Flagship Pioneering 401(k) Profit Sharing Plan

What the Filing Says About Flagship Pioneering 401(k) Profit Sharing Plan

Flagship Pioneering 401(k) Profit Sharing Plan is a 401(k) retirement plan sponsored by Flagship Pioneering, Inc., headquartered in Massachusetts. As of the 2023 Form 5500 filing, the plan reports $48M in total end-of-year assets and covers 357 participants across the Professional & Technical Services industry. The sponsor's EIN on file with the U.S. Department of Labor is 752992246, and the plan has been effective since 2002-09-01. Its filing status is currently FILING RECEIVED.

Year over year, total assets moved from $33M at the beginning of 2023 to $48M at year-end — a gain of 42.8%. Net assets (after liabilities) closed the year at $48M, with reported net income of $14M driven by investment returns, contributions received, and benefit payments during the period. These figures reflect what the plan administrator certified on Schedule H or Schedule I of the Form 5500 annual return and can be compared against 2 prior plan-year filings from the same sponsor shown below.

Asset totals and participant counts reflect a single plan year snapshot and can change materially with market conditions, plan mergers, or workforce changes. Fields such as "net income" include both realized investment performance and contribution/distribution flows — a single-year figure does not by itself indicate plan health or participant outcomes. This page summarizes public DOL disclosures for research and educational purposes only and is not retirement, tax, legal, or financial advice. Before making decisions about your own retirement benefits or evaluating an employer's plan, verify the underlying filing directly via the DOL EFAST2 system and consult a qualified professional.