BUTLER NATIONAL CORP Research and Development Expense
BUTLER NATIONAL CORP (BUKS) reported Research and Development Expense of $268.00 thousand for the 3-month period ending 2026-07-31, per its 10-Q filed 2026-09-11.
Financial Statements › Expense Statement › Operating Expenses
us-gaap:ResearchAndDevelopmentExpense · last filed 2026-09-11
- BUTLER NATIONAL CORP research and development expense for the quarter ending 2026-07-31 was $268.00K, a 2.29% increase year-over-year.
- BUTLER NATIONAL CORP research and development expense for the quarter ending 2026-04-30 was $426.00K.
- BUTLER NATIONAL CORP research and development expense for the quarter ending 2026-01-31 was $514.00K, a 40.51% decline year-over-year.
- BUTLER NATIONAL CORP research and development expense for the quarter ending 2025-10-31 was $264.00K, a 47.31% decline year-over-year.
- BUTLER NATIONAL CORP research and development expense for fiscal 2026 was $1.47M, a 53.99% increase from fiscal 2025.
- BUTLER NATIONAL CORP research and development expense for fiscal 2025 was $952.00K, a 15.67% increase from fiscal 2024.
- BUTLER NATIONAL CORP research and development expense for fiscal 2024 was $823.00K, a 22.72% decline from fiscal 2023.
- BUTLER NATIONAL CORP research and development expense for fiscal 2023 was $1.06M, a 54.72% decline from fiscal 2022.
| Period end | Research and Development Expense 3 month | Research and Development Expense 3 month as first filed | Research and Development Expense 6 month | Research and Development Expense 6 month as first filed | Research and Development Expense 9 month | Research and Development Expense 9 month as first filed | Research and Development Expense 12 month | Research and Development Expense 12 month as first filed |
|---|---|---|---|---|---|---|---|---|
| 2026-07-31 | $268.00K 10-Q · filed 2026-09-11 | $694.00K derived: sum of 2 quarters · filed 2026-09-11 | $1.21M derived: sum of 3 quarters · filed 2026-09-11 | $1.47M derived: sum of 4 quarters · filed 2026-09-11 | ||||
| 2026-04-30 | $426.00K derived: 10-K 12 month − 10-Q 9 month · filed 2026-07-08 | $940.00K derived: sum of 2 quarters · filed 2026-07-08 | $1.20M derived: sum of 3 quarters · filed 2026-07-08 | $1.47M 10-K · filed 2026-07-08 | ||||
| 2026-01-31 | $514.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2026-03-12 | $778.00K derived: sum of 2 quarters · filed 2026-03-12 | $1.04M 10-Q · filed 2026-03-12 | $407.00K derived: sum of 4 quarters · filed 2026-09-11 | ||||
| 2025-10-31 | $264.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2025-12-11 | $526.00K 10-Q · filed 2025-12-11 | -$107.00K derived: sum of 3 quarters · filed 2026-09-11 | $757.00K derived: sum of 4 quarters · filed 2026-09-11 | ||||
| 2025-07-31 | $262.00K 10-Q · filed 2026-09-11 | -$371.00K derived: sum of 2 quarters · filed 2026-09-11 | $493.00K derived: sum of 3 quarters · filed 2026-09-11 | $994.00K derived: sum of 4 quarters · filed 2026-09-11 | ||||
| 2025-04-30 | -$633.00K derived: 10-K 12 month − 10-Q 9 month · filed 2026-07-08 | $231.00K derived: sum of 2 quarters · filed 2026-07-08 | $732.00K derived: sum of 3 quarters · filed 2026-07-08 | $952.00K 10-K · filed 2026-07-08 | ||||
