Biggest changeOff-Balance Sheet Arrangements We do not maintain any off-balance sheet arrangements. 41 Table of Contents Cash Flows Historical Cash Flows The following table summarizes our sources and uses of cash for the Year ended December 31, 2022 and 2021 (in thousands): Year ended December 31, 2022 December 31, 2021 Cash and restricted cash at beginning of period $ 203,935 $ 72 Net cash used in operating activities (27,491 ) (6,615 ) Cash used in investing activities (187,838 ) (15,994 ) Net cash provided by financing activities 52,790 226,472 Cash and restricted cash at end of period $ 41,396 $ 203,935 Operating Activities Cash provided by operating activities is significantly influenced by the amount of cash we invest in personnel and infrastructure to support the anticipated growth of our business.
Biggest changeLease Commitments The table below sets forth certain information with respect to our future minimum lease payments required under operating and finance leases as of December 31, 2023 (in thousands): Year Ending December 31, Operating Leases Finance Leases 2024 $ 2,080 $ 29 2025 2,323 24 2026 3,296 17 2027 3,727 2 2028 3,634 - Thereafter 249,683 - Total lease payments 264,743 72 Less imputed interest (195,306 ) (5 ) Total $ 69,437 $ 67 Contractual Obligations The following table sets forth our contractual obligations as of December 31, 2023 (in thousands): 2024 2025-2026 2027-2028 Thereafter Total Principal Payments of bonds payable $ - $ - $ - $ 166,340 $ 166,340 Interest Payments on bonds payable 6,941 13,881 13,881 114,968 149,671 Contractual payments on other long-term indebtedness 2,484 7,981 95 - 10,560 Lease commitments 2,109 5,660 7,363 249,683 264,815 Total $ 11,534 $ 27,522 $ 21,339 $ 530,991 $ 591,386 Off-Balance Sheet Arrangements We do not maintain any off-balance sheet arrangements. 40 Table of Contents Cash Flows Historical Cash Flows The following table summarizes our sources and uses of cash for the years ended December 31, 2023 and 2022 (in thousands): Year ended December 31, 2023 December 31, 2022 Cash and restricted cash at beginning of period $ 41,396 $ 203,935 Net cash used in operating activities (7,735 ) (27,491 ) Net cash used in investing activities (16,268 ) (187,838 ) Net cash provided by financing activities 54,873 52,790 Cash and restricted cash at end of period $ 72,266 $ 41,396 Operating Activities Cash provided by operating activities is significantly influenced by the amount of cash we invest in personnel and infrastructure to support the anticipated growth of our business.
Riley up to 10 million shares of our Class A Common Stock at 97% of the volume weighted average price of our Class A Common Stock calculated in accordance with the Purchase Agreement, over a period of 36 months subject to certain limitations and conditions contained in the Purchase Agreement.
Riley up to 10 million shares of our Class A Common Stock at 97% of the volume weighted average price of our Class A Common Stock calculated in accordance with the Stock Purchase Agreement, over a period of 36 months subject to certain limitations and conditions contained in the Stock Purchase Agreement.
Sales and timing of any sales of Class A Common Stock are solely at our election, and we are under no obligation to sell any securities to B. Riley under the Purchase Agreement. As consideration for B.
Sales and timing of any sales of Class A Common Stock are solely at our election, and we are under no obligation to sell any securities to B. Riley under the Stock Purchase Agreement. As consideration for B.
We intend to continue to aggressively take action to mitigate these inflationary pressures, reduce construction costs, and shorten development schedules, both in the near term at our APA Phase I, DVT Phase I, and ADS Phase I development projects, and in the long term at future projects.
We intend to continue to aggressively take action to mitigate inflationary pressures, reduce construction costs, and shorten development schedules, both in the near term at our APA Phase I, DVT Phase I, and ADS Phase I development projects, and in the long term at future projects.
However, there can be no assurance that we will be able to increase the lease rates for the hangars within our HBS hangar campuses to absorb these increased costs and/or delays, if at all.
However, there can be no assurance that we will be able to increase the lease rates for the hangars within our hangar campuses to absorb these increased costs and/or delays, if at all.
Even if we can obtain such additional equity financing if needed, there can be no assurance that we would be successful in raising such additional financing on favorable terms, if at all. 37 Table of Contents Critical Accounting Policies and Estimates The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and expenses during the periods reported.
Even if we can obtain such additional equity financing if needed, there can be no assurance that we would be successful in raising such additional financing on favorable terms, if at all. 36 Table of Contents Critical Accounting Policies and Estimates The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and expenses during the periods reported.
