Tender Offer Practice — The ECM Side of Control Transactions
A tender offer is buying stock, but it's an ECM deal. Mandatory tender offer rules (5% rule, 30% rule), squeeze-out requirements, premium determination logic, defense strategies (Poison Pill, White Knight). Musk-Twitter $44B deal dissected, SM Entertainment Hybe-Kakao competing offer.
30-Second Brief
Key Numbers First — The Scale of Tender Offers
30~50%
Avg. tender offer premium vs market price
95%+
Squeeze-out threshold (Korea)
25%
Mandatory tender trigger (Korea)
$44B
Musk-Twitter deal, 38% premium
A tender offer is when an acquirer publicly proposes to purchase shares from all shareholders at a specified price. In ECM, tender offers sit at the intersection of M&A and capital markets, serving as the primary tool in control transactions. The Musk-Twitter deal ($44B) and the 2023 SM Entertainment contested offer are defining cases.
Ch.2
What Is a Tender Offer — Where ECM Meets M&A
A tender offer is a public declaration by an acquirer to purchase shares from any and all shareholders at a specified price. Unlike a block trade negotiated privately with a controlling shareholder, a tender offer presents identical terms to everyone — making it a highly transparent and tightly regulated process.
Tender offers belong to ECM because large-scale share transactions occur through the capital market's price discovery function. The offer price isn't simply a negotiated figure — it's a public premium (typically 30–50% above market) that sends a signal to the entire market.
Analogy
A tender offer is like trying to buy an entire apartment complex.
Regular share purchases negotiate unit by unit. A tender offer announces publicly to all residents: "We'll buy everything at a premium." Once enough tenants agree, the remaining holdouts can be compelled out via Squeeze-out.
Three Purposes of a Tender Offer
Control Acquisition (M&A)
Securing corporate control — both hostile and friendly M&A
Going Private
MBO or PE acquisition to delist — reducing public market burdens
Buyback Tender
Large-scale buyback — faster execution than open-market purchases
Ch.3
Mandatory Tender Rules — The 5% and 25% Triggers
Korean capital markets law imposes mandatory tender offer obligations for certain share acquisition behaviors. The 25% rule is the key threshold: if an investor acquires 5% or more within one month and total holdings exceed 25%, they must conduct a mandatory public tender for the remaining shares. The ability to avoid this by spreading purchases slowly over a month has been controversial.
The mandatory offer price must be at least 100% of the 6-month volume-weighted average price. In other words, the acquirer cannot offer less than what they paid at the market's peak — a rule designed to protect minority shareholders.
Global Mandatory Tender Offer Rules
| Country | Trigger | Min. Price |
|---|---|---|
| 🇰🇷Korea | 25% + acquire 5%+ within 1 month | 6-month VWAP |
| 🇬🇧UK | 30% | 12-month highest price |
| 🇪🇺EU | 30% | 12-month highest price |
| 🇺🇸USA | None (voluntary only) | Williams Act rules |
| 🇯🇵Japan | Exceeds 1/3 | Recent highest price |
Korea 5% rule: disclose within 5 days of acquiring more than 5%. 25% rule: mandatory tender triggered when acquiring 5%+ within one month to cross 25%.
Ch.4
Tender Offer Process — D-0 to Registration
A tender offer is far more than announcing 'we will buy shares.' The acquirer must file a tender offer statement with the FSS and pass review, then accept subscriptions for a statutory period (minimum 20 business days). During this time, the lead broker tallies subscriptions and verifies whether the minimum acquisition condition is met.
The tender offer document discloses the acquirer's identity and purpose, the basis for the offer price, the financing structure, and post-acquisition plans. This single document anchors the transaction's legality and transparency.
