0001193125-24-162113.txt : 20240617 0001193125-24-162113.hdr.sgml : 20240617 20240617092854 ACCESSION NUMBER: 0001193125-24-162113 CONFORMED SUBMISSION TYPE: 497 PUBLIC DOCUMENT COUNT: 14 FILED AS OF DATE: 20240617 DATE AS OF CHANGE: 20240617 EFFECTIVENESS DATE: 20240617 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Natixis Funds Trust II CENTRAL INDEX KEY: 0000052136 ORGANIZATION NAME: IRS NUMBER: 041990692 STATE OF INCORPORATION: MA FILING VALUES: FORM TYPE: 497 SEC ACT: 1933 Act SEC FILE NUMBER: 002-11101 FILM NUMBER: 241047128 BUSINESS ADDRESS: STREET 1: 888 BOYLSTON STREET STREET 2: 8TH FLOOR CITY: BOSTON STATE: MA ZIP: 02199 BUSINESS PHONE: 800-283-1155 MAIL ADDRESS: STREET 1: 888 BOYLSTON STREET STREET 2: 8TH FLOOR CITY: BOSTON STATE: MA ZIP: 02199 FORMER COMPANY: FORMER CONFORMED NAME: IXIS Advisor Funds Trust II DATE OF NAME CHANGE: 20050502 FORMER COMPANY: FORMER CONFORMED NAME: CDC NVEST FUNDS TRUST II DATE OF NAME CHANGE: 20010503 FORMER COMPANY: FORMER CONFORMED NAME: NVEST FUNDS TRUST II DATE OF NAME CHANGE: 20000202 0000052136 S000008033 Natixis Oakmark Fund C000021802 Class A NEFOX C000021804 Class C NECOX C000021805 Class Y NEOYX C000188564 Class T NOKTX C000190720 Class N NOANX 0000052136 S000030600 Loomis Sayles Strategic Alpha Fund C000094853 Class A LABAX C000094854 Class C LABCX C000094855 Class Y LASYX C000188568 Class T LSATX C000190722 Class N LASNX 0000052136 S000034097 Loomis Sayles Senior Floating Rate and Fixed Income Fund C000105118 Class A LSFAX C000105119 Class C LSFCX C000105120 Class Y LSFYX C000188118 Class N LSFNX C000188119 Class T LSFTX 497 1 d849238d497.htm NATIXIS FUNDS TRUST I Natixis Funds Trust I

Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated April 1, 2024, as may be revised or supplemented from time to time, for the following fund:
LOOMIS SAYLES SENIOR FLOATING RATE AND FIXED INCOME FUND
(the “Fund”)
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.60     0.60     0.60     0.60     0.60
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses1
     0.32     0.32     0.29     0.32 %2      0.32
Total annual fund operating expenses
     1.17     1.92     0.89     1.17     0.92
Fee waiver and/or expense reimbursement3,4
     0.18     0.18     0.20     0.18     0.18
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     0.99     1.74     0.69     0.99     0.74
 
1 
The expense information shown in the table above includes acquired fund fees and expenses of less than 0.01%; the ratios differ from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses.
2 
Other expenses for Class T shares are estimated for the current fiscal year.
3 
Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
4 
Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for the Class N shares. This undertaking is in effect through March 31, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating

expenses remain the same, except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 447      $ 678      $ 941      $ 1,693  
Class C
   $ 277      $ 572      $ 1,007      $ 2,022  
Class N
   $ 70      $ 248      $ 458      $ 1,063  
Class T
   $ 348      $ 581      $ 847      $ 1,607  
Class Y
   $ 76      $ 261      $ 478      $ 1,102  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 177      $ 572      $ 1,007      $ 2,022  

Supplement dated June 17, 2024 to the Statement of Additional Information, dated April 1, 2024, as may be revised or supplemented from time to time, for the following fund:
LOOMIS SAYLES SENIOR FLOATING RATE AND FIXED INCOME FUND
(the “Fund”)
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026.
Accordingly, the table regarding expense limits within the sub‑section “Advisory Fees” in the section “Fund Charges and Expenses” is amended and restated as follows with respect to the Fund:
 
Fund    Expense Limit     Date of Undertaking  
Senior Floating Rate and Fixed Income*
    
Class A
     0.98     July 1, 2024  
Class C
     1.73     July 1, 2024  
Class N
     0.68     July 1, 2024  
Class T
     0.98     July 1, 2024  
Class Y
     0.73     July 1, 2024  
 
*
Natixis Advisors will bear a portion of the waiver and/or expense reimbursement. The Natixis Advisors portion of the waiver and/or expense reimbursement will be equal to the ratio of the Natixis Advisors Support Services Fee divided by the management fee earned by Loomis Sayles.

Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds:
LOOMIS SAYLES STRATEGIC ALPHA FUND
LOOMIS SAYLES STRATEGIC INCOME FUND
NATIXIS OAKMARK FUND
NATIXIS U.S. EQUITY OPPORTUNITIES FUND
(each, a “Fund”)
LOOMIS SAYLES STRATEGIC ALPHA FUND
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.60     0.60     0.60     0.60     0.60
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses
     0.18     0.18     0.11     0.18 %1      0.18
Total annual fund operating expenses
     1.03     1.78     0.71     1.03     0.78
Fee waiver and/or expense reimbursement2
     0.05     0.05     0.03     0.05     0.05
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     0.98     1.73     0.68     0.98     0.73
 
1 
Other expenses for Class T shares are estimated for the current fiscal year.
2 
Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.

Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 521      $ 730      $ 961      $ 1,623  
Class C
   $ 276      $ 551      $ 956      $ 1,889  
Class N
   $ 69      $ 221      $ 390      $ 877  
Class T
   $ 347      $ 561      $ 796      $ 1,470  
Class Y
   $ 75      $ 240      $ 424      $ 957  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 176      $ 551      $ 956      $ 1,889  

LOOMIS SAYLES STRATEGIC INCOME FUND
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.92%, 1.67%, 0.62%, 0.92%, 0.67% and 1.17% of the Fund’s average daily net assets for Class A, C, N, T, Y and Admin Class shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y     Admin
Class
 
Management fees
     0.58     0.58     0.58     0.58     0.58     0.58
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00     0.25
Other expenses
     0.17     0.17     0.08     0.17 %1      0.17     0.42 %2 
Total annual fund operating expenses
     1.00     1.75     0.66     1.00     0.75     1.25
Fee waiver and/or expense reimbursement3
     0.08     0.08     0.04     0.08     0.08     0.08
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     0.92     1.67     0.62     0.92     0.67     1.17
 
1 
Other expenses for Class T shares are estimated for the current fiscal year.
2 
Other expenses include an administrative services fee of 0.25% for Admin Class shares.
3 
Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.92%, 1.67%, 0.62%, 0.92%, 0.67% and 1.17% of the Fund’s average daily net assets for Class A, C, N, T, Y and Admin Class shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will

only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 515      $ 716      $ 940      $ 1,584  
Class C
   $ 270      $ 536      $ 935      $ 1,852  
Class N
   $ 63      $ 204      $ 360      $ 815  
Class T
   $ 342      $ 546      $ 774      $ 1,431  
Class Y
   $ 68      $ 225      $ 402      $ 916  
Admin Class
   $ 119      $ 382      $ 672      $ 1,498  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 170      $ 536      $ 935      $ 1,852  

NATIXIS OAKMARK FUND
Effective July 1, 2024, Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.67     0.67     0.67     0.67     0.67
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses
     0.23     0.23     0.36     0.23 %1      0.23
Total annual fund operating expenses
     1.15     1.90     1.03     1.15     0.90
Fee waiver and/or expense reimbursement2,3
     0.12     0.12     0.30     0.12     0.12
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     1.03     1.78     0.73     1.03     0.78
 
1 
Other expenses for Class T shares are estimated for the current fiscal year.
2 
Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
3 
Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through April 30, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses

After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 674      $ 898      $ 1,151      $ 1,873  
Class C
   $ 281      $ 575      $ 1,006      $ 2,008  
Class N
   $ 75      $ 272      $ 514      $ 1,208  
Class T
   $ 352      $ 584      $ 846      $ 1,593  
Class Y
   $ 80      $ 265      $ 476      $ 1,087  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 181      $ 575      $ 1,006      $ 2,008  

NATIXIS U.S. EQUITY OPPORTUNITIES FUND
Effective July 1, 2024, Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.08%, 1.83%, 0.78%, 1.08% and 0.83% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees1
     0.67     0.67     0.67     0.67     0.67
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses
     0.17     0.17     0.71     0.17 %2      0.17
Total annual fund operating expenses
     1.09     1.84     1.38     1.09     0.84
Fee waiver and/or expense reimbursement3,4
     0.01     0.01     0.61     0.01     0.01
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     1.08     1.83     0.77     1.08     0.83
 
1 
The Fund’s operating expenses have been adjusted to reflect a reduction in management fees, effective as of July 1, 2023, as if such reduction had been in effect during the fiscal year ended December 31, 2023. The information has been adjusted to better reflect anticipated expenses of the Fund.
2 
Other expenses for Class T shares are estimated for the current fiscal year.
3 
Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.08%, 1.83%, 0.78%, 1.08% and 0.83% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. Natixis Advisors will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
4 
Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through April 30, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods

indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example for Class N shares is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 679      $ 900      $ 1,140      $ 1,826  
Class C
   $ 286      $ 577      $ 994      $ 1,961  
Class N
   $ 79      $ 324      $ 646      $ 1,558  
Class T
   $ 357      $ 586      $ 834      $ 1,544  
Class Y
   $ 85      $ 266      $ 464      $ 1,035  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 186      $ 577      $ 994      $ 1,961  

