BOSTON OMAHA Corp

For the Years Ended December 31, 2025 and 2024

Boston Omaha Corporation ("Boston Omaha," the "Company," "we," "us," and "our") was organized on* August 11, 2009with present management taking over operations in February 2015.*Our operations include (i) our outdoor advertising business with multiple billboards across Alabama, Arkansas, Florida, Georgia, Illinois, Iowa, Kansas, Missouri, Nebraska, Nevada, Oklahoma, South Dakota, Tennessee, Virginia, West Virginia, and Wisconsin; (ii) our insurance business that specializes in surety bond underwriting and brokerage; (iii) our broadband business that provides high-speed broadband services to its customers, (iv) our asset management business, and (v) our minority investments primarily in real estate, real estate services, private aviation infrastructure, and banking. Our billboard operations are conducted through our subsidiary, Link Media Holdings, LLC, our insurance operations are conducted through our subsidiary, General Indemnity Group, LLC, our broadband operations are conducted through our subsidiary, Boston Omaha Broadband, LLC, and our asset management operations are conducted through our subsidiary, Boston Omaha Asset Management, LLC.

We completed an acquisition of an outdoor advertising business and entered the outdoor advertising industry on* June 19, 2015.From2015* through2025, we have completed more thantwenty additional acquisitions of outdoor advertising businesses.

On* April 20, 2016,we completed an acquisition of a surety bond brokerage business. On December 7, 2016,we acquired a fidelity and surety bond insurance company. From2017* through2025, we completedfour additional acquisitions of surety brokerage businesses.

On* March 10, 2020,we completed the acquisition of a rural broadband internet provider located in Arizona. On December 29, 2020,we completed the acquisition of asecond* broadband internet provider located in Utah. On* April 1, 2022,we completed the acquisition of ourthird* broadband internet provider located in Utah.

On* September 25, 2020,we filed a Registration Statement on Form S-1 with the Securities and Exchange Commission for a proposed initial public offering of units of a special purpose acquisition company, which we refer to as the “SPAC,” named Yellowstone Acquisition Company, which we refer to as “Yellowstone.” Yellowstone completed its initial public offering on October 26, 2020and on January 25, 2022completed a business combination with Sky Harbour Group and Yellowstone changed its name to Sky Harbour Group Corporation (see Note8* for further discussion).

F-13

Consolidation Policy

The financial statements of Boston Omaha Corporation include the accounts of the Company and our consolidated subsidiaries, which are comprised of voting interest entities in which we have a controlling financial interest and variable interest entities for which we have determined that we are the primary beneficiary. All intercompany profits, losses, transactions, and balances have been eliminated in consolidation.

Variable Interest Entities (VIEs)

We determine whether an entity is a VIE and, if so, whether it should be consolidated by utilizing judgments and estimates that are inherently subjective. Our determination of whether an entity in which we hold a direct or indirect variable interest is a VIE is based on several factors, including whether the entity’s total equity investment at risk upon inception is sufficient to finance the entity’s activities without additional subordinated financial support. We make judgments regarding the sufficiency of the equity at risk basedfirst on a qualitative analysis, and then a quantitative analysis, if necessary.

We analyze any investments in VIEs to determine if we are the primary beneficiary. In evaluating whether we are the primary beneficiary, we evaluate our direct and indirect economic interests in the entity. A reporting entity is determined to be the primary beneficiary if it holds a controlling financial interest in the VIE. Determining which reporting entity, if any, has a controlling financial interest in a VIE is primarily a qualitative approach focused on identifying which reporting entity has both: (i) the power to direct the activities of a VIE that most significantly impact such entity’s economic performance; and (ii) the obligation to absorb losses or the right to receive benefits from such entity that could potentially be significant to such entity. Performance of that analysis requires the exercise of judgment.

We consider a variety of factors in identifying the entity that holds the power to direct matters that most significantly impact the VIE’s economic performance including, butnot limited to, the ability to direct operating decisions and activities. In addition, we consider the rights of other investors to participate in those decisions. We determine whether we are the primary beneficiary of a VIE at the time we become involved with a variable interest entity and reconsider that conclusion continually.

We consolidate any VIE of which we are the primary beneficiary. Such VIEs consist of24th Street Fund I and24th Street Fund II, collectively “the24th Street Funds,” and Fund One Boston Omaha Build for Rent LP, which we refer to as "BFR".

Total assets of the consolidated VIEs included within our Consolidated Balance Sheets were approximately $32,000,000 and $49,000,000 as of* December 31,2025 and December 31,2024, respectively. Total liabilities of the consolidated VIEs included within our Consolidated Balance Sheets were approximately $1,900 and $27,000 as of December 31,2025 and December 31,2024, respectively. As of December 31,2025 and December 31,2024, the aggregate fair value of the24th Street Funds’ and BFR's investments in special purpose entities was approximately$24,000,000 and$47,000,000, respectively. During2025, the24th Street Funds’ and BFR's investments in special purpose entities recognized other investment loss of approximately $6,900,000 and distributions to the funds of approximately $11,300,000. During2024, the24th Street Funds’ and BFR's investments in special purpose entities recognized other investment income of approximately $8,000,000 and distributions to the funds of approximately $26,000,000. The assets of the consolidated VIEs may*only be used to settle obligations of the same VIE.

Our consolidated subsidiaries include:

Link Media Holdings, LLC which we refer to as “LMH”

Link Media Alabama, LLC which we refer to as “LMA”

Link Media Florida, LLC which we refer to as “LMF”

Link Media Wisconsin, LLC which we refer to as “LMW”

Link Media Georgia, LLC which we refer to as “LMG”

Link Media Midwest, LLC which we refer to as “LMM”

Link Media Omaha, LLC which we refer to as “LMO”

Link Media Properties, LLC which we refer to as “LMP”

Link Media Southeast, LLC which we refer to as “LMSE”

Link Media Services, LLC which we refer to as “LMS”

Link Billboards Oklahoma, LLC which we refer to as “LBO”

General Indemnity Group, LLC which we refer to as “GIG”

United Casualty and Surety Insurance Company which we refer to as “UCS”

BOSS Bonds Insurance Agency, Inc., which we refer to as "BOSS Bonds", formerly known as South Coast Surety Insurance Services, LLC which we refer to as “SCS”

Boston Omaha Investments, LLC which we refer to as “BOIC”

Boston Omaha Asset Management, LLC which we refer to as “BOAM”

Fund One Boston Omaha Build for Rent LP which we refer to as “BFR”

BOAM BFR, LLC which we refer to as “BOAM BFR”

BOC Business Services, LLC which we refer to as “BBS”

BOC Yellowstone, LLC which we refer to as “BOC Yellowstone”

BOC Yellowstone II, LLC which we refer to as “BOC Yellowstone II”

24th Street Asset Management LLC which we refer to as*“24th* Street”

24th Street Fund I, LLC which we refer to as*“24th* Street Fund I”

24th Street Fund II, LLC which we refer to as*“24th* Street Fund II”

Boston Omaha Broadband, LLC which we refer to as “BOB”

FIF AireBeam, LLC which we refer to as “AireBeam”

Fiber Fast Homes, LLC which we refer to as “FFH”

FIF Utah, LLC which we refer to as “FIF Utah”

FIF St George, LLC which we refer to as “FIF St George” or "InfoWest"

F-14

Cash and Cash Equivalents

For purposes of the statement of cash flows, we consider all highly liquid investments, with the exception of U.S. Treasury securities, purchased with an original maturity ofthree months or less to be cash equivalents.

Cash Held by BOAM Funds and Other

Cash held by BOAM funds and other represents cash and cash equivalents held by consolidated BOAM Funds and other consolidated entities. Such amounts arenot available to fund the general liquidity needs of Boston Omaha.

Accounts Receivable

Billboard Rentals

Accounts receivable are recorded at the invoiced amount, net of advertising agency commissions, sales discounts, and allowances for credit losses. We evaluate the collectability of accounts receivable based on our knowledge of our customers and historical experience of credit losses. In circumstances where we are aware of a specific customer’s inability to meet its financial obligations, we record a specific allowance to reduce the amounts recorded to what we believe will be collected. For all other customers, we recognize reserves for credit losses based upon historical experience of credit losses as a percentage of revenue, adjusted for relative improvement or deterioration and changes in current economic conditions.

