A subscription for stock of a corporation, whether made before or after the formation of a corporation, shall not be enforceable against a subscriber, unless in writing and signed by the subscriber or by such subscriber’s agent.
Del. Code tit. 8, § 166
Formalities required of stock subscriptions
8 Del
Official source: Delaware Code Online. Reproduced from public-domain Delaware statutes; confirm against the official source for the current text. Not legal advice.