Coverage by line
Premium dollars by benefit type (bundled lines overlap)
- Health$2.3M
- Dental$2.3M
- Prescription drug$2.3M
- Other$232K
- Life$205K
- Short-term disability$192K
- +2 more
Sponsor portfolio
MERSANA THERAPEUTICS, INC.
EIN 04-3562403biotechnologyLatest filing 2025
Plans
2
Retirement
1
$32.6M assets
Welfare
1
$2.5M premiums
Participants
252
1800 SIERRA POINT PARKWAY, SUITE 200 - BRISBANE, CA 94005617-715-8200mersana.comLinkedIn51-200 employeesbiotechnology
Plans on this EIN
2 filingsBenefits portfolio analytics
1 plan / $2.5M premiums / 367 covered livesCarrier market share
Premium dollars by Schedule A carrier
90%top
- BLUE CROSS OF CALIFORNIA90%
- UNUM LIFE INSURANCE COMPANY OF AMERICA8%
- AMERICAN HERITAGE LIFE INSURANCE COMPANY1%
- EYEMED VISION CARE1%
Broker market share
Schedule A broker compensation
98%top
- MARSH & MCLENNAN AGENCY LLC98%
- GALLAGHER BENEFIT SERVICES, INC.1%
- TRION GROUP, INC.1%
Plan deep-dives
Per-plan teasers. The full analytics (fees vs peers, audit grade, trajectory, counterparties) live on each plan detail page.Retirement#001
MERSANA THERAPEUTICS, INC. 401(K) PROFIT SHARING PLAN TRUST
401k
Assets$32.6M
Participants184
Inside the deep dive
Fees vs peersAudit gradeAsset trajectoryContributionsSch C providers
Open plan deep dive
Welfare#501
MERSANA THERAPEUTICS GROUP HEALTH & WELFARE PLAN
Fully Insured - BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC.
Premiums$2.5M
Covered lives367
Inside the deep dive
Premium breakdownCarriersBrokersCoverage stats
Open plan deep dive
Retirement plans1
| Plan # | Name | Type | Assets | Participants | Latest year | |
|---|---|---|---|---|---|---|
| 001 | MERSANA THERAPEUTICS, INC. 401(K) PROFIT SHARING PLAN TRUST | 401k | $32.6M | 184 | 2025 |
Welfare plans1
| Plan # | Name | Funding | Carrier | Premiums | Covered | Latest year | |
|---|---|---|---|---|---|---|---|
| 501 | MERSANA THERAPEUTICS GROUP HEALTH & WELFARE PLAN | Fully Insured | BLUE CROSS BLUE SHIELD OF MASSACHUSETTS, INC. | $2.5M | 367 | 2025 |
Retirement plans
Welfare plans