Broadband

Accounts receivable are recorded at the invoiced amount, net of allowances for credit losses. We evaluate the collectability of accounts receivable based on our knowledge of our customers and historical experience of credit losses. In circumstances where we are aware of a specific customer’s inability to meet its financial obligations, we record a specific allowance to reduce the amounts recorded to what we believe will be collected.

Insurance

Accounts receivable consists of premiums, anticipated salvage, and reinsurance receivables. All the receivables have payment terms of less thantwelve months.

Anticipated salvage is the amount we expect to receive from principals pursuant to indemnification agreements.

Credit Losses

We estimate credit losses on financial instruments based on amounts expected to be collected. The allowance for credit losses is estimated based on historical collections, accounts receivable aging, economic indicators, and expected future trends.

F-15

Deferred Policy Acquisition Costs

Policy acquisition costs consist primarily of commissions to agents and brokers and premium taxes, fees, and assessments. Such costs that are directly related to the successful acquisition of new or renewal insurance contracts are deferred and amortized over the related policy period, generallyone tothree years. The recoverability of these costs is analyzed by management quarterly, and if determined to be impaired, is charged to expense. We donot consider anticipated investment income in determining whether a premium deficiency exists. All other acquisition expenses are charged to operations as incurred.

Property and Equipment

Property and equipment are carried at cost less depreciation. Depreciation is provided principally on the straight-line method over the estimated useful lives of the assets, which range from four years totwenty years as follows:

Maintenance and repair costs are charged against income as incurred. Significant improvements or betterments are capitalized and depreciated over the estimated life of the asset.

Periodic internal reviews are performed to evaluate the reasonableness of the depreciable lives for property and equipment. Actual usage, physical wear and tear, replacement history, and assumptions about technology evolution are reviewed and evaluated to determine the remaining useful lives of the assets. Remaining useful life assessments are made to anticipate the loss in service value that* may*precede physical retirement, as well as the level of maintenance required for the remaining useful life of the asset.

Property and equipment is reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset* may**not* be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset or asset group before interest expense. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset or asset group. Assets to be disposed of would be separately presented in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell and wouldno longer be depreciated. The assets and liabilities of a disposed group classified as held for sale would be presented separately in the appropriate asset and liability sections of the balance sheet.

Acquisitions

For transactions that meet the definition of a business combination, we allocate the purchase price, including any contingent consideration, to the assets acquired and the liabilities assumed at their estimated fair values as of the date of the acquisition with any excess of the purchase price paid over the estimated fair value of net assets acquired recorded as goodwill. The determination of the final purchase price and the acquisition-date fair value of identifiable assets acquired and liabilities assumed* mayextend over more thanone* period and result in adjustments to the preliminary estimate recognized in the prior period financial statements. For transactions which meet the definition of asset purchases, we proportionally allocate the purchase price to the assets based on their relative fair values acquired and the liabilities assumed at their estimated fair values as of the date of the acquisition.

The fair value of the assets acquired and liabilities assumed is typically determined by using either estimates of replacement costs or discounted cash flow valuation methods. When determining the fair value of tangible assets acquired, we estimate the cost to replace the asset with a new asset, adjusted for an estimated reduction in fair value due to age of the asset, and the economic useful life. When determining the fair value of intangible assets acquired, we estimate the applicable discount rate and the timing and amount of future cash flows. Key assumptions utilized in estimating the future cash flows expected to be generated by each reporting unit primarily relate to forecasted revenues and premiums earned.

Goodwill

Goodwill represents future economic benefits arising from other assets acquired in a business combination that arenot individually identified and separately recognized. Goodwill is subject to an annual impairment test. We designated* October 1as the date of our annual goodwill impairment test. We are required to identify our reporting units and determine the carrying value of each reporting unit. We analyze financial information of our operations to identify discrete segments that constitute a reporting unit. We assign assets acquired and liabilities assumed in business combinations to those reporting units. We have identified four reporting units: billboard operations, broadband operations, insurance brokerage and insurance carrier operations, and asset management operations. We are required to determine the fair value of each reporting unit and compare it to the carrying amount of the reporting unit. To the extent the carrying amount of a reporting unit exceeds the fair value of the reporting unit, we would be required to book an impairment loss. For our annual review of reporting units, we employ athird* party valuation expert.

F-16

Goodwill** (Continued)**

We conduct a qualitative assessment by examining relevant events and circumstances which could have a negative impact on our goodwill, including macroeconomic conditions, industry and market conditions, cost factors, overall financial performance, reporting unit dispositions and acquisitions, our market capitalization, and other relevant events specific to us. If, after assessing the totality of events or circumstances described above, we determine that it is more likely thannot that the fair value of a reporting unit is less than its carrying amount, we will perform a quantitative impairment test. If industry and economic conditions deteriorate, we* may*be required to assess goodwill impairment before the next annual test, which could result in impairment charges. The fair value of each of our goodwill reporting units is generally estimated using a combination of public company multiples and discounted cash flow methodologies. The discounted cash flow approach that we use for valuing goodwill as part of the impairment testing approach involves estimating future cash flows expected to be generated from the related assets, discounted to their present value using a risk-adjusted discount rate.

We performed our annual measurement for impairment of the goodwill of our reporting units and concluded the fair value of each reporting unit exceeded its carrying amount at its annual impairment test date on each of* October 1,*2025 and2024; therefore, we werenot required to recognize an impairment loss.

We didnot complete any acquisitions during2025 or2024 sono additional goodwill has been recorded since2023.

Purchased Intangibles and Other Long-Lived Assets

We amortize intangible assets with finite lives over their estimated useful lives, which range between five andfifty years as follows:

Purchased intangible assets, including long-lived assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets* may**not* be fully recoverable. Factors considered in reviewing the asset values include consideration of the use of the asset, the expected life of the asset, and regulatory or contractual provisions related to such assets. Market participation assumptions are compared to our experience and the results of the comparison are evaluated. For finite-lived intangible assets, the period over which the assets are expected to contribute directly to future cash flows is evaluated against our historical experience. Impairment losses are recognized only if the carrying amount exceeds its fair value.

Asset Retirement Obligations

We are required to record the present value of obligations associated with the retirement of tangible long-lived assets in the period in which the obligation is incurred. The liability is capitalized as part of the long-lived asset’s carrying amount. With the passage of time, accretion of the liability is recognized as an operating expense and the capitalized cost is depreciated over the expected useful life of the related asset. Our asset retirement obligations relate to the dismantlement, removal, site reclamation, and similar activities related to the decommissioning of our billboard structures and broadband towers.

F-17

Investments, Short-term and Long-term

Investments include U.S Treasury securities, marketable equity securities, and equity investments as discussed below. U.S. Treasury securities held by our insurance entities are classified as held-to-maturity and are accounted for at amortized cost. We have both the intent and ability to hold the securities to maturity. U.S. Treasury securities held by non-insurance entities are classified as trading securities and are accounted for at fair value. Unrealized holding gains and losses during the period are included in Other investment income. Marketable equity securities are stated at fair value. Dividend and interest income are recognized when earned. Realized investment gains and losses are included in Other investment income.

Equity** Investment****s**

Our equity investments consist of investment inthree private companies in which we donot have the ability to exercise significant influence over their operating and financial activities. These investments are carried at cost as there isno market for the capital stock, accordingly,no quoted market price is available. The investments are tested for impairment, at least annually, and more frequently upon the occurrences of certain events. In accordance with ASC321, we use the measurement alternative, defined as cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for identical or similar investments of the same issuer.

Investments in Unconsolidated Entities

We account for investments where we have significant influence but donot have a controlling interest, typically ownership of less than50% and more than20%, using the equity method of accounting. In accordance with ASC323-30, we account for investments in limited partnerships and limited liability companies using the equity method of accounting when our investment is more than minimal (greater than3% to5%). Our share of income (loss) of such entities is recorded as a single amount as equity in income (loss) of unconsolidated affiliates. Dividends, if any, are recorded as a reduction of the investment.

We monitor our equity method investments for factors indicating other-than-temporary impairment. We consider several factors when evaluating our investments, including, butnot limited to, (i) the period of time for which the fair value has been less than the carrying value, (ii) operating and financial performance of the investee, (iii) the investee’s future business plans and projections, (iv) discussions with their management, and (v) our ability and intent to hold the investment until it recovers in value.

