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| (1) | Represents expenses related to an arbitration proceeding over a disputed customer contract, which expenses are expected to continue until the arbitration is resolved. |
| (2) | Acquisition-related costs are incremental expenses related to the business or asset acquisition transaction(s). These expenses may include consulting, legal and other fees. For the three and nine months ended September 30, 2023, the charges were related to the acquisition of Lantern Machinery Analytics, Inc. |
| (3) | The difference between the GAAP and non-GAAP income tax provisions is primarily due to the valuation allowance on a GAAP basis and non-GAAP adjustments. For example, on a GAAP basis, the Company does not receive a deferred tax benefit for foreign tax credits or research and development credits after the valuation allowance. The Company’s non-GAAP tax rate and resulting non-GAAP tax expense is not calculated with a full U.S. federal or state valuation allowance due to the Company’s cumulative non-GAAP income and management’s conclusion that it is more likely than not to utilize its net deferred tax assets (DTAs). Each reporting period, management evaluates the need for a valuation allowance and may place a valuation allowance against its U.S. net DTAs on a non-GAAP basis if it concludes it is more likely than not that it will not be able to utilize some or all of its U.S. DTAs on a non-GAAP basis. |
| Company Contacts: | |
| Adnan Raza | Sonia Segovia |
| Chief Financial Officer | Investor Relations |
| Tel: (408) 516-0237 | Tel: (408) 938-6491 |
| Email: adnan.raza@pdf.com | Email: sonia.segovia@pdf.com |
