International Society of Protistologists Inc
Promotes the presentation and discussion of new or important facts and problems in protistology, and works to provide resources for the promotion and advancement of this science, including …
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Visit www.protistologists.orgAbout International Society of Protistologists Inc
The International Society of Protistologists (ISOP) is an association of scientists devoted to research on single-celled eukaryotes or protists.
Verified certifications
Confirmed against the issuing authority - not self-reported.
Mission
Promotes the presentation and discussion of new or important facts and problems in protistology, and works to provide resources for the promotion and advancement of this science, including the publication of society scientific journal.
Focus areas & reach
· What they work on and whereHow it stacks up against peers
· vs. 6 similar science & technology in United StatesConcerns
· None foundWhere every $1 goes
· FY2024 · IRS 990 (FY2024)GiveRadar Analysis
Original analysis from GiveRadar's dataset of comparable organizations
From what GiveRadar has verified so far, International Society of Protistologists Inc has a complete profile, cross-referenced across 4 independent sources including the IRS.
- Established in 1972, it predates 81% of the science & technology charities in the United States GiveRadar has a founding year for. View this cohort
- It has more complete governance disclosure than nearly all similar organizations, because GiveRadar has verified leadership, executive compensation, a mission statement and a founding date. See national comparisons
- It is one of the better-documented science & technology charities in the United States GiveRadar currently tracks, because GiveRadar has verified its financial disclosures and its registration. Most of those have little verified data on record yet. View this cohort
- government registration
- financial records (5 filed years)
- disclosed leadership
- a website
- third-party accreditation
- a contact email
- a donation page
- an owner-submitted profile claim
Analysis based on GiveRadar's benchmark dataset of 2026-07-03. It describes what GiveRadar has verified, not a judgment of the organization itself.
Common questions
· Auto-generated from filings + methodologyInternational Society of Protistologists Inc is a registered science & technology nonprofit based in Woods Hole, MA, United States. It is registered with the Internal Revenue Service (IRS). It was founded in 1972 and has been operating for 54 years. Its EIN is 420959367. According to GiveRadar's records, it holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. GiveRadar's Integrity Assessment for the organization is 73/100, which reflects how much public information is available, not whether the charity is legitimate. The organization reports $191K in annual revenue. 79 officers and directors are publicly disclosed. No red flags have been detected.
International Society of Protistologists Inc's EIN (Employer Identification Number) is 420959367. This is the organization's IRS tax identification number; you can use it to verify tax-exempt status and to look up its Form 990 filings with the IRS.
International Society of Protistologists Inc has a GiveRadar Integrity Assessment of 73/100. This score combines five components: Registration (20 pts), Financial Transparency (30 pts), Governance (20 pts), Contact Availability (10 pts), and Data Recency (20 pts), with negative adjustments for any red flags. A score of 73 ('Strong transparency') reflects well-documented governance, recent financials, named leadership, and working contact details. The charity allocates 84% of expenses to programs, which contributes positively to its score. For comparison, the average integrity assessment for science & technology charities in United States is 90/100.
International Society of Protistologists Inc is located in Woods Hole, MA, United States. The organization was established in 1972 and has been active for 54 years.
Based on official tax filings, International Society of Protistologists Inc has $191K in annual revenue. It allocates 84% of expenses to programs and services. This is in line with the average of 87% for science & technology charities in United States. Its revenue is below the peer average of $15M. Create a free GiveRadar account to view the complete financial breakdown with year-over-year trends.
International Society of Protistologists Inc is classified as a Science & Technology organization, registered in United States. It operates as a Supporting organization (509(a)(3)). By size, it is categorized as a small organization. It has $191K in annual revenue. The organization has 79 disclosed officers and directors.
No red flags have been detected for International Society of Protistologists Inc. GiveRadar automatically screens charities for concerning patterns including high executive compensation, low program spending, and missing financial filings. Based on available official data, no issues have been identified.
According to GiveRadar's records, International Society of Protistologists Inc holds active tax-deductible status on the IRS Publication 78 list, which means donations are tax-deductible and the organization is in good standing with the IRS. It is registered with the Internal Revenue Service (IRS). It reports that 84% of expenses go to programs (the peer average is 87%). GiveRadar provides data for research and does not endorse any organization. A GiveRadar Integrity Assessment reflects how much public data is available, not whether an organization is safe to donate to, so it is always smart to do your own research before giving.
