Sepideh Mousakhani

Partner
Full contact info

I enjoy being an anchor to clients in crisis moments. Whether you're a high growth startup or a public company, or considering your M&A or IPO exit strategy, advising you through tough moments with practical, business-minded advice is what drives me.

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Experience

CalypsoAI to Be Acquired by F5

September 17, 2025

Cooley advised CalypsoAI, an adaptive artificial intelligence security platform that empowers enterprises to innovate safely, on its acquisition by F5, a global leader in delivering and securing every app and application programming interface.

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Related contacts

Jon Gavenman
Partner, Palo Alto
Sepideh Mousakhani
Partner, Palo Alto
Kealan Santistevan
Associate, Palo Alto
Timothy Shapiro
Partner, Palo Alto
Caitlin Courtney
Partner, Palo Alto
Jeff Goldman
Special Counsel, Palo Alto
Alex Maki
Associate, Palo Alto
Sophie Bucci
Associate, Santa Monica
Calvin Lee
Associate, New York
David Fletcher
Partner, Washington, DC
Kevin King
Partner, Washington, DC
Bill Galliani
Senior Counsel, Palo Alto
Sharon Connaughton
Special Counsel, Washington, DC
Andrew Linch
Special Counsel, London
MaryBeth Shreiner
Special Counsel, Reston
Karen Tsai
Special Counsel, Washington, DC
Umer Chaudhry
Associate, Washington, DC
Tucker Cochenour
Associate, Palo Alto
Mark Cornillez-Ty
Associate, Los Angeles
Mari Dugas
Associate, Washington, DC
Joshua Elefant
Associate, Palo Alto
Rick Jantz
Associate, Santa Monica
Emily Mok
Associate, Reston
Michelle Peleg
Associate, San Francisco
Anna Anderson
Paralegal Specialist, London
Patrick O. Johnson
Associate, Boston
Jake Ironfield
Transactional Quantitative Analyst, New York

Related Practices & Industries

Logik.ai Announces Acquisition by ServiceNow

April 3, 2025

Cooley advised Logik.ai, an industry leader offering a modern, artificial intelligence (AI)-powered, composable configure, price and quote solution, on its acquisition by ServiceNow (NYSE: NOW), the AI platform for business transformation.

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Related contacts

Sepideh Mousakhani
Partner, Palo Alto
Jon Gavenman
Partner, Palo Alto
Sangitha Palaniappa
Associate, Palo Alto
Megan Browdie
Partner, Washington, DC
Caitlin Courtney
Partner, Palo Alto
Ross Eberly
Partner, Santa Monica
Stella Sarma
Partner, Brussels
Timothy Shapiro
Partner, Palo Alto
Steve Tonsfeldt
Partner, Palo Alto
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Bryan Berman
Special Counsel, Colorado
Stacey A. Bradford
Special Counsel, Washington, DC
Sharon Connaughton
Special Counsel, Washington, DC
Andrew Epstein
Special Counsel, Seattle
Kristin O'Hanlon
Special Counsel, San Francisco
Karen Tsai
Special Counsel, Washington, DC
Tamara Chin Loy
Associate, Washington, DC
Joshua Elefant
Associate, Palo Alto
Yichen Liu
Associate, Palo Alto
Michael Pelle
Associate, New York
Breanna Qin
Associate, Palo Alto
Erica Russell
Associate, San Francisco
Kealan Santistevan
Associate, Palo Alto
Megan Stallworth
Associate, Palo Alto
Christopher Suhler
Associate, Colorado
Chris Rhem
Paralegal Specialist, San Francisco
Katie Kissner
Quantitative Analyst, San Francisco
Brian Mitchell
Transactional Quantitative Analyst, San Diego

Related Practices & Industries

Egnyte Announces Majority Investment From GI Partners and TA Associates

February 25, 2025

Cooley advised Egnyte, a provider of secure content collaboration and governance solutions, on its strategic growth investment from GI Partners and TA Associates.

