0001084380 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:C000205818Member 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:C000205820Member 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:C000205817Member 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:C000205816Member 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:C000205819Member 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:RegulationSSecuritiesRiskMember 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:RisksOfInvestmentsInTheFundsTEFRABondSubsidiaryMember 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:RisksOfInvestmentsInTheFundsWhollyOwnedSubsidiariesMember 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:RisksOfInvestmentsInShortDurationAndImpactBondFundsTEFRABondSubsidiaryMember 2026-03-31 2026-03-31 0001084380 ck0001084380:S000063523Member ck0001084380:RisksOfInvestmentsInTheShortDurationAndImpactBondFundsWhollyOwnedSubsidiariesMember 2026-03-31 2026-03-31 pure iso4217:USD Nuveen Fixed-Income Funds Nuveen Short Duration and Impact Bond Fund SUPPLEMENT NO. 1 dated August 31, 2026, to the Statutory Prospectus dated August 1, 2026 Nuveen Short Duration and Impact Bond Fund 2026-08-01 The following hereby replaces in its entirety the “Annual Fund Operating Expenses” table in the “Fees and expenses” section beginning on page 90 of the Statutory Prospectus in the “Summary information” section for the Nuveen Short Duration and Impact Bond Fund: <table cellpadding="0" style="border-collapse: collapse; width: 100%; font: 8.5pt Arial, Helvetica, Sans-Serif; border-spacing: 0px;"> <tr style="vertical-align: bottom"> <td style="border-bottom: Black 2px solid; padding-left: 10pt; text-indent: -10pt"> </td><td style="padding-bottom: 1px; border-bottom: Black 2px solid"> </td> <td style="border-bottom: Black 2px solid; text-align: right">Class A</td><td style="padding-bottom: 1px; border-bottom: Black 2px solid; text-align: right"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Class I</td><td style="padding-bottom: 1px; border-bottom: Black 2px solid; text-align: right"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Premier Class</td><td style="padding-bottom: 1px; border-bottom: Black 2px solid; text-align: right"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Class R6</td><td style="padding-bottom: 1px; border-bottom: Black 2px solid; text-align: right"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Retirement Class</td></tr> <tr style="vertical-align: bottom; background-color: rgb(229,255,255)"> <td style="width: 45%; text-align: left; padding-left: 10pt; text-indent: -10pt">Management fees</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">0.30%</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">0.30%</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">0.30%</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">0.30%</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">0.30%</td></tr> <tr style="vertical-align: bottom; "> <td style="text-align: left; padding-left: 10pt; text-indent: -10pt">Distribution (Rule 12b-1) fees</td><td> </td> <td style="text-align: right">0.25%</td><td> </td> <td style="text-align: right">–</td><td> </td> <td style="text-align: right">0.15%</td><td> </td> <td style="text-align: right">–</td><td> </td> <td style="text-align: right">–</td></tr> <tr style="vertical-align: bottom; background-color: rgb(229,255,255)"> <td style="padding-left: 10pt; text-indent: -10pt">Other expenses1</td><td> </td> <td style="text-align: right">0.26%</td><td> </td> <td style="text-align: right">0.23%</td><td> </td> <td style="text-align: right">0.20%</td><td> </td> <td style="text-align: right">0.19%</td><td> </td> <td style="text-align: right">0.44%</td></tr> <tr style="vertical-align: bottom; "> <td style="text-align: left; padding-left: 10pt; text-indent: -10pt">Total annual Fund operating expenses</td><td> </td> <td style="text-align: right">0.81%</td><td> </td> <td style="text-align: right">0.53%</td><td> </td> <td style="text-align: right">0.65%</td><td> </td> <td style="text-align: right">0.49%</td><td> </td> <td style="text-align: right">0.74%</td></tr> <tr style="vertical-align: bottom; background-color: rgb(229,255,255)"> <td style="text-align: left; padding-left: 10pt; text-indent: -10pt">Waivers and expense reimbursements2</td><td> </td> <td style="text-align: right">(0.15)%</td><td> </td> <td style="text-align: right">(0.15)%</td><td> </td> <td style="text-align: right">(0.16)%</td><td> </td> <td style="text-align: right">(0.15)%</td><td> </td> <td style="text-align: right">(0.15)%</td></tr> <tr style="vertical-align: bottom; "> <td style="text-align: left; border-bottom: Black 1px solid; padding-left: 10pt; text-indent: -10pt">Total annual Fund operating expenses after fee waiver and/or expense reimbursement</td><td style="padding-bottom: 1px; border-bottom: Black 1px solid"> </td> <td style="text-align: right; padding-bottom: 1px; border-bottom: Black 1px solid">0.66%</td><td style="padding-bottom: 1px; border-bottom: Black 1px solid"> </td> <td style="text-align: right; padding-bottom: 1px; border-bottom: Black 1px solid">0.38%</td><td style="padding-bottom: 1px; border-bottom: Black 1px solid"> </td> <td style="text-align: right; padding-bottom: 1px; border-bottom: Black 1px solid">0.49%</td><td style="padding-bottom: 1px; border-bottom: Black 1px solid"> </td> <td style="text-align: right; padding-bottom: 1px; border-bottom: Black 1px solid">0.34%</td><td style="padding-bottom: 1px; border-bottom: Black 1px solid"> </td> <td style="text-align: right; padding-bottom: 1px; border-bottom: Black 1px solid">0.59%</td></tr> </table> <table border="0" cellpadding="0" style="width: 100%; margin-top: 0pt; margin-bottom: 0pt; font: 8.5pt Arial, Helvetica, Sans-Serif; border-spacing: 0px;"> <tr style="vertical-align: top"> <td style="width: 2%">1</td> <td style="width: 98%">Restated to reflect estimates for the current fiscal year.</td></tr> <tr style="vertical-align: top"> <td style="width: 2%">2</td> <td style="width: 98%">Under the Fund’s expense reimbursement arrangements, the Fund’s investment adviser, Nuveen Fund Advisors, LLC (“Nuveen Fund Advisors”), has contractually agreed to reimburse the Fund for any Total annual Fund operating expenses (excluding interest, taxes, brokerage commissions or other transactional expenses, Acquired fund fees and expenses and extraordinary expenses) that exceed: (i) 0.70% of average daily net assets for Class A shares; (ii) 0.50% of average daily net assets for Class I shares; (iii) 0.50% of average daily net assets for Premier Class shares; (iv) 0.35% of average daily net assets for Class R6 shares; and (v) 0.60% of average daily net assets for Retirement Class shares of the Fund. These expense reimbursement arrangements will continue through at least July 31, 2028, unless changed with approval of the Board of Trustees. Nuveen Fund Advisors has also agreed to waive fees and/or reimburse expenses to reduce the maximum Total annual operating expenses detailed above for each class of the Fund by 0.01%. This waiver and/or reimbursement arrangement may be terminated or modified prior to July 31, 2028 only with approval of the Board of Trustees.</td></tr> </table> 0.003 0.003 0.003 0.003 0.003 0.0025 0.0015 0.0026 0.0023 0.002 0.0019 0.0044 0.0081 0.0053 0.0065 0.0049 0.0074 -0.0015 -0.0015 -0.0016 -0.0015 -0.0015 0.0066 0.0038 0.0049 0.0034 0.0059 Restated to reflect estimates for the current fiscal year. 2028-07-31 The following hereby replaces in its entirety the table in the “Example” sub-section of the “Fees and expenses” section on page 90 of the Statutory Prospectus in the “Summary information” section for the Nuveen Short Duration and Impact Bond Fund: <table cellpadding="0" style="border-collapse: collapse; width: 100%; font: 8.5pt Arial, Helvetica, Sans-Serif; border-spacing: 0px;"> <tr style="vertical-align: bottom"> <td style="border-bottom: Black 2px solid"> </td><td style="border-bottom: Black 2px solid"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Class A</td><td style="border-bottom: Black 2px solid"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Class I</td><td style="border-bottom: Black 2px solid"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Premier Class</td><td style="border-bottom: Black 2px solid"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Class R6</td><td style="border-bottom: Black 2px solid"> </td> <td style="text-align: right; border-bottom: Black 2px solid">Retirement Class</td></tr> <tr style="vertical-align: bottom; background-color: rgb(229,255,255)"> <td style="width: 45%">1 year</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">$ 316</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">$ 39</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">$ 50</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">$ 35</td><td style="width: 2%"> </td> <td style="width: 9%; text-align: right">$ 60</td></tr> <tr