Supplement dated June 17, 2024 to the Statement of Additional Information, each dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds:
LOOMIS SAYLES STRATEGIC ALPHA FUND
LOOMIS SAYLES STRATEGIC INCOME FUND
NATIXIS OAKMARK FUND
NATIXIS U.S. EQUITY OPPORTUNITIES FUND
(each, a “Fund”)
LOOMIS SAYLES STRATEGIC ALPHA FUND
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the table regarding expense limits within the sub‑section “Advisory Fees” in the section “Fund Charges and Expenses” is amended and restated as follows with respect to the Fund:
 
Fund    Expense Limit     Date of Undertaking  
Loomis Sayles Strategic Alpha Fund*
    
Class A
     0.98 %     July 1, 2024
Class C
     1.73 %     July 1, 2024
Class N
     0.68 %     July 1, 2024
Class T
     0.98 %     July 1, 2024
Class Y
     0.73 %     July 1, 2024
 
*
Natixis Advisors will bear a portion of the waiver and/or expense reimbursement. The Natixis Advisors portion of the waiver and/or expense reimbursement will be equal to the ratio of the Natixis Advisors Support Services Fee divided by the management fee earned by Loomis Sayles.

LOOMIS SAYLES STRATEGIC INCOME FUND
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.92%, 1.67%, 0.62%, 0.92%, 0.67% and 1.17% of the Fund’s average daily net assets for Class A, C, N, T, Y and Admin Class shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the table regarding expense limits within the sub‑section “Advisory Fees” in the section “Fund Charges and Expenses” is amended and restated as follows with respect to the Fund:
 
Fund    Expense Limit     Date of Undertaking  
Loomis Sayles Strategic Income Fund*
    
Class A
     0.92 %     July 1, 2024
Class C
     1.67 %     July 1, 2024
Class N
     0.62 %     July 1, 2024
Class T
     0.92     July 1, 2024
Class Y
     0.67     July 1, 2024
Admin Class Shares
     1.17     July 1, 2024
 
*
Natixis Advisors will bear a portion of the waiver and/or expense reimbursement. The Natixis Advisors portion of the waiver and/or expense reimbursement will be equal to the ratio of the Natixis Advisors Support Services Fee divided by the management fee earned by Loomis Sayles.

NATIXIS OAKMARK FUND
Effective July 1, 2024, Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the table regarding expense limits within the sub‑section “Advisory Fees” in the section “Fund Charges and Expenses” is amended and restated as follows with respect to the Fund:
 
Fund    Expense Limit     Date of Undertaking  
Natixis Oakmark Fund**
    
Class A
     1.03 %     July 1, 2024
Class C
     1.78 %     July 1, 2024
Class N
     0.73 %     July 1, 2024
Class T
     1.03 %     July 1, 2024
Class Y
     0.78 %     July 1, 2024
 
**
Natixis Advisors and Harris Associates L.P. (“Harris Associates”) have agreed to bear the fee waiver and/or expense reimbursement jointly on a pro rata basis relative to their advisory and sub‑advisory fees, respectively.

NATIXIS U.S. EQUITY OPPORTUNITIES FUND
Effective July 1, 2024, Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.08%, 1.83%, 0.78%, 1.08% and 0.83% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the table regarding expense limits within the sub‑section “Advisory Fees” in the section “Fund Charges and Expenses” is amended and restated as follows with respect to the Fund:
 
Fund    Expense Limit     Date of Undertaking  
Natixis U.S. Equity Opportunities Fund***
    
Class A
     1.08 %     July 1, 2024
Class C
     1.83 %     July 1, 2024
Class N
     0.78 %     July 1, 2024
Class T
     1.08 %     July 1, 2024
Class Y
     0.83 %     July 1, 2024
 
***
Natixis Advisors and each subadviser have agreed to bear the fee waiver and/or expense reimbursement jointly on a pro rata basis relative to their advisory and sub‑advisory fees, respectively.
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1991 Annual Return 1992 Annual Return 1993 Annual Return 1994 Annual Return 1995 Annual Return 1996 Annual Return 1997 Annual Return 1998 Annual Return 1999 Annual Return 2000 Annual Return 2001 Annual Return 2002 Annual Return 2003 Annual Return 2004 Annual Return 2005 Annual Return 2006 Annual Return 2007 Annual Return 2008 Annual Return 2009 Annual Return 2010 Annual Return 2011 Annual Return 2012 Annual Return 2013 Annual Return 2014 Annual Return 2015 Annual Return 2016 Annual Return 2017 Annual Return 2018 Annual Return 2019 Annual Return 2020 Annual Return 2021 Annual Return 2022 Annual Return 2023 Annual Return 2024 Annual Return 2025 Bar Chart Footnotes [Text Block] Bar Chart Closing [Text Block] Bar Chart, Reason Selected Class Different from Immediately Preceding Period [Text] Bar Chart, Returns for Class Not Offered in Prospectus [Text] Year to Date Return, Label Bar Chart, Year to Date Return, Date Bar Chart, Year to Date Return Highest Quarterly Return, Label Label 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Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated April 1, 2024, as may be revised or supplemented from time to time, for the following fund:
LOOMIS SAYLES SENIOR FLOATING RATE AND FIXED INCOME FUND
(the “Fund”)
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.60     0.60     0.60     0.60     0.60
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses1
     0.32     0.32     0.29     0.32 %2      0.32
Total annual fund operating expenses
     1.17     1.92     0.89     1.17     0.92
Fee waiver and/or expense reimbursement3,4
     0.18     0.18     0.20     0.18     0.18
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     0.99     1.74     0.69     0.99     0.74
 
