Form10-Q (Mark One) LPL Financial Holdings Inc. (Exact name of registrant as specified in its charter) (I.R.S. Employer Identification No.) Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of RegulationS-T (§232.405 of thischapter) during the preceding 12months (or for such shorter period that the registrant was required to submit such files).YesNo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company.See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule12b-2 of the Exchange Act. Large accelerated filerAccelerated filer☐Non-accelerated filer☐Smaller reporting company☐Emerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financialaccounting standards provided pursuant to Section 13(a) of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).☐YesNo The number of shares of Common Stock, par value $0.001 per share, outstanding as of July30, 2026 was 78,742,290. TABLE OF CONTENTS WHERE YOU CAN FIND MORE INFORMATIONSPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTSGlossary of TermsPART I — FINANCIAL INFORMATION1. Financial Statements (unaudited)Condensed Consolidated Statements of Income (unaudited)Condensed Consolidated Statements of Financial Condition (unaudited)Condensed Consolidated Statements of Stockholders’ Equity (unaudited)Condensed Consolidated Statements of Cash Flows (unaudited)Notes to Condensed Consolidated Financial Statements (unaudited)Note 1 - Organization and Description of the CompanyNote 2 - Summary of Significant Accounting PoliciesNote 3 - RevenueNote 4 - AcquisitionsNote 5 - Fair Value MeasurementsNote 6 - Investment SecuritiesNote 7 - Goodwill and Other Intangibles, NetNote 8 - Other Assets and Other LiabilitiesNote 9 - Corporate Debt and Other Borrowings, NetNote 10 - Commitments and ContingenciesNote 11 - Stockholders’ EquityNote 12 - Share-based CompensationNote 13 - Earnings per ShareNote 14 - Net Capital and Regulatory RequirementsNote 15 - Financial Instruments with Off-Balance Sheet Credit Risk and Concentrations of Credit RiskNote 16 - Segment InformationNote 17 - Subsequent Events2. Management’s Discussion and Analysis of Financial Condition and Results of OperationsBusiness OverviewOur Sources of RevenueSignificant EventsExecutive SummaryKey Performance MetricsLegal and Regulatory MattersEconomic Overview and Impact of Financial Market EventsResults of OperationsLiquidity and Capital ResourcesDebt and Related CovenantsContractual ObligationsRisk ManagementCritical Accounting Policies and Estimates3. Quantitative and Qualitative Disclosures About Market Risk4. Controls and ProceduresPART II — OTHER INFORMATION1. Legal Proceedings1A. Risk Factors2. Unregistered Sales of Equity Securities and Use of Proceeds3. Defaults Upon Senior Securities4. Mine Safety Disclosures5. Other Information6. ExhibitsSIGNATURES Table of Contents WHERE YOU CAN FIND MORE INFORMATION We file annual, quarterly and current reports, proxy statements and other information required by the Securities Exchange Act of 1934, as amended (the “Exchange Act”), with theSecurities and Exchange Commission (“SEC”). Our SEC filings are available to the public on the SEC’s website atsec.gov. We post the following filings to our website at lpl.com as soon as reasonably practicable after they are electronically filed with or furnished to the SEC: our annual reports on Form10-K, our proxy statements, our quarterly reports on Form10-Q, our current reports on Form8-K and any amendments to those reports filed or furnished pursuant to Section13(a) or15(d) of the Exchange Act. Copies of all such filings are available free of charge by request via email (investor.relations@lplfinancial.com),telephone ((617)897-4574) or mail (LPLFinancial Investor Relations at 1055 LPL Way, Fort Mill, SC 29715). The information contained or incorporated on our website is not a part of this Quarterly Report on Form 10-Q. We may use our website as a means of disclosing material information and for complying with our disclosure obligations under Regulation Fair Disclosure promulgated by the SEC.These disclosures are included on our website in the “Investor Relations” or “Press Releases” sections. Accordingly, investors should monitor these portions of our website in additionto following the Company’s press releases, SEC filings, public conference calls and webcasts. When we use the terms “LPLFH,” “LPL,” “we,” “us,” “our” and “the Company,” we mean LPLFinancial Holdings Inc., a Delaware corporation, and its consolidate