| 2025-01-31 | $864.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2026-03-12 | $1.36M derived: sum of 2 quarters · filed 2026-03-12 | $1.58M 10-Q · filed 2026-03-12 | $224.00K derived: sum of 4 quarters · filed 2026-03-12 | ||||
| 2024-10-31 | $501.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2025-12-11 | $721.00K 10-Q · filed 2025-12-11 | -$640.00K derived: sum of 3 quarters · filed 2025-12-11 | $1.13M derived: sum of 4 quarters · filed 2025-12-11 | ||||
| 2024-07-31 | $220.00K 10-Q · filed 2025-09-12 | -$1.14M derived: sum of 2 quarters · filed 2025-09-12 | $632.00K derived: sum of 3 quarters · filed 2025-09-12 | $838.00K derived: sum of 4 quarters · filed 2025-09-12 | ||||
| 2024-04-30 | -$1.36M derived: 10-K 12 month − 10-Q 9 month · filed 2025-07-03 | $412.00K derived: sum of 2 quarters · filed 2025-07-03 | $618.00K derived: sum of 3 quarters · filed 2025-07-03 | $823.00K 10-K · filed 2025-07-03 | ||||
| 2024-01-31 | $1.77M derived: 10-Q 9 month − 10-Q 6 month · filed 2025-03-14 | $1.98M derived: sum of 2 quarters · filed 2025-03-14 | $2.18M 10-Q · filed 2025-03-14 | $914.00K derived: sum of 4 quarters · filed 2025-03-14 | ||||
| 2023-10-31 | $206.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2024-12-06 | $411.00K 10-Q · filed 2024-12-06 | $1.34M 10-Q · filed 2023-12-15 | -$859.00K derived: sum of 3 quarters · filed 2024-12-06 | -$156.00K derived: sum of 4 quarters · filed 2024-12-06 | |||
| 2023-07-31 | $205.00K 10-Q · filed 2024-09-13 | $828.00K 10-Q · filed 2023-09-14 | -$1.06M derived: sum of 2 quarters · filed 2024-09-13 | -$362.00K derived: sum of 3 quarters · filed 2024-09-13 | $639.00K derived: sum of 4 quarters · filed 2024-09-13 | |||
| 2023-04-30 | -$1.27M derived: 10-K 12 month − 10-Q 9 month · filed 2024-07-23 | -$567.00K derived: sum of 2 quarters · filed 2024-07-23 | $434.00K derived: sum of 3 quarters · filed 2024-07-23 | $1.06M 10-K · filed 2024-07-23 | $3.03M 10-K · filed 2023-07-31 | |||
| 2023-01-31 | $703.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2024-03-15 | $1.70M derived: sum of 2 quarters · filed 2024-03-15 | $2.33M 10-Q · filed 2024-03-15 | $2.30M 10-Q · filed 2023-03-16 | $2.79M derived: sum of 4 quarters · filed 2024-03-15 | |||
| 2022-10-31 | $1.00M derived: 10-Q 6 month − 10-Q 3 month · filed 2023-12-15 | $1.63M 10-Q · filed 2023-12-15 | $2.08M derived: sum of 3 quarters · filed 2023-12-15 | $2.79M derived: sum of 4 quarters · filed 2023-12-15 | ||||
| 2022-07-31 | $631.00K 10-Q · filed 2023-09-14 | $1.08M derived: sum of 2 quarters · filed 2023-09-14 | $1.79M derived: sum of 3 quarters · filed 2023-09-14 | $2.66M derived: sum of 4 quarters · filed 2023-09-14 | ||||
| 2022-04-30 | $452.00K derived: 10-K 12 month − 10-Q 9 month · filed 2023-07-31 | $1.16M derived: sum of 2 quarters · filed 2023-07-31 | $2.03M derived: sum of 3 quarters · filed 2023-07-31 | $2.35M 10-K · filed 2023-07-31 | ||||
| 2022-01-31 | $704.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2023-03-16 | $1.57M derived: sum of 2 quarters · filed 2023-03-16 | $1.90M 10-Q · filed 2023-03-16 | $1.85M 10-Q · filed 2022-03-15 | $2.84M derived: sum of 4 quarters · filed 2023-03-16 | |||
