What Is a Tender Offer?
A tender offer is a public bid made directly to the shareholders of a publicly traded company to purchase some or all of their shares at a specified price — typically at a premium above the current market price — within a defined acceptance period, bypassing the company’s board of directors and management to deal directly with the shareholders who actually own the company’s equity.
The tender offer is the primary mechanism for hostile corporate acquisitions — transactions in which an acquirer seeks to take control of a target company over the opposition or without the cooperation of the target’s incumbent management — and is also used extensively in friendly acquisitions, leveraged buyouts, and issuer repurchases of the company’s own shares.
Because the tender offer allows an acquirer to go around management and appeal directly to shareholders, it is the most powerful corporate control transaction mechanism available in the United States markets — and it is comprehensively regulated by the Williams Act of 1968, which amended the Securities Exchange Act of 1934 to add Sections 13(d) and 14(d) through 14(f) and created the disclosure, timing, and shareholder protection framework that governs every tender offer in the modern regulatory environment.
The tender offer, its regulatory framework, the Williams Act requirements, and its distinction from open market repurchases are directly tested on the Series 7 examination.
The Williams Act of 1968 — The Regulatory Foundation
Before 1968 no federal law regulated tender offers — acquirers could launch surprise bids for target company shares with minimal disclosure, leaving shareholders with little information and almost no time to evaluate whether to accept or reject the offer. The Congress addressed this investor protection vacuum through the Williams Act — enacted July 29, 1968 and sponsored by Senator Harrison Williams of New Jersey — which added Sections 13(d), 13(g), 14(d), 14(e), and 14(f) to the Securities Exchange Act of 1934.
The Williams Act was deliberately designed to strike a neutral balance between the interests of acquiring companies and target shareholders — Congress explicitly did not want the legislation to tilt the playing field against takeovers as a matter of policy, recognising that the market for corporate control serves an important efficiency function by disciplining underperforming management and reallocating corporate assets to higher-valued uses. Instead the Williams Act sought to ensure that shareholders had the information and time necessary to make informed decisions about whether to tender their shares — without the government substituting its judgment for the shareholders’ own assessment of whether the offer price was adequate.
The Williams Act achieves this neutral balance through three core mechanisms — mandatory disclosure of the acquirer’s identity and intentions, minimum offering periods that give shareholders sufficient time to evaluate the offer and seek alternative transactions, and specific rights for tendering shareholders including the right to withdraw tendered shares and the right to receive any price increase paid to other shareholders.
Schedule TO — The Mandatory Disclosure Filing
Any acquirer whose tender offer would result in ownership of more than five percent of the target company’s shares must file a Schedule TO — the Tender Offer Statement — with the SEC on the day the offer commences. The Schedule TO is a comprehensive public disclosure document that provides shareholders with all material information needed to evaluate the offer and decide whether to tender.
The Schedule TO must disclose the identity and background of the bidder — including the names of all persons making the offer, their business backgrounds, and any prior criminal convictions or securities law violations. It must disclose the source of financing — where the money to purchase the shares is coming from, including the terms of any debt financing arrangements and the identities of the financial institutions providing acquisition financing. It must disclose the terms of the offer — the price per share, the number of shares being sought, any conditions to the offer, the expiration date, and the procedures for tendering and withdrawing shares. It must disclose the purpose of the transaction — whether the acquirer intends to acquire the entire company, take it private, sell off assets, replace management, or pursue some other post-acquisition strategy that shareholders should understand before deciding whether to tender. It must disclose any prior dealings between the acquirer and the target — including any prior negotiations, previous share acquisitions, or other relationships.
The Schedule TO is filed simultaneously with the commencement of the offer — not before the offer begins — ensuring that shareholders receive the required disclosures at the same time they are first notified that the offer exists. The SEC has ten business days after the Schedule TO is filed to review it and request additional disclosure if material information appears to be omitted or inadequate.
Schedule 14D-9 — The Target’s Response
Within ten business days of the commencement of a third-party tender offer, the target company’s board of directors must file a Schedule 14D-9 — the Solicitation or Recommendation Statement — disclosing whether the board recommends that shareholders accept or reject the offer, makes no recommendation, or is unable to take a position. The Schedule 14D-9 must disclose the reasons for the board’s recommendation or non-recommendation, any transactions in the target’s shares by the company’s directors and officers in the preceding sixty days, and any material agreements between the target and its directors or officers that might influence the board’s recommendation — such as golden parachute arrangements that are triggered by a change of control.
