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Ari Chester Email & Phone Number

Head of Specialty at Argo Group at Argo Group
Location: New York, United States 7 work roles 3 schools
1 work email found @siriusgroup.com 1 phone found area 412 LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 1 phone

Work email a****@siriusgroup.com
Direct phone (412) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Head of Specialty at Argo Group
Location
New York, United States
Company size

Who is Ari Chester? Overview

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Quick answer

Ari Chester is listed as Head of Specialty at Argo Group at Argo Group, a with 1 employees, based in New York, United States. AeroLeads shows a work email signal at siriusgroup.com, phone signal with area code 412, and a matched LinkedIn profile for Ari Chester.

Ari Chester previously worked as Head of Specialty at Argo Group and Advisor at Butter Insurance. Ari Chester holds Mba, Strategy And Finance from The Wharton School.

Company email context

Email format at Argo Group

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{first}.{last}@siriusgroup.com
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AeroLeads found 1 current-domain work email signal for Ari Chester. Compare company email patterns before reaching out.

Profile bio

About Ari Chester

Executive with 20+ years of experience in the property and casualty insurance industry. As Head of Specialty at Argo, my businesses include Inland Marine, Garage, Programs, Fronting, Property, and Tax Liability. Previously, I ran US and Canada Treaty (Property, Casualty) at SiriusPoint, focused on specialist, dislocating market segments and with emphasis on Programs.Earlier in my career, I led several practices in Insurance as a Partner at McKinsey & Company, including Risk, Underwriting, and Strategy. In 2011, I co-founded Ingenuity, McKinsey's Artificial Intelligence & Advanced Analytics team in Insurance which has since integrated into Quantum Black. I have lived in Singapore, Belgium, Nigeria, and Dubai, and co-led McKinsey’s work in Lloyd’s and the London Market. I am a frequent speaker at industry events and have authored several articles on issues facing the insurance industry. I’m passionate about specialty risk, underwriting excellence, and the role insurance plays in creating economic resilience.

Listed skills include Corporate Development, Strategic Planning, Leadership, Strategy, and 12 others.

Current workplace

Ari Chester's current company

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Argo Group
Argo Group
Head of Specialty at Argo Group
Pembroke
Website
Employees
1
AeroLeads page
7 roles · 21 years

Ari Chester work experience

A career timeline built from the work history available for this profile.

Head Of Specialty

Current

New York, Ny, Us

Specialty is one of the three P&L towers at Argo Group across the US and Bermuda platforms. Specialty includes Inland Marine, Programs, Fronting, Garage, Property, and Tax Liability. For Inland Marine, we are the leading team in the industry focused on Transportation/Logistics. Garage is a binding authority business focused on car dealers, service/repair, and specialty vehicles. For Programs and Fronting, we are an A-, Size 13 balance sheet with a 50 state admitted and non-admitted capability, as well as longstanding experience supporting programs. Our Fronting team has unique capabilities (fronting, systems, claims) in Workers Comp. Bermuda Direct & Facultative Property focuses on large account shared-and-layered business, both property and energy. We are also building a Renewables vertical. Argo Group is subsidiary of Brookfield Wealth Solutions.

Oct 2023 - Present

Advisor

New York City, Us

Tech-enabled MGA offering BOP/package solutions for affinities and small businesses. Lead investors NFX and Better Tomorrow Ventures; backed by The Hartford

Jan 2021 - Feb 2024

Advisory Council Member

Boston, Massachusetts, Us

Tremor is a tech-driven reinsurance placement platform, matching ceding companies with reinsurance capacity. Tremor placed $175m reinsurance premium in 2022, and $8b reinsurance limit since 2018.

Sep 2022 - Sep 2023

Head Of Us And Canada, Reinsurance

Corporate Headquarters: Bermuda, Se

My portfolio focused on specialty, niche, and dislocated risk. Casualty treaty products spanned General Liability (primary/excess), Products Liability, Professional Lines (D&O, E&O, EPLI), Workers Comp, and Auto. Property treaty included structured transactions, low-Cat MGAs, Crop/Dairy, and other specialty niches. Both Casualty and Property focused on specialist MGAs with deep expertise and/or an opportunistic appetite that takes advantage of supply-demand imbalance; for instance, we were the #2 global reinsurer for Cannabis. At the end of 2023, the 2021-2022 treaty years in my portfolio were >50% developed and performing several points better than priced. With my teams, we instilled entrepreneurial focus on specialist classes with relentless underwriting discipline and emphasis on over-the-cycle profitability.

