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Wednesday 14 October 2026
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Top mergers and acquisitions in United States in March 2026

Every verified merger and acquisition involving United States in this period, ranked by disclosed value. Updated every morning.

We tracked 38 deals involving United States in March 2026, 26 of them with a disclosed value, worth $119.3bn in total. The largest was Global Infrastructure Partners and EQT Infrastructure VI (with CalPERS and QIA)'s $33.4bn deal for The AES Corporation, ahead of Sysco Corporation and Jetro Restaurant Depot at $29.1bn.

Top mergers and acquisitions in United States in March 2026

United States M&A news →
  1. 12 MarGlobal Infrastructure Partners and EQT Infrastructure VI (with CalPERS and QIA) → The AES CorporationGIP and EQT agree $33.4bn take-private of AESEnergy / Power generation and utilitiesAgreed$33.4bn
  2. 230 MarSysco Corporation → Jetro Restaurant DepotSysco agrees US$29.1bn deal for Jetro Restaurant DepotConsumer / Foodservice distributionIn review$29.1bn
  3. 316 MarPublic Storage → National Storage Affiliates TrustPublic Storage agrees US$10.5bn deal for National Storage AffiliatesReal estate / Self-storage REITCompleted$10.5bn
  4. 425 MarMerck & Co., Inc. → Terns Pharmaceuticals, Inc.Merck agrees US$6.7bn deal for Terns PharmaceuticalsHealthcare / BiotechCompleted$6.7bn
  5. 531 MarBiogen Inc. → Apellis Pharmaceuticals, Inc.Biogen agrees US$5.6bn deal for ApellisHealthcare / BiotechCompleted$5.6bn
  6. 611 MarCintas Corporation → UniFirst CorporationCintas agrees US$5.5bn deal for UniFirstIndustrials / Uniform and facility servicesIn review$5.5bn
  7. 72 MarWelsh, Carson, Anderson & Stowe, Robert A. Ortenzio and Martin F. Jackson → Select Medical Holdings CorporationWCAS and Select Medical founders agree $3.9bn take-privateHealthcare / Rehabilitation and critical illness recoveryCompleted$3.9bn
  8. 83 MarRosebank Industries plc → CPM and MW ComponentsRosebank agrees US$3.05bn deal for CPM and MW ComponentsIndustrials / Engineered equipment and componentsCompleted$3.1bn
  9. 930 MarCarlyle → MAI Capital Management (majority stake)Carlyle takes control of MAI Capital at $2.8bn-plus valuationFinancials / Wealth managementCompleted$2.8bn
  10. 106 MarServier → Day One Biopharmaceuticals, Inc.Servier agrees US$2.5bn deal for Day One BiopharmaceuticalsHealthcare / BiotechCompleted$2.5bn
  11. 1120 MarNovartis AG → Pikavation Therapeutics (Synnovation Therapeutics)Novartis agrees US$2bn deal for Synnovation's PI3Kα unitHealthcare / BiotechCompleted$2bn
  12. 1223 MarGilead Sciences, Inc. → Ouro MedicinesGilead agrees US$1.7bn deal for Ouro MedicinesHealthcare / BiotechCompleted$1.7bn
  13. 132 MarHudbay Minerals Inc. → Arizona Sonoran Copper Company Inc.Hudbay agrees US$1.48bn all-share deal for Arizona Sonoran CopperMining / CopperCompleted$1.5bn
  14. 1426 MarHenkel AG & Co. KGaA → Olaplex Holdings, Inc.Henkel agrees US$1.4bn deal for OlaplexConsumer / Hair careCompleted$1.4bn
  15. 159 MarMonomoy Capital Partners → Jiffy Lube International (incl. Premium Velocity Auto)Shell sells Jiffy Lube to Monomoy for $1.3bnConsumer / Automotive servicesCompleted$1.3bn
  16. 163 MarAccenture plc → Ookla (Ziff Davis Connectivity division)Accenture agrees US$1.2bn deal for Speedtest owner OoklaTechnology / Network intelligence softwareCompleted$1.2bn
  17. 1727 MarCrossCountry Mortgage → Two Harbors Investment Corp.CrossCountry Mortgage outbids UWM for Two HarborsFinancials / Mortgage servicingCompleted$1.1bn
