Firm profile

National Investment Services of America, LLC

MILWAUKEE, WICRD 307169Registration Status: ApprovedEffective since February 26, 2020SEC # 801-118132Latest ADV May 1, 2026

National Investment Services of America, LLC is an SEC registered investment adviser organized as a limited liability company with a primary office location in Milwaukee, WI. Its latest Form ADV filing, dated May 1, 2026, reports $16.3B in regulatory assets under management, 38 employees, 2 offices, and 360 accounts.

Assets Under Management
$16.3B
Employees
38
Offices
2 offices
Total Clients
360

Associated firm names

2 names listed
  • NATIONAL INVESTMENT SERVICES
  • NATIONAL INVESTMENT SERVICES OF AMERICA, LLC

Leadership

4 roles identified
CEOBartlett J. Mccartin
CCONatalie K. Abbott
CFOScott O. Van Lith

Advisory services offered

4 types reported
Portfolio management for businesses
Portfolio management for individuals and small businesses
Portfolio management for investment companies

Fee models offered

2 types reported
Asset based fees
Performance-based fees

Offices & Contact

Primary office

MILWAUKEE, Wisconsin, United States

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Primary office regionOther reported regions

Shading shows states and countries with reported offices. Cities are listed below; shading does not indicate service coverage.

Wisconsin

MILWAUKEEPrimary office

Illinois

OAK BROOK

2 office records listed · 2 total offices reported. Counts can use different reporting dates. SEC filers may list only their largest 25 additional offices.

Contact and digital presence

ADV profile links

Regulatory Assets Under Management Breakdown

Total regulatory assets under management$16.3Bas of May 1, 2026
Discretionary100.0%
$16.3B
100% of total RAUM100.0%
Non-discretionary0.0%
$0
0% of total RAUM0.0%
All regulatory assets under management are discretionary.

Client Coverage Demographics

Top client segmentPension Plans represent 73.1% of total clients.
Top client categories% of clientsClients
1
Pension Plans
73.1%
263
2
Charitable
9.7%
35
3
Government
8.1%
29
4
Pooled Investment Vehicles
3.3%
12
5
Individuals
2.8%
10

Assets under management Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total AUM$16.3B
Total Accounts360
10Y AUM Change+$7.5B (+85.7%)

Private Funds

Private funds reported by National Investment Services of America, LLC

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Employee Growth by Quarter

Quarterly points use the latest ADV filing or SEC roster snapshot available in each quarter.

Total Employees38
Clients per Employee9:1
10Y Employee Change-1 (-2.6%)

Historical AUM and employee figures reflect available SEC Form ADV filings under this CRD. Filing gaps may reflect registration status changes, dormant periods, state registration periods, firm restructuring, or other reporting changes. Rialytix does not interpolate missing periods.


Ownership

Reported direct and indirect ownership ranges

Each range applies to a separate reported relationship and should not be added together.

Reported ownership ranges

Highlighted bands show the percentage range reported in Form ADV.

0%25%50%75%100%
RESOLUTE INVESTMENT MANAGERS, INC.Direct owner · Schedule AInterest in NATIONAL INVESTMENT SERVICES OF AMERICA, LLC
50% to < 75%
NIS HOLDING CORPORATIONDirect owner · Schedule AInterest in NATIONAL INVESTMENT SERVICES OF AMERICA, LLC
25% to < 50%
NORMAN EDWARD SIDLERDirect owner · Schedule AInterest in NATIONAL INVESTMENT SERVICES OF AMERICA, LLC
< 5%
BARTLETT JOSEPH MCCARTINDirect owner · Schedule AInterest in NATIONAL INVESTMENT SERVICES OF AMERICA, LLC
< 5%
JOHN P FREMGENDirect owner · Schedule AInterest in NATIONAL INVESTMENT SERVICES OF AMERICA, LLC
< 5%
MARK FREDERICK STEENDirect owner · Schedule AInterest in NATIONAL INVESTMENT SERVICES OF AMERICA, LLC
< 5%
RESOLUTE ACQUISITION, INC.Indirect owner · Schedule BInterest in RESOLUTE INVESTMENT MANAGERS, INC.
75%+
RESOLUTE TOPCO, INC.Indirect owner · Schedule BInterest in RESOLUTE ACQUISITION, INC.
75%+