Retention of Specialized Accounting

Each of the24th Street Funds, and Fund One Boston Omaha Build for Rent LP qualify as investment companies and apply specialized industry accounting. We report fund investments on our Consolidated Balance Sheets at their estimated fair value with gains (losses) resulting from changes in fair value reflected within ‘Other investment income’ in the accompanying Consolidated Statements of Operations. Accordingly, the accompanying consolidated financial statements reflect different accounting policies for investments depending on whether ornot they are held through a consolidated investment company.

Funds Held as Collateral Assets

Funds held as collateral assets consist principally of cash collateral received from principals, as well as U.S. Treasury Securities purchased with an original maturity ofthree months or less from cash collateral received, to guarantee performance on surety bonds issued by us, as well as all other contractual obligations of the principals to the surety.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.

The more significant areas requiring the use of management estimates relate to allocation of asset acquisition price between tangible and intangible assets, useful lives for depreciation, amortization, and accretion, impairment of goodwill, valuation of insurance loss reserves, and the valuation of deferred tax assets and liabilities. Accordingly, actual results could differ from those estimates.

Fair Value Measurements

We determine the fair value of our financial instruments using the fair value hierarchy, which requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value.

F-18

Revenue****s

The majority of our advertising revenues are derived from contracts for advertising space on billboard structures and broadband internet services and are accounted for under Financial Accounting Standards Board Accounting Standards Codification606**, Revenue from Contracts with Customers ("ASC606"),and under ASC842, *Leases.*We refer to the Financial Accounting Standards Board as the "FASB" and Accounting Standards Codification as "ASC."

Premium revenues derived from our insurance operations are subject to ASC944, Financial Services – Insurance.

Revenue Recognition

Billboard Rentals

We generate revenue from outdoor advertising through the leasing of advertising space on billboards. The terms of the contracts range from less thanone month tothree years and are generally billed monthly. Revenue for advertising space rental is recognized on a straight-line basis over the term of the contract. Advertising revenue is reported net of agency commissions. Agency commissions are calculated based on a stated percentage applied to gross billing revenue for operations. Payments received in advance of being earned are recorded as deferred revenue.

Another component of billboard rentals consists of production services which include creating and printing advertising copy. Contract revenues for production services are accounted for under ASC606. Revenues are recognized at a point in time upon satisfaction of the contract, which is typically less thanone week.

The Company is utilizing the following practical expedients and exemptions from ASC606: We generally expense sales commissions when incurred because the amortization period isone year or less. These costs are recorded within costs of billboard revenues exclusive of depreciation and amortization. We donot disclose the value of unsatisfied performance obligations as the majority of our contracts with customers have an original expected length of less thanone year. For contracts with customers which exceedone year, the future amount to be invoiced to the customer corresponds directly with the value to be received by the customer.

Deferred Revenues

We record deferred revenues when cash payments are received in advance of being earned or when we have an unconditional right to consideration before satisfying our performance obligation. The term between invoicing and when a payment is due isnot significant. For certain services we require payment before the product or services are delivered to the customer. The balance of deferred revenue is considered short-term and will be recognized in revenue withintwelve months.

F-19

Revenue Recognition (Continued)

Broadband Revenues

Broadband revenue is derived principally from internet services and is recognized on a straight-line basis over the term of the contract in the period the services are rendered. Revenue received or receivable in advance of the delivery of services is included in deferred revenue.

Surety Bond Sales

Premiums and Unearned Premium Reserves

Premiums written are recognized as revenues based on a pro-rata daily calculation over the respective terms of the policies in-force. The cost of reinsurance ceded is initially written as prepaid reinsurance premiums and is amortized over the reinsurance contract period in proportion to the amount of insurance protection provided. Premiums ceded of approximately $5,900,000 and $4,300,000 for the years ended* December 31,*2025 and2024, respectively, are included within “Premiums earned” in our Consolidated Statements of Operations.

Commissions

We generate revenue from commissions on surety bond sales and account for commissions under ASC606. Insurance commissions are earned from various insurance companies based upon our agency agreements with them. We arrange with various insurance companies for the provision of a surety bond for entities that require a surety bond. The insurance company sets the price of the bond. The contract with the insurance company is fulfilled when the bond is issued by the insurance agency on behalf of the insurance company. The insurance commissions are calculated based upon a stated percentage applied to the gross premiums on bonds. Commissions are recognized at a point in time, on a bond-by-bond basis as of the policy effective date and are generally nonrefundable.

Right of Use Assets and Lease Liabilities

Right of use, which we refer to as “ROU," assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. The present value of lease payments is determined primarily using the incremental borrowing rate based on the information available at the lease commencement date. We have electednot to recognize ROU assets and lease liabilities for short-term leases for all classes of underlying assets. Short-term leases are leases with terms greater than1 month, but less than12 months.

Unpaid Losses and Loss Adjustment Expenses

Unpaid losses and loss adjustment expenses represent estimates for the ultimate cost of unpaid reported and unreported claims incurred and related expenses. We involve an independent,third-party actuary to assist us in the estimation of reserves for losses and loss adjustment expenses. Estimates are based on paid and incurred loss development factors and expected loss ratios, which are primarily driven by historical claims paid and incurred data and consideration of the level of premiums written during the current and prior years. Since the reserves are based on estimates, the ultimate liability* may*differ from the estimated reserve. The effects of changes in estimated reserves are included within cost of insurance revenues in our consolidated results of operations in the period in which the estimates are updated.

Segment Information

Operating segments are defined as the components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance.

Our current operations for the years ended* December 31, 2025and2024* include the outdoor billboard advertising industry, the broadband services industry, the insurance industry, and the asset management industry.

F-20

Earnings Per Share

Basic income (loss) per common share is computed by dividing the net income (loss) available to Class A common stockholders and Class B common stockholders by the weighted average number of Class A common and Class B common shares outstanding during the year. Diluted earnings per share reflect the potential dilution of securities that could share in earnings of an entity. In a loss year, dilutive common equivalent shares are excluded from the loss per share calculation as the effect would be anti-dilutive. For the year ended* December 31, 2025and2024*, we had potentially dilutive securities in the form of stock warrants.

Income Taxes

We account for income taxes in accordance with ASC Topic740 which requires us to provide a net deferred tax asset or liability equal to the expected future tax benefit or expense of temporary reporting differences between book and tax accounting and any available operating loss or tax credit carry forwards. Income taxes are provided for the tax effects of transactions reported in the financial statements and consist of taxes currently due plus deferred taxes related primarily to differences between the bases of certain assets and liabilities for financial and income tax reporting. Deferred tax assets and liabilities represent the future tax return consequences of those differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred taxes also are recognized for operating losses that are available to offset future federal income taxes. Valuation allowances are established when necessary to reduce deferred tax assets to amounts expected to be realized.

Our policy is to recognize interest accrued related to unrecognized tax benefits in interest expense and penalties in operating expenses. During the years ended* December 31, 2025and2024*, we recognizedno interest and penalties. As of* December 31, 2025and2024*, we hadno accruals for interest and penalties.

Recently Issued Accounting Pronouncements

In* December 2023,the FASB issued ASU2023*-09, Income Taxes (Topic740*): Improvements to Income Tax Disclosures*, which requires companies to disclose disaggregated information related to the effective tax rate reconciliation and income taxes paid. This guidance is effective for public entities for fiscal years beginning after* December 15, 2024.We adopted this guidance prospectively as permitted, effective for the year ended December 31, 2025.Accordingly, prior-period amounts havenot* been recast and continue to be presented in accordance with previously applicable guidance under ASC Topic740 (see Note9).

In* March 2024,the FASB issued ASU2024*-02,* Codification Improvements*, which makes targeted improvements to the Accounting Standards Codification by clarifying guidance, correcting unintended application issues, and improving consistency across various topics within GAAP. The amendments in ASU2024-02 are effective for fiscal years beginning after* December 15, 2025.*We are currently reviewing this guidance and its impact on our consolidated financial statements.

In* November 2024,the FASB issued ASU2024*-03, Disaggregation of Income Statement Expenses, which requires disclosures about specific types of expenses included in expense captions presented on the face of the Consolidated Statement of Operations. This guidance is effective for public entities for fiscal years beginning after* December 15, 2026.*We are currently reviewing this guidance and its impact on our consolidated financial statements.

