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Nonprofit · EIN 20-0402170

LONMARK INTERNATIONAL

Tax-exempt · SANTA CLARA, CA 95054

Financials

$80K$85K2023$109K$97K2024
Revenue Expenses · by fiscal year end
Financials of LONMARK INTERNATIONAL by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
August 31, 2025990$108,950$96,910$12,040$58,927$5,000$53,927
August 31, 2024990$80,171$85,365-$5,194$41,887$0$41,887
Financial details: 990 for the year ended August 31, 2025

Revenue

Contributions, gifts and grants
$91,075
Membership dues
$91,075
Program service revenue
$17,875
Investment income
$0
Other revenue
$0

Expenses

Grants and similar amounts paid
$0
Compensation of officers, directors and key employees
$19,800
Salaries, compensation and benefits (total)
$19,800
Professional fundraising fees
$0
Legal fees
$1,863
Accounting fees
$4,429
Travel
$2,233
Program services (functional)
$84,620
Management and general (functional)
$12,290

Balance sheet and other

Total assets, start of year
$41,887
Total assets, end of year
$58,927
Total liabilities, end of year
$5,000
Net assets, end of year
$53,927
Net assets without donor restrictions
$53,927
Gross receipts
$108,950
Employees
0
Volunteers
6
Year formed
2003
State of legal domicile
CA

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended August 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
ROLF BIENERTEXECUTIVE DIRECTOR
Trustee or director, Officer
10$19,800
ALAN SLABODKINSECRETARY
Trustee or director, Officer
0.2$0
MARTIN MENTZELDIRECTOR
Trustee or director
0.2$0
TRACY MARKIECHAIRMAN
Trustee or director, Officer
0.2$0
TOSHIROU TOMITADIRECTOR
Trustee or director
0.2$0
DANIEL ZOTTIDIRECTOR
Trustee or director
0.2$0
990 for the year ended August 31, 2024: 6 people
NameTitleHours / weekCompensation
ROLF BIENERTEXECUTIVE DIRECTOR
Trustee or director, Officer
10$26,550
TOSHIROU TOMITADIRECTOR
Trustee or director
0.2$0
DANIEL ZOTTIDIRECTOR
Trustee or director
0.2$0
MARTIN MENTZELDIRECTOR
Trustee or director
0.2$0
ALAN SLABODKINSECRETARY
Trustee or director, Officer
0.2$0
TRACY MARKIECHAIRMAN
Trustee or director, Officer
0.2$0

Address and contacts

Address (IRS master file)
3600 PETERSON WAY, SANTA CLARA, CA 95054-2808
In care of
% ROLF BIENERT
Principal officer (990 for 2024)
ROLF BIENERT, 3600 PETERSON WAY, Santa Clara, CA 95054
Signed the 990
ROLF BIENERT, EXECUTIVE DIRECTOR
Phone
(925) 336-0239
Return prepared by
Jun Dong CPA

California records

California keeps its own records of charities and corporations. Search them by EIN 20-0402170 or by the name LONMARK INTERNATIONAL.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

Mission

LONMARK INTERNATIONALS MISSION IS TO ENABLE THE EASY INTEGRATION OF MULTI-VENDOR SYSTEMS BASED ON LONWORKS NETWORKS. TODAY, THOUSANDS OF COMPANIES ARE USING LONWORKS CONTROL NETWORKS TO PROVIDE SYSTEMS AND SOLUTIONS FOR BUILDING, HOME, INDUSTRIAL, TELECOMMUNICATIONS.

