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Original filing (PDF)20250925152325NAL0010673667001
MAINSTREAM ENGINEERING CORPORATION
Form 5500
FILING_RECEIVED
MAINSTREAM ENGINEERING CORPORATION 401(K) SAVINGS PLAN
401(k) retirement plan
Signals · 1
No recordkeeper disclosed
Active participants
173
Accounts w/ balance
180
Plan assets (EOY)
$16.4M
Net assets (EOY)
$16.4M
How this plan invests
This plan
28 pooled trusts
Schedule D
30 securities
funds · stocks · CUSIPs
Holdings are itemized directly on this plan's Schedule of Assets, below.
Plan health score (directional)
98
/ 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
100
Total plan cost
100
Vendor stack
80
Participation health
100
Knocking points off
- No recordkeeper disclosed on Schedule C.
Helping the score
- Below-peer total fees (10 bps vs 29 bps peer median).
Decision-maker contacts
CFO / Head of HR / Benefits Manager — verified email + LinkedIn for MAINSTREAM ENGINEERING CORPORATION.
Plan sponsor
Name
MAINSTREAM ENGINEERING CORPORATION
EIN
59-2744408
Address
200 YELLOW PL · ROCKLEDGE, FL · 329555327
Phone
(321) 631-3550
Industry
Manufacturingsee all
Plan administrator
Same as plan sponsor.
Plan characteristics
Plan number
002
Plan year
2024
Plan year begin
2024-01-01
Tax period
2024-12-31
Filed
2025-09-25
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)
Auditor
CARR, RIGGS & INGRAM L.L.C.
Trustee / custodian
—
Trustee phone
—
Service providers (Schedule C)
1 rowsTPA / Administrator
1| Name | EIN | Location | Relation | Direct comp | Indirect comp |
|---|---|---|---|---|---|
| PRINCIPAL LIFE INSURANCE COMPANY | 42-0127290 | — | CONTRACT ADMINISTRATOR | $17K | — |
Investments
17 direct securities · 28 pooled funds· $24.8M(100% of reported assets)
Rows tagged as a trust or pooled fund hold many underlying securities. Click one to drill into its own Schedule of Assets — where the individual funds, shares, and CUSIPs live.
Pooled Separate Account
$16.1M
28 holdings
Uncategorized
$8.7M
17 holdings
| PI | Investment | Type | Shares / units | Cost | Current value | % of plan |
|---|---|---|---|---|---|---|
| PRIN LGCAP S&P 500 INDEX SA-I2 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 016 | Pooled Separate Account | — | — | $2.9M | 17.6% | |
| Prin LifeTm 2030 Sep Acct-I3 | — | — | $0 | $2.9M | 17.6% | |
| Participant Loans | — | — | $0 | $1.8M | 11.2% | |
| PRIN MIDCAP SEP ACCT-I2 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 020 | Pooled Separate Account | — | — | $1.8M | 11.2% | |
| PRIN LIFETM 2050 SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 079 | Pooled Separate Account | — | $0 | $1.8M | 11.0% | |
| PRIN LIFETM 2040 SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 078 | Pooled Separate Account | — | $0 | $1.2M | 7.4% | |
| PRIN BLUE CHIP SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 133 | Pooled Separate Account | — | $0 | $1.2M | 7.1% | |
| PRIN LIFETM 2030 SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 077 | Pooled Separate Account | — | $0 | $905K | 5.5% | |
| Prin SmallCap Value II SA-I2 | — | — | $0 | $821K | 5.0% | |
| PRINCIPAL SMALLCAP SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 029 | Pooled Separate Account | — | — | $821K | 5.0% | |
| PRIN LIFETM 2060 SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 130 | Pooled Separate Account | — | $0 | $765K | 4.7% | |
| PRIN LIQUID ASSETS SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 024 | Pooled Separate Account | — | $0 | $572K | 3.5% | |
