A tender offer is a public bid by a company or investor to buy shares directly from existing shareholders at a set price, usually well above the current market price, within a defined window of time. Federal securities law gives you at least 20 business days to decide, the right to withdraw shares you’ve already committed, and detailed disclosures about who the bidder is and what they plan to do with the company. If you own stock that becomes the target of one, you have real decisions to make and real protections while you make them.
How a Tender Offer Works
A bidder who wants to acquire control of a company could try buying shares quietly on the open market, but that approach is slow and the price climbs as the buying pressure shows. A tender offer skips the exchange entirely. The bidder announces publicly that it will pay a specific price per share, names a deadline, and invites every holder of that class of stock to sell.
The price almost always includes a premium over recent trading levels. Premiums of 30% to 50% are common, though the number depends on competition for the target and broader market conditions. Shareholders have no reason to sell at the current market price when the exchange is right there, so the bidder has to pay enough to motivate a decision inside a compressed window.
Publicity is the other difference. Open-market buyers can accumulate quietly until they cross the 5% ownership threshold and trigger a disclosure filing. A tender offer requires immediate SEC filings before a single share changes hands.1Office of the Law Revision Counsel. 15 U.S. Code 78n – Proxies
The Timeline You’re Working With
The process starts when the bidder files a Schedule TO (Tender Offer Statement) with the SEC and simultaneously announces the offer publicly. The Schedule TO lays out the price, the number of shares sought, the financing, and the bidder’s plans for the company after acquisition.2eCFR. 17 CFR Part 240 Subpart A – Regulation 14D Read it before you do anything else.
The target company’s board then files a Schedule 14D-9 telling shareholders whether it recommends accepting, rejecting, or taking no position. That recommendation carries weight, especially with institutional investors, and a negative one can sink an otherwise attractive bid.3GovInfo. 17 CFR 240.14d-9 – Recommendation or Solicitation by the Subject Company
The offer must stay open for at least 20 business days from the date it’s first published or sent to shareholders. If the bidder changes the price, raises or lowers the number of shares sought, or makes any other material change, the clock resets for an additional ten business days.4GovInfo. 17 CFR 240.14e-1 – Unlawful Tender Offer Practices That rule stops a bidder from dropping a last-minute sweetener designed to stampede shareholders.
Throughout the open window you can withdraw any shares you’ve already tendered.5eCFR. 17 CFR 240.14d-7 – Additional Withdrawal Rights If a competing bid appears or the board changes its recommendation, you can pull your shares back and reconsider. Tendering early doesn’t lock you in.
Most offers include a minimum tender condition, often just above 50% of outstanding shares, so the bidder gains voting control. If too few shareholders tender, the bidder can extend the deadline or walk away. If more shares are tendered than the bidder wants to buy, the bidder cannot pick and choose holders. Shares are accepted proportionally from everyone who tendered, a process called proration.6eCFR. 17 CFR Part 240 Subpart A – Regulation 14D – Section 240.14d-8 Tender 1,000 shares into an offer that’s oversubscribed two-to-one and the bidder buys about 500 of yours, returning the rest.
Friendly, Hostile, and Self-Tender Offers
The relationship between the bidder and the target board shapes how the offer plays out.
A friendly tender offer comes after both boards have negotiated privately and agreed on terms. The target board files a 14D-9 recommending acceptance, and shareholders see what amounts to a done deal awaiting their participation. Completion rates are high.
A hostile tender offer goes directly to shareholders after the target board has refused to negotiate or approve the deal. The bidder relies on the premium to persuade a majority of shareholders to overrule management. These contests often involve dueling public statements, litigation, and defensive maneuvers by the target board, including shareholder rights plans (poison pills) that would dilute a hostile bidder’s stake, searches for a friendlier “white knight” buyer, or self-tender buybacks that shrink the pool of available shares.
A self-tender, or issuer tender offer, is a company buying back its own shares from existing holders. The usual motivation is capital management: fewer outstanding shares means higher earnings per share and a tax-efficient way to return cash. Companies also use self-tenders defensively to keep shares out of a hostile bidder’s hands.
How to Respond if You Own the Shares
How you tender depends on how your shares are held.
- If your shares sit in a brokerage account (street name), your broker will notify you of the offer and send the offering documents. You submit tender instructions through the broker, usually by online form or phone. Watch the broker’s internal deadline, which often falls a day or two before the official expiration to allow processing time.
- If you hold physical stock certificates, you deliver them along with a signed letter of transmittal to the depositary named in the offer documents. The transfer agent will require a Medallion Signature Guarantee on the transmittal paperwork, which you can get from a bank, credit union, or brokerage firm where you’re an existing customer. Not every institution participates in Medallion programs, so start early.7Investor.gov. Medallion Signature Guarantees – Preventing the Unauthorized Transfer of Securities
Before you tender, compare the offer price to the current market price and to recent analyst valuations. Check the board’s Schedule 14D-9. If the board recommends rejection, read why; boards sometimes reject offers they view as too low, and a higher bid may follow. And remember the withdrawal right: committing early costs you nothing.