We believe that recent inflationary pressures and market conditions will lead to continued increases in construction costs as well as market rental rates for hangars within our HBS hangar campus development projects.
We believe that recent inflationary pressures and market conditions will lead to continued increases in construction costs as well as market rental rates for hangars within our hangar campus development projects.
All these future hangar campus projects are discretionary and require us to identify the appropriate airports with the target hangar demand economics, secure required ground leases and permits, and complete future construction at such sites.
All future hangar campus projects are discretionary and require us to identify the appropriate airports with the target hangar demand economics, secure required ground leases and permits, and complete future construction at such sites.
The Series 2021 PAB that has a maturity date of July 1, 2036 was issued at a premium, and Sky received bond proceeds that were $0.2 million above its face value.
The Series 2021 Bond that has a maturity date of July 1, 2036 was issued at a premium, and Sky received bond proceeds that were $0.2 million above its face value.
Our HBS hangar campuses feature exclusive private hangars and a full suite of dedicated services specifically optimized for home-based, versus transient, aircraft. The physical footprint of the U.S. business aviation fleet grew by almost 28 million square feet in the ten years preceding the beginning of the COVID-19 pandemic, with hangar supply lagging dramatically, especially in key growth markets.
Our home basing hangar campuses feature exclusive private hangars and a full suite of dedicated services specifically optimized for home-based, versus transient, aircraft. The physical footprint of the U.S. business aviation fleet grew by almost 28 million square feet in the ten years preceding the beginning of the COVID-19 pandemic, with hangar supply lagging dramatically, especially in key growth markets.
Equity Financing On the Closing Date, we completed the Yellowstone Transaction, Yellowstone changed its name to Sky Harbour Group Corporation, and Sky restructured its capitalization, issuing its Sky Common Units to the Company.
Equity Financing On the Closing Date, we completed the Yellowstone Transaction, YAC changed its name to Sky Harbour Group Corporation, and Sky restructured its capitalization, issuing its Sky Common Units to the Company.
The Series 2021 PABs are subject to a Continuing Disclosure Agreement whereby SHC is obligated to provide electronic copies of (i) monthly construction reports, (ii) quarterly reports containing quarterly financial information of SHC and (iii) annual reports containing audited consolidated financial statements of SHC to the Municipal Securities Rulemaking Board.
The Series 2021 Bonds are subject to a Continuing Disclosure Agreement whereby SHC is obligated to provide electronic copies of (i) monthly construction reports, (ii) quarterly reports containing quarterly financial information of SHC and (iii) annual reports containing audited consolidated financial statements of SHC to the Municipal Securities Rulemaking Board.
Covenants in the Series 2021 PABs require SHC to maintain a debt service coverage ratio (as defined in the relevant documents) of at least 1.25 for each applicable test period, commencing with the quarter ending December 31, 2024.
Covenants in the Series 2021 Bonds require SHC to maintain a debt service coverage ratio (as defined in the relevant documents) of at least 1.25 for each applicable test period, commencing with the quarter ending December 31, 2024.
Generally, these deposits may be redeemed upon demand and the majority are maintained with a major financial institution with reputable credit. Our restricted cash is held in trust at a major financial institution pursuant to the Series 2021 PABs indenture.
Generally, these deposits may be redeemed upon demand and the majority are maintained with a major financial institution with reputable credit. Our restricted cash is held in trust at a major financial institution pursuant to the Series 2021 Bonds indenture.
We monitor the relative credit standing of financial institutions with whom we transact and limit the amount of credit exposure with any one entity. Our portfolio of investments and restricted investments is composed entirely of U.S. Treasury securities as of December 31, 2022.
We monitor the relative credit standing of financial institutions with whom we transact and limit the amount of credit exposure with any one entity. Our portfolio of investments and restricted investments is composed entirely of U.S. Treasury securities as of December 31, 2023.
We expect to issue additional debt to finance future site developments and higher interest rates would impact our overall economic performance. In addition, we are subject to credit spreads demanded by fixed income investors and bank lenders.
We expect to issue additional debt to finance future site developments and higher interest rates would impact our overall economic performance. In addition, we are subject to credit spreads demanded by fixed income investors.
The Series 2021 PABs are comprised of three maturities: $21.1 million bearing interest at 4.00%, due July 1, 2036; $30.4 million bearing interest at 4.00%, due July 1, 2041; and $114.8 million bearing interest at 4.25%, due July 1, 2054.
The Series 2021 Bonds are comprised of three maturities: $21.1 million bearing interest at 4.00%, due July 1, 2036; $30.4 million bearing interest at 4.00%, due July 1, 2041; and $114.8 million bearing interest at 4.25%, due July 1, 2054.
