Samsung names three new CEOs: Kim Kinam for device solutions, Hyunsuk Kim for consumer electronics, and Dongjin Koh for the IT & mobile communications division
Context & Ripple Effects
In late 2017 Samsung runs a deliberate three-CEO structure: Kim Kinam over Device Solutions (semiconductors), Hyunsuk Kim over Consumer Electronics, and Dongjin Koh over IT & Mobile Communications — one chief per profit pillar. The related coverage shows how that architecture aged: Koh held mobile only until Taemoon Roh took over the smartphone division in January 2020, and within two years Samsung collapsed two of the three pillars when it merged mobile and consumer electronics into a single unit under JH Han in December 2021.
The semiconductor seat proved just as fluid — Kye-Hyun Kyung was later replaced by Young-Hyun Jun, who then became co-CEO and memory chief. The throughline is that the executives installed in this 2017 reshuffle seeded the succession chain that culminated in TM Roh's promotion to co-CEO and DX division head in November 2025, making this announcement the starting point of Samsung's current leadership map.
First-order effects
- Each of Samsung's three core businesses — chips, consumer electronics, and mobile — now has a dedicated CEO, ending any shared or acting leadership across those divisions.
- Dongjin Koh formally consolidates control of IT & Mobile Communications, the division he had been running, giving him full CEO standing over the world's largest smartphone business.
Second-order effects
- The mobile seat becomes a stepping stone rather than a terminus: Koh's handoff to Taemoon Roh in 2020 puts Roh on the path that leads to the DX headship and co-CEO role he holds after Han Jong-Hee's death.
- Device Solutions' separate CEO line keeps semiconductor leadership distinct from the device side, which later produces its own churn — Kyung yielding to Jun Young-hyun, then Jun doubling as co-CEO and memory head.
Third-order effects
- Samsung's governance settles into a repeating pattern: rotate insiders through divisional CEO posts, then periodically reorganize the boxes themselves (three silos in 2017, a merged DX unit by 2021) while preserving a multi-CEO top layer — succession by restructuring rather than by single-heir designation.
- If the pattern holds, the device-versus-components boundary stays the company's main organizational hinge, with every future reshuffle repricing the relative weight of the chip business against the phone-and-TV business inside the co-CEO structure.
The trend: Samsung treats executive reshuffles as its primary succession mechanism, cycling leaders through divisional CEO seats before consolidating them into a rotating co-CEO layer at the top.