UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED

MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number: 811-04323

Natixis Funds Trust I

(Exact name of Registrant as specified in charter)

888 Boylston Street, Suite 800, Boston, Massachusetts 02199-8197

(Address of principal executive offices) (Zip code)

Susan McWhan Tobin, Esq.

Natixis Distribution, LLC

888 Boylston Street, Suite 800

Boston, Massachusetts 02199-8197

(Name and address of agent for service)

Registrant’s telephone number, including area code: (617) 449-2139

Date of fiscal year end: December 31

Date of reporting period: December 31, 2024

Explanatory Note:

The Registrant is filing this amendment to its Form N-CSR filing for the period ended December 31, 2024 (“Amendment”), originally filed with the Securities and Exchange Commission on March 5, 2025 (SEC Accession No. 0001193125-25-047326) (the “Original N-CSR Filing”). The sole purpose of this Amendment is, with respect to each class of shares of each of Mirova Global Green Bond Fund, Mirova Global Megatrends Fund (formerly Mirova Global Sustainable Equity Fund) and Natixis Oakmark International Fund (each, a “Fund” and together the “Funds”), to revise the average annual total returns for the Fund’s respective benchmark(s) provided in the “Fund Performance” section, under Item 1 of the Original N-CSR Filing.

In connection with the Amendment, the Registrant is filing as exhibits to this Amendment updated certifications pursuant to Sections 302 and 906 of the Sarbanes-Oxley Act of 2002.

Except as set forth above, this Amendment does not amend, update or modify any other items or disclosures found in the Original N-CSR Filing.

Item 1. Reports to Stockholders.

(a)	The Registrant’s Tailored Shareholder Reports transmitted to shareholders pursuant to Rule 30e-1 under the Investment Company Act of 1940 is as follows:

Class A

MGGAX

Mirova Global Green Bond Fund

Annual Shareholder Report - December 31, 2024

This annual shareholder report contains important information about Mirova Global Green Bond Fund for the period of January 1, 2024 to December 31, 2024. You can find additional information (including tax information) about the Fund at im.natixis.com/funddocuments. You can also request the information by contacting us at (800) 225-5478 or by contacting your financial intermediary directly.

What were the fund costs for the last year? (based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment^{Footnote Reference†}
Class A	$91	0.90%

Footnote	Description
Footnote^†	Annualized for periods less than one year (if applicable).

How did the fund perform last year and what affected its performance?

Explanation of Fund Performance

In 2024, the Mirova Global Green Bond Fund lagged in overall performance which can be attributed to movements on the yield curve.

Top Contributors to Performance

•Allocation had a positive impact on the Fund during the year due to its long position on credit, while US and Euro credit spreads compressed.

•Issue selection during the year was also positive. The largest contributors to this outperformance were among the corporate holdings, namely Altarea, Johnson Controls, and EIB.

Top Detractors from Performance

•The Fund's duration and curve strategy during the year incurred a cost, negatively impacting performance.

•Yield curve positioning on the CAD zone, Euro zone and USD zone were negative throughout the year.

•Among the worst detractors were Philips, Vestas, and Credit Mutuelle Arkea.

Fund Performance

The Fund’s benchmarks are unmanaged indices used as a general measure of market performance. Calculations assume dividends and capital gains are reinvested. The tables do not reflect taxes shareholders might owe on any fund distributions or when they redeem their shares. You cannot invest directly in an index.

