Retirement plan

SENSEI BIOTHERAPEUTICS 401(K) PLAN

Name: SENSEI BIO SUBSIDIARY, INC. - SENSEI BIOTHERAPEUTICS 401(K) PLAN (2025) Form 5500
Creator: SENSEI BIO SUBSIDIARY, INC.
License: https://www.dol.gov/general/disclaim
Keywords: Form 5500, ERISA, retirement plan, SENSEI BIOTHERAPEUTICS 401(K) PLAN, SENSEI BIO SUBSIDIARY, INC.

SENSEI BIO SUBSIDIARY, INC.EIN 52-2166155Plan #002PY 2025

1405 RESEARCH BLVD, SUITE 125 - ROCKVILLE, MD 20850240-243-8000

Prospect flagsHigh feesWind-down / frozen

How to read this page

Total assets (EOY)

$4.4M

+0.4% from 2024

Total participants

-28.9% from 2024

Average account balance

$137,810

+41.2% from 2024

Annual return

39.67%

+23.83 pp from 2024

Benchmarks

See 18,217 peers

Peer group

Industry42 - Wholesale Trade

Plan typeDefined contribution

Participants<25

Cohort18,217 peers

Snapshot2025

Free accounts unlock saves, downloads, and 3-year history.

Analytics

Total assets (EOY)

Plan-year ending balance

$4.41M

Not enough data

1 years with asset history on file

Average account balance

Total assets / participants with a balance (line 6g)

$138K

Not enough data

1 years with per-participant data

Participants with account balance

Stacked by status: active / separated vested / retired or beneficiary. Total = line 6g.

Not enough data

1 years with headcount on file

Eligible Participants and Participation

Bars: eligible actives (line 6a). Line: derived rate = active employees with a balance / 6a.

100.0%

Not enough data

1 years with eligibility data

Contributions (total)

Employer and participant dollars contributed each year

$472K

Not enough data

1 years with contributions on file

Contributions per participant

Average employer and participant contribution per enrolled participant

$94K

Not enough data

1 years with per-participant contribution data

Asset flow

BOY + contributions + return - distributions = EOY

Year

Annual return

Diverging bars; negative years highlighted

+39.67%

Not enough data

1 years with return on file

Admin fee / account holder

Total admin expenses / participants with a balance (line 6g)

$68883

Not enough data

1 years with admin cost on file

Asset composition

Cash / stocks / bonds / mutual funds / real estate / loans over time

Not enough data

0 years with F_SCH_H allocation on file

Free accounts unlock saves, downloads, and 3-year history.

Service providers

Providers data not reported

Schedule C was not filed on this plan's most recent Form 5500, so no compensated service providers are available to display.

Plan features & details

Pension benefit codes2G2J2K2S2T2E2F3D

Plan features

2E
Profit-sharing
Profit-sharing plan.
2F
ERISA section 404(c) plan
This plan or any part of it is intended to meet the conditions of 29 CFR 2550.404c-1 (shifting investment responsibility to participants).
2G
Total participant-directed account plan
Participants have the opportunity to direct the investment of all of the assets allocated to their individual accounts regardless of whether 29 CFR 2550.404c-1 is intended to be met.
2J
Code section 401(k) feature
Cash or deferred arrangement described in Code section 401(k) that is part of a qualified defined contribution plan under which employees may elect to defer part of their compensation or receive these amounts in cash.
2K
Code section 401(m) arrangement
Employee contributions are allocated to separate accounts under the plan or employer contributions are based in whole or in part on employee deferrals or contributions to the plan. Not applicable to 401(k) plans with only QNECs and/or QMACs or to 403(b)(1) 403(b)(7) or 408 arrangements.
2S
Automatic enrollment
Plan provides for automatic enrollment in plan that has elective contributions deducted from payroll.
2T
Default investment account
Total or partial participant-directed account plan where plan uses a default investment account for participants who fail to direct assets in their account.
3D
Pre-approved pension plan
A master prototype or volume submitter plan that is the subject of a favorable opinion or advisory letter from the IRS.

Opportunity flags

2 tripped

OpportunityHigh fees
Administrative expenses exceed $300 per participant per year - possible fee-review opportunity. (Recordkeeping / audit / legal; excludes investment management.)
InformationalWind-down / frozen
Plan appears closed to new enrollment or frozen - balance-holders far exceed active participants, or the plan reports active distributions with no inflows. Exclude from peer benchmarks.

Expense breakdown

Schedule H Part II

Admin total

$2.2M

$440850 / participant

Other / not subdivided$2M100.0%

% of EOY assets

49.984%

all-in expense ratio

Categories reported

0 / 9

subdivided buckets used

Audit opinion

Schedule H Part III

No opinion code on file for this filing.

Auditor firm: (not reported)
Auditor EIN: -
Audit fees: (not subdivided)
Opinion code: -

Metric

This plan

Peer set

Industry

Size

Avg account balance

$137,810

$178,174-22.7%

$156,181-11.8%

$137,256+0.4%

Participation rate

100.0%

82.0%+18.0pp

78.8%+21.2pp

80.0%+20.0pp

Annual return

39.67%

84.19%-44.5pp

64.87%-25.2pp

220.34%-180.7pp

Employer contribution / active EE

$32,096

$4,972+545.6%

$4,294+647.5%

$4,156+672.3%

Participant deferral / active EE

$62,369

$6,888+805.5%

$6,132+917.1%

$6,407+873.5%

Admin fee / account holder

$68,883

$17,404+295.8%

$14,586+372.2%

$12,270+461.4%

SENSEI BIOTHERAPEUTICS 401(K) PLAN

Summary metrics

Benchmarksi

Analytics

Service providersi

Plan features & details

Opportunity flagsi

Expense breakdowni

Audit opinioni

SENSEI BIOTHERAPEUTICS 401(K) PLAN

Summary metrics

Benchmarksi

Analytics

Service providersi

Plan features & details

Opportunity flagsi

Expense breakdowni

Audit opinioni

Benchmarks

Service providers

Opportunity flags

Expense breakdown

Audit opinion

Benchmarks

Service providers

Opportunity flags

Expense breakdown

Audit opinion