Sustainability Data (Non-Financial Information)
Environmental Management
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| ISO14001 certification rate | % | Niterra Group | 93 | 96 | 95 | 92 | 97 |
[Calculation Method] Percentage of employees at ISO 14001 certified locations
Environmental Accounting
Environmental conservation effect
| Content of the effect | Unit | Aggregation range | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|
| Revenue | Business revenue from recycling waste generated from business activities or recycling of used products, etc. | million yen | Niterra Co., Ltd. and Groups in Japan [with multi-site certification] |
749.1 | 730.8 |
| Cost reduction | Energy savings through energy conservation | million yen | 177.3 | 172 | |
| Saving on water bills through water conservation | million yen | 5.6 | 1.5 | ||
| Resource conservation or reduction of waste disposal costs associated with recycling. | million yen | 1.4 | 1.4 | ||
| Total | 933.4 | 905.6 | |||
Environmental conservation effect quantity
| Effects within the business area | Content of the effect | Unit | Aggregation range | 2024年度 | 2025年度 | Difference from the previous year | |
|---|---|---|---|---|---|---|---|
| The effects of resources invested in business activities | Energy consumption | Purchased electricity | 10,000 kWh | Niterra Co., Ltd. and Groups in Japan [with multi-site certification] |
22,472 | 26,503 | 4,031 |
| city gas | 10,000㎥ | 1,038 | 1,048 | 10 | |||
| LPG | Ton | 5,368 | 4,976 | -392 | |||
| Water usage | Water supply | ㎥ | 718,033 | 1,215,436 | 497,403 | ||
| well water | ㎥ | 394,028 | 382,072 | -11,956 | |||
| Volume of PRTR-listed substances handled | Ton | 781 | 1,032 | 251 | |||
| Effects on environmental impact and waste generated from business activities | Energy CO2 emissions | Ton | 139,825 | 149,750 | 9,925 | ||
| Amount of waste | Effective utilization | Ton | 9,118 | 11,201 | 2,083 | ||
| Unused amount | Ton | 140 | 109 | -31 | |||
| Emissions of PRTR-registered substances | Ton | 65 | 65 | 0 | |||
[Calculation Method] Energy consumption and CO2 emissions from energy: Energy consumption and CO2 emissions associated with transportation are not included.
Environmental data
| Unit | Range | EcoVision Standard Values (2018) |
2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | ||
|---|---|---|---|---|---|---|---|---|---|
| Water | Usage amount | 10,000㎥ | Niterra Group | ー | 165 | 161 | 146 | 154 | 208 |
| (Unit cost) | Ten thousand m³/million yen | Niterra Group | 5.40 | 4.92 | 4.40 | 3.75 | 3.91 | 5.26 | |
| Emissions | 10,000㎥ | Niterra Group | ー | 165 | 161 | 146 | 154 | 208 | |
| Waste | Total emissions | t | Niterra Group | ー | 22,686 | 21,188 | 20,742 | 20,332 | 22,470 |
| (Unit cost) | t/million yen | Niterra Group | 0.075 | 0.068 | 0.058 | 0.053 | 0.051 | 0.057 | |
| Effective use | t | Niterra Group | ー | 20,712 | 19,344 | 18,711 | 18,415 | 21,561 | |
| Ineffective use | t | Niterra Group | ー | 1,974 | 1,843 | 2,196 | 1,917 | 909 | |
| Effective utilization rate | % | Niterra Group | ー | 91.3 | 91.3 | 89.5 | 90.6 | 96.0 | |
| Number of on-site inspections by processing companies | cases | Niterra Co., Ltd. and Groups in Japan | ー | 39 | 63 | 42 | 32 | 34 | |
| PRTR target substances | Volume handled | t | Niterra Co., Ltd. and Groups in Japan | ー | 755.0 | 865.0 | 740.5 | 724.8 | 1,032.2 |
| Emissions | t | Niterra Co., Ltd. and Groups in Japan | ー | 139.1 | 151.6 | 85.6 | 65.0 | 91.4 | |
| (Toluene emissions) | t | Niterra Co., Ltd. and Groups in Japan | ー | 129.3 | 214.8 | 83.5 | 63.7 | 90.9 | |
| (Xylene emissions) | t | Niterra Co., Ltd. and Groups in Japan | ー | 1.0 | 1.1 | 0.4 | 0.0 | 0.0 | |
| (Other emissions) | t | Niterra Co., Ltd. and Groups in Japan | ー | 8.8 | 6.7 | 1.8 | 1.3 | 0.5 | |
| Energy | Total consumption | MWh | Niterra Group | ー | 823,783 | 736,554 | 685,477 | 705,521 | 779,087 |
| Non-renewable energy consumption | MWh | Niterra Group | ー | 823,783 | 674,410 | 600,956 | 575,907 | 617,454 | |
| (Fuel) | MWh | Niterra Group | ー | 338,530 | 275,900 | 251,348 | 255,796 | 251,239 | |
| (Electricity) | MWh | Niterra Group | ー | 485,252 | 398,510 | 349,608 | 320,111 | 366,215 | |
| Renewable energy consumption | MWh | Niterra Group | ー | 2,024 | 64,634 | 93,070 | 129,614 | 161,634 | |
| (Purchase) | MWh | Niterra Group | ー | 0 | 62,144 | 84,520 | 118,726 | 143,634 | |
| (Self-generated power) | MWh | Niterra Group | ー | 2,024 | 2,490 | 8,549 | 10,888 | 18,000 | |
| GHG emissions | Scope 1 | million t-CO2 | Niterra Group | 6.96 | 6.44 | 5.29 | 4.80 | 4.58 | 4.49 |
| Scope 2 | million t-CO2 | Niterra Group | 21.0 | 20.1 | 16.1 | 14.3 | 14.5 | 15.9 | |
| Scope 1 + Scope 2 | million t-CO2 | Niterra Group | 27.9 | 26.5 | 21.4 | 19.1 | 19.1 | 20.3 | |
| (Reduction rate compared to FY2018*) | % | Niterra Group | ー | -8.2 | -26.0 | -31.5 | -31.7 | -31.9 | |
| (Unit cost) | t-CO2/million yen | Niterra Group | ー | 0.79 | 0.59 | 0.49 | 0.48 | 0.45 | |
[Calculation method]
Scope 1: Calculated using coefficients from the Act on Promotion of Global Warming Countermeasures.