Total Return Based on a Hypothetical $10,000 Investment

	Class A with load	Bloomberg Global Aggregate Bond Index - USD Hedged	Bloomberg MSCI Global Green Bond Index - USD Hedged
02/2017	$9,579	$10,000	$10,000
03/2017	$9,502	$9,995	$9,984
04/2017	$9,598	$10,063	$10,076
05/2017	$9,646	$10,122	$10,149
06/2017	$9,607	$10,094	$10,103
07/2017	$9,655	$10,127	$10,153
08/2017	$9,741	$10,219	$10,266
09/2017	$9,689	$10,172	$10,216
10/2017	$9,747	$10,215	$10,295
11/2017	$9,756	$10,231	$10,316
12/2017	$9,719	$10,253	$10,302
01/2018	$9,631	$10,180	$10,217
02/2018	$9,631	$10,157	$10,217
03/2018	$9,701	$10,242	$10,293
04/2018	$9,662	$10,203	$10,271
05/2018	$9,691	$10,242	$10,322
06/2018	$9,713	$10,261	$10,362
07/2018	$9,713	$10,263	$10,368
08/2018	$9,752	$10,295	$10,422
09/2018	$9,697	$10,256	$10,372
10/2018	$9,697	$10,236	$10,372
11/2018	$9,717	$10,286	$10,404
12/2018	$9,781	$10,434	$10,515
01/2019	$9,912	$10,545	$10,648
02/2019	$9,952	$10,557	$10,694
03/2019	$10,156	$10,747	$10,923
04/2019	$10,186	$10,753	$10,961
05/2019	$10,298	$10,908	$11,095
06/2019	$10,517	$11,061	$11,327
07/2019	$10,659	$11,148	$11,494
08/2019	$10,922	$11,400	$11,757
09/2019	$10,814	$11,348	$11,675
10/2019	$10,773	$11,328	$11,613
11/2019	$10,732	$11,315	$11,596
12/2019	$10,676	$11,292	$11,529
01/2020	$10,924	$11,495	$11,801
02/2020	$11,027	$11,636	$11,929
03/2020	$10,434	$11,455	$11,460
04/2020	$10,774	$11,640	$11,743
05/2020	$10,795	$11,673	$11,771
06/2020	$10,969	$11,732	$11,922
07/2020	$11,186	$11,860	$12,093
08/2020	$11,134	$11,774	$12,027
09/2020	$11,216	$11,817	$12,125
10/2020	$11,268	$11,818	$12,192
11/2020	$11,434	$11,885	$12,265
12/2020	$11,489	$11,922	$12,298
01/2021	$11,425	$11,858	$12,244
02/2021	$11,233	$11,673	$12,021
03/2021	$11,267	$11,627	$11,990
04/2021	$11,234	$11,658	$11,967
05/2021	$11,202	$11,684	$11,972
06/2021	$11,261	$11,741	$12,037
07/2021	$11,369	$11,887	$12,248
08/2021	$11,315	$11,863	$12,200
09/2021	$11,230	$11,751	$12,055
10/2021	$11,165	$11,720	$11,991
11/2021	$11,252	$11,804	$12,132
12/2021	$11,142	$11,756	$12,016
01/2022	$10,933	$11,571	$11,806
02/2022	$10,625	$11,417	$11,524
03/2022	$10,473	$11,171	$11,233
04/2022	$10,083	$10,871	$10,828
05/2022	$9,927	$10,856	$10,691
06/2022	$9,548	$10,691	$10,398
07/2022	$9,971	$10,963	$10,872
08/2022	$9,536	$10,677	$10,366
09/2022	$9,101	$10,334	$9,935
10/2022	$9,135	$10,299	$9,925
11/2022	$9,514	$10,562	$10,278
12/2022	$9,277	$10,437	$9,972
01/2023	$9,568	$10,677	$10,263
02/2023	$9,359	$10,507	$10,054
03/2023	$9,498	$10,740	$10,267
04/2023	$9,545	$10,795	$10,312
05/2023	$9,510	$10,753	$10,308
06/2023	$9,475	$10,746	$10,299
07/2023	$9,533	$10,750	$10,341
08/2023	$9,533	$10,736	$10,359
09/2023	$9,359	$10,551	$10,170
10/2023	$9,370	$10,476	$10,171
11/2023	$9,695	$10,836	$10,520
12/2023	$10,064	$11,183	$10,925
01/2024	$9,993	$11,161	$10,887
02/2024	$9,910	$11,084	$10,788
03/2024	$10,028	$11,184	$10,928
04/2024	$9,851	$11,004	$10,770
05/2024	$9,898	$11,101	$10,826
06/2024	$9,969	$11,198	$10,886
07/2024	$10,182	$11,414	$11,123
08/2024	$10,253	$11,539	$11,204
09/2024	$10,372	$11,673	$11,344
10/2024	$10,265	$11,515	$11,249
11/2024	$10,466	$11,652	$11,458
12/2024	$10,323	$11,562	$11,344

Performance data shown represents past performance and is no guarantee of, and is not necessarily indicative of, future results. Total return and value will vary, and you may have a gain or loss when shares are sold. Current performance may be lower or higher than quoted. For the most recent month-end performance, visit im.natixis.com/en-us/products/mutual-funds/price-and-performance.

Average Annual Total Returns (%)

AATR	1 Year	5 Years	Since Inception 2/28/17
Class A at NAV	2.57%	(0.67%)	0.96%
Class A with 4.25% MSC^{Footnote Reference1}	(1.82%)	(1.53%)	0.41%
Bloomberg Global Aggregate Bond Index - USD Hedged	3.40%	0.48%	1.86%
Bloomberg MSCI Global Green Bond Index - USD Hedged	3.83%	(0.32%)	1.62%

Footnote	Description
Footnote¹	Maximum sales charge

Effective May 1, 2024, in accordance with new regulations, the Fund’s primary broad-based index changed to the Bloomberg Global Aggregate Bond Index - USD Hedged. The Fund will retain the Bloomberg MSCI Global Green Bond Index - USD Hedged as an additional benchmark for performance comparison.

