Supplementary Materials for theSummary of Financial Reports
2Q, FYE June 30, 2023
February 13, 2023
Nippon Koei Co., Ltd.

IR Inquiries: Corporate Communication Office c-com@n-koei.co.jp
This presentation is provided for informational purposes only and is not intended to solicit any action. Presentation in the materials(including forecasts of financial results) is based on credible information available at the time of publication and certain assumptions
Nippon Koei believes to be reasonable. Various factors may cause actual results to differ from the projected numbers or otherexpectations implied or expressed in this presentation.

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2Q Results for FYE June 30, 2023
Orders and revenue increased year-on-year, while operating profit declined due to anincrease in general administrative expenses and other project costs.
Consolidated results•

Orders increased year-on-year due to steady progress in the Urban & Spatial Development
Business and Energy Business.

•Operating profit decreased mainly due to an increase in general administrative expenses in theConsulting and Urban & Spatial Development Businesses.

•Quarterly profit decreased due to a decrease in operating profit and foreign exchange losses.
FYF22/62Q
Results
50,278FYE23/62Q
Results
59,016

Revenue

52,981Gross profit(Million yen)

YoY ChangeAmount%

8,738

117.4%

58,4515,470

110.3%

14,915

15,913998

106.7%

Operating profit

1,268

1,235

-32

97.4%

Profit before tax

1,517

269-1,248

17.7%

615

-1,054-1,670-OrdersProfit attributable to owners of parent2

Results by Business Segment(Million yen)OrdersFYE June
2022 2Q
Results

50,278FYE June
2023 2Q
Results

59,016■FYE June 2022,2Q■FYE June 2023,2Q(Millions yen)OrdersYoY Change
Amount29,285 29,708%

8,738

Consulting

29,28529,708423

101.4%

Urban & Spatial Development

14,687

19,7705,083

134.6%

Energy

6,247

9,418

3,170

150.7%

Other

57119

61

207.3%

Revenue

52,98158,4515,470

110.3%

Consulting

28,48733,042

4,555

116.0%

Urban & Spatial Development

15,53816,399861

105.5%

Energy

8,565

8,577

12100.1%

Other

390

432

41

110.6%

1,268

1,235

▲32

97.4%

Consulting

647▲219▲867-

Urban & Spatial Development555198

▲356

35.8%

Energy9362,047

1,111218.7%

Other▲871▲79080-Operating profit

14,687117.4%

19,7706,247

コンサルティング

都市空間

9,418

エネルギー

Revenue
28,48733,042
15,538 16,399
8,565 8,577

コンサルティング

都市空間

エネルギー

Operating profit
647

2,047555936198▲ 219
コンサルティング

都市空間

エネルギー

* Nippon Koei Urban Space Co., Ltd. (established by consolidating former Tamano Consultants Co., Ltd. and the Urban & Spatial Development Business of Nippon Koei), its
subsidiary Tamano Ecost Co., Ltd. and our consolidated subsidiary Nakaze Kamp Co., Ltd. changed their segment classification from the “Consulting Business” to the “Urban &Spatial Development Business” from the fiscal year ending June 2023. Therefore, the segment information for the fiscal year ending June 2022 is provided based on the newreportable segment classification.

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Overview by segment
Consulting Business◼ Orders: Although they were sluggish in Japan due to the front loading of orders in the first half as a result of early execution of the budget,they increased year-on-year due to overseas orders for the Indian bullet train, etc.
◼ Revenue: Revenue increased due to steady progress in domestic transportation and environmental sectors, and projects in thetransportation sector in South and Southeast Asia.
◼ Operating profit: Overseas, profit decreased due to higher costs such as travel expenses, and losses from the return of VAT (Value AddedTax) from a small hydropower project in Indonesia.
Urban & Spatial Development Business◼ Orders: Large-scale orders for BDP in the UK and large-scale housing orders for Quadrangle in Canada contributed to a year-on-yearincrease.
◼ Revenue: Sales increased due to strong progress of on-hand orders with BDP and depreciation of the yen.
◼ Operating profit: Decreased due to increased labor costs and general administrative expenses in BDP’s business activities, the impact ofinflation, and an increase related to the construction of infrastructure for expanding business for both BDP and NKUrban.
*The actual exchange rate in 2Q of FYE June 30, 2023: ￡1=163.91 yen (the assumed exchange rate for FYE June 30, 2023: ￡1= 154.00 yen)

Energy Business◼ Orders: Increase year-on-year due to strong orders in the Power Construction Division and large private-sector orders in the Plant Division,
which remained at a higher level than usual.
◼ Revenue: Remained at the same level compared to the same period for the previous year due to a decrease in the number of orders fordam monitoring and control system projects in the Manufacturing Division and longer delivery times for parts, despite on-hand projects suchas large-scale renovation of power plants, which were ordered by government agencies, progressing as planned.
◼ Operating profit: While profits were sluggish due to decreased sales in the Manufacturing Division, operating profit increased due to therecording of the gain on the sale of shares of PT.ARKORA HYDRO, which was an affiliated company of the Company, and the gain on
investment into securities (+2 billion yen).
4FYE June 2023 Forecast
Orders, revenue and profits increased from the previous fiscal year, and there are no changes to the revenue
or profit growth plans for any segment.
(Million yen)OrdersConsulting Business
Urban & Spatial Development Business
Energy Business

Revenue
Consulting Business
Urban & Spatial Development Business
Energy Business
Other

Operating profit
Consulting Business
Urban & Spatial Development Business
Energy Business
OtherProfit attributable to owners of parentROE

FYE 2022/6
Results
131,166
84,55132,14714,343
130,674
75,00036,091
18,799
783
9,065
7,971
2,599
1,290
-2,7966,579
8.8%

FYE 2023/6
Plan
140,000
85,00040,00016,000145,000
81,50040,00022,5001,000
11,300
9,200
2,800
2,400
-3,1006,700
8.5%

YoY Change
Amount%

8,833
448
7,852
1,656
14,325
6,499
3,908
3,700
216
2,234
1,228
200
1,109
-303
120-0.3%

106.7%
100.5%
124.4%
111.6%
111.0%
108.7%
110.8%
119.7%
127.7%
124.6%
115.4%
107.7%
186.0%
101.8%* Nippon Koei Urban Space Co., Ltd. (established by consolidating former Tamano Consultants Co., Ltd. and the Urban & Spatial Development Business of Nippon Koei), its subsidiary Tamano Ecost Co., Ltd. and ourconsolidated subsidiary Nakaze Kamp Co., Ltd. changed their segment classification from the “Consulting Business” to the “Urban & Spatial Development Business” from the fiscal year ending June 2023. Therefore,
the segment information for the fiscal year ending June 2022 is provided based on the new reportable segment classification.

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