Assets by plan
Share of aggregate retirement assets
Filings through .
Peter H. Mattson & Co., Inc.
EIN 94-2456738Professional, Scientific, and Technical ServicesLatest filing 2025
Plans
2
Retirement
2
$38.7M assets
Health & Benefits
0
Participants
159
343 HATCH DR - FOSTER CITY, CA 94404650-574-8824
Plans on this EIN
2 filingsRetirement portfolio analytics
2 plans aggregated / $38.7M assets / 159 participants
Participants by plan
Active + retired + deferred vested
Plan summaries
Each card links to its plan page. The plan page shows fees vs peers, audit grade, history and counterparties.
Retirement#003
MATTSON & CO. 401(K) SAVINGS PLAN
401(k)
Assets$32.1M
Participants78
On the plan page
Fees vs peersAudit gradeAsset trajectoryContributionsSch C providers
Open plan
Retirement#002
MATTSON & CO. EMPLOYEE STOCK OWNERSHIP PLAN
ESOP
Assets$6.5M
Participants81
On the plan page
Fees vs peersAudit gradeAsset trajectoryContributionsSch C providers
Open plan
Retirement plans
2 plans on this EIN
| Plan | Name | Type | Assets | Participants | Latest year |
|---|---|---|---|---|---|
| #003 | MATTSON & CO. 401(K) SAVINGS PLAN | 401(k) | $32.1M | 78 | 2025 |
| #002 | MATTSON & CO. EMPLOYEE STOCK OWNERSHIP PLAN | ESOP | $6.5M | 81 | 2025 |
- #003 · 401(k) · 202578
- #002 · ESOP · 202581
Retirement plans