| 2021-10-31 | $870.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2022-12-15 | $1.20M 10-Q · filed 2022-12-15 | $2.14M derived: sum of 3 quarters · filed 2022-12-15 | $2.94M derived: sum of 4 quarters · filed 2022-12-15 | ||||
| 2021-07-31 | $326.00K 10-Q · filed 2022-09-14 | $1.27M derived: sum of 2 quarters · filed 2022-09-14 | $2.08M derived: sum of 3 quarters · filed 2022-09-14 | $3.06M derived: sum of 4 quarters · filed 2022-09-14 | ||||
| 2021-04-30 | $941.00K derived: 10-K 12 month − 10-Q 9 month · filed 2022-07-15 | $1.75M derived: sum of 2 quarters · filed 2022-07-15 | $2.73M derived: sum of 3 quarters · filed 2022-07-15 | $3.49M 10-K · filed 2022-07-15 | ||||
| 2021-01-31 | $808.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2022-03-15 | $1.79M derived: sum of 2 quarters · filed 2022-03-15 | $2.55M 10-Q · filed 2022-03-15 | $3.25M derived: sum of 4 quarters · filed 2022-03-15 | ||||
| 2020-10-31 | $981.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2021-12-14 | $1.74M 10-Q · filed 2021-12-14 | $2.45M derived: sum of 3 quarters · filed 2021-12-14 | $2.97M derived: sum of 4 quarters · filed 2021-12-14 | ||||
| 2020-07-31 | $763.00K 10-Q · filed 2021-09-10 | $1.47M derived: sum of 2 quarters · filed 2021-09-10 | $1.99M derived: sum of 3 quarters · filed 2021-09-10 | $2.77M derived: sum of 4 quarters · filed 2021-09-10 | ||||
| 2020-04-30 | $703.00K derived: 10-K 12 month − 10-Q 9 month · filed 2021-07-16 | $1.22M derived: sum of 2 quarters · filed 2021-07-16 | $2.01M derived: sum of 3 quarters · filed 2021-07-16 | $2.40M 10-K · filed 2021-07-16 | ||||
| 2020-01-31 | $521.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2021-03-12 | $1.30M derived: sum of 2 quarters · filed 2021-03-12 | $1.70M 10-Q · filed 2021-03-12 | $2.36M derived: sum of 4 quarters · filed 2021-03-12 | ||||
| 2019-10-31 | $783.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2020-12-11 | $1.18M 10-Q · filed 2020-12-11 | $1.18B 10-Q · filed 2019-12-13 | $1.83M derived: sum of 3 quarters · filed 2020-12-11 | $2.45M derived: sum of 4 quarters · filed 2020-12-11 | |||
| 2019-07-31 | $397.00K 10-Q · filed 2020-09-11 | $1.05M derived: sum of 2 quarters · filed 2020-09-11 | $1.67M derived: sum of 3 quarters · filed 2020-09-11 | $1.97M derived: sum of 4 quarters · filed 2020-09-11 | ||||
| 2019-04-30 | $655.00K derived: 10-K 12 month − 10-Q 9 month · filed 2020-07-17 | $1.27M derived: sum of 2 quarters · filed 2020-07-17 | $1.57M derived: sum of 3 quarters · filed 2020-07-17 | $1.89M 10-K · filed 2020-07-17 | ||||
| 2019-01-31 | $613.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2020-03-12 | $915.00K derived: sum of 2 quarters · filed 2020-03-12 | $1.23M 10-Q · filed 2020-03-12 | $1.66M derived: sum of 4 quarters · filed 2020-03-12 | ||||
| 2018-10-31 | $302.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2019-12-13 | $620.00K 10-Q · filed 2019-12-13 | $720.00K 10-Q · filed 2018-12-14 | $1.05M derived: sum of 3 quarters · filed 2019-12-13 | $1.76M derived: sum of 4 quarters · filed 2019-12-13 | |||
