StockDriftsStockDriftsSanki Service Corporation (6044) has 41 disclosed large-shareholding filings and 25 disclosed disposals on record, filed by 12 distinct investors. Together those filings cover ¥2.2B ($14.3M) in reported transaction value. The earliest filing StockDrifts holds for Sanki Service Corporation is dated 2021-05-06; the most recent is 2025-10-31. Across these filings the average return since disclosure is +58.06%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Purpose | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2025-10-31 | BUY | Market Buy | シンメンテホールディングス株式会社 Shin Maint Holdings Co.,Ltd. | other | 613.1K | ¥2,173 | -13.0% | ¥147M ($951K) |
| 2025-09-29 | BUY | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 444.8K | ¥1,905 | - | - |
| 2025-09-29 | BUY | Market Buy | 株式会社UH Partners 2 UH Partners 2, Inc. | passive | 445.3K | ¥1,905 | - | - |
| 2025-09-29 | BUY | Market Buy | 株式会社UH Partners 3 UH Partners 3 Co., Ltd. | passive | 255.8K | ¥1,905 | -0.8% | ¥33M ($210K) |
| 2025-09-29 | BUY | Market Buy | 株式会社エスアイエル SIL Co., Ltd. | passive | 90.4K | ¥1,905 | - | - |
| 2025-09-04 | BUY | Market Buy | シンメンテホールディングス株式会社 Shin Maint Holdings Co.,Ltd. | other | 545.3K | ¥1,756 | +7.6% | ¥116M ($746K) |
| 2025-07-24 | BUY | Market Buy | シンメンテホールディングス株式会社 Shin Maint Holdings Co.,Ltd. | other | 479.3K | ¥1,371 | +37.9% | ¥105M ($675K) |
| 2025-06-05 | BUY | Market Buy | シンメンテホールディングス株式会社 Shin Maint Holdings Co.,Ltd. | other | 403.2K | ¥1,103 | +71.3% | ¥81M ($520K) |
| 2025-06-05 | BUY | unknown | シンメンテホールディングス株式会社 Shin Maint Holdings Co.,Ltd. | other | 330.0K | ¥1,103 | - | - |
| 2025-01-09 | BUY | unknown | シンメンテホールディングス株式会社 Shin Maint Holdings Co.,Ltd. | other | 330.0K | ¥996 | +89.8% | ¥329M ($2.1M) |
| 2023-03-07 | BUY | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 444.8K | ¥927 | - | - |
| 2023-03-07 | BUY | Market Buy | 株式会社UH Partners 2 UH Partners 2, Inc. | passive | 445.3K | ¥927 | - | - |
| 2023-03-07 | BUY | Market Buy | 株式会社UH Partners 3 UH Partners 3 Co., Ltd. | passive | 238.7K | ¥927 | +103.9% | ¥62M ($398K) |
| 2023-03-07 | BUY | Market Buy | 株式会社エスアイエル SIL Co., Ltd. | passive | 90.4K | ¥927 | - | - |
| 2022-12-08 | BUY | unknown | 中島 義兼 Yoshikane Nakashima | other | 990.3K | ¥907 | - | ¥885M ($5.7M) |
| 2022-12-08 | BUY | unknown | 株式会社中島産業 Nakajima Sangyo Co., Ltd. | activist | 325.0K | ¥907 | - | ¥35M ($229K) |
| 2022-12-08 | SELL | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 444.8K | ¥907 | -108.4% | ¥43M ($277K) |
| 2022-12-08 | BUY | Market Buy | 中島義兼 Yoshikane Nakashima | other | 430.9K | ¥907 | +108.4% | ¥221M ($1.4M) |
| 2022-12-08 | BUY | unknown | 中島 義兼 Yoshikane Nakashima | other | 429.8K | ¥907 | - | ¥44M ($281K) |
| 2022-12-08 | BUY | unknown | 中島 義兼 Yoshikane Nakashima | other | 429.8K | ¥907 | - | ¥25M ($162K) |
| 2022-12-08 | BUY | unknown | 中島 義兼 Yoshikane Nakashima | other | 429.8K | ¥907 | - | ¥390M ($2.5M) |
| 2022-12-08 | BUY | unknown | 中島 諒子 Ryoko Nakashima | strategic | 97.5K | ¥907 | - | ¥88M ($571K) |
| 2022-12-08 | BUY | unknown | 中島 諒子 Ryoko Nakashima | strategic | 97.5K | ¥907 | - | ¥15M ($94K) |