Scope 2: In Japan, the coefficients of each power company are used for calculation; overseas, the coefficients of each country published by the IEA are used.
*In calculating the reduction rate, the base year emissions are reviewed annually to reflect increases or decreases in group companies.
Details of Scope 3 emissions
| Item | Unit | Range | EcoVision Standard Values (2018) |
2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 |
|---|---|---|---|---|---|---|---|---|
| 1. Purchased goods and services | million t-CO2 | Niterra Group | 115.3 | 169.03 | 197.48 | 179.00 | 208.04 | 247.20 |
| 2. Capital goods | 19.6 | 11.49 | 7.86 | 9.25 | 13.60 | 10.80 | ||
| 3. Fuel and energy-related activities (excluding Scope 1 and 2) | 4.3 | 4.60 | 4.34 | 4.13 | 4.15 | 4.60 | ||
| 4. Upstream transportation and logistics | 16.6 | 15.03 | 8.75 | 6.14 | 6.32 | 11.20 | ||
| 5. Waste generated from the business | 0.6 | 0.77 | 0.78 | 0.91 | 0.29 | 0.40 | ||
| 6. Business trip | 0.2 | 0.21 | 0.21 | 0.21 | 0.20 | 0.20 | ||
| 7. Employees' Commuting | 2.0 | 1.47 | 1.46 | 1.45 | 1.41 | 1.60 | ||
| 8. Upstream leased assets | ー | Not applicable | ||||||
| 9. Downstream transportation and logistics | ー | (Included in Category 4) | ||||||
| 10. Processing of products for sale | ー | Not applicable | ||||||
| 11. Use of the products sold | 970.32 | 939.95 | 909.10 | 749.36 | 743.50 | 884.60 | ||
| 12. End-of-production processing for sold products | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.10 | ||
| 13. Downstream leased assets | ー | Not applicable | ||||||
| 14. Franchise | ー | Not applicable | ||||||
| 15. Investment | ー | Not applicable | ||||||
| Total | 1,128.9 | 1,143 | 1,130 | 951 | 978 | 1,161 | ||
[Calculation method]
1: Calculated by multiplying the quantity of procured goods purchased by the corresponding value in the emission intensity database.
2. Calculated by multiplying expenditures for the acquisition of tangible fixed assets and intangible assets (financial statements) by the corresponding value from the "Emission Intensity Database for Calculating Greenhouse Gas Emissions of Organizations Through the Supply Chain."
3. Calculated by multiplying the amount of electricity used by the corresponding value from the "Emission Intensity Database for Calculating Greenhouse Gas Emissions, etc., of Organizations Through the Supply Chain." Calculated by multiplying the amount of gas used by the corresponding value from the "IDEA LCA Database."
4. For domestic transport, the calculation is performed by multiplying the equivalent volume of procurement transport and the volume of shipment transport by the corresponding values from the "Database of Emission Intensity for Calculating Greenhouse Gas Emissions, etc., of Organizations Through the Supply Chain." For international transport, the calculation is performed by multiplying the equivalent volume of procurement transport and the volume of shipment transport by the corresponding values from the "IDEA LCA Database."
5. Calculate by multiplying the waste generation amount by the corresponding value from the "Emission Intensity Database for Calculating Greenhouse Gas Emissions of Organizations Through the Supply Chain" or the "IDEA LCA Database".
6. The calculation is performed by multiplying the number of employees of each corporation by the corresponding value from the "Database of Emission Intensity for Calculating Organizational Greenhouse Gas Emissions, etc., Through the Supply Chain."
7. The estimated fuel consumption, calculated from the number of employees and commuting expenses, is multiplied by the "emission intensity of the Act on Promotion of Global Warming Countermeasures" for gasoline and the corresponding value from the "Emission Intensity Database for Calculating Greenhouse Gas Emissions of Organizations Through the Supply Chain" for other fuels.
11: Calculated by multiplying the energy consumption per unit time of the sold product by the number shipped and the service life. For plugs, the LCA tool of the Japan Auto Parts Industries Association was used; for sensors, the gasoline CO2 emission factor under the Act on Promotion of Global Warming Countermeasures was used; and for other products, the electricity CO2 emission factor of the IEA was used.
12: Calculated by multiplying the estimated product shipment weight by the corresponding value from the "Emission Intensity Database for Calculating Greenhouse Gas Emissions, etc., of Organizations Through the Supply Chain".
