Sigmakoki : Convocation Notice of the 48th Annual General Meeting of Shareholders

Note: This document has been translated from a part of 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.

Securities Code: 7713

August 8, 2023

To Shareholders

Yosuke Kondo, President & CEO

SIGMAKOKI CO., LTD.

17-2,Shimotakahagi-shinden,Hidaka-shi, Saitama

Convocation Notice of the 48th Annual General Meeting of Shareholders

We are pleased to announce the 48th Annual General Meeting of Shareholders of SIGMAKOKI CO., LTD. (the "Company"), which will be held as indicated below.

When convening this general meeting of shareholders, the Company takes measures for providing in electronic format the information that constitutes the content of reference documents for the shareholders meeting, etc. (matters for which measures for providing information in electronic format are to be taken). This information is posted on each of the following websites, so please access either of those websites to confirm the information.

[The Company's website] https://www.sigma-koki.com/meeting/48/ (in Japanese)

[Website for posted informational materials for the general meeting of shareholders] https://d.sokai.jp/7713/teiji/ (in Japanese)

[TSE website (Listed Company Search)] https://www2.jpx.co.jp/tseHpFront/JJK010010Action.do?Show=Show (in Japanese)

Access the TSE website by using the internet address shown above, enter "SIGMA KOKI CO., LTD." in "Issue name (company name)" or the Company's securities code "7713" in "Code," and click "Search." Then, click "Basic information" and select "Documents for public inspection/PR information." Under "Filed information available for public inspection," click "Click here for access" under "[Notice of General Shareholders Meeting /Informational Materials for a General Shareholders Meeting]."

If you are unable to attend the meeting in person, you may exercise your voting rights via the internet or in writing. Please review the Reference Documents for the General Meeting of Shareholders, and exercise your voting rights via either of the following methods.

Exercise of voting rights via the internet

Please access the dedicated website (in Japanese; https://www.web54.net) and indicate your approval or disapproval by 5:00 p.m., Monday, August 28, 2023 (JST).

Exercise of voting rights in writing (by postal mail)

Please indicate your approval or disapproval of the proposal on the voting form and send it by postal mail to arrive at the Company no later than 5:00 p.m., Monday, August 28, 2023 (JST).

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1 Date and time Tuesday, August 29, 2023 at 10:00 a.m. (registration begins at 9:00 a.m.) (JST)

2 Venue	3F, Multipurpose Hall, the Company's Head Office/Hidaka Plant
	17-2,Shimotakahagi-shinden,Hidaka-shi, Saitama

3 Agenda Reports

1. The Business Report, Consolidated Financial Statements, and the Reports of the Accounting Auditors and Audit & Supervisory Board on the Results of Audits of Consolidated Financial Statements for the 48th Fiscal Year (June 1, 2022 to May 31, 2023)
2. The Reports of Non-consolidated Financial Statements for the 48th Fiscal Year (June 1, 2022 to May 31, 2023)

Proposal
Proposal	Election of Six (6) Directors

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Reference Documents for the General Meeting of Shareholders

Proposal

Election of Six (6) Directors

The terms of office of all five (5) Directors will expire at the conclusion of this meeting.

In that regard, the Company proposes the election of six (6) Directors (including three (3) Outside Directors), increasing the number of Directors by one (1) to further enhance the management system.

The candidates for Director are as follows:

Candidate		Name	Current position and/or responsibility in the Company
No.
1		Yosuke Kondo	President & CEO			Reelection
			Director
2		Yoshinori Tabata	Division Manager of Production Division and Hidaka Plant			Reelection
			Manager
			Executive Officer
3		Yasuyuki Ishii	Division Manager of Administrative Division and General		New election
			Manager of Accounting Department
4		Tsutomu Ozawa	Outside Director			Reelection
		Outside
						Reelection
5		Makoto Nozaki	Outside Director				Outside
					Independent
						Reelection
6		Yumiko Matsuo	Outside Director				Outside
					Independent
Reelection:	Candidate for reelection as Director
New election: Candidate for new election as Director
Outside:	Candidate for Outside Director
Independent:	Candidate for Independent Officer