In* July 2025**,* the FASB issued ASU2025-05, Measurement of Credit Losses for Accounts Receivable and Contract Assets, which introduces a practical expedient. The practical expedient gives companies the ability to assume current conditions as of the balance sheet date donot change for the remaining life of the asset. The amendments in ASU2025-05 are effective for fiscal years beginning after* December 15, 2025.*** **We are currently reviewing this guidance and its impact on our condensed consolidated financial statements.

In* November 2025,the FASB issued ASU2025*-11,* Interim Reporting (Topic270): Narrow-Scope Improvements*, which clarifies certain aspects of interim reporting guidance, including the application of existing recognition and disclosure requirements in interim periods. The amendments are intended to improve the consistency and clarity of interim reporting practices. The amendments in ASU2025-11 are effective for fiscal years beginning after* December 15, 2026.*We are currently reviewing this guidance and its impact on our condensed consolidated financial statements.

In* December 2025,the FASB issued ASU2025*-12, Codification Improvements, which amends various sections of the Accounting Standards Codification to correct errors, clarify guidance, and make other incremental improvements to GAAP. The amendments address a wide range of topics including earnings per share, beneficial interests, transfers of receivables, treasury stock accounting, and certain disclosure requirements. The amendments are effective for fiscal years beginning after* December 15, 2026.*We are currently reviewing this guidance and its impact on our consolidated financial statements.

F-21

The following table sets forth a reconciliation of cash, cash equivalents, and restricted cash reported in the Consolidated Statements of Cash Flows that agrees to the total of those amounts as presented in the Consolidated Statements of Cash Flows.

Accounts receivable consist of the following:

Property and equipment consist of the following:

Depreciation expense for the years ended* December 31, 2025and2024* was $17,020,257, and $14,495,747, respectively.

F-22

Intangible assets consist of the following:

The future amortization associated with the intangible assets is as follows:

Amortization expense for the years ended* December 31, 2025and2024* was $7,751,053 and $7,683,952, respectively.

Future Amortization

The weighted average amortization period, in months, for intangible assets is as follows:

F-23

**BOSTON OMAHA CORPORATION

and SUBSIDIARIES

Short-term Investments

Short-term investments consist of U.S. Treasury securities and common stock warrants. The U.S. Treasury securities are held by UCS, classified as held to maturity, mature in less thantwelve months, and are reported at amortized cost which approximates fair value. Our common stock warrants of Sky Harbour Group Corporation are measured at fair value, with any unrealized holding gains and losses during the period included in Other investment income.

Marketable Equity Securities

Our marketable equity securities are publicly traded stocks measured at fair value using quoted prices for identical assets in active markets. Our marketable equity securities are held by UCS. Marketable equity securities as of* December 31, 2025and2024* are as follows:

U.S. Treasury Trading Securities

We classify our investments in debt securities that are bought and held principally for the purpose of selling them in the near term as trading securities. Our debt securities classified as trading are carried at fair value in the Consolidated Balance Sheets, with the change in fair value during the period included in earnings. Interest income is recognized at the coupon rate. Debt securities classified as trading as of* December 31, 2025and2024* are as follows:

F-24

Long-term Investments

Long-term investments consist of U.S. Treasury securities held to maturity, investments in special purpose entities, and equity investments inthree private companies. We have the intent and the ability to hold the U.S. Treasury securities to maturity. U.S. Treasury securities are stated at amortized cost which approximates fair value and are held by UCS.

24th Street Fund I &24th Street Fund II

On* May 1, 2023,our subsidiary, Boston Omaha Asset Management, LLC, acquired 100% of the membership interests in24th* Street Asset Management LLC, from the members of24th Street other than BOAM, for cash and BOC Class A common stock for a total purchase price of $5,016,494 in the aggregate. Prior to the transaction, BOAM indirectly owned 48% of the membership interests of24th Street. The consideration consisted of $2,759,072 in cash at closing, an additional $1,254,102 in cash subject to holdback, and 45,644 shares of BOC Class A common stock.

Each of the24th Street Funds’ hold investments in special purpose entities whose primary assets are real estate. We include the24th Street Funds’ investments in special purpose entities within long-term investments in our Consolidated Balance Sheets.

Equity Investments

During* May 2018,we invested $19,058,485 in voting common stock of CB&T Holding Corporation, which we refer to as “CB&T,” the privately held parent company of Crescent Bank & Trust. Our investment represents 15.60% of CB&T’s outstanding common stock. CB&T is a closely held corporation, whose majority ownership rests withone* family.

In* July 2023,we invested approximately $3,000,000 in voting preferred stock of MyBundle.TV Inc., which we refer to as “MyBundle.” The preferred stock hasone* vote per share and is convertible into whole shares of common stock, determined according to the conversion formula contained in MyBundle’s amended and restated articles of incorporation.

Long-Term Investments

Long-term investments consist of the following:

We reviewed our investments as of* December 31, 2025and2024* and concluded thatno impairment to the carrying value was required.

F-25

Investment in Unconsolidated Affiliates

We have various investments in equity method affiliates, whose businesses are in real estate, real estate services, and private aviation infrastructure. One of the investments in affiliates, Logic Real Estate Companies, LLC, which we refer to as “Logic,” is managed by an entity controlled by a member of our board of directors.

Sky Harbour Group Corporation

In* October 2020,our subsidiary BOC Yellowstone LLC, served as sponsor for the underwritten initial public offering of a special purpose acquisition company named Yellowstone Acquisition Company, which we refer to as "Yellowstone". Yellowstone sold in its public offering 13,598,898 units at a price of $10.00 per unit, each unit consisting ofone share of Class A common stock and a redeemable warrant to purchaseone-half of a share of Class A common stock at an exercise price of $11.50 per share. Between Augustand November 2020,we invested, through BOC Yellowstone, approximately $7.8 million through the purchase of 3,399,724 shares of Class B common stock and 7,719,779 non-redeemable private placement warrants (the "private placement warrants"), each warrant entitling us to purchaseone share of Class A common stock at $11.50 per share. BOC Yellowstone, as the sponsor of Yellowstone and under the terms of the public offering, owned approximately 20% of Yellowstone’s issued and outstanding common stock. The purpose of the offering was to pursue a business combination in an industry other than thethree* industries in which we owned and operated businesses at that time: outdoor advertising, surety insurance, and broadband services businesses.

On* August 1, 2021,Yellowstone entered into a business combination agreement with Sky Harbour LLC (“SHG”), a developer of private aviation infrastructure focused on building, leasing and managing business aviation hangars. On September 14, 2021,*our subsidiary BOC YAC Funding LLC completed the previously-announced investment of $55 million in Series B Preferred Units of SHG. In addition to our $55 million investment, we also agreed to provide SHG an additional $45 million through the purchase of additional shares of Yellowstone Class A common stock at a price of $10 per share through a private placement investment (“PIPE”).

On* January 25, 2022,*Yellowstone completed the previously announced proposed business combination with SHG following stockholder approval. As a result, SHG became a consolidated subsidiary of Yellowstone and Yellowstone was renamed Sky Harbour Group Corporation, which we refer to as “Sky Harbour.” In connection with the business combination, our Series B Preferred Units of SHG converted into 5,500,000 shares of Sky Harbour Group Class A common stock at a price of $10 per share. Also, in connection with the business combination, we entered into a subscription agreement with Sky Harbour, pursuant to which Sky Harbour sold to us 4,500,000 shares of Class A common stock at a price of $10 per share, for total cash consideration of $45 million.

F-26

On* November 2, 2023,Sky Harbour entered into a securities purchase agreement with certain investors, pursuant to which Sky Harbour agreed to sell and issue to the Investors at an initial closing an aggregate of 6,586,154 shares of the Company’s Class A common stock, par value $0.0001 per share and accompanying warrants to purchase up to an aggregate of 1,141,600 shares of Class A Common Stock, for an aggregate purchase price of $42,810,000. On November 29, 2023,Sky Harbour sold and issued to the Investors an aggregate of 2,307,692 PIPE Shares of the Company's Class A common stock, par value $0.0001 per share and accompanying PIPE Warrants to purchase an aggregate of 400,000 shares of Class A Common Stock for an aggregate purchase price of $15,000,000. Together with thefirst* closing on* November 2, 2023,the aggregate PIPE financing through the Purchase Agreement totaled $57,810,000. In connection with Sky Harbour's financing transactions occurring in November 2023,*we recorded a dilution loss of approximately $2,200,000 within ‘Equity in income of unconsolidated affiliates’ to reflect the change in our ownership of Sky Harbour's net assets.

