STRATEGY STUDIO / PUBLIC DATA EXPLORER

HORIZON SCIENCE ACADEMY-DENISON

Cite this

Plain text HORIZON SCIENCE ACADEMY-DENISON. Strategy Studio, nonprofit organization profile, tax years 2018–2024. https://strategystudio.org/org/202003228. Retrieved 2026-10-20.

APA Strategy Studio. (n.d.). HORIZON SCIENCE ACADEMY-DENISON [Nonprofit organization profile; tax years 2018–2024]. Retrieved October 20, 2026, from https://strategystudio.org/org/202003228

MLA “HORIZON SCIENCE ACADEMY-DENISON.” Strategy Studio, tax years 2018–2024, https://strategystudio.org/org/202003228. Accessed 20 Oct. 2026.

Retrieved 2026-10-20; covers tax years 2018–2024. Data: Strategy Studio, CC BY 4.0.

2024 · Form 990 · revenue $5.4M · expenses $4.3M · assets $8.0M

EIN
20-2003228
Address
1700 DENISON AVE, CLEVELAND, OH 44109-2945
Website
www.horizondenison.org
NTEE code
B29
Subsection
501(c)(3)
Ruling year
2008
Cross-check
ProPublica Nonprofit Explorer

Mission

Horizon Science Academy Denison Middle School is a public charter school that serving grades K through 8 for children in Cleveland, OH. The school is a college prep school focusing on math, science and technology education.

Each tax year counts once: when a return was amended, only the latest return for that period is used below (superseded returns stay listed, greyed, under Finances).

People paid by the organization

2 people paid across every filing: current people first, then by total pay from this organization. Organizations counts every nonprofit each person appears on.

NameLatest titleYearsLatest year payTotal pay from hereOrganizations
John Cameron School Principal2024 $82,000$82,000 1
Daniel B Akben (former) School Principal2018-2023 $96,027$552,811 1

Officers and directors, no compensation reported

12 people listed on the returns with $0 (or no amount) in every compensation column: current people first. Hours are as filed on the latest return each person appears on.

NameLatest titleYearsHrs/wk (latest)CompensationOrganizations
Donald Malloy Board President2018-2024 1 $0 reported 5
Mustafa Arslan Board Member2021-2024 1 $0 reported 4
Marie Bonilla Board Member2019-2024 1 $0 reported 5
Robert Hasan Board Member2020-2024 1 $0 reported 2
Caglar Guler Board Member2024 1 $0 reported 5
Abdullah Kayretli (former) Board Member2020-2023 1 $0 reported 6
Mehmet Malcok (former) Board Member2018-2020 1 $0 reported 6
Fuat Bicer (former) Board Member2019 1 $0 reported 5
Hamza Balci (former) Board Member2019 1 $0 reported 3
Yilmaz Sozer (former) Board President2018 1 $0 reported 3
Sandra English (former) Board Member2018 1 $0 reported 3
Ali Topcu (former) Board Member2018 1 $0 reported 4

