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v3.21.2

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 6 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Unrealized (gain) loss on net put/call option | $ (162,000) | $ 81,000
Net cash provided by operating activities - continuing operations | 1,662,873 | 4,785,208
Net cash used in operating activities - discontinued operations | (603,296) | (941,718)
Net cash provided by (used in) operating activities | 1,059,577 | 3,843,490
Cash flows from investing activities |  |
Additions to property, plant and equipment and construction in progress | (497,296) | (710,823)
Proceeds from asset dispositions | 44,860 | 450
Net cash used in investing activities | (452,436) | (9,210,373)
Cash flows from financing activities |  |
Dividends paid to common shareholders | (2,584,691) | (2,564,980)
Dividends paid to preferred shareholders | (5,200) | (5,738)
Dividends paid to non-controlling interests | (649,880) |
Repurchase of redeemable preferred stock | (14,863) | 0
Proceeds received from exercise of stock options | 1,709 | 4,418
Principal repayments on long-term debt | (23,195) | (13,158)
Net cash used in financing activities | (3,276,120) | (2,579,458)
Net decrease in cash and cash equivalents | (2,668,979) | (7,946,341)
Cash and cash equivalents at beginning of period | 43,794,150 | 42,071,083
Cash and cash equivalents at beginning of period - discontinued operations | 154,130 | 831,586
Less: cash and cash equivalents at end of period - discontinued operations | (69,158) | (827,806)
Cash and cash equivalents at end of period | 41,210,143 | 34,128,522
Interest paid in cash | 5,498 | 5,344
Non-cash transactions: |  |
Dividends declared but not paid | 1,295,377 | 1,288,154
Transfers from (to) inventory to (from) property, plant and equipment and construction in progress | 148,138 | (49,133)
Transfers from construction in progress to property, plant and equipment | 166,335 | 1,400,811
Right-of-use assets obtained in exchange for new operating lease liabilities | 1,852,608 | 16,383
Purchase of equipment through issuance of long-term debt | 58,220 | 122,292
Aerex |  |
Cash flows from investing activities |  |
Acquisition of noncontrolling interest in subsidiaries | $ 0 | $ (8,500,000)

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