On* October 25, 2024,Sky Harbour entered into a securities purchase agreement with certain investors, pursuant to which Sky Harbour agreed to sell and issue to the Investors at an initial closing an aggregate of 3,955,790 PIPE shares of its Class A Common stock for an aggregate purchase price of approximately $37,600,000. On December 20, 2024,Sky Harbour issued an additional 3,955,790 PIPE shares of its Class A Common Stock in connection with the exercise of all the rights to purchase additional shares provided to PIPE investors who participated in the October 2024closing for net proceeds of approximately $37,600,000, at a sale price of $9.50 per share. Aggregate proceeds from both closings were approximately $75,200,000, representing the full capacity of the equity raise. In connection with Sky Harbour's financing transactions occurring during thefourth* quarter of fiscal2024, we recorded a dilution gain of approximately $5,100,000 within ‘Equity in income of unconsolidated affiliates’ to reflect the change in our ownership of Sky Harbour's net assets.

All the shares of Sky Harbour Class A common stock and Sky Harbour Warrants to purchase Class A common stock that we hold have been registered under the Securities Act. However, our ability to resell any significant portion of these shares is limited by the large number of shares and warrants we hold relative to the average trading volume of these securities. Additionally, we currently retain the ability to nameone director to the currentseven member Sky Harbour’s Board of Directors. We donot receive material non-public information from Sky Harbour or the director we have nominated to the Sky Harbour Board of Directors. The terms of the Sky Harbour business combination prohibited us from selling any of our securities in Sky Harbour prior to* January 25, 2023and has since expired. If our 15.3% equity interest in Sky Harbour, comprised of 11,671,494 shares of Class A common stock, was accounted for at fair value based on its quoted market price as of December 31, 2025and December 31, 2024,*it would be valued at approximately $105,000,000 and $148,000,000, respectively.

The following table is a reconciliation of our investments in equity affiliates as presented in investments in unconsolidated affiliates on our Consolidated Balance Sheets, together with combined summarized financial data related to the unconsolidated affiliates:

Combined summarized financial data for these affiliates is as follows:

F-27

The fair value hierarchy prioritizes inputs to valuation techniques used to measure fair value intothree broad levels:

Level1** — Observable inputs such as unadjusted quoted prices in active markets for identical assets or liabilities.

Level2** — Inputs other than quoted prices in active markets that are observable either directly or indirectly, including: quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that arenot active or other inputs that are observable or can be corroborated by observable market data.

Level3** — Unobservable inputs that are supported by little orno market data and require the reporting entity to develop its own assumptions.

At* December 31, 2025and2024*, our financial instruments included cash, cash equivalents, receivables, marketable securities, investments, accounts payable, and long-term debt. The carrying value of cash, cash equivalents, receivables, and accounts payable approximates fair value due to the short-term nature of the instruments (level1 in the fair value hierarchy). The carrying value of borrowings, if any, under our billboard revolving line of credit facility as well as our broadband term loan facility approximates fair value because of the variable market interest rate charged to us for these borrowings (level1 in the fair value hierarchy). The fair value of borrowings under our billboard term loan facility is estimated using quoted prices for similar debt (level2 in the fair value hierarchy). At* December 31,2025, the estimated fair value of our billboard term loan borrowings included within long-term debt was $24,700,000, which is less than the approximate carrying amount of $25,700,000. At December 31,*2024, the estimated fair value of our billboard term loan borrowings included within long-term debt was $24,500,000, which was less than the approximate carrying amount of $26,500,000.

Warrants

Our private placement warrants related to Sky Harbour are considered level2 and measured at fair value using observable inputs for similar assets in an active market. Our re-measurement of the private placement warrants for the years ended* December 31, 2025and2024*, resulted in losses and gains of approximately $18,000,000 and $17,000,000, respectively, which are included within Other investment income within our Consolidated Statements of Operations.

Fund I, Fund II and BFR Special Purpose Entities

We report fund investments on our Consolidated Balance Sheets at their estimated fair value, with gains (losses) resulting from changes in fair value reflected within ‘Other investment income’ in the accompanying Consolidated Statements of Operations. Each of the24th Street Funds’ and BFR's investments in special purpose entities invested in real estate are categorized in Level3 of the fair value hierarchy. The primary asset held by each special purpose entity is real estate, for whichthird-party appraisals were obtained. Appraisals of the investments in special purpose entities used an income capitalization and/or comparable sales approach to value the underlying real estate. The income capitalization approach used capitalization rates ranging from 5.43% to 6.62% and considered market rents in valuing the properties. The comparable sales approach used observable market transactions to value the underlying real estate. As of* December 31,*2025, the aggregate fair value of the24th Street Funds’ and BFR's investments in special purpose entities was approximately $24,300,000 and $46,900,000, respectively.

F-28

Marketable Equity Securities

On an investment life-to-date basis, we have realized net gains on the sale of equity securities within the marketable equity portfolio held at Boston Omaha of approximately$84,000,000. These amounts exclude any realized gains on equity securities held within the marketable equity portfolio managed by UCS.

Sky Harbour Group Corporation Class A common stock

We account for our 15.3% equity interest in Sky Harbour, comprised of 11,671,494 shares of Class A common stock, under the equity method. If our investment in Sky Harbour’s Class A common stock was accounted for at fair value based on its quoted market price as of* December 31,2025 it would be valued at approximately $105,000,000. As of December 31, 2024,our equity interest in Sky Harbour was 16.4% and was comprised of 12,401,589 shares of Class A common stock. If our investment in Sky Harbour’s Class A common stock was accounted for at fair value based on its quoted market price as of December 31,*2024 it would have been valued at approximately $148,000,000.

Marketable Equity Securities and U.S. Treasury Trading Securities

Marketable equity securities and U.S. Treasury trading securities are reported at fair values. Substantially all of the fair value is determined using observed prices of publicly traded securities, level1 in the fair value hierarchy.

F-29

We are subject to taxation in all jurisdictions in which we operate that impose an income tax on our business activities.

The Company adopted ASU2023-09 effective* January 1, 2025using a prospective transition method. Accordingly, the enhanced income tax disclosures required by the standard are presented only for the current year. Prior-period disclosures continue to be presented in accordance with previous guidance and arenot* comparable to the current year presentation.

The components of the income tax expense for the year ended* December 31, 2025and the tax effects of temporary differences that give rise to deferred taxes at December 31, 2025*are as follows:

F-30

The components of the income tax expense for the year ended* December 31, 2024and the tax effects of temporary differences that give rise to deferred taxes at December 31, 2024*are as follows:

The realization of deferred tax assets, including net operating loss carryforwards, is dependent on the generation of future taxable income sufficient to realize the tax deductions, carryforwards and credits. Valuation allowances on deferred tax assets are recognized if it is determined that it is more likely thannot that the asset willnot be realized. As of* December 31,*2025, the Company has only recorded a valuation allowance against certain state net operating loss deferred tax assets that it has determined to be more-likely-than-not not realizable.

F-31

As of* December 31,2025, we have available federal tax operating loss carry forwards of approximately $133.4 million. Of the $133.4 million, $7.1 million arose in tax years beginning before December 31, 2017and maybe carried forward20* years. The remaining tax net operating losses were generated in years beginning after* December 31, 2017.Tax net operating loss carry forwards generated in years beginning after December 31, 2017** maybe carried forward indefinitely but are only available to offset80%* of future taxable income. We have available state tax operating loss carry forwards of approximately $99.8 million, which are available to reduce future state taxable income and expire at various times and amounts.

Pursuant to Section382 of the Internal Revenue Code of1986, as amended, annual use of our net operating losses* maybe limited if it is determined that an ownership shift has occurred. An ownership shift is generally defined as a cumulative change in equity ownership by‘‘5%* shareholders’’ that exceeds50 percentage points over a rollingthree-year period. We have determined that through* December 31, 2025,*two ownership shifts occurred; however, we donot anticipate that these shifts would result in any permanent limitation on our ability to utilize our net operating loss and credit carryforward amounts.

