South Korean prosecutors carried out a raid on Samsung Electronics headquarters in Suwon on June 11, 2026, amid suspicions of insider trading linked to Rainbow Robotics, a Samsung subsidiary [1, 2]. The investigation focuses on illicit profits made using confidential information during Samsung's acquisition of Rainbow Robotics shares between 2022 and 2024 [1, 2].
Authorities allege that several employees at Rainbow Robotics abused insider knowledge to gain financially. A total of 16 individuals, including the president and chief financial officer of Rainbow Robotics, were referred to prosecutors in relation to the case [1, 2].
Estimates of the illicit profits vary between sources. One report places the gains at 30 to 40 billion Korean won, while another assesses the amount at 3 to 4 billion Korean won (approximately 1.96 to 2.6 million U.S. dollars) [1, 2].
This is not the first search connected to the probe. Authorities previously searched Rainbow Robotics' headquarters in March 2026 before expanding the investigation to Samsung's main office [2].
The insider trading allegations center on transactions and information exchanges that occurred over a two-year span while Samsung acquired shares in Rainbow Robotics, raising questions about compliance within the acquisition process [1, 2].
South Korean prosecutors are continuing their investigation, and further developments are expected as they pursue charges against those implicated in the insider trading case.
