Who has been buying tripla Co., Ltd. stock?

12 distinct investors have filed 27 disclosed large-shareholding filings in tripla Co., Ltd. (5136), most recently on 2026-03-11. 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 tripla Co., Ltd. have?

tripla Co., Ltd. has 27 buy-side and 8 sell-side disclosures on record, covering ¥2.9B ($19.0M) in total reported value, spanning 2022-11-28 to 2026-03-11.

Where does StockDrifts get tripla Co., Ltd. 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.

tripla Co., Ltd. 5136

Company

tripla株式会社tripla Co., Ltd.

Investors

Buys

Total Value

¥2.9B ($19.0M)

Avg Return

-10.93%

Last Filing

2026-03-11

tripla Co., Ltd. (5136) has 27 disclosed large-shareholding filings and 8 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥2.9B ($19.0M) in reported transaction value. The earliest filing StockDrifts holds for tripla Co., Ltd. is dated 2022-11-28; the most recent is 2026-03-11. 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 -10.93%, 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
2026-03-11	SELL	Market Buy	ヴォイチェフヤクブポドバス(Wojciech Jakub Podobas) Wojciech Jakub Podobas	passive	242.0K	¥1,395	-8.2%	¥83M ($538K)
2025-12-22	BUY	unknown	レオス・キャピタルワークス株式会社	passive	165.0K	¥1,859	-18.8%	¥249M ($1.6M)
2025-12-22	BUY	unknown	株式会社SBI証券	other	221.8K	¥1,859	-18.8%	¥335M ($2.2M)
2025-11-20	SELL	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	200.1K	¥1,566	+3.6%	¥154M ($994K)
2025-11-07	BUY	unknown	株式会社SBI証券 SBI SECURITIES Co.,Ltd.	other	298.7K	¥1,627	-7.2%	¥486M ($3.1M)
2025-09-11	SELL	unknown	鳥生格 Kaku Toriu	activist	1.2M	¥2,125	+28.9%	¥39M ($250K)
2025-06-25	SELL	Market Buy	株式会社アドベンチャー Adventure, Inc.	passive	203.9K	¥2,238	+32.5%	¥215M ($1.4M)
2025-05-02	SELL	unknown	鳥生格 Kaku Toriu	activist	1.2M	¥2,384	+36.7%	¥20M ($126K)
2025-05-01	BUY	Market Buy	ヴォイチェフヤクブポドバス(Wojciech Jakub Podobas) Wojciech Jakub Podobas	passive	300.0K	¥2,402	-37.1%	¥721M ($4.6M)
2024-12-06	BUY	Market Buy	株式会社アドベンチャー Adventure, Inc.	passive	360.3K	¥1,370	+10.2%	¥85M ($549K)
2024-11-13	BUY	Market Buy	株式会社アドベンチャー Adventure, Inc.	passive	297.8K	¥1,225	+23.3%	¥365M ($2.4M)
2024-06-26	SELL	unknown	鳥生格 Kaku Toriu	activist	1.2M	¥1,526	+1.1%	¥77M ($497K)
2023-11-15	BUY	Market Buy	鳥生格 Kaku Toriu	activist	1.2M	¥1,448	+4.3%	¥34M ($218K)
2023-01-05	BUY	Market Buy	リード・キャピタル・マネージメント株式会社、谷本徹、高階匡史、鈴木智也 Reed Capital Management Co., Ltd., Toru Tanimoto, Tadashi Takashina, Tomoya Suzuki	unknown	239.1K	¥1,968	-23.3%	¥471M ($3.0M)
2023-01-05	BUY	Market Buy	鈴木智也 Tomoya Suzuki	passive	239.1K	¥1,968	-23.3%	¥5M ($30K)
2023-01-05	BUY	Market Buy	谷本徹 Toru Tanimoto	passive	239.1K	¥1,968	-23.3%	¥5M ($30K)
2023-01-05	BUY	Market Buy	高階匡史 Masashi Takashina	passive	239.1K	¥1,968	-23.3%	¥5M ($30K)
2023-01-05	BUY	Market Buy	リード・キャピタル・マネージメント株式会社 Lead Capital Management Co.,Ltd.	passive	239.1K	¥1,968	-23.3%	¥5M ($30K)