Regional emission rates for fiscal year 2025
| Item | Unit | Japan | Asia | North America | South America | Europe | Africa | |
|---|---|---|---|---|---|---|---|---|
| Water | Usage amount | 10,000㎥ | 164 | 29 | 2 | 12 | 1 | 0 |
| ratio | % | 79.0 | 14.0 | 1.0 | 5.6 | 0.3 | 0.1 | |
| Emissions | 10,000㎥ | 164 | 29 | 2 | 12 | 1 | 0 | |
| ratio | % | 79.0 | 14.0 | 1.0 | 5.6 | 0.3 | 0.1 | |
| Waste | Emissions | t | 12351 | 4640 | 1875 | 2967 | 584 | 53 |
| ratio | % | 55.0 | 20.7 | 8.3 | 13.2 | 2.6 | 0.2 | |
| CO2 | Emissions | million t-CO2 | 221625.3 | 15781.5 | 17282.5 | 1645.8 | 4840.5 | 631.7 |
| ratio | % | 84.7 | 6.0 | 6.6 | 0.6 | 1.8 | 0.2 |
Waste plastic emissions from domestic group companies
| Unit | Range | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|
| Plastic waste output | t | Niterra Co., Ltd. | 51.3 | 40.3 | 33.2 | 24.9 |
| SparkTec WKS CO., LTD. | 50.1 | 47.7 | 52.8 | 48.6 | ||
| NTK CERAMIC CO., LTD. | 237.1 | 110.1 | 27.8 | 27.8 | ||
| CERAMIC SENSOR CO., LTD. | 101.5 | 101.5 | 63.6 | 55.3 | ||
| NITTOKU ALPHA SERVICE CO., LTD. | 0.9 | 0.4 | 0.8 | 0.9 | ||
| NTK CERATEC CO., LTD. | 31.6 | 186.9 | 30.2 | 37.1 | ||
| MORIMURA SOFC TECHNOLOGY Co., Ltd. | 1.7 | 1.2 | 1.8 | 1.8 | ||
| CECYLLS | 6.9 | 0.4 | 1 | 0 | ||
| NITTOKU SMILE CO., LTD. | 0.2 | 0.2 | 0.2 | 0.1 | ||
| Niterra Materials | ー | ー | ー | 14 |
Compliance with environmental laws and regulations
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Environmental violations | cases | Niterra Group | 2 | 2 | 0 | 1 | 2※ |
| Environmental fines | yen | Niterra Group | 0 | 1 | 0 | 0 | 0 |
| Environmental complaints | cases | Niterra Group | 4 | 1 | 1 | 1 | 0 |
*One of these cases exceeded the agreed-upon value with the city.
Design for Environment (DfE)
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Sales ratio of precious metal plugs | % | Niterra Group | 40 | 43 | 47 | 46 | 46 |
| Sales ratio of all-range air-fuel ratio sensors | % | Niterra Group | 37 | 39 | 40 | 41 | 43 |
*The goal is to achieve a sales ratio of "50% or more" for both "precious metal spark plugs" and "all-range air-fuel ratio sensors" by fiscal year 2030.
Human Resource Management
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | ||
|---|---|---|---|---|---|---|---|---|
| Number of employees * as of March 31 | people | Group Consolidated * IFRS standards |
16,145 | 16,247 | 15,980 | 15,644 | 15,698 | |
| people | Niterra Co., Ltd. | 3,617 | 3,554 | 3,431 | 3,295 | 3,341 | ||
| Number of temporary workers * (as of March 31) | people | Niterra Co., Ltd. | 108 | 121 | 131 | 91 | 93 | |
| Average age * as of March 31 | Male | age | Niterra Co., Ltd. | 41.5 | 41.4 | 42.1 | 42.7 | 43.1 |
| Female | age | Niterra Co., Ltd. | 39.6 | 39.5 | 40.0 | 40.7 | 41.7 | |
| Total | age | Niterra Co., Ltd. | 41.0 | 41.1 | 41.8 | 42.3 | 42.9 | |
| Average length of service * (as of March 31) | Male | year | Niterra Co., Ltd. | 16.7 | 19.8 | 17.8 | 18.0 | 17.7 |
| Female | year | Niterra Co., Ltd. | 16.9 | 17.3 | 17.1 | 17.0 | 16.7 | |
| Total | year | Niterra Co., Ltd. | 16.7 | 19.3 | 17.7 | 17.8 | 17.5 | |
| Average annual salary | yen | Niterra Co., Ltd. | 6,725,908 | 6,896,899 | 7,690,504 | 8,473,873 | 9,221,112 | |
| yen | Niterra Co., Ltd. (Regular employees excluding those on leave) | 7,402,134 | 7,631,714 | 8,313,518 | 9,121,251 | 9,516,320 | ||
| yen | Niterra Co., Ltd. (Regular employees excluding limited-area employees, employees working shorter hours, and employees on leave). | 7,737,761 | 7,990,375 | 8,940,448 | 9,874,069 | 9,929,045 | ||
| Number of people leaving the company | Male | people | Niterra Co., Ltd. | 140 (うち転籍者45名) |
194 (うち転籍者97名) |
206 (うち転籍者87名) |
194 (うち転籍者116名) |
142 (うち転籍者35名) |
| Female | people | Niterra Co., Ltd. | 37 (うち転籍者3名) |
26 (うち転籍者13名) |
30 (うち転籍者3名) |
15 (うち転籍者4名) |
19 (うち転籍者1名) |
|
| Total | people | Niterra Co., Ltd. | 177 (うち転籍者48名) |
220 (うち転籍者110名) |
235 (うち転籍者90名) |
209 (うち転籍者120名) |
161 (うち転籍者36名) |
|
| Turnover rate | Total turnover rate | % | Niterra Co., Ltd. | 4.71 | 6.27 | 4.26 | 5.40 | 4.82 |
| Voluntary turnover rate | % | Niterra Co., Ltd. | 3.51 | 3.29 | 2.97 | 2.49 | 2.13 | |
| Number of new graduates hired | Male | people | Niterra Co., Ltd. | 40 | 21 | 29 | 27 | 27 |
| Female | people | Niterra Co., Ltd. | 21 | 13 | 14 | 28 | 7 | |
| Total | people | Niterra Co., Ltd. | 61 | 34 | 43 | 55 | 34 | |
| Among them, foreign nationals | people | Niterra Co., Ltd. | 6 | 2 | 1 | 1 | 5 | |
| Number of mid-career hires | Male | people | Niterra Co., Ltd. | 30 | 34 | 42 | 34 | 25 |
| Female | people | Niterra Co., Ltd. | 3 | 6 | 11 | 8 | 8 | |
| Total | people | Niterra Co., Ltd. | 33 | 40 | 53 | 42 | 33 | |
| Among them, foreign nationals | people | Niterra Co., Ltd. | 0 | 0 | 2 | 2 | 2 | |
| We are hiring for management positions. | people | Niterra Co., Ltd. | 8 | 13 | 12 | 11 | 11 | |
| Employee engagement | Response rate | % | Niterra Co., Ltd., and Groups in Japan |
87.6 | 92.6 | 96.3 | 96.2 | 97.7 |
| Overall satisfaction level (out of 5 points) | point | Niterra Co., Ltd., and Groups in Japan |
3.30 | 3.33 | 3.46 | 3.48 | 3.50 | |
[Calculation Method] Average age and average length of service: As of March 31st. Calculated for full-time employees only.
