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Nonprofit · EIN 23-7212847

COBLENTZ SOCIETY

Tax-exempt · NAPA, CA 94558

Financials

$81K$81K2023$122K$93K2024$141K$94K2025
Revenue Expenses · by fiscal year end
Financials of COBLENTZ SOCIETY by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990$141,121$94,342$46,779$932,394$0$932,394
December 31, 2024990$122,391$93,116$29,275$886,266$651$885,615
December 31, 2023990$81,009$81,304-$295$856,340$0$856,340
Financial details: 990 for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$25,577
Membership dues
$10,607
Program service revenue
$6,375
Investment income
$109,169
Other revenue
$0

Expenses

Grants and similar amounts paid
$23,034
Compensation of officers, directors and key employees
$0
Salaries, compensation and benefits (total)
$0
Professional fundraising fees
$0
Travel
$18,746
Program services (functional)
$79,527
Management and general (functional)
$14,815

Balance sheet and other

Total assets, start of year
$886,266
Total assets, end of year
$932,394
Total liabilities, end of year
$0
Net assets, end of year
$932,394
Publicly traded securities
$915,242
Gross receipts
$242,316
Employees
0
Volunteers
40
Year formed
1972
State of legal domicile
CT

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 December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
Kenneth KnappenbergerManager
Trustee or director
2$0
Jerome WorkmanManager
Trustee or director
2$0
Mary LewisManager
Trustee or director
2$0
Barry LavineManager
Trustee or director
2$0
Thomas MayerhoeferManager
Trustee or director
2$0
Brooke KammrathManager
Trustee or director
2$0
Karl BookshManager
Trustee or director
2$0
David HeapsManager
Trustee or director
2$0
Debra PeruSecretary
Officer
2$0
Nancy JestelTreasurer
Officer
3$0
Rohith ReddyPresident
Officer
5$0
990 for the year ended December 31, 2024: 11 people
NameTitleHours / weekCompensation
Kenneth KnappenbergerManager
Trustee or director
1$0
Jerome WorkmanManager
Trustee or director
2$0
Mary LewisManager
Trustee or director
1$0
Barry LavineManager
Trustee or director
1$0
Michael GeorgeManager
Trustee or director
1$0
Peter HarringtonManager
Trustee or director
1$0
Karin BalssManager
Trustee or director
1$0
Isabella GoodenoughManager
Trustee or director
1$0
Debra PeruSecretary
Officer
2$0
Nancy JestelTreasurer
Officer
4$0
Luisa ProfetaPresident
Officer
4$0
990 for the year ended December 31, 2023: 11 people
NameTitleHours / weekCompensation
Kenneth KnappenbergerManager
Trustee or director
1$0
Jerome WorkmanManager
Trustee or director
2$0
Mary LewisManager
Trustee or director
1$0
Barry LavineManager
Trustee or director
1$0
Michael GeorgeManager
Trustee or director
2$0
Peter HarringtonManager
Trustee or director
0.5$0
Karin BalssManager
Trustee or director
2$0
Isabella GoodenoughManager
Trustee or director
2$0
Debra PeruSecretary
Officer
2$0
Nancy JestelTreasurer
Officer
4$0
Luisa ProfetaPresident
Officer
4$0

Address and contacts

Address (IRS master file)
1836 HARDMAN AVE, NAPA, CA 94558-1409
In care of
% MARY CARRABBA
Mailing address (990-N for 2013)
3815 Dickerson Street, Arlington VA 222072968
Principal officer (990 for 2025)
Rohith Reddy, 3035 Covebrook Dr, Pearland, TX 77584
Principal officer (990-N for 2013)
Mary W Carrabba, 955 Drew Lane, Ashland OR 97520
Signed the 990
Nancy Jestel, Treasurer
Phone
(541) 261-9800

California records

California keeps its own records of charities and corporations. Search them by EIN 23-7212847 or by the name COBLENTZ SOCIETY.

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

Mission

Scientific education and annual recognition of scientific achievement in the field of vibrational spectroscopy

990 for the year ended December 31, 2025

Program accomplishments

  • Conferences - periodic meetings of scientists and society membership in support of vibrational spectroscopy
    Expenses $46,984 · grants $13,950 · revenue $500
  • Awards - annual recognition of scientific achievement in the field of vibrational spectroscopy
    Expenses $24,369 · grants $7,585 · revenue $3,500
  • Educational programs and publications support
    Expenses $8,174 · grants $1,500 · revenue $5,180

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 December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990 on file
2024December 31, 2024May 15, 2025990 on file
2023December 31, 2023May 15, 2024990 on file

IRS record

EIN
23-7212847
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1972
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$932,394
Income (IRS master file)
$242,316

Filing history

FormYear endedRevenueExpensesAssetsReturn
990December 2025$141,121$94,342$932,394IRS
990December 2024$122,391$93,116$886,266IRS
990December 2023$81,009$81,304$856,340XML
990December 2022$88,602$53,423$856,635IRS
990December 2021–––IRS
990December 2020–––IRS
990-N for 2013
Officer: Mary W Carrabba
December 31, 2013≤ $50,000 receipts––e-Postcard

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 23-7212847).

Questions about COBLENTZ SOCIETY

What is the EIN of COBLENTZ SOCIETY?
The employer identification number (EIN) of COBLENTZ SOCIETY is 23-7212847.
Is COBLENTZ SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1972.
Are donations to COBLENTZ SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does COBLENTZ SOCIETY 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 COBLENTZ SOCIETY due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did COBLENTZ SOCIETY last file with the IRS?
The latest return in the IRS public files is the 990 for the year ended December 2025.
Who is the principal officer of COBLENTZ SOCIETY?
The 990 for the year ended December 31, 2025 names Rohith Reddy.
Who are the officers and directors of COBLENTZ SOCIETY?
The 990 for the year ended December 31, 2025 lists 11 people; 0 received compensation from the organization.
How much revenue does COBLENTZ SOCIETY have?
On its 990 for the year ended December 31, 2025 it reported revenue of $141,121, expenses of $94,342 and total assets of $932,394 at year end.

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