Omnicell Investor Presentation Deck

Reconciliation of GAAP net income (loss) to non-GAAP EBITDA (¹): GAAP net income (loss) Share-based compensation expense Interest (income) and expense, net Depreciation and amortization expense Acquisition accounting impact related to deferred revenues Acquisition-related expenses Impairment and abandonment of operating lease right-of-use and other assets related to facilities Ransomware-related expenses, net of insurance recoveries Severance-related and other expenses Amortization of debt issuance costs Provision for (benefit from) income taxes Non-GAAP EBITDA Omnicell, Inc. Reconciliation of GAAP to Non-GAAP (Unaudited, in thousands, except per share data and percentage) © 2023 Omnicell, Inc. Three Months Ended March 31, 2023 S S (15,000) $ 14,042 (3,074) 21,974 Three Months Ended December 31, 2022 246 8.420 5,314 1,045 (6,182) 26,785 S Three Months Ended September 30, 2022 (28,408) S 17,516 (2,410) 22,088 40 246 3,992 73 18,782 1,043 (7,106) 25,856 $ Three Months Ended June 30, 2022 16,774 S 17,310 (1,136) 21,826 183 251 297 1,027 2,494 1,042 543 60,611 S (3) Defined as earnings before interest income and expense, taxes, depreciation, amortization, and share-based compensation, as well as excluding certain other non-GAAP adjustments. 9,069 17,213 (142) 21,893 302 263 3,340 1,374 1,041 1,705 56,058 Year Ended December 31, 2017 S S 30,518 21,857 6,072 51,511 1,252 1,715 4,752 (26,006) 91,671 25

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