17 C.F.R. § 240.14d-2
(b) Pre-commencement communications. A communication by the bidder will not be deemed to constitute commencement of a tender offer if:
Instructions to paragraph (b)(2): 1. The box on the front of Schedule TO indicating that the filing contains pre-commencement communications must be checked. 2. Any communications made in connection with an exchange offer registered under the Securities Act of 1933 need only be filed under § 230.425 of this chapter and will be deemed filed under this section. 3. Each pre-commencement written communication must include a prominent legend in clear, plain language advising security holders to read the tender offer statement when it is available because it contains important information. The legend also must advise investors that they can get the tender offer statement and other filed documents for free at the Commission's web site and explain which documents are free from the offeror. 4. See §§ 230.135, 230.165 and 230.166 of this chapter for pre-commencement communications made in connection with registered exchange offers. 5. “Public announcement” is any oral or written communication by the bidder, or any person authorized to act on the bidder's behalf, that is reasonably designed to, or has the effect of, informing the public or security holders in general about the tender offer.
[64 FR 61459, Nov. 10, 1999]