Average annual salary: including bonuses and non-base pay.
Turnover rate (total turnover rate): Calculated from the total number of employees who leave the company, including those who retire.
Employee turnover rate (voluntary resignation rate): Calculated from the number of employees who leave the company for personal reasons.
Human Resource Development
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Average training hours | time | Niterra Co., Ltd., and Groups in Japan |
4 | 11 | 12 | 13 | 14 |
| Average amount spent | yen | Niterra Co., Ltd., and Groups in Japan |
10,809 | 14,641 | 22,378 | 23,018 | 41,018 |
[Calculation Method] This method covers training programs organized by the Human Resources Department (hierarchical training, global training, etc.).
Diversity
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | ||
|---|---|---|---|---|---|---|---|---|
| Full-time employee | Male | people | Niterra Co., Ltd. | 3,017 | 2,947 | 2,832 | 2,684 | 2,698 |
| Female | people | Niterra Co., Ltd. | 600 | 607 | 599 | 611 | 643 | |
| Female ratio | % | Niterra Co., Ltd. | 16.6 | 17.1 | 17.5 | 18.5 | 19.2 | |
| Management position (Core position) *1 |
Male | people | Niterra Co., Ltd. | 780 | 672 | 713 | 716 | 717 |
| Female | people | Niterra Co., Ltd. | 26 | 35 | 41 | 42 | 42 | |
| Female ratio | % | Niterra Co., Ltd. | 3.23 | 4.95 | 5.44 | 5.54 | 5.53 | |
| Percentage of female managers, foreign nationals, and mid-career hires*2 | % | Niterra Co., Ltd. | 17.0 | 19.9 | 24.9 | 26.4 | 26.9 | |
| % | Niterra Co., Ltd. and Groups in Japan | ー | ー | ー | ー | 27.0 | ||
| Section Chief level | Male | people | Niterra Co., Ltd. | 1,024 | 968 | 955 | 1,008 | 1,000 |
| Female | people | Niterra Co., Ltd. | 47 | 48 | 58 | 64 | 64 | |
| Female ratio | % | Niterra Co., Ltd. | 4.39 | 4.96 | 5.73 | 5.97 | 6.02 | |
| Equivalent to a generalist position | Male | people | Niterra Co., Ltd. | 1,383 | 1,209 | 1,050 | 998 | 985 |
| Female | people | Niterra Co., Ltd. | 255 | 217 | 247 | 254 | 253 | |
| Female ratio | % | Niterra Co., Ltd. | 15.6 | 15.2 | 19.0 | 20.3 | 20.4 | |
| Employment rate for people with disabilities | % | Niterra Co., Ltd., SparkTec WKS, CERAMIC CENSOR, NTK CERAMIC, Niterra Advanced Ceramic, NTK CERATEC, NITTOKU SMILE, Niterra Materials | 2.36 | 2.59 | 2.75 | 2.71 | 2.70 | |
| Employees Age group |
Under 30 | % | Niterra Co., Ltd. | 17 | 16 | 14 | 12 | 11 |
| 30 years old and over, under 50 years old | % | Niterra Co., Ltd. | 61 | 59 | 60 | 60 | 61 | |
| Over 50 years old | % | Niterra Co., Ltd. | 22 | 25 | 26 | 28 | 28 | |
| Continued Employees | people | Niterra Co., Ltd. | 132 | 120 | 149 | 138 | 143 | |
[Calculation method]
Regular employees: Includes those seconded to group companies.
Managerial positions, section chief level, and generalist positions: Includes employees seconded to group companies and those whose employment continues.
Employment rate for persons with disabilities: Includes employees seconded to group companies and employees of special subsidiary companies.
Employee age range: Includes employees seconded to group companies.
Continued employment: Includes employees seconded to group companies.
Calculated as of the end of March. However, for management positions (core positions), the ratio of female, foreign national, and career-hired managers, section chief level, and generalist positions, the calculations for fiscal year 2024 and earlier are as of April 1st of the following year.
*1: The goal is to increase the "percentage of female managers" (on a non-consolidated basis) to 10% or more by fiscal year 2029.
*2: The goal is to increase the "percentage of women, foreign nationals, and career hires in management positions" (consolidated domestic group) to 30% or more by fiscal year 2029.
