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M&A and Corporate Control: Takeovers, Bids and Defenses
A proposed acquisition has several audiences: the board, shareholders, lenders and regulators. Each can have a different reason to accept the price or stop the transaction. Start by identifying whose agreement the deal actually needs.
These guides connect tender offers, proxy contests and takeover defenses to specific disputes. Use the company profiles to examine a control structure before assuming a bid can change it.
Start here
Understand the route to control
Follow the bid from the offer to the shareholder decision.
What Is a Hostile Takeover? A Founder's Guide to Bids and Defenses
How modern raiders move, which defenses boards can use, and what the first 60 days can look like in a clearly labeled worked hypothetical.
Paramount’s WBD Bid: How a Rejected Offer Becomes a Board Fight
Follow Paramount’s WBD bid through tender offers, proxy threats and revised terms. See how a bidder challenges the board’s preferred transaction.
Toyota Industries Buyout: How Elliott Made the Toyoda Family Bid Again
Follow the Toyota Industries buyout through Elliott’s stake, the tender threshold and the higher offer. See how closing conditions create negotiating power.
Next steps
Find the constraint on the deal
Examine shareholder agreements, takeover defenses and restrictions after closing.
Universal Music’s Takeover Defense Was a Shareholders’ Agreement
Examine Universal Music’s shareholder agreement, concert-party rules and takeover defenses to see who must agree to a bid and why price alone may not decide it.
How the Aoki Family Won a Poison Pill Vote It Had Already Paid For
Kusuri no Aoki's takeover defense passed with 55.5% in February 2026. The control it protects was bought in 2020 with options the company valued at ¥691 and sold for ¥5, then delivered by a buyback and a market-tier downgrade.
What Is a Hold-Separate Order? You Bought the Business. You Cannot Run It Yet.
What can an owner do under a hold-separate order? The CalPortland case explains separate management, spending commitments and limits on integration.
Tools and reference
Terms to know
- Tender Offer
A tender offer is a public bid to buy shares directly from holders, going around the board. It must stay open for at least 20 business days.
- Proxy Fight
A proxy fight is a campaign to win board seats by shareholder vote. Since 2022 both sides' nominees appear together on one universal proxy card.
- Poison Pill
A poison pill lets every other shareholder buy discounted stock once a hostile bidder crosses a set threshold, making the takeover too expensive.
- Appraisal Rights
Appraisal rights let a dissenting shareholder ask the Delaware Court of Chancery to set the fair value of their shares instead of taking the deal price.
Company control profiles
- Toyota Motor Corporation
Toyota's only 5% shareholder was the company it grew out of. In 2026 Toyota paid 3.65 trillion yen to buy that 9.17% block back, and is cancelling it.
- United States Steel Corporation
Nippon Steel owns every common share of U.S. Steel. The U.S. government owns one share of Class G preferred stock and can block what matters most.
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