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UPSTREAM BIO, INC. — Form 5500 (2024) | Form 5500 Search
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Original filing (PDF)
20250604060747NAL0008173411001
UPSTREAM BIO, INC.
Form 5500-SF
FILING_RECEIVED
UPSTREAM BIO, INC.
401(k) retirement plan
Active participants
42
Accounts w/ balance
41
Plan assets (EOY)
$2.6M
Net assets (EOY)
$2.6M
Plan health score (directional)
89
/ 100
Grade A
Top-tier plan health
Directional indicator computed from public Form 5500 data — compliance, concentration, cost, vendor stack and participation. Not a fiduciary tool.
Compliance & disclosures
100
Concentration risk
75
Total plan cost
75
Vendor stack
100
Participation health
Decision-maker contacts
CFO / Head of HR / Benefits Manager — verified email + LinkedIn for
UPSTREAM BIO, INC.
.
Find decision makers
Plan sponsor
Name
UPSTREAM BIO, INC.
EIN
38-4187694
Address
890 WINTER STREET · SUITE 200 · WALTHAM, MA · 02154
Phone
(978) 835-8608
Industry
Professional & Technical Services
see all
Plan administrator
Same as plan sponsor.
Plan characteristics
Plan number
001
Plan year
2024
Plan year begin
2024-01-01
Tax period
2024-12-31
Filed
2025-06-04
Pension benefit codes
2E · Profit-sharing
2F · ERISA section 404(c)
2G · Total participant-directed accounts
2J · 401(k) feature
2K · 401(m) arrangement
2T · Default investment account (QDIA)
3D · Pre-approved plan (master / prototype / VS)
Audit & trust (Schedule H)
Service providers (Schedule C)
Small plans don't disclose service providers
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100
Helping the score
Concentration not scored — Schedule of Assets PDF not yet parsed for this plan.
No Schedule C compensation disclosed — likely a small plan or unbundled.
Auditor
—
Trustee / custodian
—
Trustee phone
—
Small plan (5500-SF) — Schedule H data not available.
SATSUMA PHARMACEUTICALS, INC.
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