| 2018-07-31 | $318.00K 10-Q · filed 2019-09-13 | $745.00K derived: sum of 2 quarters · filed 2019-09-13 | $1.46M derived: sum of 3 quarters · filed 2019-09-13 | $1.68M derived: sum of 4 quarters · filed 2019-09-13 | ||||
| 2018-04-30 | $427.00K derived: 10-K 12 month − 10-Q 9 month · filed 2019-07-19 | $1.14M derived: sum of 2 quarters · filed 2019-07-19 | $1.36M derived: sum of 3 quarters · filed 2019-07-19 | $1.76M 10-K · filed 2019-07-19 | ||||
| 2018-01-31 | $716.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2019-03-15 | $938.00K derived: sum of 2 quarters · filed 2019-03-15 | $1.34M 10-Q · filed 2019-03-15 | $1.66M derived: sum of 4 quarters · filed 2019-03-15 | ||||
| 2017-10-31 | $222.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2018-12-14 | $620.00K 10-Q · filed 2018-12-14 | $720.00K 10-Q · filed 2017-12-15 | $948.00K derived: sum of 3 quarters · filed 2018-12-14 | $1.38M derived: sum of 4 quarters · filed 2018-12-14 | |||
| 2017-07-31 | $398.00K 10-Q · filed 2018-09-14 | $726.00K derived: sum of 2 quarters · filed 2018-09-14 | $1.16M derived: sum of 3 quarters · filed 2018-09-14 | $1.58M derived: sum of 4 quarters · filed 2018-09-14 | ||||
| 2017-04-30 | $328.00K derived: 10-K 12 month − 10-Q 9 month · filed 2018-07-20 | $762.00K derived: sum of 2 quarters · filed 2018-07-20 | $1.18M derived: sum of 3 quarters · filed 2018-07-20 | $1.48M 10-K · filed 2018-07-20 | ||||
| 2017-01-31 | $434.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2018-03-16 | $852.00K derived: sum of 2 quarters · filed 2018-03-16 | $1.15M 10-Q · filed 2018-03-16 | $1.67M derived: sum of 4 quarters · filed 2018-03-16 | ||||
| 2016-10-31 | $418.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2017-12-15 | $717.00K 10-Q · filed 2017-12-15 | $1.23M derived: sum of 3 quarters · filed 2017-12-15 | $1.62M derived: sum of 4 quarters · filed 2017-12-15 | ||||
| 2016-07-31 | $299.00K 10-Q · filed 2017-09-14 | $814.00K derived: sum of 2 quarters · filed 2017-09-14 | $1.20M derived: sum of 3 quarters · filed 2017-09-14 | $2.14M derived: sum of 4 quarters · filed 2017-09-14 | ||||
| 2016-04-30 | $515.00K derived: 10-K 12 month − 10-Q 9 month · filed 2017-07-21 | $901.00K derived: sum of 2 quarters · filed 2017-07-21 | $1.84M derived: sum of 3 quarters · filed 2017-07-21 | $1.84M 10-K · filed 2017-07-21 | ||||
| 2016-01-31 | $386.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2017-03-17 | $1.32M derived: sum of 2 quarters · filed 2017-03-17 | $1.32M 10-Q · filed 2017-03-17 | $2.71M derived: sum of 4 quarters · filed 2017-03-17 | ||||
| 2015-10-31 | $937.00K 10-Q · filed 2015-12-15 | $937.00K 10-Q · filed 2016-12-13 | $2.32M derived: sum of 3 quarters · filed 2016-09-14 | $2.78M derived: sum of 4 quarters · filed 2016-09-14 | ||||
| 2015-07-31 | $555.00K 10-Q · filed 2016-09-14 | $1.38M derived: sum of 2 quarters · filed 2016-09-14 | $1.84M derived: sum of 3 quarters · filed 2016-09-14 | $2.60M derived: sum of 4 quarters · filed 2016-09-14 | ||||
| 2015-04-30 | $828.00K derived: 10-K 12 month − 10-Q 9 month · filed 2016-07-27 | $1.29M derived: sum of 2 quarters · filed 2016-07-27 | $2.05M derived: sum of 3 quarters · filed 2016-07-27 | $2.05M 10-K · filed 2016-07-27 | ||||
