International Society for Nucleosides

EIN 63-1284546 • 501(c)3 • Baltimore, MD

Profile

Research related to nucleosides, nucleotides and nucleic acids

1000 Hilltop Cle Meyr 405-c UmbcBaltimore, MD 21250

www.is3na.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)3 • <$500k nonprofits • Source year 2024

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)3 • <$500k nonprofits • Source year 2024

-2.0%

Higher net margin than 41% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2024

Higher top officer pay than 81% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)3 • <$500k nonprofits • Source year 2024

-0.4%

Faster asset growth than 52% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2023 to 2024

36%

Faster revenue growth than 80% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2023 to 2024

Balance Sheet

Liabilities / Assets60th percentile

Assets

Down

$432,751

Down $1,840 (-0.4%) from 2023

Liabilities

Flat

Flat from 2023

Net Assets

Down

$432,751

Down $1,840 (-0.4%) from 2023

Operations

Liabilities / Revenue62nd percentile Net Margin41st percentile

Revenue

$73,673

Up $19,314 (+36%) from 2023

Expenses

$75,149

Up $65,110 (+649%) from 2023

Net Income

Down

-$1,476

Down $45,796 (-103%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth52nd percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

Highlighted filing

2024

Assets$432,751

Liabilities$0

Net Assets$432,751

Open 2024 Filing

Operations Trend

Revenue Growth80th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

Highlighted filing

2024

Revenue$73,673

Expenses$75,149

Net Income-$1,476

Open 2024 Filing

Filings

Most recent year

2024 • Form 990EZDetailed filing. Detailed filing data is available for this year.

Open filing

Assets: $432,751
Liabilities: $0
Net assets: $432,751
Revenue: $73,673
Expenses: $75,149
Net income: -$1,476

	Balance Sheet			Operations
Year	Assets	Liabilities	Net Assets	Revenue	Expenses	Net Income
2024Detailed filing. Detailed filing data is available for this year.	$4.33	$0.00	$4.33	$0.74	$0.75	$0.01
2023Detailed filing. Detailed filing data is available for this year.	$4.35	$0.00	$4.35	$0.54	$0.10	$0.44
2022Detailed filing. Detailed filing data is available for this year.	$3.86	$0.00	$3.86	$0.40	$0.96	$0.57
2021Detailed filing. Detailed filing data is available for this year.	$4.57	$0.00	$4.57	$1.32	$0.12	$1.20
2020Detailed filing. Detailed filing data is available for this year.	$3.39	$0.00	$3.39	$0.17	$0.22	$0.05
2019Detailed filing. Detailed filing data is available for this year.	$3.35	$0.00	$3.35	$0.77	$0.27	$0.50
2018Detailed filing. Detailed filing data is available for this year.	$2.74	$0.00	$2.74	$0.61	$0.53	$0.08
2017Detailed filing. Detailed filing data is available for this year.	$2.80	$0.00	$2.80	$0.32	$0.12	$0.20
2016Detailed filing. Detailed filing data is available for this year.	$2.56	$0.00	$2.56	$0.38	$0.42	$0.05
2015Detailed filing. Detailed filing data is available for this year.	$2.59	$0.00	$2.59	$0.18	$0.07	$0.11
2014Detailed filing. Detailed filing data is available for this year.	$2.49	$0.00	$2.49	$0.27	$0.35	$0.08
2013Detailed filing. Detailed filing data is available for this year.	$2.60	$0.00	$2.60	$0.69	$0.07	$0.61
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.	$1.98	$0.00	$1.98	$0.34	$0.82	$0.49
2011Summary only. Only limited summary data is available for this year.	$2.46	$0.00		$0.02	$0.15	$0.13
2010Facts available. Structured filing facts are available, but richer extracted sections are limited.	$2.59	$0.00	$2.59	$0.17	$0.12	$0.05

Latest Filing Detail

Jump To

Filing Snapshot

Filing Period: Jan 1, 2024 to Dec 31, 2024
Signed: Jun 26, 2025
Return Version: 2024v5.2
Gross Receipts: $140,946

Mission and Program Overview

Mission

Research related to nucleosides, nucleotides and nucleic acids

Program Services

Description	Grants	Expenses
TO COORDINATE AND SPONSOR MEETINGS IN ORDER TO PROVIDE MEANS FOR THE DISSEMINATION OF KNOWLEDGE DEALING WITH CURRENT RESEARCH.	$0	$75,149

Compensation and Service Providers

Top Officer Pay81st percentile

Employees

Name	Title	Full / Part Time	Base	Other	Total
KATHERINE SELEY-RADTKE	Secretary	PT	$0	-	-
PIET HERDEWIJN	Honorary Member	PT	$0	-	-
JEAN-JACQUEZ VASSEUR	Immediate Past President	PT	$0	-	-
SUZANNE PEYROTTES	Treasurer	PT	$0	-	-
RAMON ERITJA	President	PT	$0	-	-
AMANDA BRYANT-FRIEDRICH	Vice President	PT	$0	-	-

Filing and Contact Details

Filer

Filer Name: International Society for Nucleosides
EIN: 63-1284546
Phone: 4104558684
Address: 1000 HILLTOP CLE MEYR 405-C UMBC, BALTIMORE, MD 21250

Signing Officer

Name: Katherine Seley-radtke
Title: Secretary
Phone: 4104558684
Signed: 2025-06-26
Discuss with paid preparer: Yes

Preparer

Firm: Dipiazza Larocca Heeter & Co LLC
Address: P O BOX 530095, BIRMINGHAM, AL 35253-0095
Preparer: Monty S Waites CPA
Phone: 2058719973

Supplemental Narrative

Additional Explanations

Form 990-ez, Part I, Line 4 - Other Investment Income

“Description: interest income. Amount: 5,924. Description: capital gain distributions. Amount: 190. Description: dividend income. Amount: 11,050. Total included on form 990-ez, line 4: 17,164.”

Form 990-ez, Part I, Line 16 - Other Expenses

“Description: bank charges. Amount: 1,131. Description: website expenses. Amount: 708. Description: foreign taxes paid. Amount: 1. Description: investment expenses. Amount: 888. Description: conference expenses. Amount: 5,285. Description: awards. Amount: 60,431. Description: sponsorship. Amount: 5,605. Total to form 990-ez, line 16: 74,049.”

Form 990-ez, Part I, Line 20 - Other Changes in Net Assets

“Description: loss on currency conversion. Amount: -3,655. Description: unrealized loss on investments. Amount: 3,291. Total to form 990-ez, line 20: -364.”

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This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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