Samsung's Leadership Crisis Deepens as CEO Plans Exit

SEOUL—The head of Samsung Electronics Co.’s components business, in a surprise move, announced plans to resign, acknowledging that the firm faces an “unprecedented crisis” and is struggling to find new growth prospects. The development came after the South Korean tech giant said it expected another record-breaking quarter.

Samsung Electronics Chief Executive Kwon Oh-hyun, 64 years old, announced his plan to resign in a statement Friday. He will do so after his successor is named, according to people familiar with the matter,...