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Governance Register
US nonprofit · EIN 201850035 · Cincinnati, OHiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 201850035) - 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 30 June 2025: assets, liabilities, staff, website, telephone, pay.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

Horizon Science Academy-Cincinnati's network

6 people3 organisationsi6 people and 3 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (6). Violet dotted lines (6) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

6 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 in the tables. The network map shows same-name matches as likely links only, never as confirmed.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 5 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
NameRole as filedSinceOn the board
Abdurrahman AkkurekSchool Princ2023
3 yrs
Aysegul KingBoard Member2018
8 yrs
Davit DitmarsBoard Member2023
3 yrs
Dr Savas KayaPresident2018
8 yrs
Yalcin KaratasBoard Member2018
8 yrs
Ziya KaraBoard Member2022
4 yrs
Under 5 years5 to 6 years6 years or more

Pay and hours

year to 30 June 2025iFrom 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
Abdurrahman AkkurekSchool Princ40$82k
David DitmarsBoard Member1$0
Ahmet ErdalTreasurer5$0
Dr Zekeriya KaratasBoard Member1$0
Dr Savas KayaPresident1$0
Dr Aysegul KingBoard Member1$0
Yunus SahinkayaSecretary1$0

About

Legal name
Horizon Science Academy-Cincinnati
EIN
201850035
Address
1055 Laidlaw Ave, Cincinnati, OH, 45237-5005
State
Ohio
Mission
The mission of horizon science academy-cincinnati is to foster an environment of inquiry and a love of learning so students are prepared to thrive in a stem-focused high school, college and the world. (as filed on the Form 990)
Activity (NTEE)
B29 Education
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Education
Size band
6 (IRS master file code)
Formed
2004
Principal officer
Abdurrahman Akkurek (as named on the Form 990)
IRS ruling date
1 September 2005
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2023
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥8years on the filingsAysegul King
≥8years on the filingsDr Savas Kaya
≥8years on the filingsYalcin Karatas
≥4years on the filingsZiya Kara

Latest return

year to 30 June 2025iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 30 June 2025. US dollars, as filed.
Total assets
$3.6m
Total liabilities
$5.7m
Net assets or fund balances
Minus $2.1m
Contributions and grants received
$3.1m
Program service revenue
$106k
Employees
40