64 Pa. Code § 303.051
The provisions of this §303.051 issued under act of the Pennsylvania Securities Act of 1972 (70 P. S. §§ 1-101-1-704); amended under sections 203(d), (o) and (p), 205, 206, 301, 303, 504, 603(a) and 609 of the Pennsylvania Securities Act of 1972 (70 P. S. §§ 1-203(d), (o) and (p), 1-205, 1-206, 1-303, 1-504, 1-603(a) and 1-609); and the Takeover Disclosure Law (70 P. S § 74).