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US nonprofit · EIN 711045089 · Seattle, WAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 711045089) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2024: assets, liabilities, staff, website, telephone, pay.Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue (us-approach-v4-clean). Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

International Phycological Society A California Nonproft PUB Ben Corp

Donations deductible
Revenue
$142k
year to 31 December 2024
Expenses
$109k
year to 31 December 2024
Total assets
$1.4m
$0 liabilities
Net assets
$1.4m
assets less liabilities
Directors and trustees
15
3.7y av
Staff
0
20 volunteers
Chair observed
≥2 yrs
Joe Zuccarello
Left since last filing
0
no seats appear to have opened
How am I connected?

International Phycological Society A California Nonproft PUB Ben Corp's network

15 peoplei15 people on this map.The large node is the subject of this page. Solid lines are what the register itself records (15). Form 990 filings give names without a person identifier; SEC insider filings carry a CIK.

The board

15 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations.Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 15 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Joe Zuccarello ChairIoc Chair/Ed2022
4 yrs
AKI KatoBoard Direct2022
4 yrs
Conxi Rodriguez-PrietoBoard Direct2022
4 yrs
Fabio RindiBoard Past P2020
6 yrs
Kristen MullerBoard Direct2024
2 yrs
Lawrence LiaoBoard Direct2024
2 yrs
Maggie ReddyBoard Secret2024
2 yrs
Marco CantonatiBoard Direct2024
2 yrs
Mariana De OliveiraBoard Vice P2024
2 yrs
Milagrosa Martinez-GossBoard Direct2024
2 yrs
Nina LundholmBoard Direct2023
3 yrs
Olivier DeclerckBoard Presid2022
4 yrs
Orlando Necchi JRBoard Direct2022
4 yrs
Pilar Diaz TapiaBoard Direct2023
3 yrs
Timothy NelsonBoard Treasu2021
5 yrs
Under 5 years5 to 6 years6 years or moreShow all 15 →

Pay and hours

year to 31 December 2024iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Olivier DeclerckBoard Presid3$0
Fabio RindiBoard Past P1$0
Mariana de OliveiraBoard Vice P2$0
Maggie ReddyBoard Secret2$0
Timothy NelsonBoard Treasu2$0
Joe ZuccarelloIoc Chair/Ed10$0
Marco CantonatiBoard Direct1$0
Milagrosa Martinez-GossBoard Direct1$0
Aki KatoBoard Direct1$0
Lawrence LiaoBoard Direct1$0
Nina LundholmBoard Direct1$0
Kristen MullerBoard Direct1$0
Orlando Necchi JrBoard Direct1$0
Conxi Rodriguez-PrietoBoard Direct1$0
Pilar Diaz TapiaBoard Direct1$0

No pay was reported for anyone in Part VII on this return.

About

Legal name
International Phycological Society A California Nonproft Pub Ben Corp
EIN
711045089
Address
3307 3rd Ave W Ste 205, Seattle, WA, 98119-1950
State
Washington
Mission
Development of phycology, distribution of phycological information, and international cooperation among phycologists and phycological organizations. (as filed on the Form 990)
Activity (NTEE)
U03 Science and technology research
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Science & Technology
Size band
6 (IRS master file code)
Formed
2007
Principal officer
Olivier Declerck (as named on the Form 990)
IRS ruling date
1 May 2008
Status
Code 01 (unconditional exemption)
Form 990 filings on record
7, latest 2024
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥6years on the filingsFabio Rindi
≥5years on the filingsTimothy Nelson
≥4years on the filingsJoe Zuccarello
≥4years on the filingsAKI Kato

Latest return

year to 31 December 2024iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2024. US dollars, as filed.
Total assets
$1.4m
Total liabilities
$0
Net assets or fund balances
$1.4m
Contributions and grants received
$11k
Program service revenue
$0
Grants and similar paid out
$16k
Employees
0
Volunteers
20

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$142k$109k$34k

As filed on the IRS Form 990. US dollars.