Seiko PMC : Notice of the 56th 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: 4963 (Date sent) March 13, 2023 (Start date of providing materials in electronic format) March 7, 2023

To our shareholders:

Seido Kan

Representative Director, President and

CEO

SEIKO PMC CORPORATION

3-6, Nihonbashi Honcho 3-chome,

Chuo-ku, Tokyo

Notice of the 56th Annual General Meeting of Shareholders

You are cordially notified of the 56th Annual General Meeting of Shareholders of SEIKO PMC CORPORATION (the "Company"), which will be held as indicated below.

When convening this general meeting of shareholders, the Company takes measures for providing information that constitutes the content of reference documents for the general meeting of shareholders, etc. (matters for which measures for providing information in electronic format are to be taken) in electronic format, and posts this information on designated websites. Please access the one of the following websites using the internet addresses shown below to review the information.

Company Website:

https://www.seikopmc.co.jp/ir/shareholders/ (in Japanese only)

(Please access the above website and select "The 56th Annual General Meeting of Shareholders" from the menu.)

General Meeting of Shareholders Material Access Website:

https://d.sokai.jp/4963/teiji/ (in Japanese only)

Tokyo Stock Exchange (TSE) Website (Listed Company Search):

https://www2.jpx.co.jp/tseHpFront/JJK010010Action.do?Show=Show (in Japanese only)

(Please access the TSE website above, enter the issue name (company name) or securities code and click "Search," select "Basic Information" and then "Documents for Public Inspection/PR Information," and check the "Notice of General Meeting of Shareholders/Materials for General Meeting of Shareholders" under "Documents for Public Inspection.")

If you are unable to attend the meeting in person, you may exercise your voting rights via the internet or in writing (by mail). Please review the Reference Documents for the General Meeting of Shareholders and exercise your voting rights by 5:00 p.m. on Monday, March 27, 2023 (JST).

1

1. Date and Time: Tuesday, March 28, 2023 at 10:00 a.m. (Reception starts at 9:00 a.m.) (JST)

2. Venue:Grand Hall, 6th floor, Nomura Conference Plaza Nihonbashi, Nihonbashi Muromachi Nomura Building (YUITO), 4-3 Nihonbashi Muromachi 2-chome,Chuo-ku, Tokyo

3. Purpose of the Meeting Matters to be reported:

1. Business Report, Consolidated Financial Statements and Audit Reports of the Independent Auditor and the Board of Corporate Auditors for the Consolidated Financial Statements for the 56th Fiscal Year (from January 1, 2022 to December 31, 2022)
2. Non-consolidatedFinancial Statements for the 56th Fiscal Year (from January 1, 2022 to December 31, 2022)

Matters to be resolved:

Proposal No. 1 Election of Six Directors

Proposal No. 2 Election of Three Corporate Auditors

Proposal No. 3 Election of Two Alternate Corporate Auditors

Matters prescribed for convocation (information on the exercise of voting rights)

1. Please be advised that if you exercise your voting rights in writing (by mail) and do not indicate your approval or disapproval of the proposals on the voting form, the Company will treat it as an intention of your approval.
2. Please be advised that if you exercise your voting rights multiple times via the internet, the Company will only deem the substance of your final exercise to be valid.
3. Please be advised that if you redundantly exercise your voting rights both via the internet and in writing (by mail), the Company will only deem your exercise via the internet valid, regardless of the received date and time.
4. If you exercise your voting rights by proxy, one other shareholder of the Company with voting rights may attend the meeting as a proxy on your behalf. However, please note that you are required to submit a document certifying the authority of such proxy.

2

Reference Documents for General Meeting of Shareholders

Proposal No. 1 Election of Six Directors

The terms of office of all six Directors will expire at the conclusion of this meeting. Therefore, the Company proposes the election of six Directors.

The candidates for Director are as follows:

Candidate	Name	Career summary, position and responsibility in the Company	Number of the
Company's
No.	(Date of birth)	(Significant concurrent positions outside the Company)
shares owned
		Apr. 1983	Joined The Long-Term Credit Bank of Japan,
			Ltd.
		July 1991	Acting General Manager of London Branch
		Nov. 2005	Deputy Head of Financial Institution Business
			Division
		Jan. 2007	Executive Officer, State Street Trust and
			Banking Co., Ltd.
		June 2008	Director
		Oct. 2010	Joined the Company as General Manager of
			General Affairs and Personnel Department,
			Administration Division
		Apr. 2011	Head of General Affairs and Personnel
			Department, Administration Division
		Jan. 2012	Head of Business Development Department and
	Seido Kan		Head of Business Management Department,
		Corporate Planning Division
	(March 3, 1960)		20,700
	Mar. 2014	Director, Deputy Head of Corporate Planning
	Reelection		Division
		Jan. 2015	Director, Head of Corporate Planning Division
1		Jan. 2017	Director, Head of Overseas Business Division
		Jan. 2019	Director, Head of Corporate Planning Division
			and Head of Overseas Business Division
		Mar. 2019	Managing Director, Head of Corporate Planning
			Division and Head of Overseas Business
			Division
		Mar. 2022	Representative Director, President and CEO,
			Head of Overseas Business Division and
			Chairperson of Sustainability Committee (current
			position)
		[Significant concurrent positions outside the Company]
		Chairperson, Total Acrylic Polymer Industry Corporation
		Authorized Representative, SEIKO PMC VIETNAM CO., LTD.
	Reasons for nomination as a candidate

Mr. Kan previously worked in banking where he gained experience handling a wide range of financial services and postings overseas for many years. Since joining the Company, he has served as Head of General Affairs and Personnel Department, Director and Head of Corporate Planning Division, and Director and Head of Overseas Business Division. He has been nominated as a candidate to continue serving as Director given that he has varied expertise that will be indispensable in bringing about the Company's future business expansion, particularly in terms of arranging partnerships with companies in Japan and overseas, and carrying out M&As.