What Happens if You Don’t Tender
If the bidder collects enough shares to clear the threshold for a short-form merger (90% of outstanding shares in most states), it can force the remaining shareholders to sell at the tender offer price without a shareholder vote. This back-end squeeze-out is routine in successful tender offers, so holdouts generally end up selling at the same price anyway, just on a delayed timeline.
If the bidder falls short of the short-form threshold but holds a majority, it can run a longer-form merger that requires a shareholder vote. The bidder already controls enough shares to win that vote, so the result is the same: minority shareholders get cashed out.
Shareholders who believe the offer price undervalues their shares can exercise appraisal rights in most states, petitioning a court to independently determine fair value. Appraisal litigation is expensive and slow, and courts have sometimes pegged fair value to the merger price itself. For most individual shareholders the cost outweighs the potential upside unless a large institutional investor is already leading the challenge.
Tax Consequences of Tendering
Tendering shares for cash is treated like any other sale. Your gain or loss is the difference between the tender offer price and your cost basis, meaning what you originally paid, adjusted for splits and reinvested dividends.8Internal Revenue Service. Topic No. 409 – Capital Gains and Losses
Shares held more than one year produce long-term capital gains, taxed federally at 0%, 15%, or 20% depending on your total taxable income. Shares held one year or less produce short-term gains, taxed at your ordinary income rate, which can run as high as 37%. For 2026, the 20% long-term rate applies to single filers with taxable income above $545,500 and joint filers above $613,700.
Stock-for-stock tender offers, where the bidder pays in its own shares instead of cash, can sometimes qualify as a tax-deferred reorganization under the Internal Revenue Code. The IRS requires continuity of business enterprise and continuity of interest, meaning the combined company must keep operating a real business and the original shareholders must retain a meaningful equity stake.9eCFR. 26 CFR 1.368-1 – Purpose and Scope of Exception of Reorganization Exchanges If the exchange qualifies, no tax is due until you sell the new shares. Mixed offers (part cash, part stock) are partially taxable, with the cash portion triggering a gain and the stock portion potentially deferred.
Mini-Tender Offers Are a Different Animal
Not every tender offer carries the protections above. A mini-tender offer targets less than 5% of a company’s shares and sits outside the filing, disclosure, and procedural requirements of standard tender offer rules.10U.S. Securities and Exchange Commission. Mini-Tender Offers – Tips for Investors Only basic anti-fraud rules and minimum time periods apply.
Many mini-tender offers are priced below the current market value of the stock. Bidders count on shareholders assuming the offer carries the usual premium. If you don’t check the market price first, you could sell for less than you’d get on the exchange.11U.S. Securities and Exchange Commission. Commission Guidance on Mini-Tender Offers and Limited Partnership Tender Offers Mini-tenders also lack withdrawal rights, so once you tender you generally cannot change your mind. There’s no proration requirement either, which lets bidders accept on a first-come basis and creates artificial pressure to respond fast. Always compare the offer price to the market price before acting.
Shareholder Protections Under the Williams Act
Congress passed the Williams Act in 1968, amending the Securities Exchange Act of 1934, to close a gap that let bidders launch cash tender offers with minimal disclosure and almost no time for shareholders to think.1Office of the Law Revision Counsel. 15 U.S. Code 78n – Proxies The Act and the SEC rules built on top of it give you several concrete protections:
- Equal treatment. The offer must be open to every holder of the targeted class, and the highest price paid to any shareholder must be paid to all shareholders who tender.12eCFR. 17 CFR 240.14d-10 – Equal Treatment of Security Holders
- Withdrawal rights. You can pull tendered shares back any time the offer is open.5eCFR. 17 CFR 240.14d-7 – Additional Withdrawal Rights
- Minimum offer period. At least 20 business days, with an additional ten after any material change.4GovInfo. 17 CFR 240.14e-1 – Unlawful Tender Offer Practices
- Proration. Oversubscribed offers are accepted proportionally from all tendering holders, not first-come, first-served.6eCFR. 17 CFR Part 240 Subpart A – Regulation 14D – Section 240.14d-8
- Full disclosure. The bidder must file a Schedule TO covering financing, plans for the target, and any agreements with target management.13eCFR. 17 CFR 240.14d-100 – Schedule TO
Executive compensation gets its own scrutiny. When a tender offer could trigger golden parachute payments to target executives, the board must disclose the dollar value in its Schedule 14D-9, including cash severance, accelerated stock awards, pension enhancements, and tax gross-ups.14Securities and Exchange Commission. Shareholder Approval of Executive Compensation and Golden Parachute Compensation Those numbers matter because large exit packages can color a board’s recommendation. Read the filings with that in mind.