Key Fund Statistics

Total Net Assets	$38,096,678
# of Portfolio Holdings (including overnight repurchase agreements and derivatives)	82
Portfolio Turnover Rate	10%
Total Advisory Fees Paid (after waiver/reimbursement, if applicable)	$17,744

What did the Fund invest in? (% of Net Assets)

Industry Summary

Value	Value
Other investments less than 3% of net assets^{Footnote Reference*}	14.3%
Special Purpose	4.6%
Supra-National	5.0%
Financial	8.1%
Bank	9.0%
Industrial	15.3%
Utility-Electric	15.6%
Government National	28.1%

Footnote	Description
Footnote^*	Net of other assets less liabilities (including futures contracts)

Country Weightings

Value	Value
Other investments less than 3% of net assets^{Footnote Reference*}	22.8%
Denmark	3.0%
Sweden	3.4%
Supranationals	5.0%
France	6.6%
Spain	6.6%
Netherlands	8.0%
United Kingdom	9.4%
Italy	10.4%
United States	11.0%
Germany	13.8%

Credit Quality^{Footnote Reference†}

Value	Value
Cash & equivalents	8.7
Not rated^{Footnote Reference^}	0.8
BB	3.2
BBB	50.6
A	12.0
AA	7.5
AAA	17.2

Footnote	Description
Footnote^†	Credit ratings are by S&P Global Ratings. A credit rating is an assessment provided by a nationally recognized statistical rating organization (NRSRO) of the creditworthiness of an issuer with respect to debt obligations except for those debt obligations that are only privately rated. Ratings are measured on a scale that generally ranges from AAA (highest) to D (lowest). The credit ratings shown relate to the creditworthiness of the issuers of the underlying securities in the Fund, and not to the Fund or its shares. Credit ratings are subject to change.
Footnote^{^}	Not Rated category represents only those securities not rated by S&P Global Ratings. Such securities may be rated by other NRSROs not shown here.

Material Fund Changes

There were no material fund changes during the period.

An image of a QR code that, when scanned, navigates the user to the following URL: https://im.natixis.com/funddocuments

There were no changes in or disagreements with Accountants during the period.

For additional information about the Fund; including its prospectus, financial information, holdings and proxy information, scan the QR code or visit im.natixis.com/funddocuments.

Class A

MGGAX

Mirova Global Green Bond Fund

Annual Shareholder Report

December 31, 2024

TMGG99A-1224

Class N

MGGNX

Mirova Global Green Bond Fund

Annual Shareholder Report - December 31, 2024

What were the fund costs for the last year? (based on a hypothetical $10,000 investment)

Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment^{Footnote Reference†}
Class N	$61	0.60%

Footnote	Description
Footnote^†	Annualized for periods less than one year (if applicable).

How did the fund perform last year and what affected its performance?

Explanation of Fund Performance

In 2024, the Mirova Global Green Bond Fund lagged in overall performance which can be attributed to movements on the yield curve.

Top Contributors to Performance

•Allocation had a positive impact on the Fund during the year due to its long position on credit, while US and Euro credit spreads compressed.

•Issue selection during the year was also positive. The largest contributors to this outperformance were among the corporate holdings, namely Altarea, Johnson Controls, and EIB.

Top Detractors from Performance

•The Fund's duration and curve strategy during the year incurred a cost, negatively impacting performance.

•Yield curve positioning on the CAD zone, Euro zone and USD zone were negative throughout the year.

•Among the worst detractors were Philips, Vestas, and Credit Mutuelle Arkea.

