Who has been buying K Pharma,Inc. stock?

9 distinct investors have filed 11 disclosed large-shareholding filings in K Pharma,Inc. (4896), most recently on 2026-04-13. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.

How many insider filings does K Pharma,Inc. have?

K Pharma,Inc. has 11 buy-side and 9 sell-side disclosures on record, covering ¥9.2B ($59.3M) in total reported value, spanning 2023-10-20 to 2026-04-13.

Where does StockDrifts get K Pharma,Inc. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

K Pharma,Inc. 4896

Company

株式会社ケイファーマK Pharma,Inc.

Investors

Buys

Total Value

¥9.2B ($59.3M)

Avg Return

+2.01%

Last Filing

2026-04-13

K Pharma,Inc. (4896) has 11 disclosed large-shareholding filings and 9 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥9.2B ($59.3M) in reported transaction value. The earliest filing StockDrifts holds for K Pharma,Inc. is dated 2023-10-20; the most recent is 2026-04-13. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is +2.01%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-04-13	SELL	unknown	岡野栄之 Hideyuki Okano	strategic	1.2M	¥740	-0.3%	¥88M ($566K)
2025-05-02	SELL	unknown	岡野栄之 Hideyuki Okano	strategic	1.3M	¥756	-5.8%	¥4M ($23K)
2025-04-04	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	25.3K	¥637	+25.6%	¥16M ($104K)
2025-04-04	BUY	unknown	SBI Ventures Two株式会社 SBI Ventures Two Co., Ltd.	passive	1.7M	¥637	+25.6%	¥1.1B ($7.1M)
2025-04-04	SELL	unknown	SBIインベストメント株式会社 SBI Investment Co., Ltd.	other	0	¥637	-25.6%	¥146M ($944K)
2025-04-03	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	25.7K	¥711	+12.5%	¥18M ($118K)
2025-04-03	BUY	Market Buy	SBI Ventures Two株式会社 SBI Ventures Two Co., Ltd.	passive	1.7M	¥711	+12.5%	¥1.2B ($7.9M)
2025-04-03	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	230.0K	¥711	-12.5%	¥171M ($1.1M)
2025-04-02	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	25.2K	¥760	+5.3%	¥2M ($11K)
2025-04-02	BUY	Market Buy	SBI Ventures Two株式会社 SBI Ventures Two Co., Ltd.	passive	1.7M	¥760	+5.3%	¥1.3B ($8.5M)
2025-04-02	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	470.0K	¥760	-5.3%	¥137M ($882K)
2025-03-31	SELL	Market Buy	伊藤忠テクノロジーベンチャーズ株式会社 ITOCHU Technology Ventures, Inc.	passive	234.8K	¥815	+1.8%	¥294M ($1.9M)
2024-06-19	BUY	Market Buy	伊藤忠テクノロジーベンチャーズ株式会社 ITOCHU Technology Ventures, Inc.	passive	594.9K	¥670	+19.4%	¥82M ($532K)
2024-06-19	SELL	Market Buy	伊藤忠テクノロジーベンチャーズ株式会社 ITOCHU Technology Ventures, Inc.	passive	594.9K	¥670	-19.4%	¥82M ($532K)
2023-11-28	BUY	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	650.0K	¥678	+18.0%	¥441M ($2.8M)
2023-11-28	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	23.1K	¥678	+18.0%	¥1.4B ($9.0M)
2023-11-28	BUY	Market Buy	SBI Ventures Two株式会社 SBI Ventures Two Co., Ltd.	passive	1.7M	¥678	+18.0%	¥1.2B ($7.6M)
2023-11-22	SELL	Market Buy	SBI Ventures Two株式会社 SBI Ventures Two Co., Ltd.	passive	1.7M	¥685	-16.8%	¥5M ($31K)
2023-11-22	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	274.1K	¥685	+16.8%	¥99M ($636K)
2023-11-22	SELL	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	650.0K	¥685	-16.8%	¥2M ($10K)
2023-11-01	BUY	Market Buy	鹿児島ディベロップメント株式会社 Kagoshima Development Co.,Ltd.	passive	641.0K	¥708	+13.0%	¥454M ($2.9M)
2023-11-01	BUY	Market Buy	鹿児島ディベロップメント株式会社 Kagoshima Development Co.,Ltd.	passive	641.0K	¥708	+13.0%	¥454M ($2.9M)
2023-10-30	BUY	Market Buy	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	129.2K	¥700	+14.3%	¥90M ($583K)
2023-10-30	BUY	Market Buy	SBI Ventures Two株式会社 SBI Ventures Two Co., Ltd.	passive	1.7M	¥700	+14.3%	¥1.2B ($7.8M)
2023-10-30	BUY	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	650.0K	¥700	+14.3%	¥455M ($2.9M)
2023-10-24	BUY	Market Buy	SBIインベストメント株式会社 SBI Investment Co., Ltd.	passive	650.0K	¥809	-1.1%	¥526M ($3.4M)
2023-10-24	BUY	Market Buy	SBI Ventures Two株式会社 SBI Ventures Two Co., Ltd.	passive	1.7M	¥809	-1.1%	¥1.4B ($9.0M)
2023-10-23	BUY	Market Buy	DCIパートナーズ株式会社 DCI Partners Co., Ltd.	passive	1.1M	¥827	-3.3%	¥945M ($6.1M)
2023-10-23	BUY	Market Buy	伊藤忠テクノロジーベンチャーズ株式会社 ITOCHU Technology Ventures, Inc.	passive	715.0K	¥827	-3.3%	¥591M ($3.8M)
2023-10-20	BUY	unknown	福島弘明 KOMEI FUKUSHIMA	strategic	2.4M	¥864	-7.4%	¥2.1B ($13.6M)
2023-10-20	BUY	unknown	岡野栄之 HIDEYUKI OKANO	strategic	1.3M	¥864	-7.4%	¥1.1B ($7.1M)
2023-10-20	BUY	unknown	中村雅也 MASAYA NAKAMURA	strategic	1.3M	¥864	-7.4%	¥1.1B ($7.1M)

Frequently asked questions

Who has been buying K Pharma,Inc. stock?: 9 distinct investors have filed 11 disclosed large-shareholding filings in K Pharma,Inc. (4896), most recently on 2026-04-13. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does K Pharma,Inc. have?: K Pharma,Inc. has 11 buy-side and 9 sell-side disclosures on record, covering ¥9.2B ($59.3M) in total reported value, spanning 2023-10-20 to 2026-04-13.
Where does StockDrifts get K Pharma,Inc. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for K Pharma,Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.