People by year

2024 · 6 people listed · 1 paid, $82K · 35 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
John Cameron School Principal40 $82,000$0$0 $82,0001
Caglar Guler Board Member1 $0$0$0 $05
Mustafa Arslan Board Member1 $0$0$0 $04
Marie Bonilla Board Member1 $0$0$0 $05
Donald Malloy Board President1 $0$0$0 $05
Robert Hasan Board Member1 $0$0$0 $02
2023 · 6 people listed · 1 paid, $96K · 50 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Daniel B Akben School Principal40 $96,027$0$0 $96,0271
Abdullah Kayretli Board Member1 $0$0$0 $06
Mustafa Arslan Board Member1 $0$0$0 $04
Marie Bonilla Board Member1 $0$0$0 $05
Donald Malloy Board President1 $0$0$0 $05
Robert Hasan Board Member1 $0$0$0 $02
2022 · 6 people listed · 1 paid, $99K · 37 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Daniel B Akben School Principal40 $98,665$0$0 $98,6651
Abdullah Kayretli Board Member1 $0$0$0 $06
Mustafa Arslan Board Member1 $0$0$0 $04
Marie Bonilla Board Member1 $0$0$0 $05
Donald Malloy Board President1 $0$0$0 $05
Robert Hasan Board Member1 $0$0$0 $02
2021 · 6 people listed · 1 paid, $97K · 29 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Daniel B Akben School Principal40 $96,882$0$0 $96,8821
Abdullah Kayretli Board Member1 $0$0$0 $06
Mustafa Arslan Board Member1 $0$0$0 $04
Marie Bonilla Board Member1 $0$0$0 $05
Donald Malloy Board President1 $0$0$0 $05
Robert Hasan Board Member1 $0$0$0 $02
2020 · 6 people listed · 1 paid, $96K · 37 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Daniel B Akben School Principal40 $96,458$0$0 $96,4581
Abdullah Kayretli Board Member1 $0$0$0 $06
Mehmet Malcok Board Member1 $0$0$0 $06
Marie Bonilla Board Member1 $0$0$0 $05
Donald Malloy Board President1 $0$0$0 $05
Robert Hasan Board Member1 $0$0$0 $02
2019 · 6 people listed · 1 paid, $86K · 37 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Daniel B Akben School Principal40 $85,715$0$0 $85,7151
Fuat Bicer Board Member1 $0$0$0 $05
Mehmet Malcok Board Member1 $0$0$0 $06
Marie Bonilla Board Member1 $0$0$0 $05
Donald Malloy Board President1 $0$0$0 $05
Hamza Balci Board Member1 $0$0$0 $03
2018 · 6 people listed · 1 paid, $79K · 49 employees
NameTitleHrs/wkFrom orgFrom relatedOtherTotalOrgs
Daniel B Akben School Principal40 $79,064$0$0 $79,0641
Yilmaz Sozer Board President1 $0$0$0 $03
Mehmet Malcok Board Member1 $0$0$0 $06
Sandra English Board Member1 $0$0$0 $03
Donald Malloy Board Member1 $0$0$0 $05
Ali Topcu Board Member1 $0$0$0 $04

Highest-paid independent contractors

No independent contractors reported.

Who gave

Contributor names are not public for this form type.

Public charities filing Form 990 or 990-EZ report large donors on Schedule B, but the IRS withholds their names and addresses from public copies. Private foundations (990-PF) are different: their contributors are public.

Finances

Newest first. Each filing: its name on one row, its figures on the row beneath. Greyed filings are superseded by a later return for the same period and are left out everywhere else on this page.

RevenueExpensesAssetsNet assetsContributionsProgram revenueOfficer payEmployeesVolunteers
2024 · Form 990 period ending 2025-06-30 · view filing · original 990 ↗
$5,350,233$4,275,079 $7,959,082$4,513,797 $5,302,983$47,250 $82,00035-
2023 · Form 990 period ending 2024-06-30 · view filing · original 990 ↗
$4,446,321$3,671,498 $7,176,805$3,438,643 $4,381,821$64,500 $96,02750-
2022 · Form 990 period ending 2023-06-30 · view filing · original 990 ↗
$5,757,160$4,146,085 $6,312,765$2,663,820 $5,701,038$15,686 $98,66537-
2021 · Form 990 period ending 2022-06-30 · view filing · original 990 ↗
$4,762,372$3,077,628 $5,365,303$1,052,745 $4,723,107$39,265 $96,88229-
2020 · Form 990 period ending 2021-06-30 · view filing · original 990 ↗
$3,925,271$2,991,615 $2,950,099-$631,999 $3,901,059$24,212 $96,45837-
2019 · Form 990 period ending 2020-06-30 · view filing · original 990 ↗
$3,721,631$3,310,362 $2,213,209-$1,565,655 $3,686,130$35,501 $151,74537-
2018 · Form 990 period ending 2019-06-30 · view filing · original 990 ↗
$3,357,751$2,874,839 $1,320,407-$1,976,924 $3,305,264$52,487 $79,06449-