Bars represent the reported range at that individual ownership step, not an estimated percentage of the advisory firm. Indirect relationships may refer to intermediate entities rather than directly to National Investment Services of America, LLC.

Reported ownership and control details

Form ADV · Filing date 2026-05-01 · Schedules A and B

15 entries
#Owner / person & roleInterest in entityReported interestControl personTitle / status acquiredSource
1ROBERT PATRICK BROOKSPRINCIPAL, DIRECTORIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesPRINCIPAL, DIRECTOR01/2026Schedule APDF page 75
2NORMAN EDWARD SIDLERPRINCIPAL, MANAGING PARTNER, DIRECTORIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesPRINCIPAL, MANAGING PARTNER, DIRECTOR12/2019Schedule APDF page 75
3BARTLETT JOSEPH MCCARTINCHIEF EXECUTIVE OFFICER, PRINCIPAL, MANAGING PARTNER, DIRECTORIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesCHIEF EXECUTIVE OFFICER, PRINCIPAL, MANAGING PARTNER, DIRECTOR12/2019Schedule APDF page 75
4JOHN P FREMGENPRINCIPAL, MANAGING PARTNER, DIRECTORIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesPRINCIPAL, MANAGING PARTNER, DIRECTOR12/2019Schedule APDF page 75
5SCOTT ORILE VAN LITHCHIEF FINANCIAL OFFICERIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesCHIEF FINANCIAL OFFICER12/2019Schedule APDF page 75
6MARK ROBERT ANDERSONCHIEF STRATEGY OFFICERIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesCHIEF STRATEGY OFFICER12/2019Schedule APDF page 75
7JASON CHRISTOPHER BERRIECHIEF INVESTMENT OFFICER, DIRECTORIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesCHIEF INVESTMENT OFFICER, DIRECTOR10/2020Schedule APDF page 75
8NIS HOLDING CORPORATIONDIRECT OWNERDomestic entityNATIONAL INVESTMENT SERVICES OF AMERICA, LLC25% to less than 50%Code CYesDIRECT OWNER12/2019Schedule APDF page 75
9RESOLUTE INVESTMENT MANAGERS, INC.DIRECT OWNERDomestic entityNATIONAL INVESTMENT SERVICES OF AMERICA, LLC50% to less than 75%Code DYesDIRECT OWNER12/2019Schedule APDF page 75
10NATALIE KAY ABBOTTCHIEF COMPLIANCE OFFICERIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesCHIEF COMPLIANCE OFFICER02/2022Schedule APDF page 75
11Rebecca Lynn HarrisDIRECTORIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesDIRECTOR04/2022Schedule APDF page 75
12GREGORY JOHN STUMMDIRECTORIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesDIRECTOR05/2024Schedule APDF page 75
13MARK FREDERICK STEENPRINCIPAL, MANAGING PARTNERIndividualNATIONAL INVESTMENT SERVICES OF AMERICA, LLCLess than 5%Code NAYesPRINCIPAL, MANAGING PARTNER01/2026Schedule APDF page 75
14RESOLUTE ACQUISITION, INC.SHAREHOLDERDomestic entityRESOLUTE INVESTMENT MANAGERS, INC.75% or moreCode EYesSHAREHOLDER12/2019Schedule BPDF page 75
15RESOLUTE TOPCO, INC.SHAREHOLDERDomestic entityRESOLUTE ACQUISITION, INC.75% or moreCode EYesSHAREHOLDER12/2019Schedule BPDF page 75

Less than 5% may include zero. Code F identifies a role without specifying a percentage. Reported interests may overlap and may not include every owner. Total indirect ownership is not calculated.

