William G Sininger
Investment Adviser Representative at SPC
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
William G. Sininger is an investment adviser representative with SPC in Grand Rapids, MI, where they have been registered since 2023. They have worked in the securities industry since 2015 and were previously registered with LPL Financial LLC. They have passed 7 industry qualification exams, including the Series 66 (combined investment adviser and state securities agent), Series 7 (general securities representative), and Series 24 (general securities principal). They are registered to provide investment advice in Michigan.
Office
Advisors at this office: 34
Branch office as filed with FINRA, counting current advisors in the directory who work there.
Registrations & licenses
- Investment adviser:
- Michigan
- Broker:
1 state or territory
Michigan
Registration requirements vary by state and service. Contact the advisor's firm to confirm whether they can serve you.
Financial-firm registration history
Registration history as reported to FINRA, most recent first.
Reported employment history
Employment the advisor reported on their SEC/FINRA filings, as of October 8, 2026. It may not be a complete history.
- Sigma Financial CorporationJan 2015 – Dec 2019Ann Arbor, MI
- Parkland SecuritiesAug 2015 – Dec 2019Ann Arbor, MI
- SPCMar 2017 – Dec 2019Ann Arbor, MI
- LPL Financial LLCDec 2019 – Jan 2023Fort Mill, SC
- Sigma Financial CompanyJan 2023 – no end date reportedAnn Arbor, MI
- SPCJan 2023 – no end date reportedAnn Arbor, MI
Official records & sources
Data as of August 11, 2026 · Source: SEC IAPD & FINRA BrokerCheck
About SPC
These details describe the firm overall. Individual advisors' services, clients, and fees may differ.
Fee arrangements the firm reports
- Percentage of assets under management
- Hourly
- Fixed fee
- Other
- Firm account minimum
- $5,500 (waivable)
- First $500,0002.50%
- $500,001 - $750,0001.75%
- $750,001 - $1,000,0001.50%
- Greater than $1,000,0001.25%
Arrangements the firm reports on its Form ADV; this advisor may not charge every fee listed. Estimated from the firm's Form ADV — individual terms may differ. Not a quote.
Services the firm offers
Client types the firm serves
Firm assets under management
$5B–$25B
- Firm disclosures (Form ADV)
- Disciplinary history reportedVerify on SEC IAPD
- Advisors listed on AdvisorFinder:
- 473
- Offices listed on AdvisorFinder:
- 24
- Main office:
- Ann Arbor, MI
- SEC file number:
- 801-20404
Counts reflect AdvisorFinder directory coverage, not necessarily the firm's complete network.
Form ADV data as of May 7, 2026
View full firm profileOther advisors at SPC
Showing 12 of 473 in the directory
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This profile was compiled and published by AdvisorFinder as editorial content using publicly available information from the SEC's IAPD database and FINRA BrokerCheck. William G Sininger has not reviewed, approved, or endorsed this profile and is not responsible for its accuracy. Regulatory records change over time — always verify the current record directly on BrokerCheck or SEC.gov before making any decision. AdvisorFinder may be compensated for referrals generated through this page.
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