Which of the following terms describes an offer to purchase some or all shareholders '...

Step by Step Explanation:

Tender Offer Definition: A tender offer is an offer to purchase a certain number of shares from shareholders, typically at a price above the current market value. This is often part of mergers, acquisitions, or corporate takeovers.

Stock Split: A stock split increases the number of shares but decreases the price per share without affecting the total value of an investor ' s holdings.

Redemption: Redemption refers to the repayment of a bond or preferred stock at maturity or at a predetermined date.

Class Action: A class action is a lawsuit filed by a group of people with similar grievances.

SEC Rule 14e on tender offers: SEC Tender Offers.