AUMdb
MS

Mason Street Advisors, Llc

SEC-registered Mutual Fund / Asset Manager · Large ($10B–$100B) CRD 114085 · SEC file 801-60721 · Milwaukee, WI
☆ Save with Pro ADV data as of Mar 31, 2026
Regulatory AUM
$39.1B
Discretionary
$39.1B
Clients
2
Avg AUM / client
$19.5B
Accounts
34
Employees
13

AUM over time

$19.3B $123B
Dec 2011 Dec 2025

Annual snapshots from Form ADV filings · as of Mar 31, 2026

Who they serve

Client typeClientsAUM% of AUM
Investment companies 2 $39.1B 100.0%

People (6)

NameRole / titleCredentialsWith firm sinceOwnership
Conmey, Michael, Jordan Chief Compliance Officer Jun 2020 (6y) Less than 5%
Drury, David, John Director Nov 2020 (6y) Less than 5%
Tomczak, Bonnie, Lynn Chairman Of The Board Nov 2021 (5y) Less than 5%
Schutte, Brent, Gregory Chief Investment Officer & Director Dec 2021 (5y) Less than 5%
Heistad, Andrew, John Treasurer Apr 2022 (4y) Less than 5%
Mikelson, Paul, Anthony President & Director Nov 2024 (2y) Less than 5%

Entity owners (Schedule A/B)

EntityTitle / statusSinceSch.Ownership
The Northwestern Mutual Life Insurance Company Parent Company May 2001 A 75% or more

Undisclosed: 0% – 25% of the firm is not attributable from the filed Schedule A bands.

Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.

Documents (1 archived)

FormPeriodSize
Form ADV (full filing) 03/31/2026 2.5 MB View · PDF · Source ↗

Archived copies of the firm's regulatory filings, versioned by content hash.

Disciplinary disclosures

Regulatory · Item 11.D(4) as of Nov 11, 2024

Allegations: ADVERTISEMENTS SENT BY AGENTS TO PROSPECTIVE CLIENTS MISREPRESENTED AGENT EXPERIENCE AND CLIENT BASE. Status: Final Sanction Detail: ADVERTISEMENTS SENT BY AGENTS TO PROSPECTIVE CLIENTS MISREPRESENTED AGENT EXPERIENCE AND CLIENT BASE. Summary: MATTER CLOSED ON AUGUST 24, 2023, WITH THE PAYMENT OF A FINE.

Regulatory · Item 11.D(2), 11.D(4) as of Nov 11, 2024

Allegations: THE WASHINGTON OFFICE OF INSURANCE COMMISSIONER DETERMINED THAT THE NORTHWESTERN MUTUAL LIFE INSURANCE COMPANY ACCEPTED ANNUITY APPLICATIONS FROM PRODUCERS THAT DID NOT COMPLETE THE REQUIRED ANNUITY SUITABILITY TRAINING. Status: Final Sanction Detail: THE NORTHWESTERN MUTUAL LIFE INSURANCE COMPANY CONSENTED TO AN ORDER AND PAID AN ADMINISTRATIVE PENALTY OF $2,000. Summary: MATTER CLOSED WITH THE PAYMENT OF THE ADMINISTRATIVE FINE.

Regulatory · Item 11.D(2), 11.D(4) as of Nov 11, 2024

Allegations: WASHINGTON OFFICE OF INSURANCE COMMISSIONER DETERMINED THAT THE NORTHWESTERN MUTUAL LIFE INSURANCE COMPANY WAS NOT PAYING THE CORRECT AMOUNT OF INTEREST ON SOME LIFE INSURANCE DEATH CLAIMS GOVERNED BY WASHINGTON LAW. Status: Final Sanction Detail: COMPANY PAID AN ADMINISTRATIVE PENALTY OF $20,000, AGREED TO MAKE AN ADDITIONAL INTEREST PAYMENT ON SOME WASHINGTON LIFE INSURANCE DEATH CLAIMS THAT WERE ORIGINALLY PAID BETWEEN JULY 1, 2016 AND APRIL 12, 2020, AND AGREED TO COMPLY WITH THE OFFICE OF INSURANCE COMMISSIONER'S INTERPRETATION OF THE INTEREST STATUTE FOR THE PAYMENT OF LIFE INSURANCE DEATH CLAIMS FROM APRIL 12, 2020 FORWARD. Summary: WASHINGTON LAW REQUIRES THE PAYMENT OF 8 PERCENT INTEREST ON LIFE INSURANCE DEATH CLAIMS FROM THE DATE OF DEATH TO THE DATE OF PAYMENT BUT DOES NOT SPECIFY HOW THE INTEREST IS CALCULATED. THE NORTHWESTERN MUTUAL LIFE INSURANCE COMPANY USED AN EFFECTIVE INTEREST CALCULATION BECAUSE IT CONSIDERED THIS METHOD TO BE A BETTER MEASURE OF THE TIME VALUE OF MONEY TO THE BENEFICIARY. WASHINGTON INTERPRETED THEIR STATUTE TO REQUIRE THAT ALL BENEFICIARIES ARE PAID INTEREST THAT IS AT LEAST EQUIVALENT TO SIMPLE INTEREST. ALTHOUGH THE COMPANY BELIEVES THAT ITS INTERPRETATION OF THE STATUTE WAS REASONABLE AND ITS CALCULATION METHOD PAID MORE INTEREST TO SOME BENEFICIARIES, THE COMPANY AGREED TO RESOLVE THE ADMINISTRATIVE ACTION TO AVOID THE COST AND EXPENSE OF FURTHER PROCEEDINGS.