The reconciliation of our total income tax expense (benefit) at the federal statutory income tax rate and our actual effective income tax rate is as follows:

For the year ended* December 31, 2025,income taxes paid to individual jurisdictions that exceeded5%* of total income taxes paid included payments to the states of Georgia, Tennessee, and Utah. The remaining payments to other jurisdictions didnot individually exceed5% of total income taxes paid and are included within the aggregated state and local jurisdictions total of $50,943.

Uncertain Tax Positions

As of* December 31,2025 we donot have any open or ongoing exams by any taxing authorities. The federal and state statutes of limitation for assessment of tax liability generally lapsethree andfour years, respectively, after the date the tax returns are filed. However, income tax attributes that are carried forward, such as net operating loss carryforwards, may*be challenged and adjusted by taxing authorities at any time prior to the expiration of the statute of limitations for the tax year in which they are utilized.

F-32

Impact of recently enacted tax legislation

On* July 4, 2025,President Trump signed into law the One Big Beautiful Bill Act (“OBBBA”), which includes several changes to the taxation of corporations that could impact the Company beginning in2025.* The OBBBA permanently restored100% bonus depreciation under IRC Section168(k) for qualified property acquired and placed in service after* January 19, 2025,which mayaffect the timing of depreciation deductions. In addition, the OBBBA reinstated and made permanent an EBITDA‑based computation of adjusted taxable income for purposes of the business interest expense limitation under IRC Section163*(j), which generally increases the amount of interest expense deductible in a given year. These provisions arenot anticipated to have a material impact on the Company’s cash taxes in2025.

Our asset retirement obligations include the costs associated with the removal of structures, resurfacing of the land and retirement cost, if applicable, related to our outdoor advertising and broadband assets. The following table reflects information related to our asset retirement obligations:

F-33

On* April 25, 2022,we filed a new shelf registration statement on Form S-3 (FileNo.* 333-264470) that was declared effective on* May 11, 2022,relating to the offering of Class A common stock, preferred stock, par value $0.001 per share, which we refer to as “preferred stock,” debt securities and warrants of the Company for up to $500,000,000 (the"2022* Shelf Registration Statement"). Additionally, in the2022 Shelf Registration Statement, we registered for resale up to 8,297,039 shares of Class A common stock acquired in2018 or earlier in private placements in accordance with the terms of a2018 registration rights agreement. We willnot receive any proceeds from the sale of Class A common stock by the selling shareholders. The selling stockholders are the Massachusetts Institute of Technology, or “MIT,” as well as238 Plan Associates LLC, an MIT pension and benefit fund and a limited partnership holding our Class A common stock for the economic benefit of MIT. In* May 2022,we also registered 1,018,660 shares of Class A common stock held by Magnolia and Boulderado and their affiliates. All the shares held by Boulderado were repurchased by the Company in May 2024and, as a result,522,231 shares of our Class A common stock are available for resale under that registration statement. As of December 31, 2025*, certain of our stockholders still hold 7,713,933 registered shares of our Class A common stock. The2022 shelf registration statement expired in* May 2025.*

F-34

On* July 23, 2024,the Board approved and authorized a share repurchase program (the“2024* Share Repurchase Program”), pursuant to which the Company could repurchase up to $20 million of its Class A common stock, from time to time, in the open market, privately negotiated transactions, or otherwise in compliance with Rule10b-18 under the Securities Exchange Act of1934. The Board also authorized the Company, in its discretion, to establish “Rule10b5-1 trading plans” for these share repurchases. The2024 Share Repurchase Program went into effect on or about* August 15, 2024,following the release of the quarterly report on Form10*-Q for the quarter ended* June 30, 2024and terminated on September 30, 2025.On November 14, 2025,the Board approved and authorized a share repurchase program (the“2025* Share Repurchase Program”), pursuant to which we announced our intention to repurchase up to $30 million of our Class A common stock, from time to time, in the open market, privately negotiated transactions, or otherwise in compliance with Rule10b-18 under the Securities Exchange Act of1934. The Board also authorized the Company, in its discretion, to establish “Rule10b5-1 trading plans” for these share repurchases. The2025 Share Repurchase Program went into effect on or about* November* 18, 2025 and will terminate on* December 31, 2026,unless earlier terminated in the discretion of the Board. The actual timing, number, and value of shares repurchased under the2025* Share Repurchase Program will depend on a number of factors, including constraints specified in applicable SEC regulations, price, general business and market conditions, and alternative investment opportunities. Pursuant to the2025 Share Repurchase Program, the Company isnot obligated to repurchase any specific number of shares of its Class A common stock and shallnot repurchase more than 25% of the average daily volume of its stock over the previous20 trading days. The actual timing, number, and value of shares repurchased under2025 the Share Repurchase Program will depend on a number of factors, including constraints specified in applicable SEC regulations, price, general business and market conditions, and alternative investment opportunities. During2024, we repurchased 111,323 shares of our Class A common stock for a total cost of approximately $1,600,000 under the2024 Share Repurchase Program. We didnot repurchase any shares in2025 under the2024 Share Repurchase Plan due to numerous blackout periods during thefirst nine months of2025. During the year ended* December 31, 2025*, we repurchased 444,753 shares of our Class A common stock for a total cost of approximately $5,800,000 under the2025 Share Repurchase Program.

As of* December* 31,2024, there were 53,562 Class B warrants. Each share of Class B common stock is identical to Class A common stock in liquidation, dividend and similar rights. The only differences between our Class B common stock and our Class A common stock are that each share of Class B common stock has 10 votes for each share held, while the Class A common stock has a single vote per share, and certain actions cannot be taken without the approval of the holders of the Class B common stock.

On* January 10, 2025,Magnolia Capital Fund, LP ("MCF") exercised, in full, Class B warrants, issued in2015* and expiring in* June 2025,*to purchase shares of our Class B common stock. Under the terms of the warrants, MCF purchased 52,778 shares of Class B common stock at an exercise price of approximately $525,000 paid in cash. As a result, there areno outstanding warrants issued by BOC to purchase Class B common stock.

At* December 31, 2024,there were 784 outstanding warrants for our Class A common stock. These warrants expired in Juneof2025.* As a result, there wereno outstanding warrants for our Class A common stock as of* December 31, 2025.*

A summary of warrant activity for the years ended* December 31, 2025and2024*, is presented in the following table:

F-35

Separation Agreement with Alex Rozek

On* May 9, 2024,the Company, Alex B. Rozek, and certain other parties set forth therein, entered into a Separation and Stock Repurchase Agreement (the “Separation Agreement”). Effective as of May 9, 2024,Mr. Rozek resigned as an officer and director of the Company and all its direct and indirect subsidiaries. Mr. Rozek continues to serve as a member of the board of directors of Sky Harbour. All amounts due and payable to Mr. Rozek were paid in2024* and2025 andno severance, expense reimbursement or other sums are due to Mr. Rozek in2026 or beyond under the Separation Agreement.

Securities Repurchase

Pursuant to the Separation Agreement, the Company repurchased from Mr. Rozek and Boulderado Partners, LLC, an entity controlled by Mr. Rozek, in the aggregate,210,000 shares of Company Class A Common Stock,527,780 shares of Company Class B Common Stock, and 51,994 warrants to acquire 51,994 shares of Company Class B Common Stock.

The price of the Class A shares repurchased was based on the30-trading day volume-weighted average price of the Class A Common Stock for the30 trading days endingtwo trading days prior to the execution of the Separation Agreement. The price of the Class B shares repurchased was based on the30-trading day volume-weighted average price of the Class A Common Stock for the30 trading days endingtwo trading days prior to the execution of the Separation Agreement plus a blocking/control premium, for which management employed athird-party valuation expert.

The aggregate purchase price paid to Mr. Rozek was $9,175,605, comprised of cash payments of $8,800,480 and 36,705 shares of Class A Common Stock of Sky Harbour. The aggregate purchase price paid to Boulderado was $9,951,113, comprised of cash payments of $7,960,891 and 194,738 shares of Class A Common Stock of Sky Harbour.