1 
The expense information shown in the table above includes acquired fund fees and expenses of less than 0.01%; the ratios differ from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses.
2 
Other expenses for Class T shares are estimated for the current fiscal year.
3 
Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
4 
Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for the Class N shares. This undertaking is in effect through March 31, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating
expenses remain the same, except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 447      $ 678      $ 941      $ 1,693  
Class C
   $ 277      $ 572      $ 1,007      $ 2,022  
Class N
   $ 70      $ 248      $ 458      $ 1,063  
Class T
   $ 348      $ 581      $ 847      $ 1,607  
Class Y
   $ 76      $ 261      $ 478      $ 1,102  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 177      $ 572      $ 1,007      $ 2,022  
Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds:
LOOMIS SAYLES STRATEGIC ALPHA FUND
NATIXIS OAKMARK FUND
(each, a “Fund”)
LOOMIS SAYLES STRATEGIC ALPHA FUND
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.60     0.60     0.60     0.60     0.60
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses
     0.18     0.18     0.11     0.18 %1      0.18
Total annual fund operating expenses
     1.03     1.78     0.71     1.03     0.78
Fee waiver and/or expense reimbursement2
     0.05     0.05     0.03     0.05     0.05
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     0.98     1.73     0.68     0.98     0.73
 
1 
Other expenses for Class T shares are estimated for the current fiscal year.
2 
Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 521      $ 730      $ 961      $ 1,623  
Class C
   $ 276      $ 551      $ 956      $ 1,889  
Class N
   $ 69      $ 221      $ 390      $ 877  
Class T
   $ 347      $ 561      $ 796      $ 1,470  
Class Y
   $ 75      $ 240      $ 424      $ 957  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 176      $ 551      $ 956      $ 1,889  
NATIXIS OAKMARK FUND
Effective July 1, 2024, Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.67     0.67     0.67     0.67     0.67
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses
     0.23     0.23     0.36     0.23 %1      0.23
Total annual fund operating expenses
     1.15     1.90     1.03     1.15     0.90
Fee waiver and/or expense reimbursement2,3
     0.12     0.12     0.30     0.12     0.12
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     1.03     1.78     0.73     1.03     0.78
 
1 
Other expenses for Class T shares are estimated for the current fiscal year.
2 
Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
3 
Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through April 30, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses
After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 674      $ 898      $ 1,151      $ 1,873  
Class C
   $ 281      $ 575      $ 1,006      $ 2,008  
Class N
   $ 75      $ 272      $ 514      $ 1,208  
Class T
   $ 352      $ 584      $ 846      $ 1,593  
Class Y
   $ 80      $ 265      $ 476      $ 1,087  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 181      $ 575      $ 1,006      $ 2,008  
Loomis Sayles Senior Floating Rate and Fixed Income Fund  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated April 1, 2024, as may be revised or supplemented from time to time, for the following fund:
LOOMIS SAYLES SENIOR FLOATING RATE AND FIXED INCOME FUND
(the “Fund”)
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.60     0.60     0.60     0.60     0.60
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses1
     0.32     0.32     0.29     0.32 %2      0.32
Total annual fund operating expenses
     1.17     1.92     0.89     1.17     0.92
Fee waiver and/or expense reimbursement3,4
     0.18     0.18     0.20     0.18     0.18
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     0.99     1.74     0.69     0.99     0.74
 
1 
The expense information shown in the table above includes acquired fund fees and expenses of less than 0.01%; the ratios differ from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses.
2 
Other expenses for Class T shares are estimated for the current fiscal year.
3 
Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
4 
Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for the Class N shares. This undertaking is in effect through March 31, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating
expenses remain the same, except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 447      $ 678      $ 941      $ 1,693  
Class C
   $ 277      $ 572      $ 1,007      $ 2,022  
Class N
   $ 70      $ 248      $ 458      $ 1,063  
Class T
   $ 348      $ 581      $ 847      $ 1,607  
Class Y
   $ 76      $ 261      $ 478      $ 1,102  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 177      $ 572      $ 1,007      $ 2,022  
Loomis Sayles Strategic Alpha Fund  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds:
LOOMIS SAYLES STRATEGIC ALPHA FUND
(each, a “Fund”)
LOOMIS SAYLES STRATEGIC ALPHA FUND
Effective July 1, 2024, Loomis, Sayles & Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.60     0.60     0.60     0.60     0.60
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses
     0.18     0.18     0.11     0.18 %1      0.18
Total annual fund operating expenses
     1.03     1.78     0.71     1.03     0.78
Fee waiver and/or expense reimbursement2
     0.05     0.05     0.03     0.05     0.05
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     0.98     1.73     0.68     0.98     0.73
 
