Micware Co., Ltd. (MWC) investor Masahide Shigeno reports 9.1% ownership stake

Rhea-AI Filing Summary

Micware Co., Ltd. major shareholder Masahide Shigeno reported beneficial ownership of Micware American Depositary Shares. As of June 30, 2026, he beneficially owned 5,451,420 ordinary shares, representing 9.1% of the class. This includes 4,699,500 ordinary shares directly held and 751,920 ordinary shares issuable upon exercise of stock options.

Shigeno has sole voting and sole dispositive power over all 5,451,420 shares and no shared voting or dispositive power. The ownership percentage is based on 59,419,414 ordinary shares outstanding plus 751,920 shares issuable under his stock options.

Key Figures

Beneficial ownership: 5,451,420 shares Ownership percentage: 9.1% Directly held shares: 4,699,500 shares +4 more

7 metrics

Beneficial ownership 5,451,420 shares Ordinary shares beneficially owned by Masahide Shigeno as of June 30, 2026

Ownership percentage 9.1% Percent of Micware ordinary shares beneficially owned by Masahide Shigeno

Directly held shares 4,699,500 shares Ordinary shares directly held by Masahide Shigeno

Option shares 751,920 shares Ordinary shares issuable upon exercise of stock options held by Masahide Shigeno

Shares outstanding baseline 59,419,414 shares Ordinary shares outstanding used to calculate ownership percentage

Sole voting power 5,451,420 shares Shares over which Shigeno has sole power to vote or direct the vote

Sole dispositive power 5,451,420 shares Shares over which Shigeno has sole power to dispose or direct disposition

Key Terms

beneficially owned, sole voting power, sole dispositive power, American Depositary Shares, +1 more

5 terms

beneficially owned financial

"Amount beneficially owned: 5,451,420.00"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole voting power financial

"Sole Voting Power 5,451,420.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

sole dispositive power financial

"Sole Dispositive Power 5,451,420.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

American Depositary Shares financial

"Title of class of securities: American Depositary Shares, each representing one ordinary share"

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

Percent of class financial

"Percent of class: 9.1%"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 07/28/2026 - 07:57 PM Accepted by SEC EDGAR 07/28/2026 - 07:57 PM Learn about SEC filing dates

FAQ

How many Micware (MWC) shares does Masahide Shigeno beneficially own?

Masahide Shigeno beneficially owns 5,451,420 Micware ordinary shares. This consists of 4,699,500 shares directly held and 751,920 ordinary shares issuable upon exercise of his stock options as of June 30, 2026.

What percentage of Micware (MWC) does Masahide Shigeno own according to the Schedule 13G?

Masahide Shigeno owns 9.1% of Micware’s ordinary shares. This percentage is calculated using 59,419,414 shares outstanding plus 751,920 shares issuable upon exercise of his stock options as of June 30, 2026.

Does Masahide Shigeno have sole or shared voting power over Micware (MWC) shares?

Masahide Shigeno has sole voting power over all 5,451,420 Micware shares he beneficially owns. He reports 0 shares with shared voting power and also has sole dispositive power over the same number of shares.

How many Micware (MWC) shares underlie Masahide Shigeno’s stock options?

Masahide Shigeno holds stock options exercisable for 751,920 Micware ordinary shares. These option shares are included in his reported beneficial ownership and in the calculation of his 9.1% ownership stake as of June 30, 2026.

What share count was used to calculate Masahide Shigeno’s 9.1% stake in Micware (MWC)?

The 9.1% ownership is based on 59,419,414 Micware ordinary shares outstanding plus 751,920 ordinary shares issuable upon exercise of stock options held by Masahide Shigeno as of June 30, 2026.

What class of Micware (MWC) securities is reported in this beneficial ownership filing?

The filing covers American Depositary Shares of Micware, with each ADS representing one ordinary share. The reported beneficial ownership and percentages are based on the underlying ordinary shares represented by these ADS.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

Micware Co., Ltd.

(Name of Issuer)

American Depositary Shares, each representing one ordinary share

(Title of Class of Securities)

59490A100

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 59490A100

1

Names of Reporting Persons

Shigeno Masahide

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

JAPAN

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 5,451,420.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 5,451,420.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

5,451,420.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

9.1 %

12

Type of Reporting Person (See Instructions)

IN

Comment for Type of Reporting Person: Note to Rows 5 and 7: Represents (i) 4,699,500 ordinary shares directly held by Masahide Shigeno and (ii) an aggregate of 751,920 ordinary shares issuable upon exercise of stock options held by Masahide Shigeno as of June 30, 2026. Note to Row 11: Percentage of class is calculated based on (i) 59,419,414 ordinary shares outstanding and (ii) an aggregate of 751,920 ordinary shares issuable upon exercise of stock options held by Masahide Shigeno as of June 30, 2026.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Micware Co., Ltd.
(b)	Address of issuer's principal executive offices: Kobe Asahi Building 25th Floor 59 Naniwa-machi, Chuo-ku Kobe, Hyogo 650-0035
Item 2.
(a)	Name of person filing: Masahide Shigeno
(b)	Address or principal business office or, if none, residence: Kobe Asahi Building 25th Floor 59 Naniwa-machi, Chuo-ku Kobe, Hyogo 650-0035
(c)	Citizenship: Japan
(d)	Title of class of securities: American Depositary Shares, each representing one ordinary share
(e)	CUSIP Number(s): 59490A100
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 5,451,420.00
(b)	Percent of class: 9.1%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 5,451,420.00
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 5,451,420.00
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Shigeno Masahide

Signature:	/s/ Masahide Shigeno
Name/Title:	Masahide Shigeno
Date:	07/28/2026