S amsung Electronics has landed a major contract worth $16.5 billion to manufacture semiconductor chips for an unnamed global company, according to a regulatory filing made in South Korea. The multi-year agreement represents one of the largest chip manufacturing deals in recent history.

Samsung Electronics (005930.KS) said on Monday it has signed a contract valued at $16.5 billion to supply semiconductors to a major global corporation, in a regulatory filing.

Samsung’s filing includes a notice to investors that the deal could be canceled or changed, but details like where the chips will be made (how’s that Texas plant going?) or what they’ll do are all un...