990 for the year ended August 31, 2025

Program accomplishments

  • LONMARK INTERNATIONAL IS A NON-PROFIT INTERNATIONAL ASSOCIATION RECOGNIZED FOR THE CERTIFICATION, EDUCATION AND PROMOTION OF INTEROPERABILITY STANDARDS FOR CONTROL NETWORKING. AS AN ORGANIZATION LMI CONTINUES TO THRIVE WITH MORE THAN 1,000 PRODUCTS TESTED AND CERTIFIED, AND OVER 1,000 INDUSTRY PROFESSIONALS WORLDWIDE. PRODUCTS BASED ON THE ANSI/CTA-709 (ISO/IEC 14908) STANDARD CONTINUE TO BE WIDELY DEPLOYED WITH PRODUCTS INSTALLED IN OVER 500,000 BUILDINGS WORLDWIDE. THESE AWARDS REFLECT THE VISION AND INNOVATION SHARED AMONG THE MEMBERS OF THE LONMARK COMMUNITY. SHOWS AND EVENTS - LONMARK INTERNATIONAL AND ITS AFFILIATE ORGANIZATIONS TAKE PART IN INDUSTRY EVENTS AROUND THE WORLD AT VARIOUS LEVELS. WHETHER IT IS A CO-SPONSORED MEMBER PAVILION, MEMBER BOOTH, TECHNOLOGY DEMONSTRATION, FEATURED SPEAKER, OR A SUPPORTING OR ENDORSING ORGANIZATION, LONMARK AND ITS MEMBERS ARE THERE.
    Expenses $84,620
  • CERTIFICATION TESTING PROGRAM - LONMARK INTERNATIONAL IS WIDELY RECOGNIZED FOR ITS CERTIFICATION PROGRAMS SUPPORTING THE INTERNATIONAL ISO/IEC 14908-X FAMILY OF CONTROL NETWORKING STANDARDS. SINCE 1995, LONMARK INTERNATIONAL HAS CERTIFIED HUNDREDS OF PRODUCTS AND SYSTEM INTEGRATORS SATISFYING INDUSTRY CONFORMANCE STANDARDS. LONMARK CERTIFICATION PROGRAMS PROVIDE CONFIDENCE TO END-USERS THAT PRODUCTS FROM MULTIPLE MANUFACTURERS WORK TOGETHER AND THE INSTALLERS HAVE THE NECESSARY KNOWLEDGE TO DELIVER OPEN, INTEGRATED CONTROL SYSTEMS.
  • LONMARK INTERNATIONAL ALSO PROVIDES NECCESSARY TRAININGS OF THE INDUSTRY INCLUDING CYBER SECURITY AND IT INTEGRATION,AUTOMATION CONTROL NETWOR, ADVANCED HIGH-SPEED POWER LINE COMMUNICATION TECHNOLODGY FOR SMART CITIES AND BUILDINGS.

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in August, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025August 31, 2026January 15, 2027Not due yet
2024August 31, 2025January 15, 2026990 on file
2023August 31, 2024January 15, 2025990 on file

IRS record

EIN
20-0402170
Tax-exempt status
501(c)(6): Business league or chamber of commerce
Donations deductible
No
Exempt since
2004
Accounting year ends
August
Files
Form 990 or 990-EZ
Assets (IRS master file)
$58,927
Income (IRS master file)
$108,950

Filing history

FormYear endedRevenueExpensesAssetsReturn
990August 2025$108,950$96,910$58,927XML
990August 2024$80,171$85,365$41,887XML
990August 2023$117,753$146,245$47,081IRS
990August 2022$172,598$200,966$75,573IRS
990August 2021–––IRS
990August 2020–––IRS
990August 2019–––IRS
990August 2018–––IRS

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 20-0402170).

Questions about LONMARK INTERNATIONAL

What is the EIN of LONMARK INTERNATIONAL?
The employer identification number (EIN) of LONMARK INTERNATIONAL is 20-0402170.
Is LONMARK INTERNATIONAL tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 2004.
Are donations to LONMARK INTERNATIONAL tax-deductible?
No. The IRS master file says contributions to it are not deductible.
Which annual return does LONMARK INTERNATIONAL file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of LONMARK INTERNATIONAL due?
The return for tax year 2025 (the year ending August 31, 2026) is due January 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did LONMARK INTERNATIONAL last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended August 2025.
Who is the principal officer of LONMARK INTERNATIONAL?
The 990 for the year ended August 31, 2025 names ROLF BIENERT.
Who are the officers and directors of LONMARK INTERNATIONAL?
The 990 for the year ended August 31, 2025 lists 6 people; 1 received compensation from the organization, the highest $19,800 (ROLF BIENERT, EXECUTIVE DIRECTOR).
How much revenue does LONMARK INTERNATIONAL have?
On its 990 for the year ended August 31, 2025 it reported revenue of $108,950, expenses of $96,910 and total assets of $58,927 at year end.

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