Financial and Non-Financial Highlight

Personnel data

IIJ (non-consolidated basis) Number of employees (By gender)

	FY2021	FY2022	FY2023	FY2024	FY2025
Male	1,898	1,984	2,139	2,344	2,483
Female	446	491	541	627	691
Female ratio (%)	19.0	19.8	20.2	21.1	21.8

IIJ (non-consolidated basis) Number of hired employees (By gender)

	FY2021	FY2022	FY2023	FY2024	FY2025
Male	155	179	269	299	271
Female	55	66	70	108	96
Female ratio (%)	26.2	26.9	20.6	26.5	26.2

IIJ (non-consolidated basis) Number of managerial positions and ratio of females in managerial positions

	FY2022	FY2023	FY2024	FY2025	FY2026
Number of managerial positions	722	783	851	888	992
Male	681	734	787	813	905
Female	41	49	64	75	87
Female ratio (%)	5.7	6.3	7.5	8.4	8.8

• (*)The ratios of females in managerial positions of IIJ are as of April 1 of each fiscal year

IIJ (non-consolidated basis) Average Age and Years of Service

	FY2021	FY2022	FY2023	FY2024	FY2025
Average Age	37.7	37.9	37.6	37.4	37.5
Average Years of Service (%)	9.1	9.3	9.2	9.0	9.3

IIJ (non-consolidated basis) Number and employment rate of employees with disabilities

	FY2021	FY2022	FY2023	FY2024	FY2025
Number of employees with disabilities	56	64	64	78	85
Employment rate of employees with disabilities (%)	2.4	2.4	2.4	2.6	2.7

• (*)Based on the employment status report of persons with disabilities
• (*)On June 1st of each business year

IIJ（non-consolidated basis） Ratio of employees using the childcare leave system and ratio of employees returning to work after childcare leave system (Male / Female)

		FY2021	FY2022	FY2023	FY2024	FY2025
Ratio of employees using the childcare leave system (%)	Male	24.6	33.3	53.5	61.9	61.8
	Female	100.0	100.0	100.0	100.0	100.0
Ratio of employees returning to work after childcare leave system (%)	Male	92.9	100.0	100.0	97.4	100.0
	Female	100.0	100.0	93.3	100.0	93.3

Average overtime per month

	FY2021	FY2022	FY2023	FY2024	FY2025
Average overtime per month	28.1	27.7	26.2	24.8	24.9

Number of days and percentage of paid leaves taken

	FY2021	FY2022	FY2023	FY2024	FY2025
Average number of paid leaves taken per year (days)	11.3	12.6	13.1	12.6	12.6
Annual average acquisition rate (%)	64.4	71.0	75.0	73.2	73.5

• (*)The number of days and rate of taken paid leaves above do not include special ones.

IIJ (non-consolidated basis) turnover rate

	FY2021	FY2022	FY2023	FY2024	FY2025
Turnover rate (%)	4.2	3.8	4.6	3.9	4.5

Environmental data

Greenhouse Gas Emissions

FY2025 Results (Unit: t-CO2)(*1,2)
Scope of data collection: IIJ and all consolidated subsidiaries

Breakdown of Greenhouse Gas Emissions for FY2025

	IIJ	IIJGS／EG／PTC	Others	Total
Scope1	255	8	52	315
Scope2	12,567	968	606	14,141
Scope3	335,988	111,911	88,851	536,750

IIJ (Non-consolidated basis) historical results (Unit: t-CO2)

	FY2023	FY2024	FY2025
Scope1	340	252	255
Scope2	9,759	12,535	12,567
Scope3	323,724	374,823	371,682 (*3)

• (*1)Calculation is based on the Basic Guidelines on Accounting for Greenhouse Gas Emissions Throughout the Supply Chain (The Ministry of the Environment and Ministry of the Economy, Trade and Industry）
• (*2)GHG emissions are reported based on market-based figures.
• (*3) Category 1 (Purchased goods and services), which is a major component of Scope 3 emissions, saw an increase in activity levels year on year; however, emissions decreased due to a reduction in emission factors following the update of the 3EID (Embodied Energy and Emission Intensity Data for Japan Using Input‑Output Tables), thereby contributing to the overall decrease in Scope 3 emissions.

Percentage of renewable energy used in own data centers

	FY2022	FY2023	FY2024	FY2025
Percentage of renewable energy	46% (As of March 2023)	50% (As of March 2024)	55% (As of April 2025)	65% (As of April 2026)

PUE of own data centers(*4)(*5)

	FY2022	FY2023	FY2024	FY2025
Matsue Data Center Park	1.3	1.3	1.3	1.4
Shiroi Data Center Campus	1.3	1.4	1.3	1.3

1. (*4)PUE（Power Usage Effectiveness) : Total data center facility energy usage divided by IT equipment energy usage
2. (*5)Industry's Highest Level PUE : PUE 1.4 or lower (As of April 2026, the Agency for Natural Resources and Energy has set a benchmark index and target level of PUE as 1.4 or lower in the data center sector, and operators that achieve this are considered excellent energy conservation operators.)