The Series 2021 PABs are collateralized on a joint and several basis with the property and revenues of all SHC subsidiaries and their assets financed or to be financed from the proceeds of the Series 2021 PABs.
The Series 2021 Bonds are collateralized on a joint and several basis with the property and revenues of all SHC subsidiaries and their assets financed or to be financed from the proceeds of the Series 2021 Bonds.
Overview and Background We are an aviation infrastructure development company building the first nationwide network of HBS hangar campuses for business aircraft. We develop, lease, and manage general aviation hangars across the United States, targeting airfields in markets with significant aircraft populations and high hangar demand.
Overview and Background We are an aviation infrastructure development company building the first nationwide network of home basing hangar campuses for business aircraft. We develop, lease, and manage general aviation hangars across the United States, targeting airfields in markets with significant aircraft populations and high hangar demand.
Investing Activities Our primary investing activities have consisted of payments related to the cost of construction at our various HBS hangar campus development projects and investment in U.S. Treasury Securities. As our business expands, we expect to continue to invest in our current and anticipated future portfolio of HBS development projects.
Investing Activities Our primary investing activities have consisted of payments related to the cost of construction at our various home basing hangar campus development projects and investment in U.S. Treasury Securities. As our business expands, we expect to continue to invest in our current and anticipated future portfolio of home basing hangar campus development projects.
Recent Accounting Pronouncements See “ Note 2 — Basis of Presentation and Significant Accounting Policies ”in the Notes to Consolidated Financial Statements for a full description of recent accounting pronouncements including the expected dates of adoption and effects on results of operations and financial condition. 38 Table of Contents Results of Operations Year ended December 31, 2022 Compared to the Year ended December 31, 2021 The following table sets forth a summary of our consolidated results of operations for the periods indicated below and the changes between the periods (in thousands).
Recent Accounting Pronouncements See “ Note 2 — Basis of Presentation and Significant Accounting Policies ” in the Notes to Consolidated Financial Statements for a full description of recent accounting pronouncements including the expected dates of adoption and effects on results of operations and financial condition. 37 Table of Contents Results of Operations Year ended December 31, 2023 Compared to the Year ended December 31, 2022 The following table sets forth a summary of our consolidated results of operations for the periods indicated below and the changes between the periods (in thousands).
No assurance can be given that our cost mitigation strategies will be successful, the costs of our projects will not exceed budgets or the guaranteed maximum price for such projects, or that the completion will not be delayed beyond the projected completion dates.
No assurance can be given that our cost mitigation strategies will be successful, the costs of our ongoing and future projects will not exceed budgets or the guaranteed maximum price for such projects, or that the completion will not be delayed beyond the projected completion dates.
While we expect that our general and administrative expenses will rise in some measure as our portfolio of campuses grows, we expect that such expenses as a percentage of our portfolio will decrease over time due to efficiencies, economies of scale, insourcing of job functions, and cost control measures. 36 Table of Contents Construction Material Costs and Labor When constructing our HBS hangar campuses, we use various materials and components.
While we expect that our general and administrative expenses will rise in some measure as our portfolio of campuses grows, we expect that such expenses as a percentage of our portfolio will decrease over time due to efficiencies, economies of scale, insourcing of job functions, and cost control measures. 35 Table of Contents Construction Material Costs and Labor When constructing our home basing hangar campuses, we use various materials and components.
As of December 31, 2022, we have sold no shares of our Class A Common Stock to B. Riley pursuant to the Stock Purchase Agreement. See “ Note 10 — Equity and Redeemable Equity ” in the Notes to Consolidated Financial Statements for additional information regarding the Stock Purchase Agreement.
As of December 31, 2023, we have sold no shares of our Class A Common Stock to B. Riley pursuant to the Stock Purchase Agreement. See “ Note 12 — Equity and Redeemable Equity ” in the Notes to Consolidated Financial Statements for additional information regarding the Stock Purchase Agreement.
For the years ended December 31, 2022 and 2021, our operating expense related to ground leases was $3.7 million and $3.7 million, respectively. As we enter into new ground leases at new airport sites, our payments to airport landlords will continue to increase into the future.
For the years ended December 31, 2023 and 2022, our operating expense related to ground leases was $4.0 million and $3.7 million, respectively. As we enter into new ground leases at new airport sites, our payments to airport landlords will continue to increase into the future.
Our long-term liquidity requirements include lease payments under our ground leases with airport authorities, repaying principal and interest on outstanding borrowings, funding the construction costs of our HBS hangar campuses (see “— Construction Material Costs and Labor ”) funding for operations, and paying accrued expenses.
