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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities |  |
Net income | $ 274,341 | $ 590,619
Adjustments to reconcile net income to net cash provided by operating activities |  |
Depreciation and amortization | 1,989,761 | 1,438,908
Unrealized gain on marketable equity securities | (155,139) | (193,705)
Amortization of loan procurement costs | 199,797 | 200,819
Stock-based compensation | 126,035 | 102,989
Changes in operating assets and liabilities: |  |
Accounts receivable | 57,557 | (96,474)
Prepaid expenses and other assets | (26,314) | (37,436)
Accounts payable and accrued expenses | (468,710) | (298,390)
Net cash provided by operating activities | 1,997,328 | 1,707,330
Cash flows from investing activities |  |
Construction | (1,404,269) | (1,437,419)
Improvements and equipment additions | (203,077) | (58,186)
Acquisition of self storage properties |  | (6,287,082)
Net cash used in investing activities | (1,607,346) | (7,782,687)
Cash flows from financing activities |  |
Line of credit borrowing | 230,000 | 4,914,000
Principal payments on note payable | (491,081) | (470,955)
Issuance of common stock under rights offering, net of expenses |  | 6,280,987
Dividends paid | (2,427,023) | (2,107,376)
Net cash (used in) provided by financing activities | (2,688,104) | 8,616,656
Net (decrease) increase in cash, cash equivalents, and restricted cash | (2,298,122) | 2,541,299
Cash, cash equivalents, and restricted cash, beginning of period | 4,253,565 | 1,712,266
Cash, cash equivalents, and restricted cash, end of period | 1,955,443 | 4,253,565
Supplemental cash flow and noncash information |  |
Cash paid for interest | 996,904 | 821,434
Supplemental disclosure of noncash activities: |  |
Dividends payable | $ 358 | $ 7,179

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