style="vertical-align: bottom; "> <td>3 years</td><td> </td> <td style="text-align: right">$ 472</td><td> </td> <td style="text-align: right">$139</td><td> </td> <td style="text-align: right">$175</td><td> </td> <td style="text-align: right">$126</td><td> </td> <td style="text-align: right">$206</td></tr> <tr style="vertical-align: bottom; background-color: rgb(229,255,255)"> <td>5 years</td><td> </td> <td style="text-align: right">$ 659</td><td> </td> <td style="text-align: right">$266</td><td> </td> <td style="text-align: right">$330</td><td> </td> <td style="text-align: right">$243</td><td> </td> <td style="text-align: right">$381</td></tr> <tr style="vertical-align: bottom; "> <td style="border-bottom: Black 1px solid">10 years</td><td style="border-bottom: Black 1px solid"> </td> <td style="text-align: right; border-bottom: Black 1px solid">$1,199</td><td style="border-bottom: Black 1px solid"> </td> <td style="text-align: right; border-bottom: Black 1px solid">$635</td><td style="border-bottom: Black 1px solid"> </td> <td style="text-align: right; border-bottom: Black 1px solid">$779</td><td style="border-bottom: Black 1px solid"> </td> <td style="text-align: right; border-bottom: Black 1px solid">$586</td><td style="border-bottom: Black 1px solid"> </td> <td style="text-align: right; border-bottom: Black 1px solid">$889</td></tr> </table> 316 39 50 35 60 472 139 175 126 206 659 266 330 243 381 1199 635 779 586 889 The following is hereby added after the final paragraph of the “Principal investment strategies” section beginning on page 92 of the Statutory Prospectus in the “Summary information” section for the Nuveen Short Duration and Impact Bond Fund: The Fund may also seek exposure to Regulation S fixed-income securities through investment in a Cayman Islands exempted company that is wholly owned and controlled by the Fund (the “Regulation S Subsidiary”). A Cayman Islands exempted company is a corporate entity established under the laws of the Cayman Islands for the purpose of conducting business mainly outside the Cayman Islands. Regulation S fixed-income securities are debt securities of U.S. and non-U.S. issuers that are issued through private placement offerings without registration with the Securities and Exchange Commission (“SEC”) pursuant to Regulation S under the Securities Act of 1933. These may include sovereign or quasi-sovereign bonds, corporate bonds and structured notes issued pursuant to Regulation S. The Regulation S Subsidiary is advised by Nuveen Asset Management, LLC (“Nuveen Asset Management”) and has the same investment objective as the Fund, except that the Regulation S Subsidiary may invest without limitation in Regulation S securities. The Fund may also seek exposure to certain bonds or fixed-income securities that are sold subject to selling restrictions under the Tax Equity and Fiscal Responsibility Act of 1982 (“TEFRA”), which generally restricts the purchase of such bonds to non-U.S. persons (as defined for applicable U.S. federal income tax purposes) (“TEFRA Bonds”) through investment of up to 25% of its total assets in a separate Cayman Islands exempted company that is wholly owned and controlled by the Fund (the “TEFRA Bond Subsidiary”). These may include sovereign or quasi-sovereign bonds, corporate bonds and structured notes issued pursuant to TEFRA. The TEFRA Bond Subsidiary is advised by Nuveen Asset Management and has the same investment objective as the Fund, except that the TEFRA Bond Subsidiary may invest without limitation in TEFRA Bonds. Regulation S Securities Risk—The risk that Regulation S securities may be less liquid than publicly traded securities. Regulation S securities may not be subject to the disclosure and other investor protection requirements that would be applicable to publicly traded securities. As a result, Regulation S securities may involve a high degree of business and financial risk and may result in losses. Risks of Investments in the Fund’s TEFRA Bond Subsidiary—The Fund may seek exposure to TEFRA Bonds through investment of up to 25% of its total assets in the TEFRA Bond Subsidiary. Under the applicable U.S. Treasury regulations, income from the TEFRA Bond Subsidiary will only be considered qualifying income under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”), if certain conditions are met. The tax treatment of the investments in the TEFRA Bond Subsidiary could affect the character, timing and/or amount of the Fund’s taxable income or any gains and