Natasha Leskovsek

Of Counsel
Full contact info

I’ve taken my clinical and consulting experience for pharma and biotech companies on regulatory issues and brought them to Cooley’s clients.

Passions

Providing practical compliance solutions at the intersection of science and regulation

Experience

Y-mAbs Therapeutics Agrees to Acquisition by SERB Pharmaceuticals

August 5, 2025

Cooley advised Y-mAbs Therapeutics, a commercial-stage biopharmaceutical company focused on the development and commercialization of antibody-based therapeutics for the treatment of cancer, on its definitive merger agreement with SERB Pharmaceuticals. Under the agreement, SERB will acquire Y-mAbs, including its lead commercial oncology asset, DANYELZA, in an all-cash transaction representing an equity value of approximately $412 million.

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Sarah Sellers
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Megan Browdie
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Brad Goldberg
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Natasha Leskovsek
Of Counsel, Washington, DC
Julia Kim
Special Counsel, New York
Justin Kisner
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MaryBeth Shreiner
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Karen Tsai
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Amanda Weiss
Special Counsel, New York
Rajdeep Roger Bains
Associate, San Diego
Dayne Brown
Associate, New York
Norma Chayo Dichi
Associate, Washington, DC
Sharon Davidov
Associate, New York
Athina Gaki
Associate, Brussels
Kyle Hess
Associate, New York
Katie Kaufman
Associate, Boston
Nicollette R. Kirby
Associate, Washington, DC
Christopher Nickas
Associate, New York
Arda Can Tekin
Associate, New York
Shaun (Tianjie) Wang
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Blue Owl Capital Extends up to $500 Million in Senior Secured Credit to Madrigal Pharmaceuticals

July 21, 2025

Cooley advised Blue Owl (NYSE: OWL), a leading asset manager redefining alternatives, on an up to $500 million term loan facility for Madrigal Pharmaceuticals (NASDAQ: MDGL), a biopharmaceutical company focused on delivering novel therapeutics for metabolic dysfunction-associated steatohepatitis.

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Michael Tollini
Partner, Washington, DC
Addison Pierce
Partner, Chicago
Dr. Jon Cousin
Partner, Washington, DC
Geoffrey Spolyar
Partner, Boston
Xander Lee
Partner, Santa Monica
Phil Mitchell
Partner, New York
Steve Flores
Partner, Chicago
Michael Neumeister
Partner, Los Angeles
Randy Sabett
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Wyatt Kernell
Associate, Colorado
Dr. Asako Kubota
Associate, Washington, DC
Allison Kutner
Associate, New York
Amanda Pacheco
Associate, Palo Alto
Charles A. Watkins II
Associate, Santa Monica
Jeffery Wyzykowski
Patent Agent, Washington, DC
Margie Murphy
Paralegal Specialist, New York

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Capstan Therapeutics Announces up to $2.1 Billion Acquisition by AbbVie

June 30, 2025

Cooley advised Capstan Therapeutics, a clinical-stage biotechnology company with a mission to multiply therapeutic possibilities for patients through targeted in vivo RNA technologies, on its definitive agreement to be acquired by AbbVie.

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Rama Padmanabhan
Partner, San Diego
Ken Rollins
Partner in Charge – San Diego, San Diego
Edmond Lay
Partner, San Diego
Charity Williams
Partner, San Diego
Lindsey O'Crump
Associate, Washington, DC
Megan Browdie
Partner, Washington, DC
Ross Eberly
Partner, Santa Monica
Christopher Kimball
Partner, Washington, DC
Alessandra Murata
Partner, Palo Alto
W. Chad Shear
Partner, San Diego
Jeffrey J. Tolin
Partner, New York
Stacey A. Bradford
Special Counsel, Washington, DC
Andrew Epstein
Special Counsel, Seattle
Randy Sabett
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Rachel Thorn
Of counsel, New York
Alexandria Ashour
Associate, San Diego
Navya Dasari
Associate, New York
Joshua Elefant
Associate, Palo Alto
Tony P. Guan
Associate, Santa Monica
Michelle Hunt
Associate
Emily Mok
Associate, Reston
Jonathan Perez-Reyzin
Associate, San Diego
Breanna Qin
Associate, Palo Alto
Christopher Suhler
Associate, Colorado
Novak Topalovic
Associate, San Diego
Heidi E. Wang
Associate, San Diego
Rubin Waranch
Associate, Colorado
Yuhan Wu
Associate, Palo Alto
Joanna Zhang
Associate, San Diego
Jessica Wade
Paralegal Specialist, San Diego

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Otsuka Pharmaceutical Announces Global Strategic Collaboration With Harbour BioMed

June 23, 2025

Cooley advised Otsuka Pharmaceutical, a total healthcare company focused on each individual’s potential to enhance their well-being, on its global strategic collaboration with Harbour BioMed to advance BCMAxCD3 bispecific T-cell engagers for treating autoimmune diseases.

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Jennifer Raab
Partner, Palo Alto
Alison Freeman-Gleason
Of Counsel, Seattle
Rachel Thorn
Of counsel, New York
Zack Gong
Associate, Shanghai
Freddy Yip
Associate, Hong Kong
Jonathan Kaufman
Associate, Palo Alto
Natasha Leskovsek
Of Counsel, Washington, DC
Robert Eisenbach
Of Counsel, San Francisco
Amanda Pacheco
Associate, Palo Alto

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Caris Life Sciences Announces $494 Million IPO

June 20, 2025

Cooley advised the underwriters of Caris Life Sciences, a patient-centric, next-generation artificial intelligence techbio company and precision medicine pioneer, in connection with Caris’ $494 million initial public offering (IPO).

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Eric Blanchard
Partner, Boston
Div Gupta
Partner, New York
Charlie Kim
Partner, San Diego
Minkyu Park
Special Counsel, New York
Mark Ballantyne
Partner, Reston
Ariane A. Andrade
Partner, Chicago
Shamis Beckley
Partner, Boston
Caitlin Courtney
Partner, Palo Alto
Annie Froehlich
Partner, Washington, DC
Daniel Grooms
Partner, Washington, DC
Jonie Ing Kondracki
Partner, San Francisco
Phil Mitchell
Partner, New York
Sonia Nath
Partner, Washington, DC
Gerard O'Shea
Partner, New York
Tracy Rubin
Partner, Palo Alto
Francis Wheeler
Senior Counsel, Colorado
Son Nguyen
Special Counsel, Washington, DC
Randy Sabett
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
William Corcoran
Of Counsel, Boston
Natasha Leskovsek
Of Counsel, Washington, DC
Trevor Bossi
Associate, Boston
Cara Buchicchio
Associate, New York
Eric J. Delgado
Associate, New York
Matthew Iannone
Associate, New York
Wyatt Kernell
Associate, Colorado
Allison Kutner
Associate, New York
Calvin Lee
Associate, New York
Amiti C. Rothstein
Associate, New York
Dr. Jason Valentine
Associate, Washington, DC
Margaux Arntson
Associate

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Food and Drug Law Institute