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With an established presence in the heart of Silicon Valley, as well as offices strategically placed near the other major tech hubs around the world, Simpson Thacher is known as a global technology powerhouse that provides practical legal advice with an appreciation for the nuances and subtleties in the economy’s most complex and fast-changing sector. 
“They are cutting edge, very practical and extremely smart.”
Chambers USA, quoting a client
#1 Tech M&A
Ranked #1 in Global Technology M&A in 2019 (Refinitiv)
Nearly 200 capital markets representations across the Technology industry in the past five years 
Over $400 billion in transaction value on more than 160 M&A matters across the Technology industry in the past five years
“Simpson Thacher is one of our ‘go-to’ firms for high-exposure litigation matters.”
Benchmark Litigation, quoting a client
360-Degree CoverageSimpson Thacher has led some of the most significant and high profile tech matters in recent history, including acquisitions, financings, IPOs, shareholder disputes, cybersecurity issues, government investigations and other litigation matters. Our clients include both well-known players and emerging companies in technology, media and telecommunications, as well as investors, lenders and underwriters. We understand the industry dynamics and challenges faced by companies in this highly competitive space, and render advice tailored to each client’s circumstances and reflective of their key priorities, business model and operations, proprietary IP and the competitive landscape. 

Internet and Social Media
  • Blackstone in its $3 billion acquisition of a majority stake in MagicLab
  • Alibaba in its historic $25 billion NYSE IPO, its record-breaking HK$88 billion Hong Kong IPO and in multiple M&A matters and litigation matters
  • Microsoft in its $28.2 billion acquisition of LinkedIn and the financing and shareholder litigation connected with the transaction
  • SiriusXM in its $3.5 billion acquisition of Pandora
  • Alibaba in its acquisition of the remaining shares of, a leading online delivery service in China
  • and in obtaining dismissal of antitrust class action claims involving the online travel industry
  • Airbnb in its most recent preferred stock offering, which raised over $1 billion in proceeds
  • Underwriters of ETSY in securities litigation in California state court and New York federal court arising from its IPO
  • Twitter in multiple securities and shareholder suits
  • Ancestry in a trademark infringement suit brought against a competitor that used Ancestry’s marks for inferior genetic test kits
  • Ellucian Company, an educational tech leader, in a trademark, false advertising and unfair competition dispute against Eleutian Technologies, a provider of long-distance tutoring in English on the Internet
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Software and Cloud
  • Kronos and Ultimate Software in their proposed $22 billion merger
  • ZoomInfo Technologies in its $1.07 billion IPO
  • Underwriters in the $869.4 million IPO for Dropbox
  • JPMorgan and Goldman Sachs in bridge financing for IBM’s approximately $34 billion acquisition of Red Hat
  • Microsoft in its $7.5 billion acquisition of GitHub
  • Technology Crossover Ventures in its acquisition of a controlling interest in Watermark Insights
  • KKR in the sale of its stake in Visma, a software services provider, in a transaction valued at $5.3 billion and considered the largest ever software buyout in Europe
  • ​Qualcomm​ ​and ​FLO TV​ in a case-dispositive summary judgment win related to TV software​
  • Microsoft in its $19.75 billion debt offering, which marked the company’s “biggest ever sale” of corporate debt and “the third-largest U.S. corporate bond sale of the year”
  • Hellman & Friedman in its $900 million investment in Genesys
  • KKR in its acquisitions of BMC Software and Epicor Software, and its investment in Jitterbit
  • $60 billion in offerings by Oracle
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Hardware and Semiconductors
  • Dell and Silver Lake Partners in its $67 billion acquisition of EMC Corporation (announced value) as well as in a transaction to buy back the VMware tracking stock from the EMC acquisition to return Dell to being publicly traded

  • $131 billion in registered public offerings by Apple, including its $17 billion bond offering—the largest corporate debt offering in history at the time 

  • Cypress Semiconductor Corporation in its proposed $10.1 billion merger with Infineon Technologies