distributions made by the Fund. Risks of Investments in the Fund’s Wholly Owned Subsidiaries—Neither the Regulation S Subsidiary nor the TEFRA Bond Subsidiary (together with the Regulation S Subsidiary, the “Subsidiaries”) is registered under the Investment Company Act of 1940 (the “1940 Act”), and the Subsidiaries are not subject to its investor protections (except as otherwise noted in the Prospectus). As an investor in the Subsidiaries, the Fund does not have all of the protections offered to investors by the 1940 Act. However, the Subsidiaries are wholly owned and controlled by the Fund and managed by Nuveen Asset Management. Risks of Investments in each of the Core and Impact Bond Fund’s and Short Duration and Impact Bond Fund’s TEFRA Bond Subsidiary—The Core and Impact Bond Fund and the Short Duration and Impact Bond Fund may each also seek exposure to TEFRA Bonds through investment of up to 25% of its total assets in its TEFRA Bond Subsidiary. Under the applicable U.S. Treasury regulations, each Fund’s income inclusion with respect to a subsidiary will generally be treated as qualifying income under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”), if either (A) there is a distribution out of the earnings and profits of the subsidiary that are attributable to such income inclusion or (B) such inclusion is derived with respect to the Fund’s business of investing in stock, securities, or currencies. The tax treatment of each Fund’s investments in its TEFRA Bond Subsidiary could affect whether income derived from such investments is qualifying income, or otherwise affect the character, timing and/or amount of the Fund’s taxable income or any gains and distributions made by the Fund. Risks of Investments in the Core and Impact Bond Fund’s, Green Bond Fund’s and Short Duration and Impact Bond Fund’s Wholly Owned Subsidiaries—The Funds, through their investment in the Core and Impact Bond Fund’s Regulation S Subsidiary, the Green Bond Fund’s Subsidiary, the Short Duration and Impact Bond Fund’s Regulation S Subsidiary, (together with the Core and Impact Bond Fund’s Regulation S Subsidiary and the Green Bond Fund’s Subsidiary, the “Regulation S Subsidiaries”) and the Core and Impact Bond Fund’s TEFRA Bond Subsidiary and the Short Duration and Impact Bond Fund’s TEFRA Bond Subsidiary (together with the Regulation S Subsidiaries, the “Subsidiaries”), are indirectly exposed to the risks associated with the Subsidiaries’ investments. There can be no assurance that the investment objective of the Funds or the Subsidiarieswill be achieved. Further, the Subsidiaries are not registered under the 1940 Act and, therefore, are not subject to the investor protections (except as otherwise noted in the Prospectus) of the 1940 Act. As an investor in a Subsidiary, a Fund does not have all of the protections offered to investors by the 1940 Act. However, each Subsidiary is wholly owned and controlled by the applicable Fund and managed by Nuveen Asset Management. Changes in the laws of the United States and/or Cayman Islands could result in the inability of the Funds to invest in the Subsidiaries as described in this Prospectus and in the Funds’ SAI and could adversely affect the Funds. 497 N-1A 0001084380 false 2026-03-31 TIAA-CREF FUNDS Under the Fund’s expense reimbursement arrangements, the Fund’s investment adviser, Nuveen Fund Advisors, LLC (“Nuveen Fund Advisors”), has contractually agreed to reimburse the Fund for any Total annual Fund operating expenses (excluding interest, taxes, brokerage commissions or other transactional expenses, Acquired fund fees and expenses and extraordinary expenses) that exceed: (i) 0.70% of average daily net assets for Class A shares; (ii) 0.50% of average daily net assets for Class I shares; (iii) 0.50% of average daily net assets for Premier Class shares; (iv) 0.35% of average daily net assets for Class R6 shares; and (v) 0.60% of average daily net assets for Retirement Class shares of the Fund. These expense reimbursement arrangements will continue through at least July 31, 2028, unless changed with approval of the Board of Trustees. Nuveen Fund Advisors has also agreed to waive fees and/or reimburse expenses to reduce the maximum Total annual operating expenses detailed above for each class of the Fund by 0.01%. This waiver and/or reimbursement arrangement may be terminated or modified prior to July 31, 2028 only with approval of the Board of Trustees. Restated to reflect estimates for the current fiscal year.