StockDriftsStockDriftsCookbiz Co.,Ltd. (6558) has 18 disclosed large-shareholding filings and 31 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥668M ($4.3M) in reported transaction value. The earliest filing StockDrifts holds for Cookbiz Co.,Ltd. is dated 2021-04-21; the most recent is 2026-03-05. Across these filings the average return since disclosure is -11.87%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-08-06 | BUY | Market Buy | 株式会社SBI証券 SBI SECURITIES Co.,Ltd. | other | 239.4K | ¥687 | -2.2% | ¥19M ($123K) |
| 2026-03-05 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKUROU | passive | 333.1K | ¥720 | - | ¥23M ($147K) |
| 2026-03-05 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKUROU | passive | 333.1K | ¥720 | -6.7% | ¥23M ($147K) |
| 2025-12-24 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 308.5K | ¥818 | -17.9% | ¥24M ($153K) |
| 2025-12-24 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 301.6K | ¥818 | - | ¥30M ($195K) |
| 2025-12-17 | BUY | unknown | 株式会社OICグループ OIC Group Co., Ltd. | strategic | 140.0K | ¥704 | -4.5% | ¥99M ($636K) |
| 2025-12-17 | BUY | unknown | 株式会社OICグループ OIC Group Co., Ltd. | strategic | 140.0K | ¥704 | - | ¥99M ($636K) |
| 2025-12-15 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 279.6K | ¥714 | - | ¥14M ($90K) |
| 2025-12-15 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 279.6K | ¥714 | -5.9% | ¥14M ($90K) |
| 2025-12-12 | BUY | unknown | 藪ノ 郁子 | strategic | 210.2K | ¥728 | - | - |
| 2025-12-12 | BUY | unknown | 藪ノ 賢次 | other | 1.0M | ¥728 | - | - |
| 2025-12-12 | BUY | unknown | 藪ノ 郁子 | strategic | 210.2K | ¥728 | - | - |
| 2025-12-12 | SELL | unknown | 藪ノ 賢次 | other | 908.8K | ¥728 | +7.7% | ¥102M ($658K) |
| 2025-12-09 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 260.0K | ¥650 | +3.4% | ¥24M ($152K) |
| 2025-12-09 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 264.7K | ¥650 | - | ¥39M ($251K) |
| 2025-12-04 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 223.7K | ¥584 | +15.1% | ¥13M ($85K) |
| 2025-12-04 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 223.7K | ¥584 | - | ¥13M ($85K) |
| 2025-10-29 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 201.0K | ¥620 | - | ¥20M ($127K) |
| 2025-10-29 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 205.0K | ¥620 | - | ¥22M ($143K) |
| 2025-10-29 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 169.1K | ¥620 | +8.4% | ¥18M ($117K) |
| 2025-10-29 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 169.1K | ¥620 | - | ¥18M ($117K) |
| 2025-10-29 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 201.0K | ¥620 | +8.4% | ¥20M ($127K) |
| 2025-09-16 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 139.8K | ¥659 | - | ¥92M ($594K) |
| 2025-09-16 | BUY | Market Buy | 山本 新九郎 YAMAMOTO SHINKURO | passive | 187.3K | ¥659 | +2.0% | ¥123M ($796K) |
| 2025-01-24 | SELL | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.0M | ¥787 | +14.6% | ¥5M ($31K) |
| 2025-01-24 | SELL | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.0M | ¥787 | +14.6% | ¥6M ($40K) |
| 2025-01-24 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 210.2K | ¥787 | +14.6% | ¥2M ($11K) |
| 2025-01-24 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 210.2K | ¥787 | +14.6% | ¥2M ($10K) |
| 2024-12-19 | BUY | Market Buy | 株式会社SBI証券 SBI SECURITIES Co.,Ltd. | other | 211.8K | ¥772 | -12.9% | ¥17M ($107K) |
| 2024-08-01 | BUY | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,162 | - | - |
| 2024-08-01 | BUY | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,162 | - | - |
| 2024-08-01 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 211.8K | ¥1,162 | +42.2% | ¥324K ($2K) |
| 2024-08-01 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 211.8K | ¥1,162 | +42.2% | ¥324K ($2K) |
| 2024-01-31 | BUY | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,470 | - | - |
| 2024-01-31 | BUY | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,470 | - | - |
| 2024-01-31 | BUY | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,470 | - | - |
| 2024-01-31 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 212.1K | ¥1,470 | +54.3% | ¥2M ($11K) |
| 2024-01-31 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 211.8K | ¥1,470 | +54.3% | ¥2M ($13K) |
| 2024-01-31 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 212.1K | ¥1,470 | +54.3% | ¥2M ($11K) |
| 2024-01-11 | SELL | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,140 | +41.0% | ¥51M ($326K) |
| 2024-01-11 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 213.3K | ¥1,140 | +41.0% | ¥17M ($107K) |
| 2024-01-11 | SELL | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,140 | +41.0% | ¥51M ($326K) |
| 2024-01-11 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 213.3K | ¥1,140 | +41.0% | ¥17M ($107K) |
| 2023-11-07 | BUY | Market Buy | 株式会社SBI証券 SBI SECURITIES Co.,Ltd. | other | 189.0K | ¥1,013 | -33.7% | ¥17M ($112K) |
| 2023-10-20 | BUY | Market Buy | コモンズ投信株式会社 commons asset management inc. | passive | 171.7K | ¥921 | -27.0% | ¥29M ($188K) |
| 2023-04-11 | BUY | Market Buy | コモンズ投信株式会社 commons asset management inc. | passive | 139.3K | ¥1,200 | - | ¥167M ($1.1M) |
| 2023-04-11 | BUY | Market Buy | コモンズ投信株式会社 Commons Asset Management | passive | 137.9K | ¥1,200 | -44.0% | ¥165M ($1.1M) |
| 2022-11-18 | SELL | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,281 | +47.5% | ¥23M ($150K) |
| 2022-11-18 | SELL | unknown | 藪ノ 賢次 Yabuno Kenji | other | 1.1M | ¥1,281 | +47.5% | ¥23M ($150K) |
| 2022-11-18 | SELL | unknown | 藪ノ 郁子 Ikuko Yabuno | strategic | 218.5K | ¥1,281 | +47.5% | ¥5M ($31K) |
Showing the 50 most recent of 75 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.