Our long-term liquidity requirements include lease payments under our ground leases with airport authorities, repaying principal and interest on outstanding borrowings, funding the construction costs of our hangar campus development projects (see “— Construction Material Costs and Labor ”), funding for operations, and paying accrued expenses.
Our actual results may differ materially from those anticipated in these forward-looking statements as a result of many factors, including those set forth under “ Special Note Regarding Forward-Looking Statements, ” “ Item 1A. Risk Factors ” and elsewhere in this Annual Report on Form 10-K.
Our actual results may differ materially from those anticipated in these forward-looking statements as a result of many factors, including those set forth under “ Special Note Regarding Forward-Looking Statements, ” “ Item 1A. Risk Factors ” and elsewhere in this Report.
We realize economies of scale in construction through a proprietary prototype hangar design replicated at HBS hangar campuses across the United States. This allows for centralized procurement, straightforward permitting processes, efficient development processes, and the best hangar in business aviation.
We expect to realize economies of scale in construction through a prototype hangar design replicated at our hangar campuses across the United States. This allows for centralized procurement, straightforward permitting processes, efficient development processes, and the best hangar in business aviation.
A recent study conducted by a business aircraft manufacturer forecasted that business aircraft will only continue to grow in the next ten years, with up to 8,500 new business jet deliveries worth almost $275 billion expected to be delivered between 2023 and 2032, further supported by data from the major business aviation manufacturers that suggest the current order backlog for new business aviation aircraft is almost $47 billion.
A recent study conducted by a business aircraft manufacturer forecasted that business aircraft will only continue to grow in the next ten years, with up to 8,500 new business jet deliveries worth over $275 billion expected to be delivered between 2024 and 2033, further supported by data from the major business aviation manufacturers that suggest the current order backlog for new business aviation aircraft is over $49 billion.
As of December 31, 2022, we were in compliance with all debt covenants.
As of December 31, 2023, we were in compliance with all debt covenants.
Financial Statements and Supplementary Data ” of this Annual Report on Form 10-K. Certain information contained in the discussion and analysis set forth below includes forward-looking statements that reflect our plans, estimates, and beliefs.
Financial Statements and Supplementary Data ” of this Report. Certain information contained in the discussion and analysis set forth below includes forward-looking statements that reflect our plans, estimates, and beliefs.
We generally contract for our materials and labor under guaranteed maximum price contracts upon receipt of building permits. This allows us to mitigate the risks associated with increases in building materials and labor costs between the time construction begins on an HBS hangar campus and the time it is completed.
We contract for certain of our materials and labor with general contractors under guaranteed maximum price contracts upon receipt of building permits. This allows us to mitigate certain of the risks associated with increases in certain building materials and labor costs between the time construction begins on a hangar campus and the time it is completed.
The lease agreements are either on a month-to-month basis or have a defined term and may have options to extend the term. Some of the leases contain options to terminate the lease by either party with given notice. There are no options given to the lessee to purchase the underlying assets.
The lease agreements are either on a month-to-month basis or have a defined term and may have options to extend the term. Some of the leases contain options to terminate the lease by either party with given notice.
We have elected to not capitalize any interest cost that is implicit within our operating leases into cost of construction on the consolidated balance sheet, but instead, we expense our ground lease cost in the consolidated statements of operations. Revenue Recognition We lease hangar facilities that we construct to third parties.
We have elected to not capitalize any interest cost that is implicit within our operating leases into cost of construction on the consolidated balance sheet, but instead, we expense our ground lease cost in the consolidated statements of operations.
The net proceeds from the issuance of the Series PABs proceeds are being used to (a) finance or refinance the construction of various aviation facilities consisting of general aviation aircraft hangars and storage facilities located and to be located on the SGR site, the OPF site, the BNA site, the APA site, the DVT site, and following our March 2023 election to reallocate a portion of the net proceeds, the ADS site; (b) fund debt service and other operating expenses such as ground lease expense during the initial construction period; (c) fund deposits to the Debt Service Reserve Fund; and (d) pay certain costs of issuance related to the Series PABs. 40 Table of Contents Debt Covenants The Series 2021 PABs contain financial and non-financial covenants, including a debt service coverage ratio, a restricted payments test and limitations on the sale, lease, or distribution of assets.
The net proceeds from the issuance of the Series 2021 Bonds proceeds are being used to (a) finance or refinance the construction of various aviation facilities consisting of general aviation aircraft hangars and storage facilities located and to be located on the SGR site, the OPF site, the BNA site, the APA site, the DVT site, and following our March 2023 election to reallocate a portion of the net proceeds, the ADS site; (b) fund debt service and other operating expenses such as ground lease expense during the initial construction period; (c) fund deposits to the Debt Service Reserve Fund; and (d) pay certain costs of issuance related to the Series 2021 Bonds.
