Top mergers and acquisitions in United States in September 2026
Every verified merger and acquisition involving United States in this period, ranked by disclosed value. Updated every morning.
We tracked 24 deals involving United States in September 2026, 22 of them with a disclosed value, worth $151.3bn in total. The largest was Union Pacific's $85bn deal for Norfolk Southern, ahead of Merck KGaA and Bio-Techne at $11.3bn.
Top mergers and acquisitions in United States in September 2026
- 122 SeptUnion Pacific → Norfolk SouthernRegulator keeps Union Pacific-Norfolk Southern review on trackIndustrials / RailIn review$85bn
- 223 SeptMerck KGaA → Bio-TechneBio-Techne shareholders back $11.3bn sale to Merck KGaAHealthcare / Life-science toolsIn review$11.3bn
- 328 SeptAMD → World LabsAMD agrees $8.2bn all-stock deal for Fei-Fei Li's World LabsTechnology / AIAgreed$8.2bn
- 49 SeptIndependence Realty Trust → CenterspaceIRT and Centerspace agree $8.1bn apartment REIT mergerReal estate / REITAgreed$8.1bn
- 514 SeptSequence Holdings and DFO Management → The Baldwin Insurance GroupDell family office and Sequence agree $7.7bn take-private of BaldwinFinancials / Insurance brokerageAgreed$7.7bn
- 629 SeptLong Lake → American Express Global Business TravelLong Lake completes $6.3bn takeover of Amex GBTTech / Travel servicesCompleted$6.3bn
- 730 SeptSoftBank Group → DigitalBridge GroupSoftBank completes $3.1bn DigitalBridge takeoverFinancials / Digital infrastructureCompleted$3.1bn
- 823 SeptRoyal Caribbean Group → Sandals Resorts (50%)Royal Caribbean buys half of Sandals for $3bnConsumer / Travel & leisureAgreed$3bn
- 930 SeptHarrison Street Asset Management (with Kenon Holdings) → Vicinity Energy (majority stake)Harrison Street agrees $2.92bn deal for control of Vicinity EnergyEnergy / InfrastructureAgreed$2.9bn
- 1028 SeptBrixmor Property Group and Everview Partners → Slate Grocery REITBrixmor and Everview agree $2.3bn takeover of Slate Grocery REITReal estateAgreed$2.3bn
- 1110 SeptCopart → ACV AuctionsCopart agrees $1.9bn cash deal for ACV AuctionsTech / Automotive marketplacesAgreed$1.9bn
- 1228 SeptAAR Corp → MRO Holdings (65% stake)AAR agrees $1.8bn deal for control of MRO HoldingsIndustrials / AerospaceAgreed$1.8bn
- 1321 SeptInvestor group led by Thomas Priore (WD Capital) → Priority Technology HoldingsPriority Technology agrees $1.6bn CEO-led buyoutFinancials / PaymentsAgreed$1.6bn
- 1416 SeptACP Holdings Acquisition Corp (SPAC) → May MobilityMay Mobility to go public in $1.4bn SPAC dealTech / Autonomous vehiclesAgreed$1.4bn
- 1510 SeptBending Spoons → MiroBending Spoons agrees $1.36bn deal for MiroTech / SoftwareAgreed$1.4bn
- 1628 SeptBold Eagle Acquisition Corp (SPAC) → REDLatticeREDLattice to list via $1.25bn Bold Eagle SPAC dealTech / Defence cyberAgreed$1.3bn
- 1730 SeptHormel Foods → Brakebush BrothersHormel agrees $1.06bn deal for chicken processor BrakebushConsumer / FoodAgreed$1.1bn
- 1818 SeptH.I.G. Capital → Mistras GroupH.I.G. agrees $866m take-private of Mistras GroupIndustrials / Testing servicesAgreed$866m
- 1930 SeptPeoples Bancorp → Capital BancorpPeoples Bancorp agrees $728m all-stock deal for Capital BancorpFinancials / BankingAgreed$728m
- 2024 SeptSelect Water Solutions → Pilot Water SolutionsSelect Water agrees $700m deal for Pilot WaterEnergy / Water midstreamAgreed$700m
- 2122 SeptCognex → RealSenseCognex agrees $500m deal for RealSenseTech / RoboticsAgreed$500m
- 2229 SeptCapitolis → eSecLendingCapitolis buys eSecLending for US$200mFinancialsAgreed$200m
- 2314 SeptCarolwood LP → Thryv print directories businessThryv sells print directories to CarolwoodMedia / PublishingAgreedUndisclosed
- 2430 SeptStripe → ParafinStripe agrees to buy embedded lender ParafinFinancialsAgreedUndisclosed