Mammy Mart Holdings Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of 9823?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	1,900,000	3.8%
Institutions	3,079,704	6.16%
Employee Share Scheme	5,085,000	10.2%
General Public	9,869,151	19.7%
Public Companies	10,820,000	21.6%
Individual Insiders	19,259,965	38.5%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 20 shareholders own 80.27% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
36.8%	Hirofumi Iwasaki	18,384,965	JP¥26.7b	0%	no data
21.6%	Sumitomo Corporation	10,820,000	JP¥15.7b	0%	no data
8.35%	Mammy Mart Corporation Mutual Prosperity Association	4,175,000	JP¥6.1b	0%	no data
3.03%	The Musashino Bank, Ltd.	1,515,000	JP¥2.2b	0%	9.92%
2.38%	KOKUBU GROUP CORP.	1,190,000	JP¥1.7b	0%	no data
1.82%	Mammy Mart Corporation, ESOP	910,000	JP¥1.3b	0%	no data
1.77%	Nissay Asset Management Corporation	885,000	JP¥1.3b	0%	0.01%
1.47%	Yoshihisa Iwasaki	735,000	JP¥1.1b	0%	no data
1.42%	Iwasaki Management Research Institute Ltd.	710,000	JP¥1.0b	0%	no data
1.21%	The Towa Bank, Ltd.	605,000	JP¥877.3m	0%	16.67%
0.14%	Dimensional Fund Advisors LP	71,704	JP¥104.0m	2.14%	no data
0.06%	Kazuhiro Ishiguro	30,000	JP¥43.5m	0%	no data
0.05%	Norio Shiba	25,000	JP¥36.3m	0%	no data
0.05%	Atsuhiro Iwasaki	25,000	JP¥36.3m	0%	no data
0.04%	Shigeru Aoki	20,000	JP¥29.0m	0%	no data
0.03%	Daisuke Shimizu	15,000	JP¥21.7m	0%	no data
0.03%	Osamu Hara	15,000	JP¥21.7m	0%	no data
0.02%	Hiroki Kibata	10,000	JP¥14.5m	0%	no data
0.005%	FMR LLC	2,500	JP¥3.6m	0%	no data
0.001%	American Century Investment Management Inc	500	JP¥725.2k	0%	no data

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/10/18 22:51
End of Day Share Price	2025/10/17 00:00
Earnings	2025/06/30
Annual Earnings	2024/09/30

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Mammy Mart Holdings Corporation is covered by 0 analysts. 0 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.