Mark Joseph Mesco
Investment Adviser Representative at MML Investors Services, LLC
Professional summary
Compiled by AdvisorFinder from public regulatory records. This advisor has not provided a personal biography.
Mark Joseph Mesco is an investment adviser representative with MML Investors Services, LLC in New Castle, DE, where they have been registered since 2025, the year they entered the securities industry. They have passed 3 industry qualification exams, including the Series 66 (combined investment adviser and state securities agent) and Series 7 (general securities representative). They are registered to provide investment advice in Delaware.
Office
Advisors at this office: 19
Branch office as filed with FINRA, counting current advisors in the directory who work there.
Registrations & licenses
- Investment adviser:
- Delaware
- Broker:
9 states and territories
Colorado, Delaware, Florida, Maine, Maryland, New Jersey, Pennsylvania, South Carolina, Virginia
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.
- Mass Mutual Life Insurance CompanyNov 2024 – no end date reportedNew Castle, DE
- MML Investors Services LLCJan 2025 – no end date reportedNew Castle, DE
- Accurant BiotechJan 2023 – May 2023Cranbury, NJ
- Accurant BiotechMay 2023 – Aug 2023Cranbury, NJ
- Accurant BiotechAug 2023 – Nov 2024Cranbury, NJ
- Wenonah Swim ClubApr 2022 – Oct 2022Wenonah, NJ
- Mother of Divine Grace SchoolJan 2015 – Jun 2018Mullica Hill, NJ
- Rowan UniversitySep 2018 – May 2023Glassboro, NJ
Official records & sources
Data as of August 10, 2026 · Source: SEC IAPD & FINRA BrokerCheck
About MML Investors Services, LLC
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
- Estimated blended rate
- 0.01
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
$25B+
- Firm disclosures (Form ADV)
- Disciplinary history reportedVerify on SEC IAPD
- Advisors listed on AdvisorFinder:
- 5,037
- Offices listed on AdvisorFinder:
- 26
- Main office:
- Springfield, MA
- SEC file number:
- 801-44264
Counts reflect AdvisorFinder directory coverage, not necessarily the firm's complete network.
Form ADV data as of September 3, 2026
View full firm profileOther advisors at MML Investors Services, LLC
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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. Mark Joseph Mesco 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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