Compliance & Disclosures

Filing dated 5/1/2026 3:15:04 PM

Responses were selected by the RIA in its filing. Questions are shortened for readability; “you” refers to the reporting firm, and some questions also cover advisory affiliates.

RIA or supervised-person involvementThe RIA reported that none of the events below involve the firm or its supervised persons.RIA responseNo
AFelonies2 No

In the past ten years, have you or any advisory affiliate:

  • A1Been convicted of or pleaded guilty or no contest to a felony?No
  • A2Been charged with a felony?No
BMisdemeanors2 No

In the past ten years, have you or any advisory affiliate:

  • B1Been convicted of or pleaded guilty or no contest to a misdemeanor involving investments, an investment-related business, fraud, false statements or omissions, wrongful taking of property, bribery, perjury, forgery, counterfeiting, or extortion?No
  • B2Been charged with a misdemeanor of the kind listed above?No
CSEC or CFTC actions5 No

Has the SEC or CFTC ever:

  • C1Found you or an advisory affiliate made a false statement or omission?No
  • C2Found you or an advisory affiliate violated SEC or CFTC regulations or statutes?No
  • C3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • C4Entered an order against you or an advisory affiliate in connection with investment-related activity?No
  • C5Imposed a civil money penalty on you or an advisory affiliate, or ordered you or an advisory affiliate to cease and desist from any activity?No
DOther regulatory actions5 No

Has any other federal regulatory agency, state regulatory agency, or foreign financial regulatory authority ever:

  • D1Found you or an advisory affiliate made a false statement or omission, or was dishonest, unfair, or unethical?No
  • D2Found you or an advisory affiliate violated investment-related regulations or statutes?No
  • D3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • D4In the past ten years, entered an order against you or an advisory affiliate in connection with investment-related activity?No
  • D5Denied, suspended, or revoked your or an advisory affiliate’s registration or license, or otherwise prevented association with an investment-related business or restricted activities?No
ESelf-regulatory organization actions4 No

Has a self-regulatory organization or commodities exchange ever:

  • E1Found you or an advisory affiliate made a false statement or omission?No
  • E2Found you or an advisory affiliate violated its rules, other than a violation designated as a minor rule violation under an SEC-approved plan?No
  • E3Found you or an advisory affiliate caused an investment-related business to have its authorization to do business denied, suspended, revoked, or restricted?No
  • E4Disciplined you or an advisory affiliate by expulsion, suspension, barring association with other members, or otherwise restricting activities?No
FProfessional authorizations1 No
  • FHas an authorization to act as an attorney, accountant, or federal contractor granted to you or an advisory affiliate ever been revoked or suspended?No
GPending regulatory proceedings1 No
  • GAre you or any advisory affiliate now the subject of a regulatory proceeding that could result in a “Yes” answer to any part of C, D, or E?No
HCivil judicial actions and proceedings4 No

(1) Court actions

Has a domestic or foreign court:

  • H(1)(a)In the past ten years, enjoined you or an advisory affiliate in connection with investment-related activity?No
  • H(1)(b)Found that you or an advisory affiliate violated investment-related statutes or regulations?No
  • H(1)(c)Dismissed, pursuant to a settlement agreement, an investment-related civil action brought against you or an advisory affiliate by a state or foreign financial regulatory authority?No

(2) Pending civil proceedings

  • H(2)Are you or any advisory affiliate now the subject of a civil proceeding that could result in a “Yes” answer to any part of H(1)?No

* Metrics are based on the latest available data, including Form ADV filings, brochures, and relationship summaries pulled from the SEC IAPD, and may be subject to change. Learn what is included in the Rialytix data. Please refer to the firm's official disclosures for the most accurate information using their CRD number. This is not investment advice.