1 
Other expenses for Class T shares are estimated for the current fiscal year.
2 
Loomis, Sayles & Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 521      $ 730      $ 961      $ 1,623  
Class C
   $ 276      $ 551      $ 956      $ 1,889  
Class N
   $ 69      $ 221      $ 390      $ 877  
Class T
   $ 347      $ 561      $ 796      $ 1,470  
Class Y
   $ 75      $ 240      $ 424      $ 957  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 176      $ 551      $ 956      $ 1,889  
Natixis Oakmark Fund  
Risk/Return: rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock
Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds:
NATIXIS OAKMARK FUND
(each, a “Fund”)
NATIXIS OAKMARK FUND
Effective July 1, 2024, Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026.
Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees & Expenses” are amended and restated as follows with respect to the Fund:
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
     Class A     Class C     Class N     Class T     Class Y  
Management fees
     0.67     0.67     0.67     0.67     0.67
Distribution and/or service (12b‑1) fees
     0.25     1.00     0.00     0.25     0.00
Other expenses
     0.23     0.23     0.36     0.23 %1      0.23
Total annual fund operating expenses
     1.15     1.90     1.03     1.15     0.90
Fee waiver and/or expense reimbursement2,3
     0.12     0.12     0.30     0.12     0.12
Total annual fund operating expenses after fee waiver and/or expense reimbursement
     1.03     1.78     0.73     1.03     0.78
 
1 
Other expenses for Class T shares are estimated for the current fiscal year.
2 
Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed.
3 
Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through April 30, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees.
Example
This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses
After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
 
If shares are redeemed:    1 year      3 years      5 years      10 years  
Class A
   $ 674      $ 898      $ 1,151      $ 1,873  
Class C
   $ 281      $ 575      $ 1,006      $ 2,008  
Class N
   $ 75      $ 272      $ 514      $ 1,208  
Class T
   $ 352      $ 584      $ 846      $ 1,593  
Class Y
   $ 80      $ 265      $ 476      $ 1,087  
 