| PRIN DIV INTL SA-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 015 | Pooled Separate Account | — | — | $555K | 3.4% | |
| Prin Fin Grp, Inc. Stock SA-R6 | — | — | $0 | $555K | 3.4% | |
| Prin MidCap Value I SA-I3 | — | — | $0 | $381K | 2.3% | |
| PRIN SMCAP S&P 600 INDEX SA-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 028 | Pooled Separate Account | — | — | $381K | 2.3% | |
| PRIN MIDCAP S&P 400 IDX SA-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 023 | Pooled Separate Account | — | — | $372K | 2.3% | |
| Prin Liquid Assets Sep Acct-I3 | — | — | $0 | $372K | 2.3% | |
| PRIN U.S. PROPERTY SA-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 027 | Pooled Separate Account | — | $0 | $350K | 2.1% | |
| PRIN LIFETM 2020 SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 076 | Pooled Separate Account | — | — | $314K | 1.9% | |
| Prin LgCap S&P 500 Index SA-I2 | — | — | $0 | $314K | 1.9% | |
| PRIN GOVT&HQBND SEP ACCT-I2 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 007 | Pooled Separate Account | — | $0 | $293K | 1.8% | |
| PRIN LARGECAP GROWTH I SA-I2 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 066 | Pooled Separate Account | — | $0 | $263K | 1.6% | |
| PRIN SMALLCAP GROWTH I SA-I2 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 070 | Pooled Separate Account | — | — | $246K | 1.5% | |
| Prin MidCap S&P 400 Idx SA-I3 | — | — | $0 | $246K | 1.5% | |
| PRIN INTL SMALLCAP SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 014 | Pooled Separate Account | — | $0 | $224K | 1.4% | |
| Prin Blue Chip Sep Acct-I3 | — | — | $0 | $222K | 1.4% | |
| Prin MidCap Sep Acct-I2 | — | — | $0 | $216K | 1.3% | |
| PRIN SMALLCAP VALUE II SA-I2 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 096 | Pooled Separate Account | — | — | $216K | 1.3% | |
| PRIN CAPITAL APPR SA-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 119 | Pooled Separate Account | — | — | $178K | 1.1% | |
| Prin Div Intl SA-I3 | — | — | $0 | $178K | 1.1% | |
| PRIN LIFETM 2070 SEP ACCT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 179 | Pooled Separate Account | — | $0 | $167K | 1.0% | |
| Prin Core Plus Bond Sep Act-I3 | — | — | $0 | $160K | 1.0% | |
| Prin Equity Income SA-I3 | — | — | $0 | $144K | 0.9% | |
| PRIN CORE PLUS BOND SEP ACT-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 005 | Pooled Separate Account | — | — | $144K | 0.9% | |
| Prin SmCap S&P 600 Index SA-I3 | — | — | $0 | $138K | 0.8% | |
| PRIN LARGECAP VALUE III SA-I2 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 068 | Pooled Separate Account | — | $0 | $130K | 0.8% | |
| PRIN MIDCAP GROWTH III SA-I2 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 026 | Pooled Separate Account | — | — | $105K | 0.6% | |
| Prin LifeTm 2070 Sep Acct-I3 | — | — | $0 | $105K | 0.6% | |
| PRIN MIDCAP VALUE I SA-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 043 | Pooled Separate Account | — | $0 | $104K | 0.6% | |
| PRIN LIFETM STR INC SA-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 080 | Pooled Separate Account | — | — | $56K | 0.3% | |
| Prin Capital Appr SA-I3 | — | — | $0 | $56K | 0.3% | |
| Insurance Company GeneralGuaranteed Interest | — | — | $0 | $32K | 0.2% | |
| PRIN EQUITY INCOME SA-I3 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 120 | Pooled Separate Account | — | — | $32K | 0.2% | |
| PRIN FIN GRP, INC. STOCK SA-R6 PRINCIPAL LIFE INSURANCE COMPANY · EIN 42-0127290 / PN 086 | Pooled Separate Account | — | — | $2K | <0.1% |
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