*For information regarding our management (core) role grading system, please refer to Human Resources Management.
Percentage of women by social class
| Unit | Range | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|
| Directors (As of April 1st) |
% | Niterra Co., Ltd. | 36.0 | 36.4 | 36.4 | 27.3 |
| Excutive officers and Corporate officers (As of April 1st) |
% | Niterra Co., Ltd. | 0.00 | 3.57 | 3.84 | 3.57 |
| All Managers (As of April 1st of the following year until fiscal year 2023; as of March 31st from fiscal year 2024 onwards) |
% | Niterra Co., Ltd. | 4.95 | 5.44 | 5.66 | 5.53 |
| Senior Managers (As of April 1st of the following year until fiscal year 2023; as of March 31st from fiscal year 2024 onwards) |
% | Niterra Co., Ltd. | 3.26 | 3.03 | 2.45 | 2.01 |
| Supervisors (As of April 1st of the following year until fiscal year 2023; as of March 31st from fiscal year 2024 onwards) |
% | Niterra Co., Ltd. | 4.96 | 5.73 | 5.84 | 6.02 |
Gender wage gap in domestic group companies in fiscal year 2025
| Unit | Range | Wage differences between men and women in regular employment | Wage differences between men and women in non-regular employment | Gender wage gap for all workers | |
|---|---|---|---|---|---|
| Gender wage gap | % | Niterra Co., Ltd. | 67.2% | 92.9% | 68.4% |
| SparkTec WKS CO., LTD. | 76.3% | 96.3% | 77.2% | ||
| CERAMIC SENSOR CO., LTD. | 72.9% | 82.5% | 74.1% | ||
| NTK CERATEC CO., LTD. | 67.5% | 67.7% | 65.0% | ||
| NTK CERAMIC CO., LTD. | 61.1% | 60.7% | 52.2% | ||
| Niterra Advanced Ceramic Co., Ltd. | 70.8% | 85.0% | 71.7% | ||
| Niterra Materials | 79.3% | 102.1% | 81.3% |
*1: Wages include all payments made by the employer to the employee for the work performed. Severance pay and commuting allowances are excluded.
*2: For regular employees, seconded employees are included in the original company that pays their wages.
*3: Non-regular employees include those rehired after retirement, part-timers, contract employees, and commissioned workers, but exclude dispatched workers.
*4: The target companies are domestic consolidated subsidiaries with 101 or more regularly employed workers.
Work-Life Balance
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | ||
|---|---|---|---|---|---|---|---|---|
| Childbirth and childcare | Employees taking maternity leave | people | Niterra Co., Ltd. | 30 | 23 | 26 | 25 | 30 |
| Male employees taking childcare leave | people | Niterra Co., Ltd. | 24 | 55 | 69 | 66 | 82 | |
| Average number of days taken (male) | day | Niterra Co., Ltd. | ー | ー | ー | ー | 88 | |
| Female employees taking childcare leave | people | Niterra Co., Ltd. | 35 | 25 | 24 | 24 | 33 | |
| Average number of days taken (female) | day | Niterra Co., Ltd. | ー | ー | ー | ー | 305 | |
| Childcare leave utilization rate (women) | % | Niterra Co., Ltd. | ー | 100 | 100 | 100 | 100 | |
| Return-to-work rate after childcare leave | % | Niterra Co., Ltd. | 94 | 98 | 100 | 100 | 98 | |
| Childcare short-time work system User |
people | Niterra Co., Ltd. | 23 | 26 | 17 | 21 | 22 | |
| Nursing care | Employees taking caregiving leave | people | Niterra Co., Ltd. | 2 | 2 | 1 | 1 | 3 |
| Users of the reduced working hours system for caregiving | people | Niterra Co., Ltd. | 1 | 1 | 0 | 1 | 0 | |
| Users of the reduced working hours system for reasons other than childcare or elder care. | people | Niterra Co., Ltd. | 4 | 4 | 3 | 4 | 14 | |
| Working hours | Standard working hours | Time/Year/Person | Niterra Co., Ltd. | 1,899 | 1,899 | 1,899 | 1,899 | 1,899 |
| Actual working hours | Time/Year/Person | Niterra Co., Ltd. | 1,955 | 1,834 | 1,848 | 1,830 | 1,889 | |
| Average monthly overtime hours | Hours/Month | Niterra Co., Ltd. | 11 | 15 | 15 | 15 | 13 | |
| Paid holiday | Number of days granted | day | Niterra Co., Ltd. | 19.5 | 19.5 | ー | 19.5 | 19.4 |
| Number of days obtained | day | Niterra Co., Ltd. | 15.0 | 15.0 | ー | 16.0 | 17.0 | |
| Acquisition rate | % | Niterra Co., Ltd. | 75.6 | 76.8 | ー | 82.5 | 87.6 | |
| Labor union membership rate * (as of March 31) | % | Niterra Co., Ltd. Spark Tech WKS, NTK Ceratec, NTK Ceramics, Niterra Advanced Ceramics, Niterra AQUA | 94 | 98 | 100 | 100 | 100 | |
[Calculation method]
Number of employees taking maternity, childcare, or family care leave: Number of employees who started leave during the fiscal year.
Return-to-work rate after childcare leave: The percentage of people who returned to work after their childcare leave period expired during the fiscal year.
Users of the childcare/elderly care short-time work system: Number of people who newly started using the system during the fiscal year.
Working hours: Excluding employees seconded to group companies and those on leave of absence.
Paid leave: Calculated based on a fiscal year from October to September of the following year (e.g., the 2019 fiscal year is the one year from October 2019 to September 2020).