Fund Performance

Total Return Based on a Hypothetical $10,000 Investment

	Class N	Bloomberg Global Aggregate Bond Index - USD Hedged	Bloomberg MSCI Global Green Bond Index - USD Hedged
02/2017	$10,000	$10,000	$10,000
03/2017	$9,930	$9,995	$9,984
04/2017	$10,020	$10,063	$10,076
05/2017	$10,080	$10,122	$10,149
06/2017	$10,050	$10,094	$10,103
07/2017	$10,100	$10,127	$10,153
08/2017	$10,190	$10,219	$10,266
09/2017	$10,131	$10,172	$10,216
10/2017	$10,201	$10,215	$10,295
11/2017	$10,211	$10,231	$10,316
12/2017	$10,177	$10,253	$10,302
01/2018	$10,086	$10,180	$10,217
02/2018	$10,086	$10,157	$10,217
03/2018	$10,165	$10,242	$10,293
04/2018	$10,123	$10,203	$10,271
05/2018	$10,165	$10,242	$10,322
06/2018	$10,184	$10,261	$10,362
07/2018	$10,194	$10,263	$10,368
08/2018	$10,236	$10,295	$10,422
09/2018	$10,176	$10,256	$10,372
10/2018	$10,176	$10,236	$10,372
11/2018	$10,196	$10,286	$10,404
12/2018	$10,272	$10,434	$10,515
01/2019	$10,409	$10,545	$10,648
02/2019	$10,462	$10,557	$10,694
03/2019	$10,672	$10,747	$10,923
04/2019	$10,714	$10,753	$10,961
05/2019	$10,820	$10,908	$11,095
06/2019	$11,059	$11,061	$11,327
07/2019	$11,219	$11,148	$11,494
08/2019	$11,495	$11,400	$11,757
09/2019	$11,385	$11,348	$11,675
10/2019	$11,343	$11,328	$11,613
11/2019	$11,311	$11,315	$11,596
12/2019	$11,249	$11,292	$11,529
01/2020	$11,509	$11,495	$11,801
02/2020	$11,617	$11,636	$11,929
03/2020	$10,991	$11,455	$11,460
04/2020	$11,361	$11,640	$11,743
05/2020	$11,382	$11,673	$11,771
06/2020	$11,562	$11,732	$11,922
07/2020	$11,801	$11,860	$12,093
08/2020	$11,747	$11,774	$12,027
09/2020	$11,840	$11,817	$12,125
10/2020	$11,895	$11,818	$12,192
11/2020	$12,070	$11,885	$12,265
12/2020	$12,137	$11,922	$12,298
01/2021	$12,069	$11,858	$12,244
02/2021	$11,878	$11,673	$12,021
03/2021	$11,910	$11,627	$11,990
04/2021	$11,876	$11,658	$11,967
05/2021	$11,853	$11,684	$11,972
06/2021	$11,913	$11,741	$12,037
07/2021	$12,038	$11,887	$12,248
08/2021	$11,981	$11,863	$12,200
09/2021	$11,889	$11,751	$12,055
10/2021	$11,832	$11,720	$11,991
11/2021	$11,923	$11,804	$12,132
12/2021	$11,805	$11,756	$12,016
01/2022	$11,584	$11,571	$11,806
02/2022	$11,271	$11,417	$11,524
03/2022	$11,107	$11,171	$11,233
04/2022	$10,694	$10,871	$10,828
05/2022	$10,529	$10,856	$10,691
06/2022	$10,128	$10,691	$10,398
07/2022	$10,588	$10,963	$10,872
08/2022	$10,116	$10,677	$10,366
09/2022	$9,668	$10,334	$9,935
10/2022	$9,704	$10,299	$9,925
11/2022	$10,116	$10,562	$10,278
12/2022	$9,867	$10,437	$9,972
01/2023	$10,161	$10,677	$10,263
02/2023	$9,953	$10,507	$10,054
03/2023	$10,100	$10,740	$10,267
04/2023	$10,149	$10,795	$10,312
05/2023	$10,124	$10,753	$10,308
06/2023	$10,087	$10,746	$10,299
07/2023	$10,149	$10,750	$10,341
08/2023	$10,149	$10,736	$10,359
09/2023	$9,977	$10,551	$10,170
10/2023	$9,989	$10,476	$10,171
11/2023	$10,333	$10,836	$10,520
12/2023	$10,728	$11,183	$10,925
01/2024	$10,653	$11,161	$10,887
02/2024	$10,565	$11,084	$10,788
03/2024	$10,691	$11,184	$10,928
04/2024	$10,515	$11,004	$10,770
05/2024	$10,565	$11,101	$10,826
06/2024	$10,653	$11,198	$10,886
07/2024	$10,866	$11,414	$11,123
08/2024	$10,942	$11,539	$11,204
09/2024	$11,080	$11,673	$11,344
10/2024	$10,967	$11,515	$11,249
11/2024	$11,180	$11,652	$11,458
12/2024	$11,034	$11,562	$11,344

Average Annual Total Returns (%)

AATR	1 Year	5 Years	Since Inception 2/28/17
Class N	2.85%	(0.39%)	1.26%
Bloomberg Global Aggregate Bond Index - USD Hedged	3.40%	0.48%	1.86%
Bloomberg MSCI Global Green Bond Index - USD Hedged	3.83%	(0.32%)	1.62%

Key Fund Statistics

Total Net Assets	$38,096,678
# of Portfolio Holdings (including overnight repurchase agreements and derivatives)	82
Portfolio Turnover Rate	10%
Total Advisory Fees Paid (after waiver/reimbursement, if applicable)	$17,744