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Consolidated Statements of Cash Flows (Unaudited) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2024 | Jan. 31, 2023 | Jan. 31, 2024 | Jan. 31, 2023
Cash flows from operating activities: |  |  |  |
Net loss | $ (6,509,000) | $ (6,090,000) | $ (20,761,000) | $ (16,786,000)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |
Depreciation of fixed assets | 114,000 | 40,000 | 286,000 | 157,000
Foreign exchange gain |  |  | 2,000 |
Amortization of intangible assets | 34,000 | 40,000 | 114,000 | 119,000
Amortization of right of use assets |  |  | 388,000 | 230,000
(Accretion of discount)/amortization of premium on investments |  |  | (277,000) | 198,000
Change in contingent consideration liability | (33,000) | 373,000 | (117,000) | 154,000
Stock based compensation | 100,000 | 300,000 | 803,000 | 911,000
Loss on disposition of assets | 210,000 |  | 210,000 |
Changes in operating assets and liabilities: |  |  |  |
Accounts receivable |  |  | 120,000 | (224,000)
Contract assets |  |  | (129,000) | 293,000
Inventory |  |  | (2,416,000) | (995,000)
Other assets |  |  | (2,933,000) | (1,530,000)
Accounts payable |  |  | 512,000 | (314,000)
Earnout payable |  |  | (500,000) |
Accrued expenses |  |  | 894,000 | 747,000
Right-of-use liabilities |  |  | (397,000) | (254,000)
Contract liabilities |  |  | (510,000) | 1,205,000
Net cash used in operating activities |  |  | (24,711,000) | (16,089,000)
Cash flows from investing activities: |  |  |  |
Redemptions of short term investments |  |  | 31,625,000 | 49,584,000
Purchases of short term investments |  |  | (7,935,000) | (30,402,000)
Purchases of property and equipment |  |  | (1,224,000) | (302,000)
Net cash provided by investing activities |  |  | 22,466,000 | 18,880,000
Cash flows from financing activities: |  |  |  |
Cash paid for tax withholding related to shares withheld |  |  | (13,000) | (14,000)
Proceeds from issuance of common stock - Cantor At The Market offering, net of issuance costs |  |  | 29,000 |
Net cash provided by/(used in) financing activities |  |  | 16,000 | (14,000)
Net (decrease) / increase in cash, cash equivalents and restricted cash |  |  | (2,229,000) | 2,777,000
Cash, cash equivalents and restricted cash, beginning of period |  |  | 7,103,000 | 8,362,000
Cash, cash equivalents and restricted cash, end of period | $ 4,874,000 | $ 11,139,000 | 4,874,000 | 11,139,000
Supplemental disclosure of noncash investing and financing activities: |  |  |  |
Common stock issued related to bonus and earnout payments |  |  | 1,250,000 |
Operating right of use asset obtained in exchange for operating lease liability |  |  | $ 1,247,000 |

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