Inventory sold
For the year ended September 30, 2024, inventory sold totaled $68,925,000 versus $57,897,000 for the year ended September 30, 2023. The increase in dollars was due to the growth in revenues but increased by a larger percentage than revenues due to a higher mix of sales of medical equipment and supplies relative to total revenue.
For the three months ended September 30, 2024, inventory sold totaled $17,924,000 versus $16,283,000 for the three months ended September 30, 2023. The increase in dollars was due to the growth in revenues but increased by a larger percentage than revenues due to a higher mix of sales of medical equipment and supplies relative to total revenue.
Operating expenses
For the year ended September 30, 2024, operating expenses were $122,542,000, an increase of $19,318,000 from $103,224,000 for the year ended September 30, 2023. The full year impact of the acquisitions during the year ended September 30, 2023, contributed approximately $8,600,000 of the increase. Professional fees related to the CID and the loss in foreign private issuer status contributed $3,298,000, with other increases primarily related to payroll and outbound freight related to the resupply business.
For the three months ended September 30, 2024, operating expenses were $31,446,000, an increase of $2,755,000 from $28,691,000 for the three months ended September 30, 2023. Professional fees related to the CID and the loss of foreign private issuer status contributed $1,093,000, and the full three-month impact of the acquisition during the three months ended September 30, 2023, contributed approximately $600,000. Other increases primarily related to payroll and outbound freight related to the resupply business.
Right-of-use operating lease amortization and interest
Right-of-use operating lease amortization and interest increased to $5,974,000 for the year ended September 30, 2024 from $5,131,000, or 16.4% for the year ended September 30, 2023. The increase was primarily due to the full year impact of the acquisitions during the year ended September 30, 2023.
Right-of-use operating lease amortization and interest decreased slightly to $1,362,000 for the three months ended September 30, 2024 from $1,450,000 for the three months ended September 30, 2023.
Depreciation expense
Depreciation expense increased by $7,589,000 to $38,490,000 for the year ended September 30, 2024. This increase is due to the full year impact of the acquisitions during the year ended September 30, 2023 and other increases to property, equipment, and right-of-use assets.
Depreciation expense increased by $533,000 to $10,016,000 for the three months ended September 30, 2024. This increase is due to the full three-month impact of the acquisition during the three months ended September 30, 2023 and other increases to property, equipment, and right-of-use assets.
Stock-based compensation
Stock-based compensation decreased by $2,796,000 to approximately $2,484,000 for the year ended September 30, 2024 due to timing of the vesting of the grants of restricted stock units and stock options during the years ended September 30, 2024 and 2023 and no new awards being granted during the year ended September 30, 2024.
Stock-based compensation decreased by $1,038,000 to approximately $330,000 for the three months ended September 30, 2024 due to timing of the vesting of the grants of restricted stock units and stock options during the quarters ended September 30, 2024 and 2023 and no new awards being granted during the year ended September 30, 2024.