| 2015-01-31 | $461.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2016-03-16 | $1.22M derived: sum of 2 quarters · filed 2016-03-16 | $1.22M 10-Q · filed 2016-03-16 | $1.82M derived: sum of 4 quarters · filed 2016-03-16 | ||||
| 2014-10-31 | $759.00K 10-Q · filed 2015-12-15 | $759.00K 10-Q · filed 2014-12-15 | $1.36M derived: sum of 3 quarters · filed 2015-12-15 | $1.89M derived: sum of 4 quarters · filed 2015-12-15 | ||||
| 2014-07-31 | $405.00K 10-Q · filed 2015-09-14 | $601.00K derived: sum of 2 quarters · filed 2015-09-14 | $1.13M derived: sum of 3 quarters · filed 2015-09-14 | $1.61M derived: sum of 4 quarters · filed 2015-09-14 | ||||
| 2014-04-30 | $196.00K derived: 10-K 12 month − 10-Q 9 month · filed 2015-07-29 | $722.00K derived: sum of 2 quarters · filed 2015-07-29 | $1.21M derived: sum of 3 quarters · filed 2015-07-29 | $1.76M 10-K · filed 2015-07-29 | ||||
| 2014-01-31 | $526.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2015-03-17 | $1.01M derived: sum of 2 quarters · filed 2015-03-17 | $1.57M 10-Q · filed 2015-03-17 | $2.06M derived: sum of 4 quarters · filed 2015-03-17 | ||||
| 2013-10-31 | $486.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2014-12-15 | $1.04M 10-Q · filed 2014-12-15 | $1.53M derived: sum of 3 quarters · filed 2014-12-15 | $2.00M derived: sum of 4 quarters · filed 2014-12-15 | ||||
| 2013-07-31 | $557.00K 10-Q · filed 2014-09-15 | $1.04M derived: sum of 2 quarters · filed 2014-09-15 | $1.51M derived: sum of 3 quarters · filed 2014-09-15 | $1.94M derived: sum of 4 quarters · filed 2014-09-15 | ||||
| 2013-04-30 | $487.00K derived: 10-K 12 month − 10-Q 9 month · filed 2014-07-29 | $958.00K derived: sum of 2 quarters · filed 2014-07-29 | $1.38M derived: sum of 3 quarters · filed 2014-07-29 | $1.75M 10-K · filed 2014-07-29 | $1.65M 10-K · filed 2013-07-26 | |||
| 2013-01-31 | $471.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2014-03-17 | $896.00K derived: sum of 2 quarters · filed 2014-03-17 | $1.27M 10-Q · filed 2014-03-17 | $1.71M derived: sum of 4 quarters · filed 2014-03-17 | ||||
| 2012-10-31 | $425.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2013-12-16 | $797.00K 10-Q · filed 2013-12-16 | $1.24M derived: sum of 3 quarters · filed 2013-12-16 | $1.67M derived: sum of 4 quarters · filed 2013-12-16 | ||||
| 2012-07-31 | $372.00K 10-Q · filed 2013-09-13 | $816.00K derived: sum of 2 quarters · filed 2013-09-13 | $1.25M derived: sum of 3 quarters · filed 2013-09-13 | $1.62M derived: sum of 4 quarters · filed 2013-09-13 | ||||
| 2012-04-30 | $444.00K derived: 10-K 12 month − 10-Q 9 month · filed 2013-07-26 | $873.00K derived: sum of 2 quarters · filed 2013-07-26 | $1.24M derived: sum of 3 quarters · filed 2013-07-26 | $1.65M 10-K · filed 2013-07-26 | ||||
| 2012-01-31 | $429.00K derived: 10-Q 9 month − 10-Q 6 month · filed 2013-03-14 | $800.00K derived: sum of 2 quarters · filed 2013-03-14 | $1.21M 10-Q · filed 2013-03-14 | |||||
| 2011-10-31 | $371.00K derived: 10-Q 6 month − 10-Q 3 month · filed 2012-12-13 | $779.00K 10-Q · filed 2012-12-13 | ||||||
| 2011-07-31 | $408.00K 10-Q · filed 2012-09-14 |