We exercised this ability and received the requisite approvals and reports in March 2023 with respect to our ADS Phase I development project.
We exercised this ability utilizing approximately $26 million of the $50 million available and received the requisite approvals and reports in March 2023 with respect to our ADS Phase I development project.
As our strategic partnership grows, we expect this vertical integration will enable us to deliver metal buildings to each development site in shorter timeframes, which we believe will reduce the overall construction duration of each development project.
We expect that over time this vertical integration will enable us to deliver metal buildings to each development site in shorter timeframes, which we believe will reduce the overall construction duration of each development project in the future.
We continue to monitor the supply markets to achieve the best prices available. Typically, the price changes that most significantly influence our operations are price increases in steel, concrete, and labor.
Typically, the materials and most of the components used to construct our hangar campuses are readily available in the United States. We continue to monitor the supply markets to achieve the best prices available. Typically, the price changes that most significantly influence our operations are price increases in steel, concrete, and labor.
Current Capital Requirements and Future Expenditures for Expansion We previously funded SHC with over $200 million to fund the two phases at each of our five ground leased airport locations. These construction funds and reserves are held at the bondholder trustee.
Current Capital Requirements and Future Expenditures for Expansion We previously funded SHC with over $200 million to fund the two phases at our initial five ground leased airport locations.
The Company evaluates the collectability of tenant receivables for payments required under the lease agreements. If the Company determines that collectability is not probable, the Company recognizes any difference between revenue amounts recognized to date under ASC 842 and payments that have been collected from the lessee, including security deposit amounts held, as a current period adjustment to rental revenue.
If the Company determines that collectability is not probable, the Company recognizes any difference between revenue amounts recognized to date under ASC 842 and payments that have been collected from the lessee, including any additional rent or lease termination fees, as a current period adjustment to rental revenue.
However, as a new publicly-traded company, we cannot assure you that we will have access to these sources of capital or that, even if such sources of capital are available, that these sources of capital will be available on favorable terms.
We believe that we will be able to utilize such a registration statement to efficiently access capital. However, we cannot assure you that we will have access to these sources of capital or that, even if such sources of capital are available, that these sources of capital will be available on favorable terms.
When management determines that it is reasonably certain that we will exercise our options to renew the leases, the renewal terms are included in the lease term and the resulting ROU asset and operating lease liability balances. We also have tenant leases and account for those leases in accordance with the lessor guidance under ASC Topic 842.
When management determines that it is reasonably certain that we will exercise our options to renew the leases, the renewal terms are included in the lease term and the resulting ROU asset and operating lease liability balances.
Our working capital consists primarily of cash, receivables from tenants, prepaid expenses, accounts payable, accrued compensation, accrued other expenses, and lease liabilities. The timing of collection of our tenant receivables, and the timing of spending commitments and payments of our accounts payable, accrued expenses, accrued payroll and related benefits, all affect these account balances.
The timing of collection of our tenant receivables, and the timing of spending commitments and payments of our accounts payable, accrued expenses, accrued payroll and related benefits, all affect these account balances.
These decreases were offset by $45.0 million of proceeds received from the issuance of the BOC PIPE and $15.7 million of gross proceeds from the Yellowstone trust account, both occurring in the first quarter of 2022.
During the year ended December 31, 2022, the Company received $45.0 million of proceeds from the issuance of the BOC PIPE and $15.7 million of gross proceeds from the YAC trust account, both occurring in the first quarter.
On average, each future campus is anticipated to be composed of an average of 10-20 hangars and is expected to cost approximately $55 million per campus, with 60% or more to be funded with additional public activity bonds.
On average, each future campus is anticipated to be composed of at least 100,000 rentable square feet and is expected to cost approximately $55 million per campus, with 60% or more to be funded with additional private activity bonds or other indebtedness.
Rental revenue is recognized in accordance with ASC Topic 842, Leases, and includes (i) fixed payments of cash rents, which represents revenue each tenant pays in accordance with the terms of its respective lease and is recognized on a straight-line basis over the term of the lease and (ii) variable payments of tenant reimbursements, which are recoveries of all or a portion of the common area maintenance and operating expenses of the property and are recognized in the same period as the expenses are incurred.
Rental revenue is recognized in accordance with ASC 842 and includes fixed payments of cash rents, which represents revenue each tenant pays in accordance with the terms of its respective lease and is recognized on a straight-line basis over the term of the lease.