Separation and Benefits

Pursuant to the Separation Agreement, (a) in2024, we transferred to Mr. Rozek 200,000 shares of Class A Common Stock, par value $0.0001 of Sky Harbour, as consideration for his efforts in connection with the successful launch of Sky Harbour, (b) Mr. Rozek received severance of $960,000, which was paid in equal monthly installments for a period of18 months, and (c) Mr. Rozek received employee benefits of $75,000, which was paid in equal monthly installments for a period of18 months, each of which are included within "Employee costs" within our Consolidated Statements of Operations for the year ended* December 31, 2024.*

Mr. Rozek agreed to customary non-solicitation, non-competition, confidentiality, cooperation, and return of property covenants. As consideration for entering into a non-competition agreement, we paid Mr. Rozek $250,000.

In addition, Mr. Rozek and the named executive officers and board of directors of the Company agreed to a mutual non-disparagement covenant, and the Company agreed, subject to certain conditions, to retain Mr. Rozek as its representative on the board of directors of Sky Harbour until* December 31, 2026.*

F-36

Link Credit Facility

On* August 12, 2019,Link Media Holdings, Inc., (“Link”), a wholly owned subsidiary of Boston Omaha Corporation (“BOC”), which owns and operates BOC’s billboard businesses, entered into a Credit Agreement (the “Credit Agreement”) with First National Bank of Omaha (the “Lender”) under which Link could borrow up to $40,000,000 (the “Credit Facility”). The Credit Agreement provided for an initial term loan (“Term Loan1”), an incremental term loan (“Term Loan2”) and a revolving line of credit. Link initially borrowed approximately $18,000,000 under Term Loan1* and $5,500,000 under Term Loan2. These loans are secured by all assets of Link and its operating subsidiaries, including a pledge of equity interests of each of Link’s subsidiaries. In addition, each of Link’s subsidiaries has joined as a guarantor to the obligations under the Credit Agreement. These loans arenot guaranteed by BOC or any of BOC’s non-billboard businesses.

On* December 6, 2021,Link entered into a Fourth Amendment to the Credit Agreement with the Lender which modified the original Credit Agreement by merging all outstanding principal amounts under both Term Loan1* and Term Loan2 intoone term loan (the “Term Loan”) having a fixed interest rate of 4.00% per annum, and increasing the total Term Loan borrowing limit to $30,000,000.

On* May 31, 2022,Link entered into a Fifth Amendment to the Credit Agreement with the Lender which modified the Credit Agreement by extending the period of time under which Link mayissue to BOC a cash dividend from January 31, 2022to June 30, 2022*in an amount up to $8,125,000 in the aggregate.

On* April 6, 2023,Link entered into a Sixth Amendment to Credit Agreement (the “Sixth Amendment”) with the Lender. The Sixth Amendment modifies the Credit Agreement to provide additional flexibility for Link in making “Investment Capital Expenditures” byno* longer deducting expenditures which qualify as Investment Capital Expenditures from EBITDA in calculating the Consolidated Fixed Charge Coverage Ratio. As a result, only “Maintenance Capital Expenditures” shall be deducted from EBITDA in testing the Consolidated Fixed Charge Coverage Ratio. The amount of unfunded Investment Capital Expenditures (Investment Capital Expenditures other than expenditures funded by BOC) allowable during any test period shallnot exceed the Investment Capital Expenditure Available Amount during such test period.

On* September 22, 2023,*Link entered into a Seventh Amendment to the Credit Agreement with the Lender which modified the Credit Agreement by increasing the maximum availability under the revolving line of credit loan facility from $5,000,000 to $10,000,000.

On* February 14, 2024,*Link entered into an Eighth Amendment to the Credit Agreement with the Lender which modified the Credit Agreement to provide additional flexibility for Link to issue dividends to BOC.

On* May 30, 2024,*Link entered into a Ninth Amendment to the Credit Agreement with the Lender which modified the Credit Agreement by increasing the maximum availability under the revolving line of credit loan facility from $10,000,000 to $15,000,000.

On* October 20, 2025,Link entered into a Tenth Amendment to Credit Agreement, which modified the Credit Agreement by extending the revolving line of credit maturity date and updating the definition of the consolidated fixed charge coverage ratio. The revolving line of credit is now due and payable on August 12, 2029.*In order to consolidate the various amendments to the Credit Agreement, the Tenth Amendment to Credit Agreement incorporated the previous amendments to the Credit Agreement into a Restated Credit Agreement.

As of* December 31,2025, Link has borrowed $30,000,000 through the Term Loan under the Credit Facility. Principal amounts under the Term Loan are payable in monthly installments according to a25-year amortization schedule. Principal payments commenced on July 1, 2020for amounts previously borrowed under Term Loan1* and* October 1, 2020for amounts previously borrowed under Term Loan2.* The Term Loan is payable in full on* December 6, 2028.*

The revolving line of credit loan facility has a $15,000,000 maximum availability. Interest payments are based on the30-day U.S. Prime Rate minus an applicable margin ranging between 0.65% and 1.15% dependent on Link’s consolidated leverage ratio.

Long-term debt included within our Consolidated Balance Sheets as of* December 31,2025 and2024 consists of Term Loan borrowings of approximately $25,700,000 and $26,500,000, respectively, of which approximately$890,000 and$900,000 are classified as current, respectively. As of December 31,*2025 and2024 there was $9,100,000 and $9,600,000, outstanding, respectively, related to the revolving line of credit, which is included within long-term debt in our Consolidated Balance Sheets.

During the term of the Credit Facility, Link is required to comply with the following financial covenants: A consolidated leverage ratio for any test period ending on the last day of any fiscal quarter of Link (a) beginning with the fiscal quarter ended* June 30, 2024ofnot* greater than 3.50 to1.00, (b) beginning with the fiscal quarter ending* December 31, 2026ofnot* greater than 3.25 to1.00, and (c) beginning with the fiscal quarter ending* December 31, 2027and thereafter, ofnot* greater than 3.00 to1.0, and a minimum consolidated fixed charge coverage ratio ofnot less than 1.15 to1.00 measured quarterly, based on a rollingfour quarters. The Company was in compliance with these covenants as of* December 31,*2025.

The Credit Agreement includes representations and warranties, reporting covenants, affirmative covenants, negative covenants, financial covenants, and events of default customary for financings of this type. Upon the occurrence of an event of default the Lender* may*accelerate the loans. Upon the occurrence of certain insolvency and bankruptcy events of default the loans will automatically accelerate.

The aggregate minimum principal payments required on long-term debt as of* December 31,*2025 were as follows: $886,624 in2026, $923,257 in2027, and $23,861,896 in2028.

F-37

Boston Omaha Broadband Credit Facility

On* September 17, 2024,three operating subsidiaries of Boston Omaha Broadband, LLC (“BOB”) entered into a Credit Agreement (the “BOB Credit Agreement”) with First National Bank of Omaha (the “Lender”) under which certain subsidiaries of BOB can borrow up to $20,000,000 in the aggregate in term loans (the “BOB Credit Facility”). Thethree operating subsidiaries which are the borrowers under the BOB Credit Agreement are FIF AireBeam, LLC, FIF St. George, LLC, and FIF Utah, LLC (collectively, the “Borrowers”). The loan is guaranteed by BOB but isnot* guaranteed by BOC or any other businesses owned by BOC and its other subsidiaries. The loans under the BOB Credit Facility are secured by all assets of each of the Borrowers. Funds available under the BOB Credit Facility are to be used for capital expenditures associated with capital acquisition and leasing of capital equipment for expansion of the Borrowers’ businesses and had to be drawn by* December 31, 2025.*The BOB Credit Agreement was subsequently split into separate credit agreements with each of the Borrowers in order to allow certain borrowers to apply for federal loan funding, hereinafter referred to as the "BOB Credit Agreements." All material terms of the original BOB Credit Agreement remain unchanged in the Amended and Restated Credit Agreement for FIF Airebeam, LLC and FIF St. George, LLC and the Credit Agreement for FIF Utah, LLC.

