Directional indicator from public Form 5500 data — compliance & integrity, total plan cost, participant health and vendor stack, benchmarked against same-size peers. Not a fiduciary tool. Based on 70% of scoring inputs for this filing.
Compliance & integrity
100
Total plan cost
n/a
Plan health
87
Vendor & structure
100
Helping the score
Cost not scored — no comparable Schedule H expense data for this cohort.
High account-holder ratio — balance-holders per active participant in the top 15% of peers (85th percentile).
Decision-maker contacts
One unlock reveals every key decision-maker — plan signer, CFO, HR & Benefits — with verified email + LinkedIn for DIABLO THERMAL SYSTEMS, INC..
Plan sponsor
Name
DIABLO THERMAL SYSTEMS, INC.
EIN
47-0883059
Address
1000 CASTLE ROCK RD. · PO BOX 30582 · WALNUT CREEK, CA · 94598
Phone
(925) 979-1300
Industry
Plumbing, Heating, AC Contractors· Constructionsee all
Plan administrator
Name
GUIDELINE RK, LLC
EIN
30-1418950
City
BURLINGAME, CA
Phone
(888) 228-3491
Plan characteristics
Plan number
001
Plan year
2024
Plan year begin
2024-01-01
Tax period
2024-12-31
Filed
2025-04-12
Pension benefit codes
2E · Profit-sharing
2F · ERISA section 404(c)
2G · Total participant-directed accounts
2J · 401(k) feature
2K · 401(m) arrangement
2S · Automatic enrollment
2T · Default investment account (QDIA)
3D · Pre-approved plan (master / prototype / VS)
Service providers (Schedule C)
Small plans don't disclose service providers
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