0000931151 2025-12-31 2025-12-31 0000931151 cik0000931151:S000002071Member 2025-12-31 2025-12-31 0000931151 cik0000931151:S000002071Member cik0000931151:C000005429Member 2025-12-31 2025-12-31 0000931151 cik0000931151:S000002071Member cik0000931151:C000177207Member 2025-12-31 2025-12-31 0000931151 cik0000931151:S000002071Member cik0000931151:C000005430Member 2025-12-31 2025-12-31 0000931151 cik0000931151:S000002071Member cik0000931151:C000005431Member 2025-12-31 2025-12-31 0000931151 cik0000931151:S000002071Member cik0000931151:C000232530Member 2025-12-31 2025-12-31 iso4217:USD pure <div style="border-bottom:0.75pt; border-bottom-style:solid; border-bottom-color:#000000; margin-bottom:12pt; padding:0pt 0pt 1pt 0pt;"><div style="font-size:9.0pt; font-family:Arial; text-align:left; font-weight:normal;"><span style="font-size:9.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;">Supplement to Prospectus and Summary Prospectus dated March 1, 2026</span></div></div><p style="margin-top:revert; margin-bottom:revert; font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;">Effective November 1, 2026, the total expense ratio limitation applicable to the fund’s Investor Class will be reduced from 0.68% to 0.44%. Accordingly, the fee table and expense example in the Summary Prospectus and Section 1 of the Prospectus are revised as follows:</p> Fees and Expenses <p style="margin-top:revert; margin-bottom:revert; font-size:8.0pt; font-family:Arial; text-align:left; font-weight:bold; font-style:normal;"><span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:normal; text-decoration:none;">This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. The fees and expenses below are annualized based on the fees and expenses for the six-month period ended June 30, 2026.</span><span style="font-size:8.0pt; font-family:Arial; font-style:normal; font-weight:bold; text-decoration:none;"> You may also incur brokerage commissions and other charges when buying or selling shares of the fund, which are not reflected in the table or example below.</span></p> Shareholder fees (fees paid directly from your investment) 20 0 0 0 0 Annual fund operating expenses (expenses that you pay each year as a percentage of the value of your investment) 0.0032 0.0032 0.0032 0.0032 0.0032 0 0 0.0025 0.0050 0 0.0013 0.0002 0.0025 0.0033 0.0058 0.0045 0.0034 0.0082 0.0115 0.0090 -0.0001 0 0 0 -0.0090 0.0044 0.0034 0.0082 0.0115 0.0000 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 <p style="margin-top:revert; margin-bottom:revert; font-size:8.0pt; font-family:Arial; text-align:left; font-weight:normal; text-decoration:none;">for the time periods indicated and then redeem all of your shares at the end of those periods, that your investment has a 5% return each year, and that the fund’s operating expenses remain the same. The example also assumes that any current expense limitation arrangement remains in place for the period noted in the previous table; therefore, the figures have been adjusted to reflect fee waivers or expense reimbursements only in the periods for which the expense limitation arrangement is expected to continue. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p> 45 143 251 566 35 109 191 431 84 262 455 1014 117 365 633 1398 0 0 0 0 2026-11-02 497 2025-12-31 0000931151 false 2026-11-02 2026-11-02 N-1A ~ http://xbrl.sec.gov/rr/role/ShareholderFeesData row dei_DocumentInformationDocumentAxis compact cik0000931151_S000002071SummaryMember row dei_LegalEntityAxis compact cik0000931151_S000002071Member ~ ~ http://xbrl.sec.gov/rr/role/OperatingExpensesData row dei_DocumentInformationDocumentAxis compact cik0000931151_S000002071SummaryMember row dei_LegalEntityAxis compact cik0000931151_S000002071Member ~ ~ http://xbrl.sec.gov/rr/role/ExpenseExample row dei_DocumentInformationDocumentAxis compact cik0000931151_S000002071SummaryMember row dei_LegalEntityAxis compact cik0000931151_S000002071Member ~ T. Rowe Price U.S. Equity Research Fund, Inc. February 29, 2028 Subject to certain exceptions and account minimums, accounts are charged an annual $20 fee. T. Rowe Price Associates, Inc., has contractually agreed (through February 29, 2028) to waive its fees and/or bear any expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired fund fees and expenses) that would cause the class’ ratio of expenses to average daily net assets to exceed 0.44%. The agreement may only be terminated at any time after February 29, 2028, with approval by the fund’s Board of Directors. Fees waived and expenses paid under this agreement (and any applicable prior limitations) are subject to reimbursement to T. Rowe Price Associates, Inc., by the class whenever the class’ expense ratio is below 0.44%. However, the class will not reimburse T. Rowe Price Associates, Inc., more than three years from the date such amounts were initially waived or paid. The class may only reimburse T. Rowe Price Associates, Inc., if the reimbursement does not cause the class’ expense ratio (after the reimbursement is taken into account) to exceed the class’ current expense limitation (or the expense limitation in place at the time the amounts were waived or paid). T. Rowe Price Associates, Inc., has contractually agreed to waive and/or bear all the Z Class’ expenses (excluding interest; expenses related to borrowings, taxes, and brokerage; nonrecurring, extraordinary expenses; and acquired fund fees and expenses) in their entirety. T. Rowe Price Associates, Inc., expects this fee waiver and/or expense reimbursement arrangement to remain in place indefinitely, and the agreement may only be amended or terminated with approval by the fund’s Board of Directors.