  18. 1812 MarSavills plc → Eastdil Secured LLCSavills agrees US$1.1bn deal for Eastdil SecuredFinancials / Real estate investment bankingCompleted$1.1bn
  19. 1919 MarApollo Funds → Realty Income retail net lease joint venture (49% stake)Apollo takes 49% of $1bn Realty Income retail portfolio ventureReal estate / Net lease retailAgreed$1bn
  20. 209 MarAgilent Technologies Inc. → Biocare MedicalAgilent agrees US$950m deal for Biocare MedicalHealthcare / DiagnosticsCompleted$950m
  21. 219 MarUniversal Health Services, Inc. → Talkspace, Inc.UHS agrees US$835m deal for TalkspaceHealthcare / Behavioural healthCompleted$835m
  22. 2227 MarOtsuka Pharmaceutical Co., Ltd. → Transcend Therapeutics, Inc.Otsuka agrees deal worth up to US$1.2bn for Transcend TherapeuticsHealthcare / BiotechCompleted$700m
  23. 2319 MarCollegium Pharmaceutical, Inc. → AZSTARYS (Corium Therapeutics)Collegium agrees US$650m deal for ADHD drug AZSTARYSHealthcare / PharmaceuticalsCompleted$650m
  24. 2430 MarSun Life Financial (BGO / SLC Management) → Bell PartnersSun Life buys Bell Partners as it takes full control of BGO and CrescentFinancials / Real estate investment managementCompleted$350m
  25. 252 MarGyre Therapeutics, Inc. → Cullgen Inc.Gyre agrees US$300m all-stock deal for CullgenHealthcare / BiotechCompleted$300m
  26. 2616 MarAeroVironment, Inc. → Empirical Systems Aerospace, Inc. (ESAero)AeroVironment buys ESAero for about US$200mIndustrials / DefenceCompleted$200m
  27. 273 MarThoma Bravo → WWEX GroupThoma Bravo to buy WWEX and merge it with AuctaneTransport / Logistics and shipping technologyCompletedUndisclosed
  28. 289 MarOpenAI → PromptfooOpenAI agrees to buy AI security start-up PromptfooTechnology / AI securityCompletedUndisclosed
  29. 2911 MarStonepeak (via Astound Broadband) → GFiber (formerly Google Fiber)Stonepeak to take control of Google Fiber in Astound mergerTelecom / Fibre broadbandAgreedUndisclosed
  30. 3011 MarKPS Capital Partners → Jennmar (controlling interest)KPS takes control of ground support maker JennmarIndustrials / Mining and infrastructure ground support productsCompletedUndisclosed
  31. 3111 MarBlackstone Energy Transition Partners → Advanced Cooling Technologies (majority stake)Blackstone backs data centre cooling specialist ACTIndustrials / Thermal managementAgreedUndisclosed
  32. 3212 MarArcLight Capital Partners → Invenergy AMPCI Thermal Power (InfraBridge's 50% stake)ArcLight buys InfraBridge's half of 5.4GW Invenergy power portfolioEnergy / Gas-fired power generationAgreedUndisclosed
  33. 3313 MarOaktree Capital Management → Atlantic Coast Life Insurance Company (controlling stake)Oaktree agrees to take control of A-CAP's Atlantic Coast LifeFinancials / Life insurance and annuitiesAgreedUndisclosed
  34. 3424 MarSRS Distribution (The Home Depot) → Mingledorff'sHome Depot's SRS agrees deal for HVAC distributor Mingledorff'sIndustrials / HVAC distributionCompletedUndisclosed
  35. 3525 MarClearlake Capital Group → Qualus Corp.Clearlake buys grid services firm Qualus from New MountainIndustrials / Power grid engineering servicesCompletedUndisclosed
  36. 3626 MarCorebridge Financial, Inc. → Equitable Holdings, Inc.Corebridge and Equitable agree US$22bn all-stock mergerFinancials / Life insurance and retirementAgreedUndisclosed
  37. 3727 MarNovartis AG → Excellergy, Inc.Novartis agrees deal worth up to US$2bn for ExcellergyHealthcare / BiotechCompletedUndisclosed
  38. 3827 MarSAP SE → Reltio Inc.SAP agrees to buy master data specialist ReltioTechnology / Data management softwareCompletedUndisclosed