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

Securities Code: 7412
Date of sending by postal mail: June 5, 2024
Start date of measures for electronic provision: May 31, 2024
To our shareholders:
Yasuyuki Kojima
President and Representative Director

ATOM CORPORATION
2-2-1 Minatomirai, Nishi-ku, Yokohama-shi,
Kanagawa

Notice of the 53rd Annual General Meeting of Shareholders
First, we would like to offer our deepest sympathies to all those affected by the 2024 Noto Peninsula
earthquake and express our hope for a speedy recovery.
We hereby announce the 53rd Annual General Meeting of Shareholders of ATOM CORPORATION (the“Company”), which will be held as indicated below.
In convening this General Meeting of Shareholders, the Company has taken 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 has posted the information on each of the following websites. Please access either of thosewebsites to view the information.
If you are unable to attend the meeting in person, you may exercise your voting rights via the internet or inwriting. Please review the Reference Documents for the General Meeting of Shareholders, and exercise yourvoting rights by 6:00 p.m. on Monday, June 24, 2024 (JST).
The Company’s website:
https://www.atom-corp.co.jp/ir/meeting.html (in Japanese)(Confirm by accessing the above website, selecting Notice of the 53rd Annual General Meeting ofShareholders.)
Tokyo Stock Exchange (TSE) website:
https://www2.jpx.co.jp/tseHpFront/JJK010010Action.do?Show=Show (in Japanese)(Access the TSE website by using the internet address shown above, enter “ATOM” in “Issue name (companyname)” or the Company’s securities code “7412” in “Code,” and click “Search.” Then, click “Basicinformation” 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].”)Website for posted informational materials for the general meeting of shareholders:
https://d.sokai.jp/7412/teiji/ (in Japanese)-1-1. Date and time:

Tuesday, June 25, 2024 at 2:00 p.m. (JST)

2. Venue:

Yokohama-shi Community Center Kannai Hall
4-42-1, Sumiyoshi-cho, Naka-ku, Yokohama-shi, Kanagawa

3. Purposes:
Items to be reported:
The Business Report and the Non-consolidated Financial Statements for the 53rd fiscal year
(from April 1, 2023 to March 31, 2024)
Items to be resolved:
Proposal No. 1 Election of Four Directors (Excluding Directors Who Are Audit and Supervisory
Committee Members)
Proposal No. 2 Election of Three Directors Who Are Audit and Supervisory CommitteeMembers
 If you attend the meeting in person, please submit the voting form sent out with this notice at the reception desk.
 If revisions to the matters subject to measures for electronic provision arise, a notice of the revisions and the details of
the matters before and after the revisions will be posted on the Company’s website, the TSE website and website forposted informational materials for the general meeting of shareholders.
 Paper-based documents stating Electronic Provision Measures Matters are sent to shareholders who have requested thedelivery of paper-based documents, however those documents do not include the following matters in accordance withthe provisions of laws and regulations and Article 17 of the Company’s Articles of Incorporation.
i.

Business Report
Part of “Matters Concerning the Current Status of the Company” (status of the Company’s assets and profit andloss for the past three fiscal years, issues to be addressed, principal businesses, principal offices, status ofemployees, status of principal lenders, and other significant matters relating to the current state of the Company),“Status of Shares,” “Status of Share Acquisition Rights,” “Status of Outside Officers,” “Status of FinancialAuditor,” “Overview of System for Ensuring Properness of Operations and Outline of its Operating Status,” “BasicPolicy Regarding Control of the Company,” and “Policy Regarding Determination of Dividends of Surplus.”ii. Non-consolidated Financial Statements“Non-consolidated Balance Sheet,” “Non-consolidated Statement of Income,” “Non-consolidated Statements ofChanges in Equity,” “Notes to Non-consolidated Financial Statements” “Audit Report on the Non-consolidated
Financial Statements,” and “Audit Report of the Audit and Supervisory Committee.”
Accordingly, the Business Report attached to such documents is part of the documents audited by the Audit andSupervisory Committee when preparing its audit report.
 The Company will not send out the Notice of the Resolutions of this general meeting of shareholders. After theconclusion of this meeting, the results will be posted on the Company’s website on the internet (https://www.atomcorp.co.jp/) (Japanese only).

<Request to Shareholders Attending the Meeting in Person>
Our staff will be at the venue after confirming their physical condition, which includes taking their temperature.
We ask that shareholders who will attend the General Meeting of Shareholders attend after confirming your physical conditionon the day of the meeting. If you feel uncomfortable or unwell during the meeting, or if you any other issue of concern occurs,
please let a nearby attendant know.

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