| 2022-12-08 | BUY | unknown | 株式会社中島産業 Nakajima Sangyo Co., Ltd. | activist | 325.0K | ¥907 | - | ¥295M ($1.9M) |
| 2022-12-08 | BUY | unknown | 中島 薫子 Kaoruko Nakajima | strategic | 75.0K | ¥907 | - | ¥68M ($439K) |
| 2022-12-08 | BUY | unknown | 中島 薫子 Kaoruko Nakajima | strategic | 75.0K | ¥907 | - | ¥6M ($39K) |
| 2022-12-08 | BUY | unknown | 中島 薫子 Kaoruko Nakajima | strategic | 75.0K | ¥907 | - | ¥8M ($49K) |
| 2022-12-08 | BUY | unknown | 株式会社中島産業 Nakajima Sangyo Co., Ltd. | activist | 325.0K | ¥907 | - | ¥10M ($67K) |
| 2022-12-08 | BUY | unknown | 中島 薫子 Kaoruko Nakajima | strategic | 225.0K | ¥907 | - | ¥23M ($147K) |
| 2022-12-08 | SELL | Market Buy | 株式会社UH Partners 2 UH Partners 2, Inc. | passive | 445.3K | ¥907 | -108.4% | ¥44M ($281K) |
| 2022-12-08 | BUY | Market Buy | 株式会社UH Partners 3 UH Partners 3 Co., Ltd. | passive | 172.7K | ¥907 | +108.4% | ¥21M ($139K) |
| 2022-12-08 | SELL | Market Buy | 株式会社エスアイエル SIL Co., Ltd. | passive | 90.4K | ¥907 | -108.4% | ¥9M ($58K) |
| 2022-12-08 | SELL | Market Buy | 中島薫子 Kaoruko Nakajima | strategic | 225.0K | ¥907 | -108.4% | ¥28M ($181K) |
| 2022-12-07 | SELL | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 87.3K | ¥916 | -106.3% | ¥48M ($309K) |
| 2022-12-07 | SELL | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 71.9K | ¥916 | -106.3% | ¥2M ($14K) |
| 2022-12-07 | SELL | unknown | 野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd. | other | 106.5K | ¥916 | -106.3% | ¥4M ($28K) |
| 2022-10-28 | BUY | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 444.8K | ¥909 | - | - |
| 2022-10-28 | BUY | Market Buy | 株式会社UH Partners 2 UH Partners 2, Inc. | passive | 445.3K | ¥909 | - | - |
| 2022-10-28 | BUY | Market Buy | 株式会社UH Partners 3 UH Partners 3 Co., Ltd. | passive | 134.1K | ¥909 | +107.9% | ¥55M ($352K) |
| 2022-10-28 | BUY | Market Buy | 株式会社エスアイエル SIL Co., Ltd. | passive | 90.4K | ¥909 | - | - |
| 2022-10-05 | BUY | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 444.8K | ¥890 | - | - |
| 2022-10-05 | BUY | Market Buy | 株式会社UH Partners 2 UH Partners 2, Inc. | passive | 445.3K | ¥890 | - | - |
| 2022-10-05 | BUY | Market Buy | 株式会社UH Partners 3 UH Partners 3 Co., Ltd. | passive | 74.4K | ¥890 | +112.4% | ¥53M ($345K) |
| 2022-10-05 | BUY | Market Buy | 株式会社エスアイエル SIL Co., Ltd. | passive | 90.4K | ¥890 | - | - |
| 2022-08-08 | BUY | Market Buy | 株式会社エスアイエル SIL Co., Ltd. | passive | 90.4K | ¥979 | - | - |
| 2022-08-08 | BUY | Market Buy | 光通信株式会社 Hikari Tsushin K.K. | passive | 444.8K | ¥979 | - | - |
| 2022-08-08 | BUY | Market Buy | 株式会社UH Partners 2 UH Partners 2, Inc. | passive | 445.3K | ¥979 | +93.0% | ¥45M ($289K) |
| 2022-08-08 | BUY | Market Buy | 株式会社UH Partners 3 UH Partners 3 Co., Ltd. | passive | 14.2K | ¥979 | - | ¥14M ($90K) |
| 2022-08-04 | SELL | unknown | 野村證券株式会社 Nomura Securities Co.,Ltd. | other | 139.6K | ¥977 | -93.5% | ¥71M ($457K) |
| 2022-08-04 | BUY | unknown | ノムラ インターナショナル ピーエルシー NOMURA INTERNATIONAL PLC | other | 74.4K | ¥977 | +93.5% | ¥74M ($480K) |
Showing the 50 most recent of 110 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.