The BOB Credit Agreements provided for incremental drawdowns of the term loan in minimum increments of $1,000,000. Each term loan is duefive years following the borrowing date of such term loan. Principal under each term loan is amortized in equal monthly payments over a 10-year period from the date of each term loan. Interest under each term loan accrues at the “Applicable Margin,” which is set at (a)2.75% per annum with respect to any SOFR Loan, and (b)1.75% per annum with respect to any Base Rate Loan. There was a fee during thefirst year of the Credit Facility equal to 0.25% of any unused portion of the $20 million loan commitment. As of* December 31, 2025,the outstanding term loan end dates range from October 1, 2029to November 18, 2030.*

Pursuant to the BOB Credit Agreements, BOB is required to comply with the following financial covenants: A consolidated leverage ratio for any test period ending on the last day of any fiscal quarter of BOB ofnot greater than 3.50 to1.00, a minimum consolidated fixed charge coverage ratio ofnot less than 1.15 to1.00 measured quarterly, based on rollingfour quarters, and maximum capital expendituresnot exceeding Consolidated Adjusted EBITDA less dividends and distributions paid to BOB, the cash portion of taxes, unfinanced maintenance capital expenditures, principal amortization payments or redemptions on indebtedness to be paid in cash, cash payments made with respect to capital lease obligations during the period, and cash interest expense for the period.

The BOB Credit Agreements includes representations and warranties, reporting covenants, affirmative covenants, negative covenants, financial covenants, and events of default customary for financings of this type. Upon the occurrence of an event of default the Lender* mayaccelerate the loan. Upon the occurrence of certain insolvency and bankruptcy events of default the loan will automatically accelerate. All assets of the Borrowers, their Subsidiaries and BOB are secured by the grant of a security interest in substantially all their assets to the Lender. The Company was in compliance with these covenants as of December 31,*2025.

As of* December 31,2025, there was approximately$14,000,000 outstanding under the BOB Credit Agreements. The aggregate minimum principal payments required on long-term debt as of December 31,*2025 were as follows: $1,500,000 in2026, $1,500,000 in2027, $1,500,000 in2028, $1,500,000 in2029, and $8,000,000 thereafter.

F-38

We enter into operating lease contracts primarily for land and office space. Agreements are evaluated at inception to determine whether such arrangements contain a lease. Operating leases include land lease contracts and contracts for the use of office space.

Right of use assets, which we refer to as “ROU assets,” represent the right to use an underlying asset for the lease term, and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at the commencement date based on the present value of lease payments over the respective lease term. Lease expense is recognized on a straight-line basis over the lease term.

Certain of our operating lease agreements include rental payments based on a percentage of revenue and others include rental payments adjusted periodically for inflationary changes. Percentage rent contracts, in which lease expense is calculated as a percentage of advertising revenue, and payments due to changes in inflationary adjustments are included within variable rent expense, which is accounted for separately from periodic straight-line lease expense.

Many of our leases entered into in connection with land provide options to extend the terms of the agreements. Generally, renewal periods are included in minimum lease payments when calculating the lease liabilities as, for most leases, we consider exercise of such options to be reasonably certain. As a result, optional terms and payments are included within the lease liability. Our lease agreements donot contain any material residual value guarantees or material restrictive covenants.

The implicit rate within our lease agreements is generallynot determinable. As such, we use the incremental borrowing rate, which we refer to as “IBR,” to determine the present value of lease payments at the commencement of the lease. The IBR, as defined in ASC842, is “the rate of interest that a lessee would have to pay to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment.”

Operating Lease Cost

Operating lease cost for the years ended* December 31,*2025 and2024 is as follows:

Supplemental cash flow information related to operating leases was as follows:

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**BOSTON OMAHA CORPORATION

and SUBSIDIARIES

Operating Lease Assets and Liabilities

Maturity of Operating Lease Liabilities

As of* December 31, 2025* our operating leases have a weighted-average remaining lease term of 15.63 years and a weighted-average discount rate of 5.34%.

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This summary presents our current segments, as described below.

General Indemnity Group, LLC

GIG conducts our insurance operations through its subsidiaries, UCS and BOSS Bonds Insurance Agency, LLC, formerly known as South Coast Surety Insurance Services, LLC. Both BOSS Bonds and UCS clients are nationwide. Revenue consists of surety bond sales and insurance commissions. GIG’s corporate resources are used to support BOSS Bonds and UCS, and to make additional business acquisitions in the insurance industry.

Link Media Holdings, LLC

LMH conducts our billboard rental operations. LMH billboards are located in Alabama, Arkansas, Florida, Georgia, Illinois, Iowa, Kansas, Missouri, Nebraska, Nevada, Oklahoma, South Dakota, Tennessee, Virginia, West Virginia, and Wisconsin.

Boston Omaha Broadband, LLC

BOB conducts our broadband operations. BOB provides high-speed broadband services to its customers located mainly in Arizona, Florida, Nevada, and Utah.

Boston Omaha Asset Management, LLC

BOAM conducts our asset management operations. BOAM’s primary objective is to achieve long-term returns while seeking to limit the risk of capital and purchasing power loss in our investments in other companies and our real estate activities. We commenced reporting BOAM as a separate segment based on our acquisition of24th Street Asset Management on* May 1, 2023*and are in the process of winding down its operations.

The accounting policies of the above segments are the same as those described within Footnote2 “Summary of Significant Accounting Policies”.

Resources are allocated and performance is assessed by our CEO, whom we have determined to be our Chief Operating Decision Maker (CODM). The CODM evaluates the performance of our segments and allocates resources to them based on segment operating income and segment adjusted EBITDA. We define adjusted EBITDA as net income (loss) before income tax expense (benefit), noncontrolling interest in subsidiary income (loss), interest expense, interest and dividend income, depreciation, amortization, accretion, gain or loss on disposition of assets, and other investment income (loss).

The cost and expense information provided below is based on the information regularly provided to the CODM. Given the diversity of our operating segments and the differences in revenue streams and cost structures, there are variances in the form, content, and levels of such expense information significant to the business. Expenses considered significant forone operating segment* may**not* be significant in others.

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The table below presents information about reported segments for the years ending* December 31:*

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The following table provides a reconciliation of the beginning and ending reserve balances at UCS for losses and loss adjustment expenses ("LAE") for the years ended* December**31:*

During the years ended* December 31,*2025 and2024, there was a favorable loss development for the current year and a favorable prior year’s loss development which was the result of a re-estimation of amounts ultimately to be paid on prior year losses and loss adjustment expense. Original estimates are increased or decreased as additional information becomes known regarding individual claims.

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On* April 2, 2024,we entered into agreements with the minority members of each of FIF Utah, LLC and FIF St. George, LLC, entities controlled by us as majority member. Under these agreements, the minority members of each of the entities exchanged their membership interests in the LLCs for unregistered shares of Boston Omaha Class A common stock. Under the securities exchange agreements, Alpine Networks, Inc., a company owned by Steven McGhie, the then Chief Executive Officer of Boston Omaha Broadband, and the sole owner of the minority interest in FIF Utah, LLC, exchanged its approximate 17% interest in FIF Utah, LLC for 275,611 shares of Boston Omaha Class A common stock, which for purposes of the transaction was valued at approximately $4,400,000. Thetwo* owners of the minority interests in FIF St. George, LLC exchanged their combined 20% interest in FIF St. George, LLC for 563,750 shares of Boston Omaha Class A common stock, which for purposes of the transaction was valued at approximately $9,000,000. As a result, Boston Omaha Broadband, LLC, our wholly owned subsidiary, now owns 100% of the membership interests in each of FIF Utah, LLC and FIF St. George, LLC.

In each transaction, the value for the unregistered Boston Omaha Class A common stock was calculated based on the volume weighted average trading price of a share of Boston Omaha Class A common stock for the30 trading days ended* March 28, 2024*as reported on the New York Stock Exchange. The difference between the fair value of the Class A shares issued and the carrying balance of the noncontrolling interests at the date of the transaction is recorded within additional paid in capital within our Consolidated Balance Sheets.

As of* December 31, 2025*, we had approximately $33,000,000 in excess of federally insured limits on deposit with financial institutions.

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Subsequent to* December 31, 2025*, GIG sold its preferred stock investment in Breezeway Homes, Inc. ("Breezeway") and received cash proceeds of approximately $877,000. GIG's initial investment was $100,000 back in2016 and the Breezeway investment was valued at $348,694 on our consolidated balance sheet as of* December 31, 2025*.

Subsequent to* December 31, 2025*, we repurchased 375,286 shares of our Class A common stock for a total cost of approximately $4,800,000.