  • HannStar Display Corporation in breach of contract action brought by Sony involving alleged price fixing in the LCD industry
  • KKR in its acquisition of Japan’s Hitachi Kokusai Electric
  • Underwriters in Tesla’s $260 million IPO—the first IPO by a U.S. auto manufacturer since 1956—and subsequent public offerings, aggregating more than $10 billion
  • Avago Technologies (now Broadcom Corporation) in shareholder class actions arising out of the company’s acquisition of PLX Technology, and $16 billion in new credit facilities to finance Avago’s $37 billion acquisition of Broadcom
  • Federal Circuit affirmation of invalidity determination of the Patent Trial and Appeal Board on behalf of CSR relating to a patent owned by Skullcandy Inc.
  • Innolux​, ​HannStar​ and ​Elpida​ in criminal and multi-district litigation relating to alleged cartels in the LCD and computer memory industries 
  • ​LG Display ​in a billion-dollar antitrust lawsuit filed by SONY​
  • NXP Semiconductors in its $40 billion merger with Freescale Semiconductor, including securing antitrust and CFIUS clearance, as well as in its IPO and numerous equity and debt offerings aggregating over $12 billion
  • Texas Instruments in investment grade notes offerings aggregating $8.1 billion
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MedTech and Healthcare IT
  • A global medical technology company​ in an internal investigation related to allegations of fraud and corruption
  • K2M in its $1.4 billion acquisition by Stryker Corporation
  • McKesson in its $1.1 billion acquisition of CoverMyMeds
  • 10x Genomics in its $448.5 million IPO, the largest life sciences IPO in 2019
  • Pamplona Capital Management in its $2.75 billion acquisition of MedAssets
  • Warburg Pincus in connection with $76.5 million equity funding for Outset Medical
  • Hellman & Friedman in the acquisition of MultiPlan
  • ThermoFisher Scientific’s $6.5 billion of financing, including financing in connection with its acquisition of FEI Company
  • Underwriters in Boston Scientific’s debt offerings
  • Panasonic Healthcare in the carve-out acquisition of Bayer AG’s Diabetes Care business division for $1.15 billion
  • Teleflex in multiple acquisitions and offerings 
  • Apax Partners’ $6.725 billion sale with CPPIB and PSP Investments of Acelity
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  • Digital Colony and EQT Infrastructure’s $14.3 billion acquisition of Zayo 
  • JPMorgan as financial advisor to Sprint in its merger with T-Mobile
  • Ericsson in an SEC/DOJ inquiry regarding alleged payments to government officials in various countries
  • CommScope’s $625 million IPO, debt and equity offerings aggregating more than $8.5 billion, as well as Carlyle’s investment in CommScope in connection with CommScope’s $7.4 billion acquisition of ARRIS
  • Silver Lake affiliates’ $1 billion purchase of convertible senior notes of Motorola Solutions
  • Segra’s acquisition of North State Telecommunications Corporation
  • Trial defense of Cisco and on appeal before the Federal Circuit and Supreme Court in patent litigation over Bluetooth technology
  • Vodafone’s sale of its 45% interest in Verizon Wireless to Verizon Communications Inc. for $130 billion
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media and entertainment
  • Tik Tok (formally known as in its $850 million merger into Bytedance
  • KKR, along with other investors, in a $1.25 billion investment in Epic Games
  • SiriusXM in its acquisition of Pandora for $3.5 billion
  • AOL in its $315 million acquisition of​
  • The Official Committee of Unsecured Creditors, which included Terry G. Bollea (better known as WWE star Hulk Hogan), in the bankruptcy proceedings of Gawker Media
  • Apax Partners in connection with Activision Blizzard’s $5.9 billion acquisition of King Digital Entertainment
  • Underwriters of iDreamSky Technology, a mobile game publishing platform in China, in securities litigation arising from its IPO
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Privacy and Cybersecurity
  • True Wind Capital in its equity investment, alongside FTV Capital, in Sysnet Global Solutions 
  • Carbonite in its $143.8 million convertible senior notes offering
  • Beazley in an appellate win against identity theft prevention service Lifelock’s demand for insurance coverage of consumer class actions
  • Hellman & Friedman in its investment in SimpliSafe
  • Defending Berkshire Hathaway-owned insurance companies in cybersecurity class action litigation 
  • KKR in its investment in Darktrace
  • Blackstone in its investment in Cylance
  • Symantec Corporation in its $1.1 billion notes offering in connection with its acquisition of LifeLock, and in the financing of its $4.65 billion acquisition of Blue Coat
  • JPMorgan Chase in obtaining a temporary restraining order, preliminary injunction and permanent injunction in cybersquatting and trademark infringement litigation against defendants operating websites using JPM trademarks without consent
  • Blackstone in the sale of Optiv Security to KKR
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  • First Data in its $2.82 billion IPO, as well as its $22 billion acquisition by Fiserv
  • Refinitiv in its $27 billion acquisition by London Stock Exchange Group
  • Underwriters in Square’s $280 million IPO and subsequent $440 million convertible notes offering
  • Ant Financial in its investments to extend its online payment platform in Asia (bKash, StoneCo, hellopay, Mynt, Kakao Pay, Paytm and Touch ‘n Go) and its $14 billion Series C equity financing
  • Global Payments in its $4.3 billion acquisition of Heartland Payment Systems and in the successful resolution of the related M&A litigation
  • Silver Lake in its acquisition of Blackhawk for $3.5 billion
  • Underwriters of LendingClub in '33 Act litigation arising out of its $1 billion IPO
  • TradeWeb Markets in an antitrust action alleging several financial institutions and trading platforms conspired to limit competition in the $320 trillion market for interest rate swaps
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News & Events



      Spotlight on
      Law360 Recognizes Simpson Thacher With 2020 Technology Practice Group of the Year Award
      Spotlight on
      Simpson Thacher wins “Technology, Media & Telecom Firm of the Year” at The Deal Awards 2019