Funders of this organization

1 grantor reported grants to this organization, $6,000 in all, tax years 2022 to 2022. Exact: the grantor wrote this organization's EIN. Fuzzy: the grantor wrote only a name (foundations' 990-PF has no EIN field), matched to the same or a near-identical name in the same state; the name as filed is shown. From the latest return for each grantor and year, so amended returns aren't counted twice. CSV

GrantorTypeMatchYears givenGrantsTotalLatest yearLatest year's amountGrants
SHARE OUR STRENGTH Public charity Exact 2022 1$6,000 2022$6,000
show

Similar organizations

Ranked without any AI: same NTEE code first, then the same NTEE group; then revenue within 2x, 5x or 10x; then the same state; then similar name and mission text. Same state only · More (100)

OrganizationStateNTEELatest revenueLatest expensesTop-paid titleTop payWhy similar
HORIZON SCIENCE ACADEMY-SPRINGFIELDOHB29 $5,752,378$6,250,145 School Principal$99,500 Same NTEE code B29, revenue within 2x, same state, similar mission
NOBLE ACADEMY CLEVELAND INCOHB29 $6,242,109$5,477,864 School Principal$87,000 Same NTEE code B29, revenue within 2x, same state, similar mission
HORIZON SCIENCE ACADEMY-CLEVELAND MIDDLE SCHOOLOHB29 $4,793,134$4,404,723 School Principal$97,000 Same NTEE code B29, revenue within 2x, same state, similar name
CLEVELAND ARTS AND SOCIAL SCIENCE ACADEMYOHB29 $5,908,518$5,887,522 Board Secretary$1,339 Same NTEE code B29, revenue within 2x, same state
MIDDLEBURY ACADEMYOHB29 $3,572,809$3,570,002 Board President$2,385 Same NTEE code B29, revenue within 2x, same state
STEPSTONE ACADEMYOHB29 $3,744,139$2,975,568 Board President$0 Same NTEE code B29, revenue within 2x, same state
MENLO PARK ACADEMYOHB29 $4,339,845$11,154,190 Board Member$0 Same NTEE code B29, revenue within 2x, same state
INTERNATIONAL ACADEMIES OF OHIOOHB29 $4,088,870$4,251,225 DIRECTOR$157,688 Same NTEE code B29, revenue within 2x, same state, similar mission
EAST PREPARATORY ACADEMYOHB29 $3,547,290$3,431,807 Board Member$4,500 Same NTEE code B29, revenue within 2x, same state
SOUTH SCIOTO ACADEMYOHB29 $3,745,129$3,745,129 President$0 Same NTEE code B29, revenue within 2x, same state
NOBLE ACADEMY-COLUMBUS INCOHB29 $4,417,308$5,490,085 PRINCIPAL$83,500 Same NTEE code B29, revenue within 2x, same state
BELLA ACADEMY OF EXCELLENCEOHB29 $4,102,011$3,979,236 Treasurer$0 Same NTEE code B29, revenue within 2x, same state
YOUNGSTOWN ACADEMY OF EXCELLENCEOHB29 $3,568,636$3,086,045 Board Member$1,500 Same NTEE code B29, revenue within 2x, same state
HOPE ACADEMY NORTHWEST CAMPUSOHB29 $5,103,561$5,086,878 Board Member$875 Same NTEE code B29, revenue within 2x, same state
CITIZENS LEADERSHIP ACADEMYOHB29 $6,376,168$4,682,474 Principal$107,410 Same NTEE code B29, revenue within 2x, same state
RICHLAND SCHOOL AT RICHLAND ACADEMYOHB29 $4,464,003$4,820,206 Superintendent$94,170 Same NTEE code B29, revenue within 2x, same state
ZENITH ACADEMY - EASTOHB29 $4,633,271$4,666,201 Board Member$1,250 Same NTEE code B29, revenue within 2x, same state
FOUNDATION ACADEMY INCORPORATEDOHB29 $5,842,247$5,651,084 Board Member$1,250 Same NTEE code B29, revenue within 2x, same state
PATHFINDER CAREER ACADEMY OF OHIOOHB29 $4,108,439$4,110,293 Board Chair$1,125 Same NTEE code B29, revenue within 2x, same state
MOUNT AUBURN PREPARATORY ACADEMYOHB29 $4,978,751$5,866,947 Board Chairman$1,125 Same NTEE code B29, revenue within 2x, same state
PERFORMANCE ACADEMY EASTLANDOHB29 $4,521,208$4,521,208 Chair$0 Same NTEE code B29, revenue within 2x, same state
MANSFIELD PREPARATORY ACADEMY INCOHB29 $6,558,355$6,767,451 Board Member$1,375 Same NTEE code B29, revenue within 2x, same state
IMAGINE COLUMBUS PRIMARY ACADEMYOHB29 $4,222,018$4,250,388 PRESIDENT$0 Same NTEE code B29, revenue within 2x, same state
ORCHARD PARK ACADEMYOHB29 $5,457,214$5,631,438 Board President$1,000 Same NTEE code B29, revenue within 2x, same state
WESTSIDE ACADEMY INCOHB29 $4,501,832$5,192,833 DIRECTOR$104,506 Same NTEE code B29, revenue within 2x, same state