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Related contacts

Eric Jensen
Senior Counsel, Palo Alto
Sepideh Mousakhani
Partner, Palo Alto
Anne Lieberman
Partner, Santa Monica
Steve Tonsfeldt
Partner, Palo Alto
Kealan Santistevan
Associate, Palo Alto
Sangitha Palaniappa
Associate, Palo Alto
Michael Bergmann
Partner, Washington, DC
Brett De Jarnette
Partner, Palo Alto
Patrick Flanagan
Partner, New York
Todd Gluth
Partner, San Diego
Tracy Rubin
Partner, Palo Alto
Stella Sarma
Partner, Brussels
Timothy Shapiro
Partner, Palo Alto
David Silverman
Partner, New York
Ryan Vann
Partner, Chicago
Summer Wynn
Partner, San Diego
Howard Morse
Senior Counsel, Washington, DC
Sharon Connaughton
Special Counsel, Washington, DC
Rebecca Ross
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Nathan Alamillo
Associate, Santa Monica
Caitlin Breitenbruck
Associate, Seattle
Norma Chayo Dichi
Associate, Washington, DC
Queenie Chen
Associate, Palo Alto
Nikki Chang DiFederico
Associate, San Francisco
Megan Drill
Associate, San Diego
Jeremy M. Exelbert
Associate, New York
Nathaniel Hearn Jr.
Associate, Chicago
Vicky Kandabarow
Associate, Washington, DC
Nicollette R. Kirby
Associate, Washington, DC
Allison Kutner
Associate, New York
Alexandra Leavy
Associate, New York
Emily Lee
Associate, Palo Alto
Michael Pelle
Associate, New York
Katie Stevens
Associate, Palo Alto
Rubin Waranch
Associate, Colorado
Kevin Gurley
Quantitative Analyst, New York
Brian Mitchell
Transactional Quantitative Analyst, San Diego

Related Practices & Industries

Logik.io Raises $25 Million Series B

October 8, 2024

Cooley advised Logik.io, the company that reimagines configure, price and quote (CPQ) and consumerizes enterprise selling experiences, on its $25 million Series B funding to accelerate CPQ innovation and further expand company growth.

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Related contacts

Sepideh Mousakhani
Partner, Palo Alto
Jon Gavenman
Partner, Palo Alto
Kealan Santistevan
Associate, Palo Alto
Yichen Liu
Associate, Palo Alto
Elaine Huang
Associate, Palo Alto
Zi Ye
Associate, Palo Alto
John Sellers
Senior Counsel, Palo Alto
Karen Tsai
Special Counsel, Washington, DC
Sarah Oliai
Associate, Washington, DC

Related Practices & Industries

AuditBoard to Be Acquired by Hg for More Than $3 Billion

May 23, 2024

Cooley advised AuditBoard, a leading connected risk platform transforming audit, risk, compliance, and environmental, social and governance (ESG) management, on its agreement to be acquired for more than $3 billion by Hg, an experienced and leading global investor in compliance, risk and accounting software over the last 20 years.

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Related contacts

Jamie Leigh
Partner, San Francisco
Anne Lieberman
Partner, Santa Monica
Caitlin Breitenbruck
Associate, Seattle
Eric Jensen
Senior Counsel, Palo Alto
Sepideh Mousakhani
Partner, Palo Alto
Alessandra Murata
Partner, Palo Alto
Todd Gluth
Partner, San Diego
Howard Morse
Senior Counsel, Washington, DC
Megan Browdie
Partner, Washington, DC
David Silverman
Partner, New York
Tracy Rubin
Partner, Palo Alto
Ross Eberly
Partner, Santa Monica
Karen Tsai
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Rubin Waranch
Associate, Colorado
Queenie Chen
Associate, Palo Alto
Pat O'Connell
Associate, New York
Elizabeth Galvin
Associate, Boston
Athina Gaki
Associate, Brussels
Allison Kutner
Associate, New York
Breanna Qin
Associate, Palo Alto

Related Practices & Industries

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California

Rankings and accolades

Super Lawyers, Northern California Rising Star (2016 – 2023)

Memberships and affiliations

American Bar Association (ABA)

The State Bar of California

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