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Candidate	Name	Career summary, position and responsibility in the Company,	Number of the
Company's shares
No.	(Date of birth)	and significant concurrent positions outside the Company
owned
		Apr. 1991	Joined the Company
		Apr. 2000	Division Manager of Optical Element Division
		June 2002	Division Manager of Sales Division
	Yosuke Kondo	Aug. 2002	Director
	(April 2, 1963)	Sept. 2006	Managing Director	57,000 shares
		Aug. 2011	Senior Managing Director
	Reelection	Apr. 2013	Chairman of OptoSigma Corporation
1		Aug. 2013	Representative Director and Senior Managing
		Director of the Company
		Aug. 2014	President & CEO (current position)
	Reasons for nomination as candidate for Director
	Yosuke Kondo has experience as Director of the Company and of a Group company and he has been involved in the
	Group's management for many years. Currently, he is contributing to the enhancement of the corporate value of the
	Company and the Group as President & CEO of the Company. The Company has appointed him again as candidate for
	Director because of his deep specialist knowledge and wealth of experience in the optics industry along with his strong
	results, skills and insight as a corporate manager.
		Apr. 1990	Joined the Company
		June 2003	Deputy Division Manager of Development
			Division
		June 2006	Executive Officer
		Dec. 2008	Deputy Division Manager of Optical System
			Equipment Division
		Apr. 2010	Deputy Division Manager of System Products
			Division
		June 2011	General Manager of Optical System
			Department
	Yoshinori Tabata	Dec. 2013	Deputy Division Manager of Sales Division
	June 2015	Deputy Division Manager of Sales Division and
	(April 16, 1969)
		in charge of Development Department	11,700 shares
	Reelection	June 2017	Division Manager of Engineering Division
	Aug. 2017	Director (current position)
		Apr. 2018	Director of OptoSigma Corporation
2		June 2019	Division Manager of Engineering Division and
			General Manager of Development Department
			of the Company
		Jan. 2023	Division Manager of Production Division and
			Hidaka Plant Manager (current position)
		July 2023	President & CEO of LMS Co., Ltd. (current
			position)
		Significant concurrent positions outside the Company
		President & CEO of LMS Co., Ltd.
	Reasons for nomination as candidate for Director
	Yoshinori Tabata has led the Company's engineering and development departments for many years as Director. He is
	currently leveraging his extensive knowledge to lead the production division, and is contributing to the improvement of
	our position as a manufacturer of optical products by establishing production technologies for manufacturing our high-
	quality, high-precision products. He is also expected to acquire a high level of insight into corporate management, such
	as serving as the Representative Director of an affiliated company accounted for by the equity-method from this year.
	The Company has appointed him again as candidate for Director because of his deep specialist knowledge and wealth
	of experience in the optics industry along with his strong results, skills and insight as a corporate manager.

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Candidate	Name	Career summary, position and responsibility in the Company,	Number of the
Company's shares
No.	(Date of birth)	and significant concurrent positions outside the Company
owned
		Apr. 1988	Joined the Company
		May 2008	Audit & Supervisory Board Member of Tac
			Coat Co., Ltd. (current position)
		Sept. 2009	Deputy Manager of Accounting Department of
			the Company
	Yasuyuki Ishii	Dec. 2013	General Manager of Accounting Department
	(September 5, 1967)		(current position)	7,000 shares
		Dec. 2013	Director of OptoSigma Europe S.A.S. (current
	New election		position)
		June 2019	Deputy Division Manager of Administrative
3			Division of the Company
		Dec. 2020	Division Manager of Administrative Division
			(current position)
		Dec. 2020	Executive Officer (current position)
	Reasons for nomination as candidate for Director
	Yasuyuki Ishii has deep specialized knowledge and high insight gained through many years of experience in the
	Company's accounting and treasury departments, and also performs supervision and auditing work as an Audit &
	Supervisory Board Member of an affiliated company accounted for by the equity-method and Director of overseas
	subsidiaries. The Company has appointed him as a candidate for Director because he has served as supervisor of the
	administrative division from December 2020 and possesses strong results, skills and insight in business management
	operations.
		Apr. 1984	Joined HAMAMATSU PHOTONICS K.K.
		June 2015	19th Department Manager, First Manufacturing
			Department, Electron Tube Division
		Oct. 2018	General Manager of First Manufacturing
			Department, Electron Tube Division
	Tsutomu Ozawa	Aug. 2020	Outside Director of the Company (current
	(October 8, 1961)		position)
		Oct. 2020	General Manager of Electron Tube Business	- shares
	Reelection		Planning Department, Electron Tube Division,
	Outside		HAMAMATSU PHOTONICS K.K. (current
			position)
		Significant concurrent positions outside the Company
4		General Manager of Electron Tube Business Planning
		Department, Electron Tube Division, HAMAMATSU
		PHOTONICS K.K.
	Reasons for nomination as candidate for Outside Director and overview of expected roles
	Although Tsutomu Ozawa has no experience of being directly involved in corporate management, he serves as the
	General Manager of Electron Tube Business Planning Department, Electron Tube Division, HAMAMATSU
	PHOTONICS K.K., a business partner of the Company. The Company has appointed him again as a candidate for
	Outside Director because he has deep specialized knowledge, a wealth of experience, and high insight in optics, which
	he is expected to reflect in the Company's management as well as provide supervision and advice on the Company's
	management execution. If appointed, he will be involved as a member of the voluntary Compensation Committee using
	his objective and neutral standpoint in determining the remuneration, etc. of the Company's officers. In addition, as a
	member of the voluntary Nominating Committee, he will be similarly involved in the election and dismissal of the
	Company's officers.

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