Who funds organizations like this

Grantors that funded the 100 most similar organizations. Ranked by total given to them. Foundations (990-PF) and donor-advised fund sponsors only. Same matching as Funders above (by EIN, or by name for foundations).

GrantorTypeTotal givenGrantsOrganizations fundedYearsWhich ones
COMMUNITY FOUNDATION OF GREATER MEMPHIS INC DAF sponsor$9,717,09558 32015–2024 PROMISE ACADEMY; BELIEVE MEMPHIS ACADEMY; MEMPHIS MERIT ACADEMY
DAYTON FOUNDATION DAF sponsor$7,965,37014 12010–2024 DAYTON EARLY COLLEGE ACADEMY INC
FIDELITY INVESTMENTS CHARITABLE GIFT FUND DAF sponsor$2,396,80116 72016–2024 DAYTON EARLY COLLEGE ACADEMY INC; ACADEMY FOR SCIENCE AND DESIGN CHARTER SCHOOL; DUAL IMMERSION ACADEMY INCORPORATED; BRILLANTE ACADEMY and 3 more
CONNOR GROUP FOUNDATION Private foundation$1,929,7116 12015–2020 DAYTON EARLY COLLEGE ACADEMY INC
FLEETWOOD FOUNDATION INC Private foundation$1,331,37211 12021–2023 PROMISE ACADEMY
CHARTER FUND INC Private foundation$1,208,0007 32021–2024 BRILLANTE ACADEMY; MEMPHIS MERIT ACADEMY; BELIEVE MEMPHIS ACADEMY
VANGUARD CHARITABLE ENDOWMENT PROGRAM DAF sponsor$716,0005 22020–2024 DAYTON EARLY COLLEGE ACADEMY INC; CRETE ACADEMY
DAYTON FOUNDATION DEPOSITORY DAF sponsor$641,95211 12009–2024 DAYTON EARLY COLLEGE ACADEMY INC
COLUMBUS FOUNDATION DAF sponsor$503,15211 42013–2024 GRAHAM EXPEDITIONARY MIDDLE SCHOOL; NOBLE ACADEMY-COLUMBUS INC; DAYTON EARLY COLLEGE ACADEMY INC; ARTS IN COLLEGE PREPARATORY ACADEMY
THE CLEVELAND FOUNDATION DAF sponsor$468,4103 12014–2016 STEPSTONE ACADEMY
J R HYDE III FOUNDATION Private foundation$431,9666 22020–2024 BELIEVE MEMPHIS ACADEMY; MEMPHIS MERIT ACADEMY
CHRISTIAN COMMUNITY FOUNDATION OF MEMPHIS AND THE MID-SOUTH INC DAF sponsor$412,50013 22010–2024 BELIEVE MEMPHIS ACADEMY; PROMISE ACADEMY
THE SCHIEWETZ FOUNDATION INC Private foundation$410,0001 12019–2019 DAYTON EARLY COLLEGE ACADEMY INC
TROY FOUNDATION DAF sponsor$349,36914 12012–2024 DAYTON EARLY COLLEGE ACADEMY INC
THE COLORADO HEALTH FOUNDATION Private foundation$342,1014 12014–2019 ACADEMY 360

