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Sponsor portfolio

SERES THERAPEUTICS, INC.

EIN 27-4326290-biotechnology-Latest filing 2025
Plans
2
Retirement
1
$43.6M assets
Welfare
1
$2.2M premiums
Participants
449
101 CAMBRIDGE PARK DRIVE - CAMBRIDGE, MA 02140617-203-3398serestherapeutics.comLinkedIn201-500 employeesbiotechnology
Plans on this EIN
2 filings
#001401k-$43.6M - 337 part#501Fully Insured-$2.2M - 159 lives

Benefits portfolio analytics

1 plan / $2.2M premiums / 159 covered lives

Coverage by line

Premium dollars by benefit type (bundled lines overlap)

  • Health$2.2M
  • Dental$2.2M
  • Life$69K
  • Short-term disability$69K
  • Long-term disability$69K
  • Other$69K
  • +1 more
Total $2.2M7 rows

Carrier market share

Premium dollars by Schedule A carrier

Multi-vendor
96%top
  • BLUE CROSS OF CALIFORNIA96%
  • PRUDENTIAL INSURANCE COMPANY OF AMERICA3%
  • VISION SERVICE PLAN1%
Total $2.2M3 slices

Broker market share

Schedule A broker compensation

Split broker
100%top
  • MARSH & MCLENNAN AGENCY LLC100%
  • IMG0%
Total $61K2 slices

Plan deep-dives

Per-plan teasers. The full analytics (fees vs peers, audit grade, trajectory, counterparties) live on each plan detail page.
Retirement#001

SERES THERAPEUTICS, INC. 401(K) PLAN

401k

Assets$43.6M
Participants337
Inside the deep dive
Fees vs peersAudit gradeAsset trajectoryContributionsSch C providers
Open plan deep dive
Welfare#501

SERES THERAPEUTICS, INC. WELFARE BENEFIT PLAN

Fully Insured - BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC.

Premiums$2.2M
Covered lives159
Inside the deep dive
Premium breakdownCarriersBrokersCoverage stats
Open plan deep dive

Retirement plans1

Plan #NameTypeAssetsParticipantsLatest year
001SERES THERAPEUTICS, INC. 401(K) PLAN401k$43.6M3372025

Welfare plans1

Plan #NameFundingCarrierPremiumsCoveredLatest year
501SERES THERAPEUTICS, INC. WELFARE BENEFIT PLANFully InsuredBLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC.$2.2M1592025
Retirement plans
Welfare plans
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