International Society on Oxygen Transport to Tissue
International Society on Oxygen Transport to Tissue is a private foundation focused on Medical Research, based in Aston, PA. IRS filing data is available from 2021 through 2025. As of 2025, the organization holds $11K in total assets. In 2025, it made $15K in qualifying distributions. Net investment income was $1.
International Society on Oxygen Transport to Tissue at a glance
- Total assets
- $10,692
- +6.7% vs 2024
- Revenue (2025)
- $15,393
- +149.1% vs 2024
- Qualifying distributions (2025)
- $14,726
- -4.7% vs 2024
- Expenses (2025)
- $14,726
- -4.7% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026.
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Qualifying Distributions | Net Investment Income |
|---|---|---|---|---|---|
| 2025 | $10,692 | $15,393 | $14,726 | $14,726 | $1 |
| 2024 | $10,025 | $6,179 | $15,450 | $15,450 | $7 |
| 2023 | $19,296 | $4,492 | $12,731 | $12,731 | $11 |
| 2022 | $27,535 | $5,806 | $3,952 | $3,952 | $2 |
| 2021 | $25,681 | $3,738 | $5,973 | — | $2 |
Leadership & Key People
Officers and directors from IRS filings
International Society on Oxygen Transport to Tissue is led by Ilias Tachtsidis, President on the 2025 filing; 1 of 5 officers listed in 2025 is compensated.
Officers on the 2025 filing
Ilias Tachtsidis
President
New on the 2025 filing
1 hr/week
No compensation reported
Duane Bruley
Director Founder
On filings since 2021
1 hr/week
No compensation reported
Lin Li
Director
On filings since 2021
1 hr/week
No compensation reported
Peter Keipert
Treasurer
On filings since 2021
5 hrs/week
$3K (2021) → $3K (2025)
Oliver Thews
Secretary
On filings since 2021
1 hr/week
No compensation reported
Former officers (2)
- Former: Sally Pias (2024) — President
- Former: Peter Kiepert (2022) — Treasurer
Data from IRS Form 990 filings, 2021–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $3K, to Peter Keipert (Treasurer).
Frequently asked questions about International Society on Oxygen Transport to Tissue
How large is International Society on Oxygen Transport to Tissue?
International Society on Oxygen Transport to Tissue reported $11K in total assets on its 2025 IRS Form 990-PF. Its revenue that year was $15K.
What is International Society on Oxygen Transport to Tissue?
International Society on Oxygen Transport to Tissue is a private foundation focused on Medical Research, based in Aston, PA. It holds $11K in total assets as of 2025.
What is International Society on Oxygen Transport to Tissue's EIN?
International Society on Oxygen Transport to Tissue's EIN (Employer Identification Number) is 36-3270081. IRS Form 990 filing data is available on this page for 2021–2025.
Data last updated October 2026. Sourced from IRS Form 990-PF filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2021–2025
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International Society on Oxygen Transport to Tissue down — hundreds of funders to go?