The full list · all similar organizations

Where the money went

Every expense line on each return, biggest first: Form 990 Part IX (with its program, management and fundraising columns), 990-EZ Part I, or 990-PF Part I. Event marks lines the organization itself describes as events. “Events” in each summary adds those lines, conferences and meetings, and the direct costs of fundraising events. Unusual is not the same as improper. Many of these patterns have ordinary explanations. Check the filing.

2024 · Form 990 · $4,275,079 spent · pay $2,454,677 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $2,027,561$2,027,561-- 47.4%
Fees: management $703,056$703,056-- 16.4%
Other (as described)Material and Supplies $319,494$319,494-- 7.5%
Other (as described)Contracted Food Services $191,126$191,126-- 4.5%
Pension plan contributions $183,735$183,735-- 4.3%
Occupancy $169,325$169,325-- 4.0%
Depreciation and depletion $167,693$167,693-- 3.9%
Payroll taxes $161,381$161,381-- 3.8%
All other expenses $149,597$149,597-- 3.5%
Pay: officers, directors, trustees, key employees $82,000$82,000-- 1.9%
Fees: other services $44,232$44,232-- 1.0%
Advertising and promotion $26,758$26,758-- 0.6%
Travel $24,340$24,340-- 0.6%
Travel or entertainment for public officials $12,739$12,739-- 0.3%
Other (as described)Tuition Other Similar Payments $12,042$12,042-- 0.3%
Total$4,275,079100%

View the filing

2023 · Form 990 · $3,671,498 spent · pay $2,226,532 · grants $0 · events $12,976
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $1,561,849$1,561,849-- 42.5%
Fees: management $605,772$605,772-- 16.5%
Pension plan contributions $227,493$227,493-- 6.2%
Other employee benefits $214,335$214,335-- 5.8%
Other (as described)Contracted Food Services $190,058$190,058-- 5.2%
Depreciation and depletion $187,384$187,384-- 5.1%
Other (as described)Material and Supplies $140,779$140,779-- 3.8%
Occupancy $129,774$129,774-- 3.5%
Payroll taxes $126,828$126,828-- 3.5%
All other expenses $117,876$117,876-- 3.2%
Pay: officers, directors, trustees, key employees $96,027$96,027-- 2.6%
Advertising and promotion $36,056$36,056-- 1.0%
Travel $14,455$14,455-- 0.4%
Conferences, conventions and meetings $12,976$12,976-- 0.4%
Fees: other services $9,836$9,836-- 0.3%
Total$3,671,498100%

View the filing

2022 · Form 990 · $4,146,085 spent · pay $2,260,076 · grants $0 · events $16,892
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $1,659,762$1,659,762-- 40.0%
Fees: management $739,329$739,329-- 17.8%
Depreciation and depletion $404,699$404,699-- 9.8%
Pension plan contributions $310,939$310,939-- 7.5%
Other (as described)Contracted Food Services $203,677$203,677-- 4.9%
Other (as described)Material and Supplies $195,151$195,151-- 4.7%
Payroll taxes $134,520$134,520-- 3.2%
Occupancy $126,794$126,794-- 3.1%
All other expenses $102,322$102,322-- 2.5%
Pay: officers, directors, trustees, key employees $98,665$98,665-- 2.4%
Other employee benefits $56,190$56,190-- 1.4%
Fees: other services $30,434$30,434-- 0.7%
Interest $25,252$25,252-- 0.6%
Travel $24,650$24,650-- 0.6%
Conferences, conventions and meetings $16,892$16,892-- 0.4%
Advertising and promotion $16,809$16,809-- 0.4%
Total$4,146,085100%