Net cash used in operating activities was $27.5 million for the year ended December 31, 2022, compared to $6.6 million for the same period in 2021. The $20.9 million increase in cash used in operating activities was primarily attributable to the $9.6 million of initial direct costs associated with the purchase of our former landlord's leasehold interest at OPF.
The approximately $19.8 million decrease in net cash used in operating activities was primarily attributable to a $15.5 million favorable change in the Company's working capital position, which was primarily driven by $9.6 million of initial direct costs associated with the purchase of our former landlord's leasehold interest at OPF during the year ended December 31, 2022.
The increase was also partially attributable to a $5.0 million increase in net loss, net of non-cash adjustments, and a $6.2 decrease in working capital. The increase in net loss and changes in working capital were primarily driven by general and administrative expenses incurred in the expansion of our business, including transaction-related expenses and other expenses related to corporate governance.
The decrease was also partially attributable to a $4.3 million decrease in net loss, net of non-cash adjustments. The decrease in net loss was primarily driven by an increase in revenue and a decrease in non-recurring general and administrative expenses incurred in the expansion of our business, including transaction-related expenses incurred during the year ended December 31, 2023.
Factors That May Influence Future Results of Operations Revenues Our revenues are earned pursuant to the lease agreements we enter into with our tenants.
The initial term of the ORL Lease will be 30 years from expiration of construction period. Factors That May Influence Future Results of Operations Revenues Our revenues are derived from rents we earn pursuant to the lease agreements we enter into with our tenants.
As consideration for the issuance of Sky Common Units to the Company, Yellowstone contributed approximately $48 million of net proceeds to us, consisting primarily of the BOC PIPE, and the amount held in the Yellowstone trust account, net of redemptions and transaction costs.
As consideration for the issuance of Sky Common Units to the Company, YAC contributed approximately $48 million of net proceeds to us, consisting primarily of the BOC PIPE, and the amount held in the YAC trust account, net of redemptions and transaction costs. 39 Table of Contents Private Activity Bonds On September 14, 2021, SHC completed an issuance through the Public Finance Authority (Wisconsin) of $166.3 million of Series 2021 PABs.
The approximately $6.0 million increase was primarily driven by an approximately $2.5 million increase in salaries, wages, and benefits, which reflects an increase in full-time and contracted employees. The increase also reflects the implementation of stock and cash incentive compensation programs instituted to attract and retain employees.
The approximately $0.4 million increase was primarily driven by an approximately $2.6 million increase in salaries, wages, and benefits, which reflects an increase in full-time and contracted employees and the impact of an increase in expense recognized in connection with our equity compensation program.
Other (Income) Expenses Other (income) expenses increased from approximately $1.4 million of other expense to approximately $5.2 million of other income for the year ended December 31, 2022 as compared to the year ended December 31, 2021. This increase was primarily due to an approximately $5.1 million mark-to-market gain of the outstanding warrants at December 31, 2022.
Other (Income) Expenses Other (income) expenses for the year ended December 31, 2023 was approximately $8.4 million of expense as compared to approximately $5.2 million of income for the year ended December 31, 2022.
Cash used in investing activities was $187.9 million for the year ended December 31, 2022, compared to $16.0 million for the same period in 2021. The increase of $171.9 million in cash used in investing activities was driven primarily by $193.8 million of purchases of held-to-maturity U.S.
Net cash used in investing activities was approximately $16.3 million for the year ended December 31, 2023, compared to net cash used in investing activities of approximately $187.8 million for the same period in 2022.
We expect to raise additional equity capital and issue additional indebtedness as our business grows. Net cash provided by financing activities was $52.8 million for the year ended December 31, 2022, compared to $226.4 million for the same period in 2021.
Net cash provided by financing activities was $54.8 million for the year ended December 31, 2023, compared to $52.8 million for the same period in 2022.
Year ended December 31, 2022 December 31, 2021 Change Revenue: Rental revenue $ 1,845 $ 1,578 $ 267 Total revenue 1,845 1,578 267 Expenses: Operating 5,046 4,471 575 Depreciation 695 570 125 Loss on impairment of long-lived assets 248 - 248 General and administrative 14,714 8,737 5,977 Total expenses 20,703 13,778 6,925 Other (income) expense: Interest expense, net of capitalized interest - 1,160 (1,160 ) Other (income) expense (98 ) - (98 ) Unrealized (gain) loss on warrants (5,082 ) - (5,082 ) Loss on extinguishment of note payable to related party - 250 (250 ) Total other (income) expense (5,180 ) 1,410 (6,590 ) Net loss $ (13,678 ) $ (13,610 ) $ (68 ) Revenues Revenues for the year ended December 31, 2022 were approximately $1.8 million, compared to approximately $1.6 million for the year ended December 31, 2021.