Dec 2021 - Aug 2023

Chief Operating Officer, Americas Reinsurance

Corporate Headquarters: Bermuda, Se

Led SiriusPoint's global transformation in 2021 to reset the Underwriting appetite and re-design the supporting operations and branch footprint, including a material reduction in aggregates from global non-peak zone Property Cat and closure of 5 out of 10 global offices. Established innovative process change, including resource sharing across underwriting teams (“One SiriusPoint”).

Dec 2020 - Oct 2022

Founding Board Member

St. Petersburg, Florida, Us

VYRD is a new entrant in the Florida homeowners insurance market (Q1 2022), jointly backed by SiriusPoint and Bolttech, providing much-needed capacity to the market. Led by industry veteran David Howard, VYRD is building an innovative, customer-centric experience with embedded IoT.

Nov 2021 - Aug 2023

Partner

Us

Leadership roles included Head of Global Insurance Strategy practice, co-lead of Insurance Risk practice, co-lead of Insurance Underwriting practice. In 2011, I co-founded Ingenuity, McKinsey’s insurance Advanced Analytics & Artificial Intelligence team. Ingenuity includes data scientists, analysts, and translators, backed by McKinsey’s proprietary analytics platforms, to build and execute analytics applications for P&C and Life insurance companies. My clients included P&C insurance companies, Life/Annuity companies, Reinsurers, and a variety of other industry participants: Brokers, TPAs, Insurtech, and Public Sector. Within Commercial P&C, I focused on underwriting turnaround and transformation. In addition to insurance, my clients included retail banking, payments, and fintech companies. My experience spanned several regions globally, including the London Market and Europe. I was part of McKinsey’s Pittsburgh, Brussels, Dubai, and Lagos (Nigeria) offices. I was the recipient of the Inspirational Leadership Award in Pittsburgh in 2012 and 2018.

2006 - 2021 ~15 yrs
Team & coworkers

Colleagues at Argo Group

Other employees you can reach at argolimited.com. View company contacts for 1 employees →

3 education records

Ari Chester education

Mba, Strategy And Finance

The Wharton School

Exchange Program (Post-Wharton), Singapore Campus

Insead

Bachelor Of Fine Arts - Bfa

New York University
FAQ

Frequently asked questions about Ari Chester

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

What company does Ari Chester work for?

Ari Chester works for Argo Group.

What is Ari Chester's role at Argo Group?

Ari Chester is listed as Head of Specialty at Argo Group at Argo Group.

What is Ari Chester's email address?

AeroLeads has found 1 work email signal at @siriusgroup.com for Ari Chester at Argo Group.

What is Ari Chester's phone number?

AeroLeads has found 1 phone signal(s) with area code 412 for Ari Chester at Argo Group.

Where is Ari Chester based?

Ari Chester is based in New York, United States while working with Argo Group.

What companies has Ari Chester worked for?

Ari Chester has worked for Argo Group, Butter Insurance, Tremor Technologies, Inc., Siriuspoint, and Vyrd.

Who are Ari Chester's colleagues at Argo Group?

Ari Chester's colleagues at Argo Group include Riley Lomax, Shannon Thompson Rplu, Sean Nelson, Ruth Cutuli, Aic, Wcls, and Cassandra (Cassie) Wideman.

How can I contact Ari Chester?

You can use AeroLeads to view verified contact signals for Ari Chester at Argo Group, including work email, phone, and LinkedIn data when available.

What schools did Ari Chester attend?

Ari Chester holds Mba, Strategy And Finance from The Wharton School.

What skills is Ari Chester known for?

Ari Chester is listed with skills including Corporate Development, Strategic Planning, Leadership, Strategy, Business Development, Valuation, Financial Modeling, and Management Consulting.

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