Daryn A. Grossman

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New York +1.212.969.3665

Daryn A. Grossman is a seasoned leader with more than three decades of experience guiding organizations through complex transactions, and high-stakes operational and strategic challenges. She combines deep experience as a corporate transactional lawyer with the crystallized judgment of an executive who has led, transformed and stewarded major organizations.

As the immediate past global Managing Partner of Proskauer, Daryn oversaw the strategy, operations, and business performance of the firm. Her tenure was marked by decisive leadership, organizational alignment, and meaningful revenue growth -- during a period of unprecedented market conditions and significant uncertainty. Clients and colleagues describe Daryn as a skilled and tactical advisor with exceptional instincts for building alliances and orchestrating teams for maximum impact.

Daryn built and led Proskauer’s transactional technology and life sciences groups. She continues her legal practice, while bringing the full breadth of her leadership, operational experience, and strategic insight to her clients. She advises players across IP-driven and innovation-focused sectors on collaborations, partnerships, licensing, M&A and strategic corporate initiatives. Her experience gives her a unique ability to bridge legal, business, and operational considerations -- understanding not only how to effectively structure, negotiate and execute meaningful transactions, but how those decisions resonate inside complex organizations.

Boards, C-suites, and senior leadership teams regularly seek Daryn’s judgment at critical inflection points. She is recognized for her clarity, candor, and ability to synthesize complexity into actionable direction. Her leadership style blends experience, conviction, and operational insight -- enabling her to mobilize teams, navigate uncertainty, and create the conditions for progress. Daryn is formally trained as a professional mediator. She is energized by opportunities to support organizations to progress with purpose and alignment.

Daryn’s leadership has been recognized by Chambers, IAM Patent & Licensing, The Legal 500, Best Lawyers in America, and Crain’s New York Business. She has received numerous honors for her achievements, including Euromoney’s Women in Business Law “Best in Technology” award. IAM Patent notes: “In the IP monetization area, there is nothing crack negotiator Daryn Grossman can’t do… she can go toe to toe with anybody. She just gets deals done.”

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Some recent examples of Daryn鈥檚 work include representing:

One of the world’s largest global independent pharmaceutical companies in its strategic licensing and acquisition matters
Amadeus IT Holding, S.A., a leading technology provider for the global travel industry, in its $500 million acquisition of Newmarket International
Annie’s, Inc., as intellectual property counsel, in its definitive agreement to be acquired by General Mills, Inc. for approximately $820 million
Ares Management LLC and the Canada Pension Plan Investment, as intellectual property counsel, in its acquisition of Neiman Marcus Group LTD Inc. for $6 billion
Bowlmor AMF, the world’s largest operator of bowling centers, as intellectual property counsel, in its acquisition of Brunswick Corporation’s bowling center business
Celgene Corporation in the $7.2 billion acquisition of Receptos, Inc.

Celgene Corporation in numerous transactions, including in its collaborations and options to acquire:

Acetylon Pharmaceuticals
VentiRx Pharmaceuticals
VAXON Biotech
Northern Biologics

Cürex Group in its technology and licensing matters relating to linking institutional foreign exchange with capital markets, including with partner FTSE to create the FTSE Cürex FX Index Series
Grifols in numerous transactions, including:

$1.85 billion acquisition of the blood screening business of its commercial partner, Hologic
$1.7 billion acquisition of the diagnostics unit of Novartis

Henry Schein in its agreement to acquire a majority interest in BioHorizons, a U.S.-based manufacturer of advanced dental implants
Intelligent Energy in its acquisition of the portable fuel cell and disposable fuel cartridge assets of Societe Bic
Markit, in its commercial and licensing matters, including its joint venture with Genpact Limited, to be known as Markit/Genpact KYC 51黑料
Mereo BioPharma, a new biopharmaceutical company, on its successful fundraising and subsequent acquisition of assets from Novartis Pharmaceuticals
Mount Sinai (Icahn School of Medicine and Mount Sinai Innovation Partners) in its biopharma and technology licensing and collaboration matters
The National Hockey League in a multi-year North American partnership with SAP SE aimed at transforming hockey through technology co-innovation
Neiman Marcus Group, as intellectual property counsel, in its agreement to acquire Munich-based Mytheresa.com, a leading online retailer of luxury fashion
Pershing LLC in a long term outsourced services relationship relating to clearance, settlement and related services to financial institutions and broker-dealers with a multinational registered investment advisor and broker-dealer
Regenerex LLC in an exclusive license and research collaboration agreement with Novartis for the research, development, manufacturing and commercial use of Regenerex’s novel allogeneic hematopoietic stem cell based therapy platform
Sunrise Sports & Entertainment and its general partner, Clifford Viner, the sale of the Florida Panthers (NHL)

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