
	June 30, 2026		December 31, 2025
Land	$	795	$	1,134
Buildings and leasehold improvements	7,117		9,070
Transportation	2,217		2,023
Machinery and equipment	14,101		12,750
Gross property and equipment	24,230		24,977
Accumulated depreciation	(7,632)		(6,367)
Total property and equipment, net	$	16,598	$	18,610

As of June 30, 2026, we held non-operating land and a building in Oxford, Maine for investment and potential future use which had a carrying value of $1,701 and was included within property and equipment on the Condensed Consolidated Balance Sheets.

Within our Building Solutions segment, KBS provides a limited assurance warranty on its residential homes that covers substantial defects in materials or workmanship for a period of 12 months after delivery to the owner. EdgeBuilder provides a limited warranty on the sale of its wood foundation products that covers leaks resulting from defects in workmanship for a period of twenty-five years. TT provides a fifty-year limited warranty to the original buyer of its products, qualified by the original buyer’s obligation to ensure that the products are properly handled, stored, and installed. Historical losses related to the Timber Technologies warranty have been insignificant and therefore no reserve has been established. Estimated future warranty costs are accrued and charged to cost of goods sold in the period that the related revenue is recognized. Within our Energy Services segment, we do not provide warranties on our products.

Notes receivable consists of the following principal and interest balances as of June 30, 2026 and December 31, 2025:


	June 30, 2026		December 31, 2025
	Principal and interest		Principal and interest
Catalyst Note	$	8,725	$	8,257

MDOS Note	447		596
KBS Customer Note	12		32
Total note receivable	9,184		8,885
Less current portion	(236)		(256)
Note receivable, net of current portion	$	8,948	$	8,629

As a part of the sale of Digirad Health in May 2023, SOC entered into a $7,000 promissory note (the “Catalyst Note”) which represents an unsecured note receivable on our balance sheet. The note has a maturity date of May 3, 2029 with payment-in-kind (non-cash) interest on the outstanding principal balance hereof to accrue at the Interest Rate. The full balance is scheduled to be paid at the maturity date. The Interest Rate is defined as (i) during the period from the date of issuance of the note through the third anniversary of the date of issuance of the note, a per annum rate equal to the sum of (x) 5.0% per annum plus (y) the greater of 5.0% per annum and the weighted average term SOFR-based interest rate of outstanding loans under the Senior Loan Agreement (as defined in the Purchase Agreement) during such period, and (ii) during the period following the third anniversary of the date of issuance of the note, a per annum rate equal to the sum of (x) 5.0% per annum plus (y) the

In 2021, SOC completed the sale of MD Office Solutions in exchange for a secured promissory note (the “MDOS Note”). This note, the principal of which is approximately $447 at June 30, 2026, is included in “Notes receivable, net of current portion” and “Notes receivable” in our Condensed Consolidated Balance Sheets at June 30, 2026 and December 31, 2025 for $223 and $224, respectively. The MDOS Note requires quarterly installments of $74 and incurs interest at a fixed rate of 5.0% through maturity in 2028.

In 2023, KBS issued a promissory note to a customer, incurring 12% interest per annum (the “KBS Customer Note”). The KBS Customer Note is included in “Notes receivable, net of current portion” in the Condensed Consolidated Balance Sheets at June 30, 2026.

As a part of the sale of Digirad Health, SOC received common equity of Catalyst Parent, which is held in our Investments Segment at a fair value of $953 at June 30, 2026. We have elected the measurement alternative under ASC 321, Investments-Equity Securities. The measurement alternative election allows for equity securities that do not have readily determinable fair values to be recorded at cost, with adjustments for impairment and certain observable price changes reflected in earnings. Such securities are adjusted to fair value when an observable price change occurs or impairment is identified.

On August 9, 2024, SOC entered into an investment in Enservco pursuant to a Share Exchange Agreement in which SOC agreed to issue to Enservco 250,000 shares of 10% Series A Cumulative Perpetual Preferred Stock representing $2,600 of value in exchange for 9,023,035 Enservco Common Shares, representing 19.9% of the equity interests of Enservco, and 3.5 million Enservco Preferred Shares and certain options included in the Share Exchange Agreement. We also issued a $1,000 note to Enservco to facilitate Enservco’s acquisition of Buckshot Trucking, LLC. The investment in Enservco had a value of zero at June 30, 2026.