StockDriftsStockDriftsTsukuruba Inc. (2978) has 13 disclosed large-shareholding filings and 40 disclosed disposals on record, filed by 13 distinct investors. Together those filings cover ¥3.3B ($21.6M) in reported transaction value. The earliest filing StockDrifts holds for Tsukuruba Inc. is dated 2021-04-01; the most recent is 2026-05-08. Across these filings the average return since disclosure is -25.79%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-09-18 | BUY | unknown | 合同会社エム | strategic | 495.5K | ¥325 | - | - |
| 2026-09-18 | BUY | unknown | 中村真広 | strategic | 350.0K | ¥325 | - | - |
| 2026-09-18 | SELL | unknown | 合同会社エム | strategic | 495.5K | ¥325 | +3.4% | ¥127M ($817K) |
| 2026-09-18 | SELL | unknown | 中村真広 | strategic | 350.0K | ¥325 | +3.4% | ¥146M ($945K) |
| 2026-05-08 | SELL | unknown | 村上浩輝 | strategic | 2.2M | ¥420 | +25.2% | ¥46M ($297K) |
| 2026-05-08 | SELL | unknown | 株式会社エイチ | strategic | 1.2M | ¥420 | +25.2% | ¥14M ($88K) |
| 2026-04-22 | BUY | Market Buy | 株式会社PKSHA Technology代表取締役 上野山 勝也 | strategic | 1.2M | ¥408 | -23.0% | ¥131M ($843K) |
| 2026-04-22 | BUY | Market Buy | 合同会社PKSHA Technology Capital代表社員 株式会社PKSHA Technology職務執行者 久保田 潤至 | passive | 86.0K | ¥408 | - | - |
| 2026-04-03 | BUY | Market Buy | 村上浩輝 | strategic | 2.3M | ¥425 | -26.1% | ¥4M ($26K) |
| 2026-04-03 | BUY | Market Buy | 株式会社エイチ | strategic | 1.2M | ¥425 | - | - |
| 2026-03-24 | BUY | unknown | 株式会社PKSHA Technology代表取締役 上野山 勝也 | strategic | 894.7K | ¥432 | -27.3% | ¥387M ($2.5M) |
| 2026-03-24 | BUY | Market Buy | 合同会社PKSHA Technology Capital代表社員 株式会社PKSHA Technology職務執行者 久保田 潤至 | passive | 86.0K | ¥432 | -27.3% | ¥37M ($240K) |
| 2026-03-24 | BUY | unknown | 株式会社PKSHA Technology | strategic | 894.7K | ¥432 | -27.3% | ¥387M ($2.5M) |
| 2026-03-24 | BUY | unknown | 合同会社PKSHA Technology Capital | passive | 86.0K | ¥432 | -27.3% | ¥37M ($240K) |
| 2026-03-24 | BUY | unknown | 株式会社PKSHA Technology代表取締役 上野山 勝也 | strategic | 894.7K | ¥432 | -27.3% | ¥387M ($2.5M) |
| 2026-03-24 | BUY | unknown | 合同会社PKSHA Technology Capital代表社員 株式会社PKSHA Technology職務執行者 久保田 潤至 | passive | 86.0K | ¥432 | -27.3% | ¥37M ($240K) |
| 2026-03-19 | SELL | unknown | 中村真広 | strategic | 350.0K | ¥441 | +28.8% | ¥199M ($1.3M) |
| 2026-03-19 | SELL | unknown | 合同会社エム | strategic | 495.5K | ¥441 | +28.8% | ¥172M ($1.1M) |
| 2026-03-19 | SELL | unknown | 中村真広 | strategic | 350.0K | ¥441 | +28.8% | ¥199M ($1.3M) |
| 2026-03-19 | SELL | unknown | 合同会社エム | strategic | 495.5K | ¥441 | +28.8% | ¥172M ($1.1M) |
| 2026-02-13 | BUY | unknown | 竹内 真 Shin Takeuchi | activist | 720.2K | ¥448 | -29.9% | ¥323M ($2.1M) |
| 2026-01-28 | SELL | unknown | 中村真広 | strategic | 800.5K | ¥455 | +31.0% | ¥7M ($45K) |
| 2026-01-28 | SELL | unknown | 合同会社エム | strategic | 885.0K | ¥455 | +31.0% | ¥1M ($7K) |
| 2026-01-23 | BUY | unknown | 村上浩輝 | strategic | 2.3M | ¥465 | - | - |