D-0
Announcement
Disclose price, volume, and period
D+3~D+7
Regulatory Review
FSS review of the tender offer filing
D+20~D+40
Tender Period
Shareholders decide (min. 20 business days)
종료 후
Tabulation
Lead broker tallies all subscriptions
확인
Condition Check
Verify minimum acquisition threshold met
결제
Settlement
Pay tendered shareholders at offer price
완료
Registration
Transfer of control registered
D-0
Announcement
Disclose price, volume, and period
D+3~D+7
Regulatory Review
FSS review of the tender offer filing
D+20~D+40
Tender Period
Shareholders decide (min. 20 business days)
종료 후
Tabulation
Lead broker tallies all subscriptions
확인
Condition Check
Verify minimum acquisition threshold met
결제
Settlement
Pay tendered shareholders at offer price
완료
Registration
Transfer of control registered
Practice Note — Key Contents of Tender Offer Statement
- 1Identity and purpose of the acquirer
- 2Basis for offer price (premium calculation)
- 3Financing method (debt vs. equity ratio)
- 4Post-acquisition plans (maintain listing or delist)
- 5Treatment of dissenting shareholders
Ch.5
Defense Tactics — How Target Companies Fight Back
Target companies don't have to accept a hostile bid passively. Their boards can deploy various tactics to maximize shareholder value or defend control. In Korea, some defensive tactics face legal constraints, leaving fewer options than in more permissive jurisdictions like the US.
Poison Pill
When a hostile acquirer exceeds a threshold, new shares are issued cheaply to existing shareholders, diluting the acquirer's stake.
Case: CAIS Entertainment vs. hostile PE
White Knight
Find a friendly third party willing to acquire at a higher price, blocking the hostile bidder.
Case: SM Entertainment + Kakao vs HYBE
PAC-MAN Defense
Counter-tender — the target company launches a tender offer against the hostile bidder. Rare in Korea but theoretically possible.
Theoretical — rarely executed in Korea
Crown Jewel Defense
Divest or transfer core assets to a friendly party, reducing the acquisition's appeal to the hostile bidder.
Extreme defense — used under hostile attack
Ch.6
Case: Musk-Twitter $44B
The 2022 Musk-Twitter deal is one of the most dramatic tender offers in history. From delayed disclosure, attempted deal termination, court battle, to final closing at the original price — it is a textbook case showing the legal binding force of tender offers and the strictness of disclosure obligations.
2022.01
Share Accumulation Begins
Musk begins acquiring Twitter shares. Delays 5% disclosure → SEC sanction. SEC rules require filing within 5 business days; he delayed over 10 days.
2022.04.04
9.2% Stake Disclosed
Discloses 9.2% stake. Becomes Twitter's largest shareholder. Share price surges.
2022.04.14
Tender Offer Announced
$54.20/share offer announced. 38% premium. Declared as 'best and final offer.'
2022.07
Termination Attempt
Musk declares termination citing 'bot accounts.' Twitter sues in Delaware Court. Musk faces likely defeat.
2022.10.27
Acquisition Completed
$44B total, $54.20/share as originally agreed. Delisted. Twitter rebranded to X.
Lessons
- →Delayed disclosure of stake: SEC violation → $150M settlement
- →Attempted termination citing 'bot accounts' → faced likely defeat in Delaware Court
- →Ultimately closed at original price ($54.20) — confirming the binding legal force of tender offer agreements
Ch.7
Case: SM Entertainment Contested Tender Offer (2023)
The 2023 SM Entertainment contested tender offer is one of the fiercest control disputes in Korean history. The battle between SM founder Lee Soo-man, Kakao's coalition, and HYBE demonstrated how decisive the offer price is in a contested tender.
HYBE (First Bid)
Kakao (Counter Bid)
SM Entertainment Share Price — 60 Days Around Tender Offer
In a contested tender, share price converges toward the highest bid. When Kakao offered 25% more than HYBE, the market immediately sided with Kakao.
Lessons
- →In a contested bid, price is decisive — the higher offer wins
- →The incumbent controlling shareholder's (Lee Soo-man's) endorsement was the pivotal variable
- →Markets always side with the higher bidder
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