M&A Deal Flow: Mega-Deals and Antitrust Reviews — 2026-09-02

Top developments

UK Takeover Activity Surpasses $100 Billion

The British takeover market crossed the $100 billion threshold in 2026, fueled by a significant surge in deal announcements in late August and early September. This milestone highlights the resilience of UK M&A activity despite broader global volatility. The acceleration suggests that despite regulatory scrutiny, corporate appetite for consolidation in the UK remains robust, with several large-scale bids coming to the forefront this week.

KKR Settles DOJ Merger Filing Lawsuit for $250 Million

Private equity giant KKR & Co. agreed to pay $250 million to resolve a civil antitrust case filed by the US Justice Department. The DOJ alleged that KKR intentionally withheld documents from government-required merger reviews on more than a dozen deals. This settlement represents the largest-ever penalty for filing violations in merger review history, signaling a stricter enforcement stance by the DOJ on procedural compliance during antitrust reviews.

Itochu Launches Tender Offer for Dentsu Soken

Japanese trading house Itochu announced a tender offer (TOB) for Dentsu Soken, a subsidiary of Dentsu Group, with plans to take the company private. The acquisition is valued at over ¥200 billion (approx. $1.3 billion+), aiming to strengthen Itochu’s digital business capabilities. Dentsu Soken’s board has resolved to recommend shareholders accept the offer, marking a significant cross-sector consolidation between trading and advertising/consulting services in Japan.

Tsumura Completes Acquisition of Yomeishu Seizo

Tsumura, a major Japanese pharmaceutical company specializing in Kampo medicine, completed its acquisition of Yomeishu Seizo on September 1, 2026. The deal was valued at ¥6.8 billion (approx. $45 million). The acquisition integrates the manufacturer of the long-running "Yomeishu" tonic into Tsumura’s portfolio, leveraging Tsumura’s distribution network for medical Kampo preparations to expand Yomeishu’s market reach.

Local view

In Japan, the M&A landscape is seeing mixed reactions to ongoing tender offers. While Dentsu Soken’s board recommended Itochu’s offer, consumer electronics maker Twinbird publicly opposed the tender offer proposed by Japannet Holdings on August 31. Twinbird cited risks including potential cessation of transactions with electronics retailers as key concerns, highlighting the friction that can arise in hostile or contested buyouts in the Japanese market.

Additionally, SBI Holdings initiated a tender offer for BASE Inc., a fintech firm listed on the Tokyo Stock Exchange Growth Market, on August 31. BASE expressed support for the offer, which aims to make it an equity-method affiliate, reflecting continued interest in fintech consolidation among major financial groups.

Context & numbers

• Global Deal Value: Global M&A value is projected to reach approximately $4 trillion in 2026, up 13% from 2025, according to PwC. This would be the second-highest level ever recorded, trailing only the pandemic-driven spike of 2021.
• US Deal Volume: US merger and acquisition deal value reached $1.11 trillion in the first half of 2026, underscoring the continued importance of tax planning and strategic structuring in large-scale transactions.
• Antitrust Enforcement: The DOJ and FTC secured three consent settlements in Q1 2026, indicating a sustained revival of negotiated remedies. The DOJ also announced a return to targeted "quick look" Second Request investigations in July 2026 to expedite consideration.

On the radar

• EU Merger Guidelines Review: The European Commission is currently conducting the broadest review of merger guidelines in two decades, with new draft guidelines published in April 2026. Stakeholders are closely watching for final implementations that could impact cross-border deals.
• FTC Procedural Changes: The FTC has moved to recalibrate how it litigates merger challenges, specifically regarding Section 13(b) preliminary injunctions, aiming to give merging parties earlier access to judicial review. This shift may alter negotiation dynamics for pending US deals.