Excluding employees seconded to group companies and those on leave of absence.
The rate at which men in our domestic group companies take childcare leave.
| Unit | Range *2 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|
| Rate of men taking paternity leave | % | Niterra Co., Ltd. | 52 | 60 | 78 | 83 |
| SparkTec WKS CO., LTD. | 34 | 45 | 55 | 65 | ||
| CERAMIC SENSOR CO., LTD. | 65 | 50 | 75 | 75 | ||
| NTK CERATEC CO., LTD. | 47 | 55 | 63 | 60 | ||
| NTK CERAMIC CO., LTD. | 25 | 67 | 100 | 67 | ||
| NANSEI CERAMIC CO., LTD. | ー ※1 | ー ※1 | 50 | 100 |
*1: Not listed because the number of men whose spouse gave birth was zero.
*2: The target companies are domestic consolidated subsidiaries with 101 or more regularly employed workers.
[Calculation method]
The percentage of men taking paternity leave (%) = (Number of men who took paternity leave, etc.) ÷ (Number of men whose spouses gave birth) × 100
Occupational Health and Safety
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| ISO45001 certification rate | % | Niterra Group | 48.4 | 72.2 | 88.2 | 96.8 | 97.3 |
[Calculation Method] Percentage of employees at ISO 14001 certified locations
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | ||
|---|---|---|---|---|---|---|---|---|
| Total accident frequency rate | ー | Niterra Co., Ltd. (Including temporary staff) |
0.90 | 0.42 | 0.69 | 1.04 | 0.59 | |
| ー | Group companies | ー | 2.24 | 2.83 | 2.83 | 2.58 | ||
| Loss of work due to injury frequency | Total | ー | Niterra Co., Ltd. | 0.13 | 0.00 | 0.14 | 0.30 | 0.29 |
| Employee | ー | Niterra Co., Ltd. | 0.13 | 0.00 | 0.14 | 0.30 | 0.29 | |
| Temporary worker | ー | Niterra Co., Ltd. | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Occupational illness frequency rate | ー | Niterra Co., Ltd. (Including temporary staff) |
0.00 | 0.00 | 0.00 | 0.14 | 0.00 | |
[Calculation method]
Total accident frequency rate: Total number of accident victims per 1 million working hours
Total accident frequency rate = Total number of victims of work-related accidents ÷ Total working hours × 1 million hours
Lost-of-work injury frequency rate: Number of lost-of-work injuries per 1 million working hours.
Loss of work due to injury/disability = Number of victims of injury/disability due to injury/disability ÷ Total working hours × 1 million hours
Occupational illness frequency rate: Number of employees absent from work due to occupational illness per 1 million working hours.
Occupational illness rate = Number of employees absent due to occupational illness* ÷ Total working hours × 1 million hours
* "Occupational illness" refers to heatstroke, lower back pain, chemical poisoning, and other occupational illnesses as defined by the Ministry of Health, Labour and Welfare.
Number of work-related accidents
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Loss of work due to injury | cases | Niterra Co., Ltd. | 1 | 0 | 1 | 2 | 2 |
| Group companies | 7 | 12 | 12 | 8 | 8 | ||
| Overseas group companies | 24 | 8 | 8 | 14 | 21 | ||
| Non-working injuries | cases | Niterra Co., Ltd. | 6 | 3 | 4 | 5 | 2 |
| Group companies | 10 | 15 | 17 | 22 | 22 | ||
| Overseas group companies | 8 | 6 | 4 | 9 | 8 |
Number of work-related fatalities
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | ||
|---|---|---|---|---|---|---|---|---|
| Number of fatalities | Employee | people | Niterra Group | 0 | 0 | 0 | 0 | 0 |
| Contractor | people | 0 | 0 | 0 | 0 | 0 | ||
Number of participants in occupational safety and health-related training
| Unit | Range | 2022年度 | 2023年度 | 2024年度 | 2025年度 | ||
|---|---|---|---|---|---|---|---|
| Participants in safety and health training programs by hierarchical level | Safety and health training for employees in their third year of service. | people | Niterra Co., Ltd. and Groups in Japan | 295 | 140 | 121 | 100 |
| Safety and health training for employees with 10 years of service. | 240 | 145 | 161 | 140 | |||
| Safety and health training for section chiefs and supervisors | 110 | 220 | 184 | 140 | |||
| Safety and health training for newly appointed managers | 70 | 72 | 71 | 59 | |||
| Participants in safety and health specialist training | Chemicals education for workers | 73 | 128 | 94 | 140 | ||
| Chemical Substances Education for Administrators | 86 | 130 | 129 | 92 | |||
| Total | 874 | 835 | 760 | 671 | |||
Product quality
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Number of recalled vehicles | stand | Niterra Group | 0 | 0 | 0 | 0 | 0 |
| Costs incurred due to recalls implemented in the relevant fiscal year. | yen | 0 | 0 | 0 | 0 | 0 | |
| Number of vehicles that were forcibly recalled | stand | 0 | 0 | 0 | 0 | 0 | |
| The ratio of recall costs to annual revenue. | % | 0 | 0 | 0 | 0 | 0 |
Social Contribution
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Cash donation | million yen | Niterra Group | 464.8 | 476.7 | 967.1 | 846.3 | 1,009.0 |
| Time: Employee volunteers during working hours | 10.6 | 38.1 | 20.1 | 8.7 | 46.1 | ||
| In-kind donations: Donations of products or services, etc. | 11.3 | 65.6 | 4.0 | 16.6 | 39.7 | ||
| Management costs | 0.01 | 7.11 | 0.00 | 0.00 | 7.40 | ||
| Total | 486.7 | 587.6 | 991.2 | 871.6 | 1,102.2 |
Communication with Stakeholders
| Stakeholders | Communication | Main initiatives | Dates, frequency, number of participants, etc. / Annual | |||
|---|---|---|---|---|---|---|
| 2022年度 | 2023年度 | 2024年度 | 2025年度 | |||
| Shareholders and investors | In addition to complying with legal disclosure standards, we will promptly disclose information to various media outlets and publish it on our website. | ● Holding of the Ordinary General Meeting of Shareholders | June | June | June | June |
| ● Individual meetings with institutional investors and securities analysts | 235 times* | 279 times* | 281 times* | 330 times* | ||