2022-12-28	SELL	Market Buy	イノベーション・エンジン株式会社 Innovation Engine, Inc.	passive	217.0K	¥2,099	+28.1%	¥116M ($751K)
2022-12-26	BUY	Market Buy	高階匡史 Masashi Takashina	passive	292.3K	¥1,970	-23.4%	¥6M ($37K)
2022-12-26	BUY	Market Buy	谷本徹 Toru Tanimoto	passive	292.3K	¥1,970	-23.4%	¥6M ($37K)
2022-12-26	BUY	Market Buy	鈴木智也 Tomoya Suzuki	passive	292.3K	¥1,970	-23.4%	¥6M ($37K)
2022-12-26	BUY	Market Buy	高階匡史 Masashi Takashina	passive	292.3K	¥1,970	-23.4%	¥6M ($37K)
2022-12-26	BUY	Market Buy	谷本徹 Toru Tanimoto	passive	292.3K	¥1,970	-23.4%	¥6M ($37K)
2022-12-26	BUY	Market Buy	リード・キャピタル・マネージメント株式会社 Lead Capital Management Co.,Ltd.	passive	292.3K	¥1,970	-23.4%	¥6M ($37K)
2022-12-26	BUY	Market Buy	リード・キャピタル・マネージメント株式会社、谷本徹、高階匡史、鈴木智也 Reed Capital Management Co., Ltd., Toru Tanimoto, Tadashi Takashina, Tomoya Suzuki	unknown	292.3K	¥1,970	-23.4%	¥576M ($3.7M)
2022-12-26	BUY	Market Buy	鈴木智也 Tomoya Suzuki	passive	292.3K	¥1,970	-23.4%	¥6M ($37K)
2022-12-26	BUY	Market Buy	リード・キャピタル・マネージメント株式会社、谷本徹、高階匡史、鈴木智也 Reed Capital Management Co., Ltd., Toru Tanimoto, Tadashi Takashina, Tomoya Suzuki	unknown	292.3K	¥1,970	-23.4%	¥576M ($3.7M)
2022-12-26	BUY	Market Buy	リード・キャピタル・マネージメント株式会社 Lead Capital Management Co.,Ltd.	passive	292.3K	¥1,970	-23.4%	¥6M ($37K)
2022-12-19	SELL	Market Buy	イノベーション・エンジン株式会社 Innovation Engine, Inc.	passive	272.5K	¥1,758	+14.1%	¥186M ($1.2M)
2022-12-05	BUY	Market Buy	高階匡史 Masashi Takashina	passive	348.0K	¥1,419	+6.4%	¥494M ($3.2M)
2022-12-05	BUY	Market Buy	リード・キャピタル・マネージメント株式会社、谷本徹、高階匡史、鈴木智也 Reed Capital Management Co., Ltd., Toru Tanimoto, Tadashi Takashina, Tomoya Suzuki	unknown	348.0K	¥1,419	+6.4%	¥494M ($3.2M)
2022-12-05	BUY	Market Buy	鈴木智也 Tomoya Suzuki	passive	348.0K	¥1,419	+6.4%	¥494M ($3.2M)
2022-12-05	BUY	Market Buy	谷本徹 Toru Tanimoto	passive	348.0K	¥1,419	+6.4%	¥494M ($3.2M)
2022-12-05	BUY	Market Buy	リード・キャピタル・マネージメント株式会社 Lead Capital Management Co.,Ltd.	passive	348.0K	¥1,419	+6.4%	¥494M ($3.2M)
2022-11-30	BUY	unknown	鳥生格 Kaku Toriu	activist	1.2M	¥1,523	-0.8%	¥268M ($1.7M)
2022-11-30	BUY	unknown	高橋和久 Kazuhisa Takahashi	activist	800.0K	¥1,523	-0.8%	¥193M ($1.2M)
2022-11-28	BUY	Market Buy	イノベーション・エンジン株式会社 Innovation Engine, Inc.	passive	378.2K	¥1,532	-1.4%	¥579M ($3.7M)

Frequently asked questions

Who has been buying tripla Co., Ltd. stock?: 12 distinct investors have filed 27 disclosed large-shareholding filings in tripla Co., Ltd. (5136), most recently on 2026-03-11. 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 tripla Co., Ltd. have?: tripla Co., Ltd. has 27 buy-side and 8 sell-side disclosures on record, covering ¥2.9B ($19.0M) in total reported value, spanning 2022-11-28 to 2026-03-11.
Where does StockDrifts get tripla Co., Ltd. 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 tripla Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.