INTERNATIONAL SOCIETY OF PHOTOSYNTHESIS RESEARCH, of STILLWATER, OK, is a Small Public Charity tracked in Imperigo's IRS 990 database. The 2025 filing shows $18K in revenue, $11K in expenses, $217K in total assets. 1 publicly reported grants to this organization, totaling roughly $25K, appear in IRS filings.
The tax-exempt purposes of the International Society of Photosynthesis Research are to; 1) encourage the growth and to promote the development of photosynthesis as a pure and applied science, 2) to facilitate publication of research in the science of photosynthesis, 3) to promote international cooperation in photosynthesis research and education, and 4) to sponsor a triennial International Congress on Photosynthesis.
Showing up to 5 of 1 total records — full history available with membership.
Officer compensation and complete director data available with membership.
| Year | Revenue | Expenses | Assets |
|---|---|---|---|
| 2025 | $18K | $11K | $217K |
| 2024 | $58K | $20K | $210K |
| 2023 | $12K | $28K | $172K |
| 2022 | $24K | $35K | $188K |
| 2020 | $13K | $35K | $194K |
Between 2020 and 2025, reported annual revenue grew from $13K to $18K (+46%), with total assets most recently reported at $217K.
Interactive year-over-year charts and full filing details available with membership.