| ● Earnings briefing for institutional investors and securities analysts | 2回 | 2回 | 2回 | 2回 | ||
| ● Earnings conference call for institutional investors and analysts | 4 times (Total of 310 people) |
4回 (延べ402名) |
4回 (延べ394名) |
4回 (延べ417名) |
||
| ● ESG briefing for institutional investors and securities analysts | 1回 | 1回 | 0回 | 1回 | ||
| ● Online briefing session for individual investors | 1 time (724 people in total) |
2回 (延べ2,260名) |
1回 (延べ315名) |
0回 | ||
| ● Issuance of shareholder newsletters | 1回 | 1回 | 1回 | 1回 | ||
| ● Issuance of an integrated report | September | September | September | September | ||
| ● Information dissemination via website | From time to time | |||||
| Customer | To ensure that you can purchase and use our products and services with confidence, we strive to provide information from the customer's perspective on our website, at exhibitions, and other venues. | ● Communication through sales activities | From time to time | |||
| ● Disseminating information via website (products, events, etc.) | From time to time | |||||
| ● Product and technology explanations at exhibitions | From time to time | |||||
| ● Communication at event venues such as races | From time to time | |||||
| Our business partners | To build a trusting and healthy partnership with our business partners and to grow together, we conduct activities such as company policy briefings throughout the supply chain. | ● Communication through daily procurement activities | From time to time | |||
| ● Holding of company policy briefing sessions | May | May | May | May | ||
| ● On-site practical training and seminars | 7 courses | 11 courses | 13 courses | 12 courses | ||
| Local community | At our offices around the world, we respect local cultures and customs, strive to communicate smoothly with local communities, and, as members of society, aim to create a comfortable society by participating in various social contribution activities. | ● Communication through informal meetings and events | From time to time | |||
| ● Participation in local events (festivals, etc.) | From time to time | |||||
| ● Conducting cleaning activities | From time to time (Total of 459 people) |
随時 (延べ511名) |
From time to time (Total of 408 people) |
随時 (延べ214名) |
||
| ● Accepting factory tours related to the environment | From time to time (Total of 188 people) |
随時 (延べ589名) |
随時 (延べ685名) |
From time to time (189 people) |
||
| ● Discussion meeting on environmental issues | From time to time (Total of 5 people) |
随時 (延べ20名) |
随時 (延べ6名) |
From time to time (6 people) |
||
| ● Communication through culture and sports | ー | ー | ー | ー | ||
| ・NGK Spark Plugs Suzuka 2&4 Race | April | April | March | ー | ||
| ・Niterra Co., Ltd./ FC Gifu Children's Soccer School | September | December | January | ー | ||
| ・Family musical at Niterra Hall | December | December | December | December | ||
| ・Marathon Festival Nagoya, Aichi | March | March | March | March | ||
| ● Information dissemination via website (environmental information, etc.) | From time to time | |||||
| Employee | To maintain a safe and healthy work environment and to ensure that employees can work with enthusiasm, management actively visits the workplace and makes an effort to engage in dialogue. | ● Daily work and workplace communication | From time to time | |||
| ● Publication of company newsletter | Web: Anytime | Web: Anytime | Web: Anytime | Web: Anytime | ||
| ● Holding of various labor-management consultation meetings | From time to time | |||||
| ● Utilizing the Corporate Ethics Helpline (for employees) | 97 items reception |
111 items reception |
107 items reception |
125 items reception |
||
| ● Implementation of various training programs | From time to time | |||||
| ● Conducting employee satisfaction surveys | All employees October to November |
All employees October to December |
All employees October to November |
All employees november |
||
*Details of individual meetings with institutional investors and securities analysts in FY2025
[By conversation partner]
| Dialogue partner | Number of times |
|---|---|
| Securities analyst | 57回 |
| Domestic institutional investors | 69回 |
| Overseas institutional investors | 204回 |
| Total | 330回 |
[By person handling the case]
| Respondent | Number of times |
|---|---|
| President | 27回 |
| Member of the Board | 67回 |
| Sustainability Department | 2回 |
| IR department | 234回 |
| Total | 330回 |
Corporate Governance
Board of Directors meeting status
| Unit | Range | 2022年度 | 2023年度 | 2024年度 | 2025年度 | 2026年度 | ||
|---|---|---|---|---|---|---|---|---|
| Member of the Board | Male | people | Niterra Co., Ltd. | 7 | 7 | 7 | 7 | 8 |
| Female | people | 4 | 4 | 4 | 4 | 3 | ||
| Female ratio | % | 36 | 36 | 36 | 36 | 27 | ||
| Among us, outside directors (independent officers) | people | 7 | 7 | 7 | 7 | 7 | ||
| Ratio of outside directors* | % | 64 | 64 | 64 | 64 | 64 | ||
| Percentage of female and foreign national directors* | % | 45 | 45 | 36 | 36 | 27 | ||
| Average length of service* (as of the shareholders' meeting for the relevant year) | year | 5.4 | 5.5 | 4.8 | 5.2 | 4.8 | ||
| Among them, Audit and Supervisory Committee Members* | Male | people | 2 | 2 | 2 | 2 | 3 | |
| Female | people | 2 | 2 | 2 | 2 | 1 | ||
| Female ratio | % | 50 | 50 | 50 | 50 | 25 | ||
| Among us, outside directors (independent officers) | people | 3 | 3 | 3 | 3 | 3 | ||
| Board of Directors | Number of times held | times | 12 | 13 | 12 | 12 | ー | |
| Average attendance rate | % | 99 | 97 | 100 | 100 | ー | ||
*Our goal is to increase the ratio of outside directors to one-third or more and the ratio of female and foreign directors to 30% or more by fiscal year 2030.