View the filing

2021 · Form 990 · $3,077,628 spent · pay $1,376,446 · grants $0 · events $6,550
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $1,392,628$1,392,628-- 45.3%
Fees: management $609,511$609,511-- 19.8%
Depreciation and depletion $473,114$473,114-- 15.4%
Other (as described)Contracted Food Services $148,214$148,214-- 4.8%
Other (as described)Material and Supplies $140,972$140,972-- 4.6%
Payroll taxes $113,948$113,948-- 3.7%
All other expenses $101,470$101,470-- 3.3%
Occupancy $98,668$98,668-- 3.2%
Pay: officers, directors, trustees, key employees $96,882-$96,882- 3.1%
Interest $64,288$64,288-- 2.1%
Advertising and promotion $44,717$44,717-- 1.5%
Travel $9,280$9,280-- 0.3%
Conferences, conventions and meetings $6,550$6,550-- 0.2%
Fees: other services $4,398$4,398-- 0.1%
Pension plan contributions -$227,012-$227,012-- -7.4%
Total$3,077,628100%

View the filing

2020 · Form 990 · $2,991,615 spent · pay $1,699,489 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $1,064,598$1,064,598-- 35.6%
Fees: management $544,677$544,677-- 18.2%
Occupancy $466,977$466,977-- 15.6%
Pension plan contributions $297,154$297,154-- 9.9%
Other employee benefits $152,458$152,458-- 5.1%
Pay: officers, directors, trustees, key employees $96,458-$96,458- 3.2%
Payroll taxes $88,821$88,821-- 3.0%
All other expenses $71,128$71,128-- 2.4%
Depreciation and depletion $70,908$70,908-- 2.4%
Other (as described)Material and Supplies $59,618$59,618-- 2.0%
Other (as described)Contracted Food Services $48,510$48,510-- 1.6%
Fees: other services $22,225$22,225-- 0.7%
Advertising and promotion $8,083$8,083-- 0.3%
Total$2,991,615100%

View the filing

2019 · Form 990 · $3,310,362 spent · pay $2,000,373 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Other salaries and wages $1,327,310$1,327,310-- 40.1%
Fees: management $458,332$458,332-- 13.8%
Occupancy $456,046$456,046-- 13.8%
Pension plan contributions $373,957$373,957-- 11.3%
Pay: officers, directors, trustees, key employees $151,745-$151,745- 4.6%
Other employee benefits $127,097$127,097-- 3.8%
Other (as described)Material and Supplies $100,528$100,528-- 3.0%
Other (as described)Contracted Food Services $94,075$94,075-- 2.8%
All other expenses $82,848$82,848-- 2.5%
Depreciation and depletion $41,992$41,992-- 1.3%
Advertising and promotion $30,864$30,864-- 0.9%
Payroll taxes $20,264$20,264-- 0.6%
Insurance $15,358$15,358-- 0.5%
Fees: other services $12,607$12,607-- 0.4%
Fees: accounting $9,593$9,593-- 0.3%
Fees: legal $5,051$5,051-- 0.2%
Travel $2,695$2,695-- 0.1%
Total$3,310,362100%

View the filing

2018 · Form 990 · $2,874,839 spent · pay $1,422,510 · grants $0 · events $0
LineAs describedTotalProgramManagementFundraisingShare
Pay: disqualified persons $1,363,099$1,363,099-- 47.4%
Occupancy $502,619$502,619-- 17.5%
Fees: management $482,729$146,954$335,775- 16.8%
Other (as described)Contracted Food Services $158,286$158,286-- 5.5%
Other employee benefits $122,841$122,841-- 4.3%
Other (as described)Material and Supplies $114,532$114,532-- 4.0%
Pay: officers, directors, trustees, key employees $79,064-$79,064- 2.8%
All other expenses $78,378$78,378-- 2.7%
Depreciation and depletion $50,451$50,451-- 1.8%
Fees: other services $28,115$28,115-- 1.0%
Payroll taxes $26,354$26,354-- 0.9%
Insurance $17,189$17,189-- 0.6%
Travel $11,933-$11,933- 0.4%
Fees: legal $8,097$8,097-- 0.3%
Pension plan contributions -$168,848-$168,848-- -5.9%
Total$2,874,839100%

View the filing