Regulatory · Item 11.D(2), 11.D(4) as of Nov 11, 2024

Allegations: THE VERMONT DEPARTMENT OF FINANCIAL REGULATION ASSERTS THAT NORTHWESTERN MUTUAL DID NOT COMPLY WITH VERMONT LAW BY PAYING INTEREST BEFORE SETTLEMENT OF LIFE INSURANCE DEATH CLAIMS AT LESS THAN THE VERMONT STATUTORY RATE FOR CLAIMS IN WHICH THE BENEFICIARY RESIDED IN VERMONT AND THE LIFE INSURANCE POLICY WAS ISSUED FOR DELIVERY IN A STATE OTHER THAN VERMONT. THE ALLEGATIONS ARE DISPUTED. Status: Final Sanction Detail: PAYMENT OF A $287,000 ADMINISTRATIVE PENALTY. NORTHWESTERN MUTUAL MADE ADDITIONAL INTEREST PAYMENTS TO VERMONT BENEFICIARIES IN 2017. Summary: THE VERMONT INTEREST STATUTE DOES NOT STATE THE REQUIRED NEXUS TO VERMONT FOR THE STATUTE TO APPLY. NORTHWESTERN MUTUAL DISAGREES WITH THE CONTENTION THAT THE INTEREST STATUTE APPLIES TO A CLAIM PAID TO A VERMONT BENEFICIARY IF THE LIFE INSURANCE POLICY WAS ISSUED FOR DELIVERY IN A STATE OTHER THAN VERMONT. THE MATTER WAS RESOLVED TO AVOID THE COST AND UNCERTAINTY OF ADMINISTRATIVE PROCEEDINGS AND POTENTIAL JUDICIAL REVIEW.

Regulatory · Item 11.D(2), 11.D(4) as of Nov 11, 2024

Allegations: FINE, RESTITUTION AND INJUNCTION RELATED TO THE REPLACEMENT OF DEFERRED ANNUITY CONTRACTS WITH IMMEDIATE INCOME ANNUITY CONTRACTS Status: Final Sanction Detail: THE NEW YORK DEPARTMENT OF FINANCIAL SERVICES ("NYDFS") ISSUED A CONSENT ORDER AND IMPOSED A $26,000 FINE AGAINST REGISTRANT'S AFFILIATE, THE NORTHWESTERN MUTUAL INSURANCE COMPANY ("NORTHWESTERN MUTUAL"), RELATING TO A PRACTICE ARISING FROM THE REPLACEMENT OF DEFERRED ANNUITY CONTRACTS WITH IMMEDIATE INCOME ANNUITY CONTRACTS IN VIOLATION OF THE DISCLOSURE AND SUITABILITY REQUIREMENTS OF CERTAIN NEW YORK REGULATIONS. THE FINE WAS PAID ON 10/4/2019. THE CONSENT ORDER ALSO IMPOSED REMEDIATION AND RESTITUTION FOR THE CONTRACT HOLDERS OF THE REPLACEMENT CONTRACTS. NORTHWESTERN MUTUAL AND NYDFS AGREED ON A REVIEW AND RESTITUTION PROCESS TO DETERMINE THE AMOUNT OF RESTITUTION PAYABLE. THE CONSENT ORDER IMPOSED AN INJUCTION REQUIRING NORTHWESTERN MUTUAL TO COMPLY WITH THE DISCLOSURE AND SUITABILITY REQUIREMENTS OF CERTAIN NEW YORK REGULATIONS. Summary: MATTER CLOSED ON SEPTEMBER 24, 2019