The International Society of Protistologists (ISOP) is an association of scientists devoted to research on single-celled eukaryotes or protists. International Society of Protistologists Inc is classified as a science & technology organization registered in United States. The organization was founded in 1972.
Among science & technology charities registered in United States: It allocates 84% of expenses to programs, in line with the peer average of 87%. Its annual revenue of $191K is below the peer average of $15M.
Yes, donations to International Society of Protistologists Inc are generally tax-deductible in the United States. Its EIN is 420959367, which you can use for tax filing purposes. Donors can typically deduct contributions on their federal income tax return if they itemize deductions. Consult a tax professional for guidance specific to your situation.
Filing history
5 years on file from IRS 990 (FY2024): revenue, expenses, program spending, assets, and liabilities by fiscal year.
See 5 years of revenue, expense breakdowns, and balance sheet.
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Tax-deductibility for donors
Donations may be tax-deductible for residents of United States under local rules. Confirm with the charity directly.
INTERNATIONAL SOCIETY OF PROTISTOLOGISTS INC is registered in United States. Donations from the Netherlands to charities outside the EU/EEA are generally not tax-deductible for Dutch donors unless the charity is listed on the Dutch ANBI register with foreign-recognized status.
Always confirm tax treatment with the charity directly or your tax advisor before donating.
Leadership
From FY2024 filing
Officers & trustees (25)
Source: Public filings
25 officers and trustees on file - free with a GiveRadar account.
Latest news
From global news sources
No recent news coverage found
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Activity timeline
Filings and press mentions, merged
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How many charities work in each area, with this charity's area highlighted.
Most common causes in United States
Causes charities work on most.
Sources and verification
- Registration and legal identity
- Internal Revenue Service (IRS) - Tax Exempt Organization Search
- Financial filings
- IRS Form 990 filings - Fiscal year 2024 most recent on file.
- Officers and trustees
- Internal Revenue Service (IRS) - Tax Exempt Organization Search - 79 disclosed in the public registry.
- News and media coverage
- GDELT Project + Google News
- Supplementary verification
- Charity Navigator
Data freshness
What we know and don't know
Exactly which public data we hold on this charity. Our score reflects transparency, not impact.
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Financial data · FY2024 on record
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Named leadership · 79 officers on file
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Government registration · Registered with an official registry
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Mission statement · Published
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Official website · On record
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Headquarters address · On file
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Direct contact · Email or phone published
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Tax-deductibility · Verified
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Founding date · 1972
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Executive payTop-officer pay not disclosed
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Programs & activitiesNo named programs listed by the charity
Methodology
GiveRadar builds each profile primarily from official government charity registries, supplemented where available by third-party nonprofit databases and news archives, and combines it into a single 0-100 integrity assessment. The exact sources for this charity are listed above. We don't take a cut of any donation, ever.
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Quick facts about International Society of Protistologists Inc
- What is International Society of Protistologists Inc?
- International Society of Protistologists Inc is a science & technology supporting organization (509(a)(3)) based in Woods Hole, United States. The International Society of Protistologists (ISOP) is an association of scientists devoted to research on single-celled eukaryotes or protists.
- When was International Society of Protistologists Inc founded?
- International Society of Protistologists Inc was founded in 1972.
- Who leads International Society of Protistologists Inc?
- Virginia Edgcomb serves as Vice President.
- Where is International Society of Protistologists Inc located?
- Headquartered in Woods Hole, MA, United States.
- What is International Society of Protistologists Inc's annual budget?
- Annual revenue for fiscal year 2024 is approximately $100K-$1M. 84% of expenses go to program services.
- Is International Society of Protistologists Inc trustworthy?
- International Society of Protistologists Inc has a GiveRadar Integrity Assessment of 73 out of 100 (Strong transparency). The score reflects public-data transparency: registration, financial disclosure, governance, contact details, and how recently data was refreshed. It does not measure program impact.
- What is International Society of Protistologists Inc's registration number?
- IRS EIN: 420959367.
- What is International Society of Protistologists Inc's website?
- http://www.protistologists.org