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Share-Based Payments (Tables) | 9 Months Ended
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Jan. 31, 2022
Share-based Payment Arrangement [Abstract] |
Summary of allocation of share based compensation expense | Stock-based compensation expense was recognized as follows (table in thousands):
| Three Months Ended January 31, |  | Nine Months Ended January 31, |  |
| 2022 |  | 2021 |  | 2022 |  | 2021 |  |  |  |
General and administrative | $ | 223 |  |  | $ | 149 |  |  | $ | 442 |  |  | $ | 206 |  |  |  |  |
Sales and marketing | 53 |  |  | 51 |  |  | 149 |  |  | 148 |  |  |  |  |
Research and development | 3 |  |  | 7 |  |  | 17 |  |  | 16 |  |  |  |  |
Cost of oncology services | 31 |  |  | 25 |  |  | 116 |  |  | 67 |  |  |  |  |
Total stock-based compensation expense | $ | 310 |  |  | $ | 232 |  |  | $ | 724 |  |  | $ | 437 |  |  |  |  |
Summary of valuation assumptions for stock options | Black-Scholes assumptions used to calculate the fair value of options granted during the three and nine months ended January 31, 2022 and 2021 were as follows:
| Three Months Ended January 31, |  | Nine Months Ended January 31, |  |
| 2022 |  | 2021 |  | 2022 |  | 2021 |  |  |  |
Expected term in years | 6 |  | 3 |  | 6 |  | 3-6 |  |  |  |
Risk-free interest rates | 1.11%-1.20% |  | 0.12% |  | 0.82%-1.20% |  | 0.12%-0.39% |  |  |  |
Volatility | 64.37%-64.62% |  | 74.98% |  | 64.37%-66.21% |  | 72.64%-74.98% |  |  |  |
Dividend yield | —% |  | —% |  | —% |  | —% |  |  |  |
Summary of stock option activity | The Company’s stock options activity for the nine months ended January 31, 2022 was a s follows:
| Directors and Employees | Non- Employees |  |  | Total |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
Outstanding, April 30, 2021 | 1,618,231 |  | 35,415 |  |  |  | 1,653,646 |  |  | $ | 3.96 |  |  | 5.42 |  | $ | 11,384,000 |
Granted | 155,552 |  | 10,500 |  |  |  | 166,052 |  |  | 9.44 |  |  | 9.59 |  |
Exercised | (103,875) |  | — |  |  |  | (103,875) |  |  | 2.24 |  |  |  |  |
Forfeited | (20,500) |  | — |  |  |  | (20,500) |  |  | 7.14 |  |  |  |  |
Canceled | (8,875) |  | — |  |  |  | (8,875) |  |  | 4.83 |  |  |  |  |
Expired | — |  | (5,000) |  |  |  | (5,000) |  |  | 9.60 |  |  |  |  |
Outstanding, January 31, 2022 | 1,640,533 |  | 40,915 |  |  |  | 1,681,448 |  |  | 4.54 |  |  | 5.22 |  | $ | 6,611,000 |
Vested and expected to vest as of January 31, 2022 | 1,640,533 |  | 40,915 |  |  |  | 1,681,448 |  |  | 4.54 |  |  | 5.22 |  | $ | 6,611,000 |
Exercisable as of January 31, 2022 | 1,288,349 |  | 4,584 |  |  |  | 1,292,933 |  |  | 3.77 |  |  | 4.31 |  | $ | 6,057,000 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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