The target board’s Schedule 14D-9 is the primary vehicle through which incumbent management communicates its view of the offer’s adequacy to shareholders — arguing that the offer price undervalues the company, that superior alternatives are available, that the acquirer’s financing is uncertain, or that the business combination is not in shareholders’ interests. In a friendly transaction, the target board recommends acceptance — in a hostile transaction, the target board typically recommends rejection and may simultaneously pursue defensive measures and alternative transactions.
The Minimum Offering Period — The Twenty Business Day Rule
Regulation 14E, Rule 14e-1 requires that every tender offer remain open for at least twenty business days from the date it is first published or sent to shareholders — the minimum offering period that gives shareholders sufficient time to evaluate the offer, seek professional advice, compare the offer to the market price and any alternative transactions under negotiation, and decide whether to tender their shares.
The twenty business day minimum period is not negotiable — a bidder cannot shorten the offering period below twenty business days even if the target’s board has recommended acceptance and shareholders want to close the transaction more quickly. The minimum period ensures that shareholders who might otherwise react impulsively to an attractive premium or who need time to gather information have an adequate window for deliberate decision-making.
If the bidder increases the offer price or the percentage of shares being sought at any point during the offering period, the offer must remain open for at least ten additional business days following the announcement of the change — ensuring that shareholders who tendered at the original price and might want to reconsider in light of changed terms have a meaningful opportunity to do so.
Shareholder Rights — Withdrawal, Pro-Ration, and Best Price
The Williams Act framework establishes three specific rights for shareholders who tender their shares in a tender offer — rights that protect shareholders from pressure tactics and ensure they are treated fairly relative to other tendering shareholders.
The withdrawal right allows shareholders who have tendered their shares to change their minds and withdraw those shares from the offer at any time before the expiration of the offer. This withdrawal right prevents the acquirer from using a countdown clock to pressure shareholders into tendering before the shareholders have made a fully informed decision — shareholders can tender and observe how the offer develops, then withdraw if they decide the offer is inadequate or if a superior offer emerges, without losing the option of ultimately accepting the original offer if no better alternative materialises.
The pro-ration right protects shareholders when the acquirer seeks fewer than all outstanding shares. If the tender offer is for less than all shares and more shares are tendered than the acquirer seeks, the acquirer must purchase shares from tendering shareholders on a proportional basis — if forty percent more shares are tendered than sought, the acquirer purchases forty percent fewer shares from each tendering shareholder than they tendered, returning the unsought portion. This prevents the acquirer from selectively choosing which shareholders to purchase from and ensures that all tendering shareholders participate proportionally in the offer.
The best price rule under Rule 14d-10 requires that the acquirer pay every shareholder the highest price paid to any shareholder during the tender offer period — if the acquirer increases the offer price during the offer period, every shareholder who tendered at the original lower price must receive the higher price. This prevents the acquirer from making side payments to favoured shareholders while paying others the stated offer price.
Friendly Versus Hostile Tender Offers
Tender offers are classified as friendly or hostile based on whether the target company’s board of directors supports or opposes the offer — a distinction with profound practical implications for the transaction’s complexity, likelihood of completion, and the defensive measures available to the target.
A friendly tender offer is one in which the target’s board has negotiated the transaction with the acquirer in advance, agreed on the offer terms, and recommends that shareholders accept — filing a supportive Schedule 14D-9 and cooperating fully with the acquirer’s due diligence and regulatory approval processes. Most large acquisitions in the modern market are structured as friendly transactions in which the board negotiates the best possible price and then recommends acceptance, because the acquirer gains access to private due diligence information and can secure regulatory approvals more efficiently when management cooperates.
A hostile tender offer is one in which the acquirer bypasses the target board — either because preliminary negotiations with management failed to produce an agreed transaction, or because the acquirer made a direct approach to shareholders without any prior negotiation — and the target board opposes the offer. Hostile tender offers are less common in the contemporary market than in the takeover waves of the 1980s because of the proliferation of defensive measures that make hostile acquisitions extremely difficult and expensive to complete.
The most effective anti-takeover defence is the poison pill — formally called a shareholder rights plan — under which the target’s board grants existing shareholders the right to purchase additional shares at a substantial discount if any single acquirer accumulates more than a specified threshold of the target’s shares — typically fifteen to twenty percent — without board approval. The poison pill makes hostile acquisition prohibitively dilutive and expensive, effectively forcing any potential acquirer to negotiate with the board rather than going directly to shareholders. Poison pills are adopted by the board without shareholder approval and can be implemented very quickly — making them the most commonly deployed anti-takeover measure in the modern corporate governance environment.
