John Ellsworth

At Four Twenty Seven, John Supports the Director of Operations with the Operations and Human Resources functions of the organization.

John has seven years of experience as an office manager and 15 years of experience in marketing and events in the educational non-profit sector.

Yang Jing

At Four Twenty Seven, Yang implements efficient processes and policies in compliance with US and international accounting standards and Moody’s accounting policies. Yang is also responsible for accounting closes, Financial Planning & Analysis (FP&A) activities and liaising with Moody’s.

Yang is a Senior Vice President in Accounting for Moody’s, where she works with business leaders to ensure compliance with SEC and international accounting regulations while providing near real-time financial data to enable executive decision-making. Prior to Moody’s, Yang worked in various accounting and operational roles with UTStarcom and other startups in the Bay Area.

Sara O’Connell

At Four Twenty Seven, Sara keeps operations running effectively and supports business development and product management.

Sara has over eight years of operations management experience in the technology sector and is passionate about building strong foundations and improving company systems. Previously, she held operational roles at startups ApplePie Capital and Pixalate.