☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number:001-38864 ALTA EQUIPMENT GROUP INC.(Exact name of registrant as specified in its charter) 83-2583782(IRS EmployerIdentification No.) Delaware(State or other jurisdictionof incorporation or organization) 13211 Merriman Road, Livonia, Michigan 48150(Address of principal executive offices)(Zip Code) (248) 449-6700(Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities ExchangeAct of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has beensubject to such filing requirements for the past 90 days.YES☒NO☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant toRule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was requiredto submit such files).YES☒NO☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reportingcompany, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and“emerging growth company” in Rule 12b-2 of the Exchange Act. Large accelerated filer☐Accelerated 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 complyingwith any new or revised financial accounting 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).YES☐NO☒ As of May 5, 2026, there were 32,535,540 shares of Common Stock, $0.0001 par value, and 1,200 shares of Preferred Stock, $0.0001 par value,which Preferred Stock is evidenced by 1,200,000 depositary shares, outstanding. INDEX Page PART I – FINANCIAL INFORMATIONCondensed Consolidated Interim Financial Statements (Unaudited) Item 1.Condensed Consolidated Balance Sheets (Unaudited)Condensed Consolidated Statements of Operations (Unaudited)Condensed Consolidated Statements of Comprehensive Loss (Unaudited)Condensed Consolidated Statements of Stockholders' Equity (Unaudited)Condensed Consolidated Statements of Cash Flows (Unaudited)Notes to Unaudited Condensed Consolidated Financial StatementsNote 1.Organization and Nature of OperationsNote 2.Summary of Significant Accounting PoliciesNote 3.Revenue RecognitionNote 4.Related Party TransactionsNote 5.InventoriesNote 6.Property and Equipment and Rental FleetNote 7.Goodwill and Other Intangible AssetsNote 8.Floor PlansNote 9.Long-Term DebtNote 10.LeasesNote 11.ContingenciesNote 12.Income TaxesNote 13.Stock-Based CompensationNote 14.Fair Value of Financial InstrumentsNote 15.DivestitureNote 16.SegmentsNote 17.Earnings Per ShareItem 2.Management’s Discussion and Analysis of Financial Condition and Results of OperationsItem 3.Quantitative and Qualitative Disclosures About Market RiskItem 4.Controls and ProceduresPART II - OTHER INFORMATION Item 1.Legal ProceedingsItem 1A.Risk FactorsItem 2.Unregistered Sales of Equity Securities and Use of ProceedsItem 3.Defaults Upon Senior SecuritiesItem 4.Mine Safety DisclosuresItem 5.Other InformationItem 6.ExhibitsSignature Cautionary Note Regarding Forward-Looking Statements Certain statements contained in this Form 10-Q may be considered “forward-looking statements” as that term is defined in thePrivate Securities Litigation Reform Act of 1995. The forward-looking statements contained herein are subject to known andunknown risks, uncertainties, assumptions and other factors that may cause our actual results, performance, or achievements to bematerially different from those expressed or implied by any such forward-looking statements. Forward-looking statements include,but are not limited to, statements that refer to projections, forecasts or other characterizations of future events or circumstances,including any underlying assumptions. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intends,”“may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “would” and similar expressions may identifyforward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. Forward-lookingstatements may include, for example, statements about: our future financial performance; our plans for expans