The Issuer Self-Tender — The Repurchase Application
While the third-party tender offer in an acquisition context is the most discussed application, tender offers are also used extensively by companies repurchasing their own shares — the issuer self-tender. An issuer self-tender allows a company to repurchase a specific number of its own shares at a fixed price within a defined acceptance period, governed by Exchange Act Rule 13e-4 rather than Regulation 14D.
Rule 13e-4 requires the company to file a Schedule TO with the SEC disclosing all material terms of the repurchase offer, provide the offer document to all shareholders of the class of shares being repurchased, keep the offer open for at least twenty business days, and comply with the same best price and pro-ration requirements that apply to third-party tender offers. The issuer self-tender is one of the three primary methods of share repurchase alongside open market repurchases and accelerated share repurchases — it is particularly useful when the company wants to execute a large repurchase quickly and with certainty of completion at a defined price, rather than gradually through open market purchases over an extended period.
The Tender Offer and Regulation M — Anti-Manipulation During Distribution
Regulation M Rule 105 — which prohibits short selling of a security during the five business days before the pricing of a public offering and then purchasing shares in that offering — applies in the context of tender offers in a specific way. An investor who acquires shares through a tender offer at a discount to the prevailing market price and then sells those shares at market prices in effect in a distribution — a situation that can arise in exchange offers or certain restructuring transactions — may trigger Regulation M concerns depending on the specific transaction structure and the timing of any short selling in the relevant securities.
Commencement — The Moment the Offer Begins
A bidder has commenced its tender offer at 12:01 a.m. on the date when the bidder has first published, sent or given the means to tender to security holders — so commencement is fixed to a date and an hour rather than to the moment a decision is taken or an intention announced. The means to tender is defined for this purpose as the transmittal form, or a statement regarding how the transmittal form may be obtained.
Because the minimum offering period is measured in business days rather than calendar days, the span it occupies on a calendar is always the longer figure. Twenty business days beginning on a Monday, with no holiday falling inside the span, run as five days in the first week, five in the second, five in the third and five in the fourth — and three weekends, six calendar days in all, fall between them. Twenty business days therefore occupy twenty-six calendar days: the twentieth business day is the twenty-sixth calendar day of the span. Each public holiday inside the span pushes that end date one further calendar day out.
Changes to the Terms — What Runs a Fresh Ten Business Day Period
A change that reduces what is on offer runs the same ten-business-day period as a change that increases it. No person making a tender offer may decrease the percentage of the class of securities being sought, or decrease the consideration offered, unless the offer remains open for at least ten business days from the date that notice of the decrease is first published or sent or given to security holders. The symmetry is deliberate: a shareholder who tendered on one set of terms needs the same window to reconsider whether the terms moved in their favour or against them.
The same paragraph reaches a third variable that has nothing to do with what shareholders receive. A change in the dealer’s soliciting fee to be given in the tender offer — the compensation paid to the brokers who solicit tenders — also requires the offer to remain open for at least ten business days from notice of the change, whether the fee is raised or lowered. A bidder adjusting the economics of its solicitation effort partway through an offer is therefore subject to the same timing consequence as a bidder adjusting its price.
One movement in the bidder’s direction is carved out of that machinery. The acceptance for payment of an additional amount of securities not exceeding two percent of the class of securities that is the subject of the tender offer is not deemed to be an increase, so it does not start a fresh ten business days. The two percent is measured against the class, not against the number of shares the offer sought — a distinction that changes the figure substantially. A bidder offering for 12,000,000 shares of a class of 60,000,000 may accept for payment up to 1,200,000 shares beyond the 12,000,000 it sought, because two percent of 60,000,000 is 1,200,000. Two percent of the 12,000,000 sought would have been only 240,000, a fifth of the true allowance.
Measuring the Class and Counting the Bidder
Every percentage in this framework is measured against a denominator the statute defines, and it is not the number of shares the company has issued. In determining any percentage of a class of securities, the class is deemed to consist of the amount of the outstanding securities of that class, exclusive of any securities of the class held by or for the account of the issuer or a subsidiary of the issuer. Excluding the company’s own holdings makes the denominator smaller and every holding in the class proportionally larger. A company with 50,000,000 shares issued, of which 6,000,000 are held for its own account, has a class of 44,000,000 for this purpose — and an investor holding 2,250,000 shares holds 4.5 percent of the shares issued but a little over five percent of the class as the statute computes it. The same position sits below the threshold on one measure and above it on the measure that governs.
