, respectively. The agreement expires on November 30, 2017, absent an earlier modification by the Fund’s Board.

b.

In the section titled “Example” on page 10 of the prospectus, the table entitled “Share classes” is deleted in its entirety and replaced with the following:


Share classes (whether or not shares are redeemed)	1 Year		3 Years		5 Years		10 Years
Investor	$	149	$	462	$	797	$	1,746
Class A	$	617	$	930	$	1,264	$	2,207
Institutional	$	106	$	331	$	574	$	1,271

3.	Domini Impact Bond Fund

a.

In the section titled “Fees and expenses of the Fund” on page 16 of the prospectus, the table entitled “Annual Fund operating expenses” is deleted in its entirety and replaced with the following:


Annual Fund operating expenses (expenses that you pay each year as a percentage of the value of your investment)
Share classes	Investor			Institutional
Management fees¹		0.32	%		0.32	%
Distribution (12b-1) fees		0.25	%		None
Other expenses
Administrative services fee		0.25	%		0.25	%
Other miscellaneous expenses		0.29	%		0.57	%
Total other expenses		0.54	%		0.82	%
Total annual Fund operating expenses¹		1.11	%		1.14	%
Fee waivers and expense reimbursements ²		-0.26	%		-0.59	%
Total annual Fund operating expenses after fee waivers and expense reimbursements¹		0.85	%		0.55	%

¹	Restated to reflect current fees.

²

The Fund’s adviser has contractually agreed to waive certain fees and/or reimburse certain ordinary operating expenses in order to limit Investor and Institutional share expenses to 0.95% and 0.65%, respectively. The agreement expires on November 30, 2017, absent an earlier modification by the Fund’s Board.

b.

In the section titled “Example” on page 16 of the prospectus, the table entitled “Share classes” is deleted in its entirety and replaced with the following:


Share classes (whether or not shares are redeemed)	1 Year		3 Years		5 Years		10 Years
Investor	$	87	$	327	$	586	$	1,328
Institutional	$	56	$	304	$	571	$	1,333