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Evan Koo Email & Phone Number

Vice President, Corporate Controller at Ionis Pharmaceuticals, Inc.
Location: Orange County, California, United States 5 work roles 1 school
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✓ Verified Jul 2026 3 data sources Profile completeness 86%

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Current company
Role
Vice President, Corporate Controller
Location
Orange County, California, United States
Company size

Who is Evan Koo? Overview

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Quick answer

Evan Koo is listed as Vice President, Corporate Controller at Ionis Pharmaceuticals, Inc., a with 653 employees, based in Orange County, California, United States. AeroLeads shows a matched LinkedIn profile for Evan Koo.

Evan Koo previously worked as Corporate Controller at Ionis Pharmaceuticals, Inc. and Vice President, Corporate Controller at Aeon Biopharma, Inc.. Evan Koo studied at University Of California, Los Angeles.

Company email context

Email format at Ionis Pharmaceuticals, Inc.

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Ionis Pharmaceuticals, Inc.

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Profile bio

About Evan Koo

A solutions-oriented accounting and finance business partner with a combined 20+ years of experience in industry/public accounting. Diverse background ranging from large multi-national SEC registrants to successful VC/PE backed start-ups in the health care, life sciences, technology, and managed care industries. Exceptional people leader committed to mentoring and growth. Active CPA license.

Current workplace

Evan Koo's current company

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Ionis Pharmaceuticals, Inc.
Ionis Pharmaceuticals, Inc.
Vice President, Corporate Controller
carlsbad, california, united states
Website
Employees
653
AeroLeads page
5 roles

Evan Koo work experience

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Vice President, Corporate Controller

Orange County, California, United States

Oct 2021 - Jul 2022

Director, Technical Accounting

Irvine, California, United States

Leader of Technical Accounting and Policy and sought-out partner to all business functions. Experiences include:• Financial analysis and presentations• Acquisitions/dispositions including accounting due diligence and integrations• New accounting standard adoption including leases and CECL• System implementation of new SaaS subledger• Convertible debt offering• Portfolio investments and joint ventures• Real estate transactions including sale-leaseback• Valuations… Show more Leader of Technical Accounting and Policy and sought-out partner to all business functions. Experiences include:• Financial analysis and presentations• Acquisitions/dispositions including accounting due diligence and integrations• New accounting standard adoption including leases and CECL• System implementation of new SaaS subledger• Convertible debt offering• Portfolio investments and joint ventures• Real estate transactions including sale-leaseback• Valuations for purchase price allocations and impairment tests• Hedge accounting• SEC filings including Forms 10-K and 10-Q and comment letters• Accounting policy setter• SOX internal controls• External audit oversight• Leadership with commitment to mentorship and inclusion in a matrixed multi-national company Show less

Oct 2016 - Oct 2021

Assurance Senior Manager

Los Angeles And Irvine, Ca

An accounting and assurance executive with 16 years of diverse Big 4 public accounting experience, I led high-performing and diverse audit teams to provided quality and value-additive client service. I have served clients in the health and financial services industries; including managed care and asset management organizations, multi-hospital systems, medical device and pharmaceutical companies. In addition to helping companies navigate complex accounting, US GAAP, SEC, and financial… Show more An accounting and assurance executive with 16 years of diverse Big 4 public accounting experience, I led high-performing and diverse audit teams to provided quality and value-additive client service. I have served clients in the health and financial services industries; including managed care and asset management organizations, multi-hospital systems, medical device and pharmaceutical companies. In addition to helping companies navigate complex accounting, US GAAP, SEC, and financial statement reporting issues, my professional experiences included the following:• Extensive technical accounting knowledge and experience related to registration statements, 10-Qs, 10-Ks, Rule 144A offerings, business combinations, debt and equity transactions, revenue recognition, lease accounting, derivative transactions, SOX 404 implementation, audits of ICFR, and SEC reporting matters (e.g., S-X requirements)• Coordination of the national and multi-national financial statement audits, quarterly reviews, and audits of internal control over financial reporting of SEC registrants• Execution of quality reviews of audit engagements as part of EY’s Audit Quality Review program• Promotion of EY’s culture of inclusiveness by serving on the region’s Pan Asian Professional Network leadership committee• Recruitment and development of audit professionals and teams• Delivery of office-wide training on various accounting and auditing matters and professional development topics Show less

Oct 2000 - Oct 2016
Team & coworkers

Colleagues at Ionis Pharmaceuticals, Inc.

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1 education record

Evan Koo education

FAQ

Frequently asked questions about Evan Koo

Quick answers generated from the profile data available on this page.

What company does Evan Koo work for?

Evan Koo works for Ionis Pharmaceuticals, Inc..

What is Evan Koo's role at Ionis Pharmaceuticals, Inc.?

Evan Koo is listed as Vice President, Corporate Controller at Ionis Pharmaceuticals, Inc..

Where is Evan Koo based?

Evan Koo is based in Orange County, California, United States while working with Ionis Pharmaceuticals, Inc..

What companies has Evan Koo worked for?

Evan Koo has worked for Ionis Pharmaceuticals, Inc., Aeon Biopharma, Inc., Wd, A Western Digital Company, and Ernst & Young Llp.

Who are Evan Koo's colleagues at Ionis Pharmaceuticals, Inc.?

Evan Koo's colleagues at Ionis Pharmaceuticals, Inc. include Mary Ann (Del Fiorentino) Mchale, Ida Goldstein, Christina Torres, Andrzej Wilczynski, and Kym Bradley.

How can I contact Evan Koo?

You can use AeroLeads to view verified contact signals for Evan Koo at Ionis Pharmaceuticals, Inc., including work email, phone, and LinkedIn data when available.

What schools did Evan Koo attend?

Evan Koo studied at University Of California, Los Angeles.

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