Quarterly report pursuant to Section 13 or 15(d)

Condensed Statements of Cash Flows Unaudited

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Condensed Statements of Cash Flows Unaudited - USD ($)
3 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Cash flows from operating activities    
Net income $ 1,009,960 $ 943,158
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Depreciation and amortization 529,414 436,198
Deferred taxes (384,000)
Loss on disposal of assets 1,594
Stock based compensation 538,524 483,287
Changes in operating assets and liabilities:    
Accounts receivable 4,653,817 1,666,920
Inventories 424,019 313,183
Other assets 102,481 41,706
Accounts payable, accrued expenses and deferred rent (432,340) (1,497,524)
Net cash provided by operating activities 6,825,875 2,004,522
Cash flows from investing activities    
Purchases of property, plant and equipment and intangible assets (276,599) (229,999)
Purchases of investments (1,558,000) (2,466,000)
Proceeds from maturities of investments 1,680,000 2,477,000
Net cash used in investing activities (154,599) (218,999)
Cash flows from financing activities    
Repurchases of common stock (10,850)
Proceeds from issuance of common stock under employee stock purchase plan 145,940 148,259
Proceeds from issuance of common stock upon exercise of stock options 17 3,249
Tax withholding related to vesting of restricted stock grants (6,676) (9,262)
Net cash provided by financing activities 139,281 131,396
Increase in cash and cash equivalents 6,810,557 1,916,919
Cash and cash equivalents, beginning of period 8,547,777 18,536,111
Cash and cash equivalents, end of period 15,358,334 20,453,030
Supplemental disclosures for cash flow information    
Cash (received) paid during the year for income taxes (1,043) 2,500
Non-cash financing activities    
Cashless exercise of stock options $ 9,658 $ 5,782