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Sankyo Seiko Co.,Ltd. Stock: price and insider trades · Japan

三共生興株式会社

No insider purchase over the last 90 days. The latest, by Unknown, was filed 08 Jul 2022.

Sankyo Seiko Co.,Ltd.: what insiders have been doing

Sankyo Seiko Co.,Ltd. belongs to the Banks sector. Filings by its managers are published through EDINET (Japan FSA). In the past year (26 October 2025 to 26 October 2026), 1 filing came from 1 insider.

Not one of the filings records a straightforward purchase or sale on the market. Grants and option exercises follow pay plans set in advance, so they reveal less about an insider's own view than a purchase made with personal money.

With 1 filing in twelve months, the company is quieter than the median of 3 filings across the 3,205 companies we follow on the same exchange. Over the whole record (from 2022), the tally stands at 5 purchases and 8 sales.

There has been no open-market purchase by an insider of Sankyo Seiko Co.,Ltd. for at least a year.

These figures are compiled from regulatory filings published by EDINET (Japan FSA). They describe what insiders did and are not a recommendation.

Insider Decl.
17
Thresholds
n/a
Buy Volume
n/a
5 ops. · all time
Sell Volume
€12M
8 ops. · all time

This score ranks the purchase within its own market. A position size is suggested only on the venues of the backtested strategy universe; elsewhere, signals stay on watch. Not investment advice.

Last declaration on 1 June 2026
Declarations17 total
  • ●
    Related company / holdingExecutives
    0EDINET
    ShareXTKSEDINET:S100Y6T8
  • ●
    Related company / holdingExecutives
    0EDINET
    ShareXTKSEDINET:S100UH2K
  • ●
    Related company / holdingExecutives
    0EDINET
    ShareXTKSEDINET:S100QTF1
  • ●
    Unknown
    Large shareholderExecutives(filed)
    5EDINET
    0.0% of flowShareXTKSEDINET:S100OOG1
  • ▼
    Unknown
    Large shareholderExecutives
    0EDINET
    3,000 sharesShareXTKSEDINET:S100OOG1:T2
  • ▲
    Unknown
    Large shareholderExecutives
    0EDINET
    2,800 sharesShareXTKSEDINET:S100OOG1:T4
    Canonical exit: 17 Aug 2022 (T+90)
  • ▲
    Unknown
    Large shareholderExecutives
    0EDINET
    2,500 sharesShareXTKSEDINET:S100OOG1:T5
    Canonical exit: 22 Aug 2022 (T+90)
  • ▲
    Unknown
    Large shareholderExecutives
    0EDINET
    4,000 sharesShareXTKSEDINET:S100OOG1:T6
    Canonical exit: 24 Aug 2022 (T+90)
  • ▼
    Unknown
    Large shareholderExecutives
    0EDINET
    4,300 sharesShareXTKSEDINET:S100OOG1:T7
  • ▼
    Unknown
    Large shareholderExecutives
    0EDINET
    3,300 sharesShareXTKSEDINET:S100OOG1:T9
  • ▼
    Unknown
    Large shareholderExecutives
    0EDINET
    3,200 sharesShareXTKSEDINET:S100OOG1:T10
  • ▼
    Unknown
    Large shareholderExecutives
    0EDINET
    3,900 sharesShareXTKSEDINET:S100OOG1:T11
  • ▲
    Unknown
    Large shareholderExecutives
    0EDINET
    2,000 sharesShareXTKSEDINET:S100OOG1:T12
    Canonical exit: 15 Sept 2022 (T+90)
  • ▼
    Unknown
    Large shareholderExecutives
    2B JPY6EDINET
    2,695,700 shares@ JP¥635.006.5% of flowShareXOFFEDINET:S100OOG1:T13
  • ▼
    Unknown
    Large shareholderExecutives
    0EDINET
    1,500 sharesShareXTKSEDINET:S100OOG1:T1
  • ▲
    Unknown
    Large shareholderExecutives
    0EDINET
    1,000 sharesShareXTKSEDINET:S100OOG1:T3
    Canonical exit: 16 Aug 2022 (T+90)
  • ▼
    Unknown
    Large shareholderExecutives
    0EDINET
    1,100 sharesShareXTKSEDINET:S100OOG1:T8

17 of 17 declarations

About Sankyo Seiko Co.,Ltd.

Sankyo Seiko Co., Ltd. is a Japanese company operating in the finance and banking sector. It is listed on the Tokyo Stock Exchange under the symbol XTKS.