*We transitioned to a company with an Audit and Supervisory Committee in fiscal year 2022.
Remuneration and Bonus Paid to Members of the Board in fiscal year 2025
| Total remuneration (million yen) |
Total remuneration by type (million yen) |
Number of recipients ((persons) |
|||
|---|---|---|---|---|---|
| Fixed Remuneration | Bonus | Performance-linked, stock-based remuneration | |||
| Members of the Board (excluding Audit and Supervisory Committee Members) |
490 | 258 | 164 | 67 | 8 |
| (Outside Directors) | 64 | 64 | - | - | 4 |
| Members of the Board, Audit and Supervisory Committee Members | 86 | 86 | - | - | 4 |
| (Outside Directors) | 46 | 46 | 3 | ||
*1: The following limits are set on the remuneration paid to Members of the Board (excluding Members of the Board who are Audit and Supervisory Committee Members) according to the resolution made at the 125th General Meeting of Shareholders held on June 25, 2025.
| Total compensation (excluding total bonuses) | Monthly | Up to 47 million yen (Of which, the monthly allowance for outside directors is up to 13 million yen.) |
|---|---|---|
| Total bonus amount | Annual | Up to 260 million yen |
Separately, by resolution of the 125th Ordinary General Meeting of Shareholders (held on June 25, 2025), we have established a performance-linked stock compensation system with a limit of 3.4 billion yen for five fiscal years from 2025 to 2039 for our directors (excluding directors who are audit committee members and outside directors) and executive officers (excluding employed executive officers).
*2: The following limits are set on remuneration paid to Members of the Board who are Audit and Supervisory Committee Members according to the resolution made at the 122th General Meeting of Shareholders held on June 24, 2022.
| Total compensation (excluding total bonuses) | Monthly | Within 10 million yen |
|---|---|---|
| Total bonus amount | Annual | Within 10 million yen |
*3: "Bonus" falls under "Performance-linked compensation, etc.," and "Performance-linked stock compensation" falls under both "Performance-linked compensation, etc." and "Non-monetary compensation, etc."
*4: The above includes the compensation for one outside director (excluding those who are audit and supervisory committee members) who retired at the conclusion of the 125th Ordinary General Meeting of Shareholders.
For details of the calculation method, please see the Annual Securities Report.
Annual Securities ReportCompliance
Whistleblowing
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Number of internal whistleblowing cases | cases | Niterra Co., Ltd. and Groups in Japan | 32 | 97 | 111 | 107 | 125 |
[Calculation Method] Number of consultations and reports received through the Corporate Ethics Helpline
Anti-corruption
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Violations of laws and regulations related to anti-corruption | cases | Niterra Group | 0 | 0 | 0 | 0 | 0 |
Political donation
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Political contributions | cases | Niterra Co., Ltd. | 0 | 0 | 0 | 0 | 0 |
| yen | 0 | 0 | 0 | 0 | 0 | ||
| Lobbyist | cases | 0 | 0 | 0 | 0 | 0 | |
| yen | 0 | 0 | 0 | 0 | 0 | ||
| Business associations | cases | 0 | 0 | 0 | 0 | 0 | |
| yen | 0 | 0 | 0 | 0 | 0 |
Appropriate Tax Payment
Tax revenue by country for fiscal year 2025
(Unit: billions of yen)
| Country of residence etc. | Income amount | Amount of net profit (loss) before tax | Tax amount payable | Amount of tax incurred | Number of employees (people) |
|---|---|---|---|---|---|
| Japan | 6,404 | 910 | 219 | 260 | 8,153 |
| US | 1,791 | 38 | 18 | 19 | 2,046 |
| Germany | 1,461 | 100 | 38 | 35 | 597 |
| China | 741 | 51 | 17 | 15 | 739 |
| Others | 2,806 | 290 | 66 | 91 | 4711 |
| Total | 13,203 | 1,389 | 358 | 420 | 16,246 |
*Revenue figures: Sales (including within the group), non-operating income (excluding dividend income within the group).
*Tax amount paid: The amount of corporate tax, etc., paid in the fiscal year ending March 2025.
*Tax amount incurred: The amount of corporate income tax, etc. recorded in the income statement for the fiscal year ending March 2025 (excluding adjustments to corporate income tax, etc. recorded under tax effect accounting).
*Number of employees: As of the end of March 2025
Research and Development
| Unit | Range | 2021年度 | 2022年度 | 2023年度 | 2024年度 | 2025年度 | |
|---|---|---|---|---|---|---|---|
| Research and development expenses | million yen | Niterra Group | 23,685 | 27,887 | 27,848 | 28,144 | 26,782 |
| Ratio of R&D expenses to sales | % | 4.82 | 4.96 | 4.53 | 4.31 | 3.66 |
[Calculation Method] Includes expenses related to improvements to existing products, applied research, etc., and development costs recorded as intangible assets.