Year ended December 31, 2023 December 31, 2022 Change Revenue: Rental revenue $ 7,575 $ 1,845 $ 5,730 Total revenue 7,575 1,845 5,730 Expenses: Operating 7,168 5,046 2,122 Depreciation 2,278 695 1,583 Loss on impairment of long-lived assets - 248 (248 ) General and administrative 15,122 14,714 408 Total expenses 24,568 20,703 3,865 Operating loss (16,993 ) (18,858 ) 1,865 Other (income) expense: Interest expense, net of capitalized interest 541 - 541 Other (income) expense (737 ) (98 ) (639 ) Unrealized (gain) loss on warrants 8,644 (5,082 ) 13,726 Total other (income) expense 8,448 (5,180 ) 13,628 Net loss $ (25,441 ) $ (13,678 ) $ (11,763 ) Revenues Revenues for the year ended December 31, 2023 were approximately $7.6 million, compared to approximately $1.8 million for the year ended December 31, 2022.
We have lease agreements with lease and non-lease components; we have elected the accounting policy to not separate lease and non-lease components for all underlying asset classes.
We have lease agreements with lease and non-lease components; we have elected the accounting policy to not separate lease and non-lease components for all underlying asset classes. Revenue Recognition The Company leases the hangar facilities that it constructs to third parties. The Company determines whether a contract contains a lease at the inception of the contract.
For a more complete description of our operations, including our HBS hangar campus development projects, refer to Item 1 — Business . 35 Table of Contents Recent Developments On October 27, 2022, we substantially completed the construction of our BNA Phase II development project.
For a more complete description of our operations, including our home basing hangar campus development projects, refer to Item 1 — Business . 34 Table of Contents Recent Developments On October 11, 2023, we entered into a ground lease agreement (the “PWK Lease”) with PWK.
We structure our guaranteed maximum price construction contracts with shared savings clauses to incentivize the general contractors to reduce construction costs. At our SGR Phase I and BNA Phase II development projects, our total construction costs were lower than both our original pricing estimate and the project’s contracted guaranteed maximum price.
We structure our guaranteed maximum price construction contracts with shared savings clauses to incentivize the general contractors to reduce construction costs.
As a result, the warrants were not reflected in Sky’s financial statements for the Year ended December 31, 2021. 39 Table of Contents Liquidity and Capital Resources Overview Liquidity is a measure of our ability to meet potential cash requirements, including ongoing commitments to repay borrowings, fund the construction of new assets, fund working capital and other general business needs.
The variance was also partially attributable to an approximately $0.5 million increase in interest expense due to the assumption of additional indebtedness as part of the Rapidbuilt Acquisition. 38 Table of Contents Liquidity and Capital Resources Overview Liquidity is a measure of our ability to meet potential cash requirements, including ongoing commitments to repay borrowings, fund the construction of new assets, fund working capital and other general business needs.
Riley. Pursuant to the Stock Purchase Agreement, we have the right, in our sole discretion, to sell to B.
Common Stock Purchase Agreement On August 18, 2022, we entered into a Common Stock Purchase Agreement (the “Stock Purchase Agreement”) with B. Riley Principal Capital II, LLC (“B. Riley”). Pursuant to the Stock Purchase Agreement, we have the right, in our sole discretion, to sell to B.
We consummated the Yellowstone Transaction on January 25, 2022, to raise additional equity capital to, along with potential future debt and further equity issuances, begin to fund additional airport campuses and reach up to 20 airport campuses over the next several years.
We previously raised equity capital, along with potential future debt and further equity issuances, including the Private Placement Purchase Agreement entered into on November 1, 2023, see Note 12 — Equity and Redeemable Equity in the Notes to Consolidated Financial Statements, to begin to fund additional airport campuses and reach up to 20 airport campuses over the next several years.
These increases were offset by proceeds of $79.1 million received at maturity of certain of the Company’s restricted investments. Financing Activities Our primary financing activities have consisted of capital raised to fund the growth of our business and proceeds from debt obligations incurred to finance our HBS hangar campus development projects.
Financing Activities Our primary financing activities have consisted of capital raised to fund the growth of our business and proceeds from debt obligations incurred to finance our home basing hangar campus development projects. We expect to raise additional equity capital and issue additional indebtedness as our business grows.
The increase reflects the opening of our BNA campus during the three months ended December 31, 2022 and the placement of additional ground support equipment into service throughout 2022. General and Administrative Expenses For the years ended December 31, 2022, and 2021, general and administrative expenses were approximately $14.7 million and approximately $8.7 million, respectively.
