The derivatives practice at Simpson Thacher & Bartlett LLP advises on a broad range of transactions, including large‑scale infrastructure financings and capital markets matters. The team’s client base spans the energy, data infrastructure, asset management, automotive and aerospace sectors. New York‑based Jonathan Lindabury, who heads the group, is active across derivatives transactions and regulatory advisory work, with recent mandates involving leveraged acquisition financings, convertible senior notes offerings, equity hedging arrangements, and capped call transactions. Considered by clients an ‘absolute star,’ Marc Langer joined the team from Goldman Sachs in April 2025, bringing strength in OTC equity derivatives, regulated swaps and margin lending matters. All lawyers mentioned are based in New York.
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Testimonials
Collated independently by Legal 500 research team.
‘Simpson has thoughtful lawyers, who go above and beyond to help clients. They work extremely hard, and they are great communicators. Marc Langer always picks up the phone to answer questions, and he is an exceptional drafter. I often find myself saying – let's go to Marc because then I know it will be correct. They have good market insight, and they tend to be commercial in their legal thinking.’
‘Marc Langer is an absolute star. He is friendly, confident and smart. He is a great drafter, and it is very easy to work with him.’
Key clients
- Alibaba Group
- Baring Private Equity Asia Fund VIII Limited
- Blackstone Capital Partners
- Cigna Corporation
- Cisco Systems, Inc.
- EQT AB
- First Advantage Corporation
- Gates Industrial Corporation plc
- Morgan Stanley & Co. LLC
- Paramount Global
- Progress Software Corporation
- Silver Lake Partners
Work highlights
Advised 1) AirTrunk in connection with its A$16 billion (approximately US$10.4 billion) (ex-Japan) refinancing and related hedging transaction. This transaction is the region’s largest-ever sustainability linked financing and 2) Blackstone in connection with hedging transactions relating to the acquisition of AirTrunk.
Representation of Global Infrastructure Partners, a part of BlackRock, as lead investor in a global consortium in respect of the financing relating to the purchase of an equity stake in Jafurah Midstream Gas Company for $11 billion as part of a lease and leaseback deal relating to the Jafurah gas processing facilities owned by the Saudi Arabian Oil Company and related hedging transactions.
Representation of initial purchasers for DoorDash’s debut $2.75 billion upsized convertible senior notes offering and concurrent bond hedge and warrant transactions.
Practice head
Jonathan Lindabury
Other key lawyers
Marc Langer