William Theiss

William Theiss: Email & Phone Number

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Incoming 2027 Investment Banking Summer Analyst at Citi|New York, New York, United States

Position:

Incoming 2027 Investment Banking Summer Analyst at Citi

Location:

New York, New York, United States

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Last updated: 2026-04-30
Updated: 2026-04-30

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Work Experience 3 years

Incoming 2027 Investment Banking Summer Analyst at Citi

Jan 2026 - Current

Incoming Summer 2026 Analyst at Altes

Apr 2026 - Current

Sector Director at Rice Undergraduate Investment Fund

May 2025 - Current

Summer 2025 FP&A Intern at Avantor

May 2025 - Aug 2025

Research Analyst at One Health Insurance

May 2023 - Aug 2023

William Theiss started working in 2023, then the employee has changed 4 companies and 4 jobs. On average, William Theiss works for one company for 5 months.

Their professional focus is Competitive Analysis, Corporate Finance, and Data Analysis across 3 core areas.

Education

Bachelor's degree at Rice University

The Taft School

Grace Church School

Frequently Asked Questions

What is William Theiss's email address?

SignalHire found a verified business email address for William Theiss: w******s@citigroup.com.

What is William Theiss's phone number?

SignalHire found a verified phone number for William Theiss: +1-***-***-7583.

How do I contact William Theiss at Citi?

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What is William Theiss's professional background?

William Theiss has 3 years of professional experience. They have held roles including Incoming Summer 2026 Analyst, Sector Director, and Summer 2025 FP&A Intern at companies such as Altes, Rice Undergraduate Investment Fund, and Avantor. Their education includes Bachelor's degree from Rice University, and The Taft School.

Is William Theiss's contact information up to date?

Yes. William Theiss's SignalHire profile was last updated on 30 April 2026, reflecting their current position as Incoming 2027 Investment Banking Summer Analyst at Citi in New York, New York, United States.

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