If shares are not redeemed:    1 year      3 years      5 years      10 years  
Class C
   $ 181      $ 575      $ 1,006      $ 2,008  
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Because the share price of the Fund will fluctuate, when you sell your shares they may be worth more or less than what you originally paid for them. The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. (B) If the Fund is a Money Market Fund that is a government Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(16), or a retail Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(25), and that is subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter (or is not subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter pursuant to \u00a7 270.2a\u20137(c)(2)(iii) of this chapter, but has chosen to rely on the ability to impose liquidity fees and suspend redemptions consistent with the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii)), include the following statement: You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. (C) If the Fund is a Money Market Fund that is a government Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(16), that is not subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter pursuant to \u00a7 270.2a\u20137(c)(2)(iii) of this chapter, and that has not chosen to rely on the ability to impose liquidity fees and suspend redemptions consistent with the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii), include the following statement: You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. Instruction. If an affiliated person, promoter, or principal underwriter of the Fund, or an affiliated person of such a person, has contractually committed to provide financial support to the Fund, and the term of the agreement will extend for at least one year following the effective date of the Fund's registration statement, the statement specified in Item 4(b)(1)(ii)(A), Item 4(b)(1)(ii)(B), or Item 4(b)(1)(ii)(C) may omit the last sentence (\"The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time.\"). For purposes of this Instruction, the term \"financial support\" includes any capital contribution, purchase of a security from the Fund in reliance on \u00a7 270.17a\u20139, purchase of any defaulted or devalued security at par, execution of letter of credit or letter of indemnity, capital support agreement (whether or not the Fund ultimately received support), performance guarantee, or any other similar action reasonably intended to increase or stabilize the value or liquidity of the fund's portfolio; however, the term \"financial support\" excludes any routine waiver of fees or reimbursement of fund expenses, routine inter-fund lending, routine inter-fund purchases of fund shares, or any action that would qualify as financial support as defined above, that the board of directors has otherwise determined not to be reasonably intended to increase or stabilize the value or liquidity of the fund's portfolio. 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A0#% @ FDO16+7"MW0W%@ YTP! !8 M ( !:CD &YF=&EI+3(P,C0P-C$W7V1E9BYX;6Q02P$"% ,4 M" ":2]%8*#.#&V0E #Y5P( %@ @ '53P ;F9T:6DM,C R M-# V,3=?;&%B+GAM;%!+ 0(4 Q0 ( )I+T5@YMCFP&UL4$L%!@ % - 4 20$ !.* $! end XML 18 d849238d497_htm.xml IDEA: XBRL DOCUMENT 0000052136 2024-06-17 2024-06-17 0000052136 nftii:S000008033Member 2024-06-17 2024-06-17 0000052136 nftii:S000030600Member 2024-06-17 2024-06-17 0000052136 nftii:S000034097Member 2024-06-17 2024-06-17 iso4217:USD pure false 2024-06-17 2024-06-17 497 0000052136 Natixis Funds Trust II N-1A 2024-06-17 <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:center;"><span style="font-style:italic">Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated April 1, 2024, as may be revised or supplemented from time to time, for the following fund: </span></div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">LOOMIS SAYLES SENIOR FLOATING RATE AND FIXED INCOME FUND </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">(the “Fund”) </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">Effective July 1, 2024, Loomis, Sayles &amp; Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026. </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;"><span style="font-style:italic">Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees &amp; Expenses” are amended and restated as follows with respect to the Fund: </span></div><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Annual Fund Operating Expenses </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"><span style="font-style:italic">(expenses that you pay each year as a percentage of the value of your investment) </span></div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td style="width:76%;"></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class A</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class C</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class N</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class T</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class Y</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Management fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Distribution and/or service (12b‑1) fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Other expenses<sup style="font-size:75%;vertical-align:top">1</sup></div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.32</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.32</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.29</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.32</td> <td style="white-space:nowrap;vertical-align:bottom;">%<sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.32</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.17</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.92</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.89</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.17</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.92</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Fee waiver and/or expense reimbursement<sup style="font-size:75%;vertical-align:top">3,4</sup></div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.20</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses after fee waiver and/or expense reimbursement</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.99</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.74</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.69</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.99</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.74</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">The expense information shown in the table above includes acquired fund fees and expenses of less than 0.01%; the ratios differ from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Other expenses for Class T shares are estimated for the current fiscal year. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">3</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Loomis, Sayles &amp; Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">4</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for the Class N shares. This undertaking is in effect through March 31, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees. </div> </td> </tr> </table><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Example </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"> expenses remain the same, except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:74%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class A</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">447</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">678</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">941</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,693</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">277</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">572</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,007</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">2,022</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class N</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">70</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">248</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">458</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,063</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class T</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">348</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">581</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">847</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,607</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class Y</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">76</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">261</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">478</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,102</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:8pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:74%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are not redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">177</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">572</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,007</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">2,022</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:center;"><span style="font-style:italic">Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds: </span></div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">LOOMIS SAYLES STRATEGIC ALPHA FUND </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">NATIXIS OAKMARK FUND </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">(each, a “Fund”) </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">LOOMIS SAYLES STRATEGIC ALPHA FUND </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">Effective July 1, 2024, Loomis, Sayles &amp; Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026. </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;"><span style="font-style:italic">Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees &amp; Expenses” are amended and restated as follows with respect to the Fund: </span></div><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Annual Fund Operating Expenses </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"><span style="font-style:italic">(expenses that you pay each year as a percentage of the value of your investment) </span></div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td style="width:76%;"></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class A</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class C</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class N</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class T</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class Y</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Management fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Distribution and/or service (12b‑1) fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Other expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.11</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">%<sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.78</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.71</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.78</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Fee waiver and/or expense reimbursement<sup style="font-size:75%;vertical-align:top">2</sup></div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.05</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.05</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.05</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.05</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses after fee waiver and/or expense reimbursement</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.98</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.73</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.68</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.98</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.73</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Other expenses for Class T shares are estimated for the current fiscal year. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Loomis, Sayles &amp; Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed. </div> </td> </tr> </table><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Example </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be: </div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:75%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class A</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">521</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">730</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">961</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,623</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">276</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">551</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">956</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,889</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class N</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">69</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">221</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">390</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">877</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class T</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">347</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">561</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">796</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,470</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class Y</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">75</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">240</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">424</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">957</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:8pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:75%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are not redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">176</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">551</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">956</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,889</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">NATIXIS OAKMARK FUND </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">Effective July 1, 2024, Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026. </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;"><span style="font-style:italic">Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees &amp; Expenses” are amended and restated as follows with respect to the Fund: </span></div><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Annual Fund Operating Expenses </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"><span style="font-style:italic">(expenses that you pay each year as a percentage of the value of your investment) </span></div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td style="width:76%;"></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class A</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class C</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class N</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class T</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class Y</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Management fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Distribution and/or service (12b‑1) fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Other expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.23</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.23</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.36</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.23</td> <td style="white-space:nowrap;vertical-align:bottom;">%<sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.23</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.15</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.90</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.15</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.90</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Fee waiver and/or expense reimbursement<sup style="font-size:75%;vertical-align:top">2,3</sup></div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.12</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.12</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.30</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.12</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.12</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses after fee waiver and/or expense reimbursement</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.78</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.73</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.78</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Other expenses for Class T shares are estimated for the current fiscal year. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">3</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through April 30, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees. </div> </td> </tr> </table><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Example </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"> After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be: </div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:74%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class A</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">674</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">898</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,151</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,873</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">281</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">575</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,006</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">2,008</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class N</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">75</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">272</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">514</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,208</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class T</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">352</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">584</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">846</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,593</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class Y</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">80</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">265</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">476</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,087</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:8pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:74%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are not redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">181</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">575</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,006</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">2,008</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:center;"><span style="font-style:italic">Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated April 1, 2024, as may be revised or supplemented from time to time, for the following fund: </span></div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">LOOMIS SAYLES SENIOR FLOATING RATE AND FIXED INCOME FUND </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">(the “Fund”) </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">Effective July 1, 2024, Loomis, Sayles &amp; Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026. </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;"><span style="font-style:italic">Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees &amp; Expenses” are amended and restated as follows with respect to the Fund: </span></div><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Annual Fund Operating Expenses </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"><span style="font-style:italic">(expenses that you pay each year as a percentage of the value of your investment) </span></div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td style="width:76%;"></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class A</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class C</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class N</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class T</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class Y</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Management fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Distribution and/or service (12b‑1) fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Other expenses<sup style="font-size:75%;vertical-align:top">1</sup></div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.32</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.32</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.29</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.32</td> <td style="white-space:nowrap;vertical-align:bottom;">%<sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.32</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.17</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.92</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.89</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.17</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.92</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Fee waiver and/or expense reimbursement<sup style="font-size:75%;vertical-align:top">3,4</sup></div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.20</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses after fee waiver and/or expense reimbursement</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.99</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.74</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.69</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.99</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.74</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">The expense information shown in the table above includes acquired fund fees and expenses of less than 0.01%; the ratios differ from the expense information disclosed in the Fund’s financial highlights table because the financial highlights table reflects the operating expenses of the Fund and does not include acquired fund fees and expenses. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Other expenses for Class T shares are estimated for the current fiscal year. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">3</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Loomis, Sayles &amp; Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through March 31, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">4</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for the Class N shares. This undertaking is in effect through March 31, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees. </div> </td> </tr> </table><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Example </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"> expenses remain the same, except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be: </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:74%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class A</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">447</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">678</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">941</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,693</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">277</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">572</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,007</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">2,022</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class N</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">70</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">248</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">458</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,063</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class T</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">348</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">581</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">847</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,607</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class Y</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">76</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">261</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">478</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,102</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:8pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:74%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are not redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">177</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">572</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,007</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">2,022</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table> 2024-06-17 <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:center;"><span style="font-style:italic">Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds: </span></div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">NATIXIS OAKMARK FUND </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">(each, a “Fund”) </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">NATIXIS OAKMARK FUND </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">Effective July 1, 2024, Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026. </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;"><span style="font-style:italic">Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees &amp; Expenses” are amended and restated as follows with respect to the Fund: </span></div><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Annual Fund Operating Expenses </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"><span style="font-style:italic">(expenses that you pay each year as a percentage of the value of your investment) </span></div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td style="width:76%;"></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class A</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class C</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class N</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class T</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class Y</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Management fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.67</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Distribution and/or service (12b‑1) fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Other expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.23</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.23</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.36</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.23</td> <td style="white-space:nowrap;vertical-align:bottom;">%<sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.23</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.15</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.90</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.15</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.90</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Fee waiver and/or expense reimbursement<sup style="font-size:75%;vertical-align:top">2,3</sup></div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.12</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.12</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.30</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.12</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.12</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses after fee waiver and/or expense reimbursement</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.78</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.73</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.78</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Other expenses for Class T shares are estimated for the current fiscal year. