How big is Flatiron Bio, LLC's plan?

Flatiron Bio, LLC's plan reported $278K in assets and 2 participants for 2025.

Original filing (PDF)20260427220841NAL0005147075005

Flatiron Bio, LLC

Name: Flatiron Bio, LLC — Flatiron Bio, LLC 401(k) Plan, Form 5500 (2025)
Creator: Flatiron Bio, LLC
License: https://www.usa.gov/government-works

Form 5500-SF

FILING_RECEIVED

Flatiron Bio, LLC 401(k) Plan

401(k) retirement plan · Flatiron Bio, LLC's Flatiron Bio, LLC 401(k) Plan held $278K in plan assets for 2 participants in 2025.

Active participants

Accounts w/ balance

Plan assets (EOY)

$278K

Net assets (EOY)

$278K

People on this filing

Elantha Barry signed Flatiron Bio, LLC's 2025 Form 5500 as plan administrator.

Elantha Barry — Plan Administrator — Form 5500 signer

Get verified email & phone for these signers

Signer names are public record from the Form 5500 e-signature.

Plan identifiers

Flatiron Bio, LLC's EIN is 83-0900994.

EIN 83-0900994

Plan number 001

Plan year 2025

ACK ID 20260427220841NAL0005147075005

Official Form 5500 document

Download the official 2025 Form 5500 (PDF) for Flatiron Bio, LLC from the U.S. Department of Labor's EFAST2 system.

Download the official 2025 Form 5500 (PDF)

Plan features

Flatiron Bio, LLC's plan includes profit-sharing, ERISA 404(c) participant direction, a 401(k) feature, automatic enrollment, a default investment (QDIA).

Decision-maker contacts

One unlock reveals every key decision-maker — plan signer, CFO, HR & Benefits — with verified email + LinkedIn for FLATIRON BIO, LLC.

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Plan health score

Top-tier plan health

Directional indicator from public Form 5500 data — compliance & integrity, total plan cost, participant health and vendor stack, benchmarked against same-size peers. Not a fiduciary tool. Based on 70% of scoring inputs for this filing.

Compliance & integrity

100

Total plan cost

n/a

Plan health

Vendor & structure

100

Helping the score

Cost not scored — no comparable Schedule H expense data for this cohort.
High account-holder ratio — balance-holders per active participant in the top 15% of peers (94th percentile).

Plan sponsor

Name

FLATIRON BIO, LLC

EIN

all filings

Address

228 COWPER STREET · PALO ALTO, CA · 94301

Phone

(650) 766-9531

Industry

Professional & Technical Services

Plan administrator