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Doosan Tesna 131970

Company
두산테스나Doosan Tesna
Insiders
1
Buys
0
Total Value
₩2.1B ($1.4M)
Avg Return
-20.63%
Last Filing
2026-02-25

Doosan Tesna (131970) has 0 disclosed insider purchases and 3 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩2.1B ($1.4M) in reported transaction value. The earliest filing StockDrifts holds for Doosan Tesna is dated 2025-10-24; the most recent is 2026-02-25. Across these filings the average return since disclosure is -20.63%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2026-02-25BUY자사주상여금
김도원
Kim Do-won
CEO2.1K---
2026-02-25BUY자사주상여금
김윤건
Kim Yun-geon
president1.8K---
2026-01-08SELLMarket Sell
최병철
Choi Byeong-cheol
Managing Director-14.6K₩52,100-23.8%₩763M ($530K)
2026-01-07SELLMarket Sell
최병철
Choi Byeong-cheol
Managing Director-15.1K₩52,300-23.3%₩787M ($547K)
2026-01-06SELLMarket Sell
최병철
Choi Byeong-cheol
Managing Director-9.5K₩56,200-14.8%₩534M ($371K)
2025-10-24BUY기타
김경주
Kyungju Kim
Managing Director3.0K₩48,700+32.4%₩146M ($101K)
2025-10-24BUY기타
서승준
Seungjun Seo
Managing Director3.0K₩48,700+32.4%₩146M ($101K)

Frequently asked questions

Who has been buying Doosan Tesna stock?
1 distinct insiders have filed 0 disclosed insider purchases in Doosan Tesna (131970), most recently on 2026-02-25. 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 Doosan Tesna have?
Doosan Tesna has 0 buy-side and 3 sell-side disclosures on record, covering ₩2.1B ($1.4M) in total reported value, spanning 2025-10-24 to 2026-02-25.
Do insider buys in Korean stocks predict returns?
Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.