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Natixis Advisors, LLC (“Natixis Advisors”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 1.03%, 1.78%, 0.73%, 1.03% and 0.78% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fees or expenses were waived/reimbursed. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">3</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Natixis Advisors has given a binding contractual undertaking to the Fund to reimburse any and all transfer agency expenses for Class N shares. This undertaking is in effect through April 30, 2025 and may be terminated before then only with the consent of the Fund’s Board of Trustees. </div> </td> </tr> </table><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Example </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"> After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the date noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be: </div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:74%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class A</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">674</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">898</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,151</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,873</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">281</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">575</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,006</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">2,008</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class N</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">75</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">272</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">514</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,208</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class T</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">352</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">584</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">846</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,593</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class Y</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">80</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">265</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">476</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,087</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:8pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:74%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are not redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">181</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">575</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,006</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">2,008</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:center;"><span style="font-style:italic">Supplement dated June 17, 2024 to the Prospectus and Summary Prospectus, each dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds: </span></div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">LOOMIS SAYLES STRATEGIC ALPHA FUND </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">(each, a “Fund”) </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">LOOMIS SAYLES STRATEGIC ALPHA FUND </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">Effective July 1, 2024, Loomis, Sayles &amp; Company, L.P. has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026. </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;"><span style="font-style:italic">Accordingly, the Annual Fund Operating Expenses table and the Example table within the section “Fund Fees &amp; Expenses” are amended and restated as follows with respect to the Fund: </span></div><div style="margin-top:18pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Annual Fund Operating Expenses </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;"><span style="font-style:italic">(expenses that you pay each year as a percentage of the value of your investment) </span></div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:100%;border:0px;margin:0 auto"> <tr> <td style="width:76%;"></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:2%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class A</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class C</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class N</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class T</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;"> </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">Class Y</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Management fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.60</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Distribution and/or service (12b‑1) fees</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.25</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.00</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Other expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.11</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">%<sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.18</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.78</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.71</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.78</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Fee waiver and/or expense reimbursement<sup style="font-size:75%;vertical-align:top">2</sup></div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.05</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.05</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.03</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.05</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.05</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Total annual fund operating expenses after fee waiver and/or expense reimbursement</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.98</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1.73</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.68</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.98</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> <td style="vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">0.73</td> <td style="white-space:nowrap;vertical-align:bottom;">% </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">1</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Other expenses for Class T shares are estimated for the current fiscal year. </div> </td> </tr> </table> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;border:0px;width:100%"> <tr style="page-break-inside:avoid"> <td style="width:4%;vertical-align:top;text-align: left;"><sup style="font-size:75%;vertical-align:top">2</sup> </td> <td style="text-align: left;vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:left;">Loomis, Sayles &amp; Company, L.P. (“Loomis Sayles” or the “Adviser”) has given a binding contractual undertaking to the Fund to limit the amount of the Fund’s total annual fund operating expenses to 0.98%, 1.73%, 0.68%, 0.98% and 0.73% of the Fund’s average daily net assets for Class A, C, N, T and Y shares, respectively, exclusive of brokerage expenses, interest expense, taxes, acquired fund fees and expenses, organizational and extraordinary expenses, such as litigation and indemnification expenses. This undertaking is in effect through April 30, 2026 and may be terminated before then only with the consent of the Fund’s Board of Trustees. The Adviser will be permitted to recover, on a class by class basis, management fees waived and/or expenses reimbursed to the extent that expenses in later periods fall below both (1) the class’ applicable expense limitation at the time such amounts were waived/reimbursed and (2) the class’ current applicable expense limitation. The Fund will not be obligated to repay any such waived/reimbursed fees and expenses more than one year after the end of the fiscal year in which the fee/expense was waived/reimbursed. </div> </td> </tr> </table><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;">Example </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;">This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods (except where indicated). The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same except that the example is based on the Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement assuming that such waiver and/or reimbursement will only be in place through the dates noted above and on the Total Annual Fund Operating Expenses for the remaining periods. The example for Class C shares for the ten‑year period reflects the conversion to Class A shares after eight years. The example does not take into account brokerage commissions and other fees to financial intermediaries that you may pay on your purchases and sales of shares of the Fund. Although your actual costs may be higher or lower, based on these assumptions your costs would be: </div><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:10pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:75%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class A</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">521</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">730</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">961</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,623</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">276</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">551</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">956</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,889</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class N</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">69</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">221</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">390</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">877</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class T</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">347</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">561</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">796</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,470</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class Y</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">75</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">240</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">424</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">957</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table><div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt;"> </div> <table cellpadding="0" cellspacing="0" style="border-collapse:collapse;font-family:times new roman;font-size:8pt;width:92%;border:0px;margin:0 auto"> <tr> <td style="width:75%;"></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> <td style="vertical-align:bottom;width:3%;"></td> <td></td> <td></td> <td></td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap;"> <span style="margin-top:0pt;margin-bottom:0pt;border-bottom:1.00pt solid #000000;display:table-cell;font-size:8pt;font-family:times new roman;font-weight:bold">If shares are not redeemed:</span></td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">1 year</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">3 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">5 years</span></td> <td style="vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td colspan="2" style="text-align: center;border-bottom:1.00pt solid #000000;vertical-align:bottom;"><span style="font-weight:bold">10 years</span></td> <td style="vertical-align:bottom;"> </td> </tr> <tr style="page-break-inside:avoid;font-family:times new roman;font-size:10pt;background-color:#cceeff"> <td style="vertical-align:top;"> <div style="margin-top:0pt;margin-bottom:0pt;margin-left:1.00em;text-indent:-1.00em;font-size:10pt;font-family:times new roman;">Class C</div> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">176</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">551</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">956</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> <td style="vertical-align:bottom;">  </td> <td style="white-space:nowrap;vertical-align:bottom;">$</td> <td style="white-space:nowrap;vertical-align:bottom;text-align: right;">1,889</td> <td style="white-space:nowrap;vertical-align:bottom;"> </td> </tr> </table>