The person whose ownership is measured can also be more than one party. Where two or more persons act as a partnership, limited partnership, syndicate or other group for the purpose of acquiring, holding or disposing of securities of an issuer, that syndicate or group is deemed a single person for the purposes of the subsection. Three funds that separately hold 900,000, 800,000 and 700,000 shares of a class of 40,000,000 hold 2.25 percent, two percent and 1.75 percent respectively, and no one of them is near the threshold — but acting as a group for that purpose they are one person holding 2,400,000 shares, six percent of the class. The arrangement among them, not the size of any single holding, is what makes the subsection measure their ownership as one person’s.
The subsection also names the securities it covers. It reaches a tender offer for any class of equity security registered under Section 12 of the Exchange Act, any equity security of an insurance company that would have been required to be so registered but for the exemption in Section 12(g)(2)(G), and any equity security issued by a closed-end investment company registered under the Investment Company Act of 1940.
After the Scheduled Expiration — Extension, Notice and Settlement
An offer that ends, however it ends, has to be settled up. A person making a tender offer may not fail to pay the consideration offered, or to return the securities deposited by or on behalf of security holders, promptly after the termination or withdrawal of the tender offer. The duty is expressed as the one obligation with two outcomes: shares the bidder takes up are paid for, and shares it does not take up go back to the holder who deposited them. A bidder that walks away from an offer therefore cannot leave the tendered shares immobilised while it decides what to do next.
An offer that is extended rather than ended must be extended publicly, and the announcement carries a specified piece of information. A bidder may not extend the length of a tender offer without issuing a notice of the extension by press release or other public announcement, and that notice must include disclosure of the approximate number of securities deposited to date. The required figure is the one a shareholder most needs in order to judge the extension: the running count of tenders tells the market whether the offer is being taken up or is struggling, which is precisely the information that bears on whether to tender into the extended period.
The deadline for that notice is set as the earlier of two moments, so whichever arrives first governs. The notice must be issued no later than the earlier of 9:00 a.m. Eastern time on the next business day after the scheduled expiration date of the offer, or — where the class of securities subject to the offer is registered on one or more national securities exchanges — the first opening of any one of those exchanges on that next business day. Where an exchange’s first opening on that day falls after nine o’clock, the nine o’clock limb is the earlier of the two and fixes the deadline; where an opening falls before nine o’clock, that opening fixes it. The construction means the market cannot open on the shares with the extension still unannounced.
Section 14(e) — The Antifraud Provision Over the Whole Contest
The antifraud provision governing tender offers reaches conduct as well as words. Section 14(e) makes it unlawful for any person to engage in any fraudulent, deceptive or manipulative act or practice in connection with any tender offer or request or invitation for tenders — a limb that stands beside, and independently of, the provision’s prohibition on untrue statements and material omissions. A course of conduct can therefore fall inside the section although nothing untrue was ever said, which is what allows the section to reach schemes whose deception lies in their structure rather than in any document.
The section also reaches both sides of a contested offer. Its prohibition applies in connection with any tender offer or request or invitation for tenders, and equally in connection with any solicitation of security holders in opposition to or in favor of any such offer, request or invitation. A target board’s campaign urging shareholders to reject a bid, and a dissident’s campaign urging them to accept one, sit under the same antifraud standard as the bidder’s own offering documents. The provision regulates the argument about the offer, not only the offer.
The specific timing and trading rules that govern tender offers are built on that antifraud foundation rather than standing apart from it. Section 14(e) directs the Commission to define, and to prescribe means reasonably designed to prevent, the acts and practices that are fraudulent, deceptive or manipulative — and the rule setting the minimum offering period opens with the statement that it operates as a means reasonably designed to prevent such acts or practices within the meaning of Section 14(e), and the rule on trading on tender offer information is written in the same terms. A bidder that holds its offer open for less than the minimum period is accordingly in breach of an antifraud prophylactic, not of a procedural formality, and the characterisation follows from how the rule is drafted.
