Note: This document has been translated from the Japanese original for reference purposes only. In the event of any discrepancy
between this translated document and the Japanese original, the original shall prevail.

October 30, 2023
Company name:
RIKEN TECHNOS CORPORATIONName of representative: Kazuaki Tokiwa, Representative Director,President & CEO(Securities code: 4220; Tokyo Prime Market)
Inquiries:
Ryoichi Takami, Accounting General Manager(Telephone: +81-3-5297-1650)

Notice Concerning the Difference between Consolidated Financial Forecasts (and NonConsolidated Financial Forecasts) and Actual Results for the Six Months Ended September 30,
2023 and the Revision of Consolidated Financial Forecasts (and Non-Consolidated FinancialForecasts) for the Fiscal Year Ending March 31, 2024
RIKEN TECHNOS CORPORATION (the “Company”) hereby announces the difference between its consolidated
financial forecasts (and non-consolidated financial forecasts) for the six months ended September 30, 2023
announced on May 1, 2023 and actual results announced today. The Company also announces the revision of its
consolidated financial forecasts (and non-consolidated financial forecasts) for the fiscal year ending March 31,2024 (from April 1, 2023 to March 31, 2024) based on the actual results of the first half and the most recent
operating trends, as described below.
1. Difference between its consolidated financial forecasts (and non-consolidated financial forecasts) for the six
months ended September 30, 2023 and actual results (from April 1, 2023 to September 30, 2023)(1) Consolidated financial results for the six months ended September 30, 2023
(Millions of Yen, except Consolidated earnings per share)
ProfitBasic
attributable toearnings
Operating profit
Ordinary profit
ownersper shareof parent(Yen)Net sales

Previously announced forecasts (A)61,000

2,900

3,000

1,700

26.87

Actual results (B)61,397

3,621

4,202

2,507

39.62

Difference (B-A)

397

721

1,202

807

24.9

40.1

47.5

3,498

4,040

2,377

Difference (%)(Reference) Actual consolidated
financial results for the six months
ended September 30, 2022

0.7
59,527(2) Non-Consolidated financial results for the six months ended September 30, 2023
(Millions of Yen, except Earnings per share)
Basicearnings
Ordinary profit
Profitper share(Yen)Net sales

Previously announced forecasts (A)30,000

1,500

1,200

18.97

Actual results (B)30,005

2,731

2,176

34.40

Difference (B-A)

5

1,231

976

Difference (%)

0.0

82.1

81.4

- 1 -

37.64

2. Revision of its consolidated financial forecasts (and non-consolidated financial forecasts) for the fiscal year
ending March 31, 2024 (from April 1, 2023 to March 31, 2024)(1) Consolidated financial forecasts for the fiscal year ending March 31, 2024
(Millions of Yen, except Consolidated earnings per share)
BasicProfit attributableearnings
Operating profit
Ordinary profit
to owners
per shareof parent(Yen)Net sales

Previously announced forecasts (A)128,000

7,600

7,800

4,500

71.14

Revised forecasts (B)128,000

8,400

9,000

5,200

82.14

Change (B-A)

0800

1,200700

Change (%)

010.5

15.4

15.6

123,497

7,506

7,964

4,557

(Reference) Actual consolidated
financial results for the previous
fiscal year
(Fiscal year ended March 31, 2023)

72.11(2) Non-Consolidated financial forecasts for the fiscal year ending March 31, 2024
(Millions of Yen, except Earnings per share)
Basicearnings
Ordinary profit
Profitper share(Yen)Net sales

Previously announced forecasts (A)62,000

5,000

4,100

64.81

Revised forecasts (B)62,000

6,200

4,900

77.40

Change (B-A)

01,200800

Change (%)

024.0

19.5

57,0805,332

4,232(Reference) Actual non-consolidated
financial results for the previous
fiscal year
(Fiscal year ended March 31, 2023)
Note:

66.96

“Basic earnings per share”in (1) and (2) does not take into account the impact of share repurchases
based on the“Notice Concerning Determination of Matters Related to Acquisition of Own Shares”
announced separately today.

3. Reason for difference and revision
The consolidated financial forecasts for the fiscal year ending March 31,2024 announced on May 1, 2023, theassumed situation is as follows. The Japanese economy is heading towards a gradual recovery due to some
economic boosting effects in the process of transitioning to the post COVID-19. The future of the world isuncertain, including monetary tightening in Europe and the U.S. in response to global inflation, the prolonged
situation in Ukraine, weakening exports due to a slowdown in overseas economies, and a growing sense ofstagnation due to the impact of rising commodity prices due to soaring resource prices. In our group's businessactivities, the assumption that various costs will rise due to the rise in utility costs, including electricity
charges, and increases in logistics costs, which will have an impact on business performance.
With regard to the consolidated financial results for the six months ended September 30, 2023, profit at eachstage exceeded initial forecasts due to hold down increases in utility costs such as electricity charges morethan expected, and depreciation of the yen and other factors.
With regard to the consolidated financial forecasts for the fiscal year ending March 31,2024, although thefuture remains uncertain, profit at each stage is expected to exceed the initial forecast, reflecting the actual
results of the first half.

- 2 -The year-end dividend forecast for the fiscal year ending March 31, 2024, has remained unchanged due to theneed to consider the impact of share buybacks based on the“Notice Concerning Determination of Matters
Related to Acquisition of Own Shares”* Statements related to business forecasts contained in this document are based on information currently available
and certain assumptions considered to be reasonable. Actual results may differ significantly due to various factor.

- 3 -