Assets by plan
Share of aggregate retirement assets
Sponsor portfolio
PETER H. MATTSON & CO., INC.
EIN 94-2456738Professional, Scientific, and Technical ServicesLatest filing 2025
Plans
2
Retirement
2
$38.2M assets
Welfare
0
Participants
164
343 HATCH DRIVE - FOSTER CITY, CA 94404650-574-8824
Plans on this EIN
2 filingsRetirement portfolio analytics
2 plans aggregated / $38.2M assets / 164 participantsParticipants by plan
Active + retired + deferred vested
Plan deep-dives
Per-plan teasers. The full analytics (fees vs peers, audit grade, trajectory, counterparties) live on each plan detail page.Retirement#003
MATTSON & CO. 401(K) SAVINGS PLAN
401k
Assets$32.1M
Participants78
Inside the deep dive
Fees vs peersAudit gradeAsset trajectoryContributionsSch C providers
Open plan deep dive
Retirement#002
MATTSON & CO. EMPLOYEE STOCK OWNERSHIP PLAN
ESOP
Assets$6.1M
Participants86
Inside the deep dive
Fees vs peersAudit gradeAsset trajectoryContributionsSch C providers
Open plan deep dive
Retirement plans2
| Plan # | Name | Type | Assets | Participants | Latest year | |
|---|---|---|---|---|---|---|
| 003 | MATTSON & CO. 401(K) SAVINGS PLAN | 401k | $32.1M | 78 | 2025 | |
| 002 | MATTSON & CO. EMPLOYEE STOCK OWNERSHIP PLAN | ESOP | $6.1M | 86 | 2024 |
Retirement plans