Trading on Tender Offer Information — Rule 14e-3
The rule governing trading on tender offer information begins to operate before there is an offer to speak of. Once any person has taken a substantial step or steps to commence a tender offer, or has commenced one, that person is the offering person for the rule’s purposes and the prohibition is live. The trigger is a step toward the offer rather than the offer’s commencement, so the rule can bind at a stage when nothing has been published, no transmittal form exists and the market knows nothing — which is exactly the stage at which information about a coming bid is most valuable and most likely to move.
What the rule then asks of any other person is a question about possession and about source. It is unlawful for any other person who is in possession of material information relating to the tender offer, which that person knows or has reason to know is nonpublic, and which that person knows or has reason to know has been acquired directly or indirectly from the offering person, from the issuer of the securities sought or to be sought, or from any officer, director, partner or employee or any other person acting on behalf of the offering person or that issuer, to purchase or sell those securities. Both the nonpublic character of the information and its origin in one of those three channels are elements, and each is satisfied by actual knowledge or by having reason to know.
The prohibition is lifted by disclosure, and the rule specifies what has to be disclosed. A purchase or sale is outside paragraph (a) where, within a reasonable time prior to that purchase or sale, the information and its source are publicly disclosed by press release or otherwise. Disclosing the information alone does not satisfy the condition: the source has to be disclosed with it, and the disclosure has to precede the trade by a reasonable time rather than accompany it.
Section 14(f) — A New Board Majority Seated Without a Meeting
A negotiated offer frequently ends with the acquirer’s nominees taking seats on the target’s board without any shareholder vote, and the statute attaches a disclosure obligation to that step. The provision is triggered where, pursuant to any arrangement or understanding with the person or persons acquiring securities in a transaction subject to the tender offer subsection or to the beneficial ownership reporting subsection, any persons are to be elected or designated as directors of the issuer otherwise than at a meeting of security holders, and the persons so elected or designated will constitute a majority of the directors. Both conditions matter: the seating must rest on an arrangement with the acquirer, and the incoming group must amount to a majority rather than to a minority of board seats.
The obligation that follows falls on the issuer rather than on the acquirer. The issuer files the required information with the Commission and transmits it to all holders of record of securities of the issuer who would be entitled to vote at a meeting for the election of directors. The audience is defined by voting entitlement in a director election, so it is the holders who are being bypassed, rather than the holders who tendered, who must receive the information.
The content and the timing of that filing are both measured against the alternative the shareholders are not getting. The information must be substantially equivalent to the information that would have been required to be transmitted under the proxy and information statement provisions if those persons were nominees for election as directors at a meeting of security holders — and it is due prior to the time any such person takes office as a director. The shareholders are given, before the fact, what a contested or uncontested election would have put in front of them, even though no election is to be held.
Examination Relevance and Key Takeaways
The tender offer is tested on the Series 7 examination in the context of corporate acquisitions, the Williams Act regulatory framework, the Schedule TO filing requirements, shareholder rights, and the distinction between friendly and hostile transactions.
The key points to retain are these.
A tender offer is a public bid made directly to shareholders to purchase some or all of their shares at a specified premium price during a defined acceptance period — bypassing board management to deal directly with shareholders. The Williams Act of 1968 — amending the Securities Exchange Act of 1934 to add Sections 13(d) and 14(d) through 14(f) — is the foundational legislation governing all third-party tender offers for more than five percent of a company’s shares. Any acquirer whose offer would result in ownership exceeding five percent must file Schedule TO with the SEC on the day the offer commences — disclosing identity, financing source, offer terms, purpose, and prior dealings with the target.
The target board must file Schedule 14D-9 within ten business days — recommending acceptance, rejection, or expressing no recommendation — with reasons and disclosure of any management conflicts. Regulation 14E Rule 14e-1 requires the offer remain open for a minimum of twenty business days — the mandatory minimum offering period that cannot be shortened. Any price increase requires the offer to remain open for at least ten additional business days. The three core shareholder rights are the withdrawal right — tendering shareholders may withdraw at any time before expiration; the pro-ration right — when more shares are tendered than sought, each tendering shareholder receives proportional participation; and the best price rule under Rule 14d-10 — every shareholder receives the highest price paid to any shareholder during the offer period. Friendly tender offers have board support and Schedule 14D-9 recommendation to accept. Hostile tender offers face board opposition and defensive measures — the poison pill or shareholder rights plan is the most effective defence, making hostile acquisition dilutive and forcing negotiation with the board. Issuer self-tenders for share repurchase are governed by Rule 13e-4 with the same twenty business day minimum and best price requirements.


