Non-cash stock based compensation expense, included in personnel costs before reimbursable expenses was $1.6 million and $11.5 million during the quarter and first nine months of 2025, respectively, as compared to $2.1 million and $5.2 million in the same periods, respectively. The increase in the first nine months of 2025 was primarily related to increased non-cash stock compensation from the stock price award program issuances (Note 7), partially offset by lower acquisition related non-cash stock compensation expense (Note 1 and Note 7).
Selling, General and Administrative Costs (“SG&A”). SG&A primarily consists of salaries, benefits and incentive compensation for the selling, marketing, administrative and executive employees, non-cash stock based compensation expense and various other overhead expenses.
SG&A costs were $21.2 million and $68.0 million, for the third quarter and first nine months of 2025, respectively, as compared to $18.7 million and $55.0 million for the same periods in 2024, respectively. This increase in the costs during the third quarter and first nine months of 2025 was primarily due to increased non-cash stock based compensation from the stock price award program issuances (Note 7). SG&A costs as a percentage of total Company revenue were 29% and 30% during the third quarter and first nine months of 2025, respectively, as compared to 23% during each of the same periods in 2024, respectively.
Non-cash stock based compensation expense, included in SG&A, was $4.3 million and $13.8 million during the third quarter and first nine months of 2025, respectively, as compared to $1.7 million and $4.1 million for the same periods in 2024, respectively. The increase in the third quarter and first nine months of 2025 primarily relates to the non-cash stock compensation expense from the stock price award program issuances (Note 7).
Amortization expense was $0.3 thousand and $0.7 thousand for the third quarter and first nine months of 2025, respectively, which was related to the intangible assets acquired in our September 2024 acquisition of LeewayHertz and May 2025 acquisition of Spend Matters. There was no intangible amortization for the same periods in 2024.
Restructuring Costs. During the third quarter of 2025, we incurred restructuring costs of $3.1 million as a result of the continued pivot of our business to Gen AI. These costs were primarily employee related costs, as the Company reduced staff to be commensurate with current market demand and the leverage of our Gen AI delivery platforms are expected to have on our service offerings.
Segment Contribution. Segment contribution consists of the revenue generated by the segment, less the direct costs of revenue and selling, general and administrative expenses that are incurred directly by the segment. Items not allocated to the segment level include corporate costs related to the administrative functions that are performed in a centralized manner and that are not attributable to a particular segment. These administrative function costs include corporate general and administrative expenses, non-cash compensation, depreciation expense, interest expense and legal settlement and related costs.
Global S&BT segment contribution was $13.2 million and $39.0 million during the third quarter and first nine months of 2025, respectively, as compared to $14.1 million and $37.0 million for the same periods in 2024, respectively. The growth from our Gen AI consulting and implementation offerings in this segment was more than offset by weakness in our OneStream implementation offerings and the non-renewal of a meaningful IPaaS in the third quarter of 2025, as mentioned above.
Oracle Solutions segment contribution was $2.7 million and $11.5 million during the third quarter and first nine months of 2025, respectively, as compared to $5.5 million and $16.2 million for the same periods in 2024, respectively. The decrease during the third quarter and first nine months of 2025 was primarily due to decreased revenue, as discussed above, partially offset by decreased incentive compensation accruals related to performance.
SAP Solutions segment contribution was $3.7 million and $11.8 million during both the third quarter and first nine months of 2025 and 2024, respectively.
Legal Settlement and Related Costs. In May 2023, Gartner, Inc. ("Gartner") filed a lawsuit seeking a preliminary injunction and damages against the Company and two ex-Gartner employees that were hired by us. On February 17, 2024, we, Gartner and the two ex-Gartner employees entered into a settlement agreement whereby we made a settlement payment of $985,000 to Gartner in exchange for a dismissal of the lawsuit and a release of all claims which is reflected in our Consolidated Statement of Operations for the year ended December 27, 2024. In addition, we incurred incremental legal costs related to the settlement which were recorded as expense in the period incurred.
Interest Expense, Net. Interest expense, net was $0.4 million and $1.0 million during the third quarter and first nine months of 2025, respectively, as compared to $0.4 million and $1.4 million in the same periods in 2024, respectively. As of September 26, 2025, we had outstanding debt of $44.0 million, excluding debt issue costs. As of September 27, 2024, we had outstanding debt of $20.0 million, excluding debt issue costs.