3

Candidate	Name	Career summary, position and responsibility in the Company	Number of the
Company's
No.	(Date of birth)	(Significant concurrent positions outside the Company)
shares owned
		Apr. 1985	Joined the Company
		Oct. 2008	Head of Sales Department, Paper Chemical Sales
			Division
		June 2010	Associate Director and Deputy Head of Paper
			Chemical Division
		June 2011	Director, Head of Paper Chemical Division
		June 2014	Director, Head of Paper Chemical Division and
	Mitsuhiro Murata		Deputy Head of Overseas Business Division
	(September 11, 1960)	Jan. 2015	Director, Head of Paper Chemical Business	38,700
	Reelection		Division and Deputy Head of Overseas Business
		Division
2		Jan. 2017	Director, Head of Paper Chemical Business
		Division
		Mar. 2019	Managing Director, Head of Paper Chemical
			Business Division
		Mar. 2022	Director, Managing Executive Officer, Head of
			Paper Chemical Business Division (current
			position)
	Reasons for nomination as a candidate
	Since joining the Company, Mr. Murata has engaged in duties on development and sales of paper chemicals, and
	subsequently held positions including Head of Hokkaido Branch, Head of Tohoku Branch, and Director and Head of
	Paper Chemical Business Division. He has been nominated as a candidate to continue serving as Director due to his
	leadership position in the Company's technical sales where he possesses extensive product knowledge and an
	expansive customer network.
		Apr. 1985	Joined Dainippon Ink & Chemicals, Inc.
			(currently DIC Corporation)
		Oct. 2007	Senior Manager of Coating Resins Sales Dept.
		Apr. 2010	Seconded to Siam Chemical Industry Co., Ltd.
		Oct. 2013	Senior Product Manager of General Polymer
			Product Div.
	Yuji Kikuchi	Jan. 2016	Vice President of Polymer Marketing Div.
	(July 24, 1961)	Jan. 2019	Vice President of Performance Material Products	-
			Div.
	Reelection
	Jan. 2021	Executive Officer, General Manager of
3			Performance Material Products Div. (current
		position)
		Mar. 2021	Director, the Company (current position)
		[Significant concurrent positions outside the Company]
		Executive Officer, General Manager of Performance Material
		Products Div., DIC Corporation
	Reasons for nomination as a candidate
	As Executive Officer of DIC Corporation, the parent company of the Company, Mr. Kikuchi serves as General
	Manager of Performance Material Products Div. (current position) overseeing the Company's business. He has been
	nominated as a candidate to continue serving as Director in order to help achieve operational synergies with the
	parent company, in addition to carrying out supervision with respect to the Company's management acting as a
	representative of the Company's shareholders.

4

Candidate	Name	Career summary, position and responsibility in the Company	Number of the
Company's
No.	(Date of birth)	(Significant concurrent positions outside the Company)
shares owned
		Apr. 1973	Joined The Fuji Bank, Ltd. (currently Mizuho
			Bank, Ltd.)
		Nov. 1986	Joined McKinsey & Company
		May 1989	Joined S.G.Warburg & Co., Ltd. (currently UBS
			Securities Japan Co., Ltd.)
	Hideji Harada	June 1990	Director of Corporate Finance Department (in
		charge of M&A)
	(August 29, 1950)			-
	Jan. 1992	Tokyo Branch Manager, INDOSUEZ
	Reelection		ADVISERS PACIFIC Pte, Ltd.
4		Sept. 1994	Joined KORN/FERRY INTERNATIONAL
	Nov. 1997	Partner
		Feb. 2012	Outside Director, KOJITUSANSO CO., Ltd.
		Mar. 2015	Director (Outside), the Company (current
			position)
	Reasons for nomination as a candidate and overview of expected roles
	Mr. Harada has been nominated as a candidate to continue serving as Independent Director (Outside) given that he
	has advised on management of the Company from a standpoint independent of management and properly supervised
	business execution, on the basis of his longstanding experience in the realms of consulting services and financial
	institutions.
		Apr. 1973	Joined Japan Development Bank (currently
			Development Bank of Japan Inc.)
		Oct. 1999	Head of Urban Development Department
		June 2002	General Manager of General Affairs Department
		June 2004	Associate Director
		Oct. 2008	Director and Managing Executive Officer
		June 2009	Representative Director and Vice President,
			Tokyo Ryutsu Center Inc.
	Keiji Taga	June 2009	Representative Director and President, TRC
		Service Co., Ltd.
	(July 25, 1950)			-
	June 2013	Representative Director and President, Tokyo
	Reelection		Ryutsu Center Inc.
	June 2013	Director, TRC Service Co., Ltd.
5
	Mar. 2016	Director (Outside), the Company (current
			position)
		June 2017	Director and Chairman, DBJ Asset Management
			Co., Ltd.
		Mar. 2019	Director (Outside), Nisshinbo Holdings Inc.
			(current position)
		[Significant concurrent positions outside the Company]
		Director (Outside), Nisshinbo Holdings Inc.
	Reasons for nomination as a candidate and overview of expected roles
	Mr. Taga has been nominated as a candidate to continue serving as Independent Director (Outside) given that he has
	advised on management of the Company from a standpoint independent of management and properly supervised
	business execution, drawing on his extensive expertise regarding Japanese industry and his considerable insight as a
	manager, formed on the basis of his experience serving in key positions in government-affiliated financial
	institutions.

5