Regulatory as of Nov 11, 2024

Allegations: EMPLOYEES OF NORTHWESTERN MUTUAL INVESTMENT SERVICES, LLC (NMIS), NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC (NMIMC), AND MASON STREET ADVISORS, LLC (MSA) SENT AND RECEIVED OFF-CHANNEL COMMUNICATIONS RELATED TO THE BUSINESS OF THE ENTITIES. THESE OFF-CHANNEL COMMUNICATIONS WERE NOT CAPTURED AND RETAINED. FAILURE TO IMPLEMENT POLICIES AND PROCEDURES THAT PROHIBIT OFF-CHANNEL COMMUNICATIONS RESULTED IN A FAILURE TO SUPERVISE. Status: Final Sanction Detail: NORTHWESTERN MUTUAL INVESTMENT SERVICES, LLC (NMIS), NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC (NMIMC), AND MASON STREET ADVISORS, LLC (MSA) WERE CENSURED AND ORDERED TO JOINTLY AND SEVERALLY PAY A CIVIL MONEY PENALTY IN THE AMOUNT OF $16,500,000. NMIS MUST CEASE AND DESIST FROM COMMITTING OR CAUSING ANY VIOLATIONS OF SECTION 17A OF THE EXCHANGE ACT AND RULE 17A-4 THEREUNDER. NMIMC AND MSA MUST CEASE AND DESIST FROM COMMITTING OR CAUSING ANY VIOLATIONS OF SECTION 204 OF THE ADVISERS ACT AND RULE 204-2 THEREUNDER. NMIS, NMIMC, AND MSA WILL RETAIN AN INDEPENDENT COMPLIANCE CONSULTANT TO CONDUCT A REVIEW OF POLICIES AND PROCEDURES, TRAINING, SURVEILLANCE AND TECHNICAL SOLUTIONS RELATED TO ELECTRONIC COMMUNICATIONS. FOR TWO YEARS, NMIS, NMIMC, AND MSA WILL NOTIFY THE SEC OF ANY DISCIPLINE RELATED TO THE PRESERVATION OF ELECTRONIC COMMUNICATIONS. NMIS, NMIMC, AND MSA WILL HAVE THEIR INTERNAL AUDIT FUNCTIONS CONDUCT AUDITS TO ASSESS POLICIES AND PROCEDURES, TRAINING, SURVEILLANCE AND TECHNICAL SOLUTIONS RELATED TO ELECTRONIC COMMUNICATIONS. Summary: IN FEBRUARY 2024, NMIS, NMIMC, AND MSA ENTERED INTO AN OFFER OF SETTLEMENT WITH THE SEC IN WHICH THEY ADMITTED THAT NMIS VIOLATED SECTION 17(A) OF THE EXCHANGE ACT AND RULE 17A-4(B)(4) THEREUNDER AND NMIMC AND MSA VIOLATED SECTION 204 OF THE ADVISERS ACT AND RULE 204-2(A)(7) THEREUNDER FOR FAILING TO MAINTAIN RECORDS OF CERTAIN BUSINESS-RELATED COMMUNICATIONS MADE BY EMPLOYEES WHEN THEY USED THEIR PERSONAL DEVICES ("OFF-CHANNEL COMMUNICATIONS") AND FOR FAILING TO SUPERVISE ITS ASSOCIATES' BUSINESS-RELATED COMMUNICATIONS. THE SETTLEMENT WAS RELATED TO A SEC RISK-BASED INITIATIVE, WHEREBY THE SEC INVESTIGATED A LARGE NUMBER OF FINANCIAL SERVICES FIRMS TO DETERMINE WHETHER THOSE FIRMS WERE PROPERLY RETAINING BUSINESS-RELATED TEXT AND INSTANT MESSAGES AND OTHER OFF-CHANNEL COMMUNICATIONS SENT AND RECEIVED ON EMPLOYEES' PERSONAL DEVICES. FOLLOWING THE COMMENCEMENT OF THE SEC'S INITIATIVE, NMIS, NMIMC, AND MSA COOPERATED WITH THE SEC. IT WAS DISCOVERED THAT CERTAIN EMPLOYEES COMMUNICATED OFF-CHANNEL USING NON-APPROVED METHODS ON THEIR PERSONAL DEVICES ABOUT BROKER-DEALER AND INVESTMENT ADVISER BUSINESSES.

Disclosure text reproduced verbatim from the firm's own Form ADV filings.

How they charge

  • Percentage of assets under management
  • Other fees
  • SEE SCHEDULE D-MISCELLANEOUS

Services

  • Portfolio management for investment companies
  • Selection of other advisers

Custody

Reported custodians

Amounts as reported in ADV Item 5.K.(3) (custodians holding 10%+ of SMA assets).

Firm reports it does not have custody of client funds or securities (Item 9.A).

Source

All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Mar 31, 2026.

View current Form ADV (SEC/IAPD) ↗