| 2026-01-23 | BUY | unknown | 株式会社エイチ | strategic | 1.2M | ¥465 | - | - |
| 2025-09-26 | SELL | unknown | 株式会社エイチ H Co., Ltd. | activist | 1.2M | ¥589 | +46.7% | ¥1M ($9K) |
| 2025-09-26 | SELL | unknown | 村上浩輝 Hiroki Murakami | strategic | 2.3M | ¥589 | +46.7% | ¥6M ($36K) |
| 2025-09-26 | SELL | unknown | 株式会社エイチ H Co., Ltd. | activist | 1.2M | ¥589 | +46.7% | ¥1M ($9K) |
| 2025-09-26 | SELL | unknown | 村上浩輝 Hiroki Murakami | strategic | 2.3M | ¥589 | +46.7% | ¥6M ($36K) |
| 2024-12-25 | SELL | unknown | 中村真広 Masahiro Nakamura | strategic | 814.0K | ¥753 | +58.3% | ¥125K ($808) |
| 2024-12-25 | SELL | unknown | 合同会社エム M LLC | strategic | 885.0K | ¥753 | +58.3% | ¥2K ($11) |
| 2024-12-18 | BUY | Market Buy | 村上浩輝 Hiroki Murakami | strategic | 2.3M | ¥767 | -59.1% | ¥87M ($562K) |
| 2024-12-18 | SELL | Market Buy | 株式会社エイチ H Co., Ltd. | activist | 1.2M | ¥767 | +59.1% | ¥5M ($35K) |
| 2024-04-05 | SELL | unknown | 合同会社エム M LLC | strategic | 885.0K | ¥953 | +67.0% | ¥1M ($7K) |
| 2024-04-05 | SELL | unknown | 中村真広 Masahiro Nakamura | strategic | 979.1K | ¥953 | +67.0% | ¥45M ($287K) |
| 2024-01-10 | SELL | unknown | 中村真広 Masahiro Nakamura | strategic | 1.0M | ¥810 | +61.2% | ¥100M ($646K) |
| 2024-01-10 | SELL | unknown | 合同会社エム M LLC | strategic | 885.0K | ¥810 | +61.2% | ¥945K ($6K) |
| 2023-09-19 | SELL | unknown | 中村真広 Masahiro Nakamura | strategic | 1.1M | ¥1,063 | +70.5% | ¥61M ($391K) |
| 2023-09-19 | SELL | unknown | 合同会社エム M LLC | activist | 885.0K | ¥1,063 | +70.5% | ¥80M ($519K) |
| 2023-03-10 | SELL | unknown | 合同会社エム M LLC | activist | 950.0K | ¥734 | +57.2% | ¥4M ($27K) |
| 2023-03-10 | SELL | unknown | 中村真広 Masahiro Nakamura | strategic | 1.2M | ¥734 | +57.2% | ¥81M ($523K) |
| 2022-11-22 | SELL | unknown | 株式会社丸井グループ MARUI GROUP CO.,LTD. | strategic | 700 | ¥913 | +65.6% | ¥587M ($3.8M) |
| 2022-03-17 | SELL | unknown | 中村真広 Masahiro Nakamura | strategic | 1.3M | ¥626 | +49.8% | ¥5M ($32K) |
| 2022-03-17 | SELL | unknown | 合同会社エム M LLC | activist | 950.0K | ¥626 | +49.8% | ¥4M ($23K) |
| 2022-02-02 | SELL | unknown | 村上浩輝 Hiroki Murakami | strategic | 2.1M | ¥582 | +46.0% | ¥1M ($9K) |
| 2022-02-02 | SELL | unknown | 株式会社エイチ H Co., Ltd. | activist | 1.1M | ¥582 | +46.0% | ¥663K ($4K) |
| 2022-01-11 | SELL | Market Buy | みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd. | unknown | 0 | ¥762 | +58.8% | ¥46M ($297K) |
| 2022-01-11 | BUY | Market Buy | アセットマネジメントOne株式会社 Asset Management One Co., Ltd. | other | 771.7K | ¥762 | -58.8% | ¥89M ($571K) |
| 2022-01-11 | BUY | Market Buy | みずほ証券 株式会社 Mizuho Securities Co., Ltd. | other | 32.7K | ¥762 | - | ¥25M ($161K) |
| 2021-11-05 | SELL | unknown | 村上浩輝 Hiroki Murakami | strategic | 2.1M | ¥1,083 | +71.0% | ¥123M ($795K) |
Showing the 50 most recent of 65 filings.
Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.