Del. Code Ann. tit. 8, § 253
(a) In any case in which: (1) at least 90% of the outstanding shares of each class of the stock of a corporation or corporations (other than a corporation which has in its certificate of incorporation the provision required by § 251(g)(7)(A) and (B) of this title), of which class there are outstanding shares that, absent this subsection, would be entitled to vote on such merger, is owned by a corporation of this State or a foreign corporation, and (2) 1 or more of such corporations is a corporation of this State, unless the laws of the jurisdiction or jurisdictions under which the foreign corporation or corporations are organized prohibit such merger, the parent corporation may either merge the subsidiary corporation or corporations into itself and assume all of its or their obligations, or merge itself, or itself and 1 or more of such other subsidiary corporations, into 1 of the subsidiary corporations by executing, acknowledging and filing, in accordance with § 103 of this title, a certificate of such ownership and merger setting forth a copy of the resolution of its board of directors to so merge and the date of the adoption; provided, however, that in case the parent corporation shall not own all the outstanding stock of all the subsidiary corporations, parties to a merger as aforesaid, the resolution of the board of directors of the parent corporation shall state the terms and conditions of the merger, including the securities, cash, property, or rights to be issued, paid, delivered or granted by the surviving corporation upon surrender of each share of the subsidiary corporation or corporations not owned by the parent corporation, or the cancellation of some or all of such shares. Any of the terms of the resolution of the board of directors to so merge may be made dependent upon facts ascertainable outside of such resolution, provided that the manner in which such facts shall operate upon the terms of the resolution is clearly and expressly set forth in the resolution. The term “facts,” as used in the preceding sentence, includes, but is not limited to, the occurrence of any event, including a determination or action by any person or body, including the corporation. If the parent corporation be not the surviving corporation, the resolution shall include provision for the pro rata issuance of stock of the surviving corporation to the holders of the stock of the parent corporation on surrender of any certificates therefor, and the certificate of ownership and merger shall state that the proposed merger has been approved by a majority of the outstanding stock of the parent corporation entitled to vote thereon at a meeting duly called and held after 20 days’ notice of the purpose of the meeting given to each such stockholder at the stockholder’s address as it appears on the records of the corporation if the parent corporation is a corporation of this State or state that the proposed merger has been adopted, approved, certified, executed and acknowledged by the parent corporation in accordance with the laws under which it is organized if the parent corporation is a foreign corporation. If the surviving corporation is a foreign corporation:
8 Del. C. 1953, § 253; 56 Del. Laws, c. 50; 56 Del. Laws, c. 186, § 18; 57 Del. Laws, c. 148, § 24; 59 Del. Laws, c. 106, §§ 10, 11; 60 Del. Laws, c. 371, § 2; 63 Del. Laws, c. 25, § 13; 64 Del. Laws, c. 112, §§ 36, 37; 66 Del. Laws, c. 136, § 26; 69 Del. Laws, c. 61, §§ 7, 8; 70 Del. Laws, c. 186, § 1; 70 Del. Laws, c. 299, § 1; 70 Del. Laws, c. 349, § 10; 70 Del. Laws, c. 587, § 20; 72 Del. Laws, c. 123, § 8; 74 Del. Laws, c. 84, § 13; 77 Del. Laws, c. 253, §§ 38-40; 77 Del. Laws, c. 290, § 13; 81 Del. Laws, c. 86, §§ 16-19; 82 Del. Laws, c. 45, § 13; 82 Del. Laws, c. 256, § 14