The increase primarily reflects the opening of our OPF hangar campus during the three months ended March 31, 2023, the opening of our BNA hangar campus during the three months ended December 31, 2022, long-lived assets recognized as part of the Rapidbuilt Acquisition, and the placement of additional ground support equipment into service throughout 2022 and 2023.
These warrants were issued by YAC as part of its initial public offering.
These warrants consist of Public Warrants and Private Warrants initially issued by YAC as part of its initial public offering, and PIPE Warrants issued in November 2023 in connection with the Private Placement Purchase Agreement.
Included in net cash provided by operations are certain non-recurring legal, accounting, and consulting costs incurred for up to four quarters as a result of becoming a public company and a one-time outflow associated with the purchase of a leasehold interest at OPF.
Included in net cash used in operating activities are certain non-recurring legal, accounting, and consulting costs incurred for up to four quarters as a result of becoming a public company. Our working capital consists primarily of cash, receivables from tenants, prepaid expenses, accounts payable, accrued compensation, accrued other expenses, and lease liabilities.
In July 2022, we entered an exclusive strategic vendor partnership with a metal building and hangar door manufacturer that we expect to result in a reduction in the cost of the metal building and hangar door components at all future HBS hangar campuses.
In May 2023, we acquired a controlling interest in a metal building and hangar door manufacturer, that we expect will ultimately result in an increase in quality and a reduction in the overall cost of the metal building and hangar door components at future home basing hangar campus development projects.
The 17% increase primarily resulted from additional tenant leases commencing at SGR during the second and third quarters of 2022 and BNA during late 2022. Operating Expenses Operating expenses increased approximately $0.6 million, or 13%, from approximately $4.5 million for the year ended December 31, 2021 to approximately $5.0 million for the year ended December 31, 2022.
The approximately $5.7 million, or 311%, increase was primarily the result of tenant leases commencing at our OPF and BNA hangar campuses during the year ended December 31, 2023, as well as the cumulative impact of certain additional tenant leases in place at our SGR and BNA hangar campuses as compared to the year ended December 31, 2022.
Repair and maintenance expense associated with our hangars and related ground service equipment increased approximately $0.1 million, primarily driven by increased operations at our BNA and SGR campuses. Depreciation Expense Depreciation increased approximately $0.1 million, or 18%, for the year ended December 31, 2022, as compared to the year ended December 31, 2021.
Ground lease expense increased approximately $0.2 million, primarily due to new ground leases signed at PWK, BDL, and POU during the three months ended December 31, 2023. Depreciation Expense Depreciation increased approximately $1.6 million, or 228%, for the year ended December 31, 2023, as compared to the year ended December 31, 2022.
The following table summarizes our cash and cash equivalents, restricted cash, investments, and restricted investments as of December 31, 2022 and 2021 (in thousands): December 31, 2022 December 31, 2021 Cash and cash equivalents $ 2,174 $ 6,805 Restricted cash 39,222 197,130 Investments 24,895 - Restricted investments 114,648 - Total cash, restricted cash, investments, and restricted investments $ 180,939 $ 203,935 Common Stock Purchase Agreement On August 18, 2022, we entered into the Stock Purchase Agreement with B.
The following table summarizes our cash and cash equivalents, restricted cash, investments, and restricted investments as of December 31, 2023 and 2022 (in thousands): December 31, 2023 December 31, 2022 Cash and cash equivalents $ 60,257 $ 2,174 Restricted cash 12,009 39,222 Investments 11,866 24,895 Restricted investments 88,213 114,648 Total cash, restricted cash, investments, and restricted investments $ 172,345 $ 180,939 Private Placement and Securities Purchase Agreement On November 1, 2023, we entered into the Private Placement Purchase Agreement with certain Investors, pursuant to which we (i) sold and issued to the Investors on November 2, 2023 an aggregate of 6,586,154 PIPE Shares and accompanying PIPE Warrants to purchase up to 1,141,600 shares of Class A Common Stock, for an aggregate purchase price of $42.8 million, and (ii) sold and issued to the Investors on November 29, 2023 an aggregate of 2,307,692 PIPE Shares and accompanying PIPE Warrants to purchase up to an aggregate of 400,000 shares of Class A Common Stock for an aggregate purchase price of $15.0 million.
This increase was primarily driven by an approximately $0.4 million increase in salaries, wages, and benefits associated with our campus personnel.
Salaries, wages, and benefits associated with our hangar campus personnel increased by approximately $0.6 million, primarily driven by headcount increases at our BNA and OPF hangar campuses. Other operating expenses increased approximately $1.3 million, primarily driven by increased insurance, property taxes, and utilities associated with operations at our OPF, BNA, and SGR hangar campuses.