Nonprofit · EIN 26-2637707
GMTO CORPORATION
Tax-exempt · PASADENA, CA 91101
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $46,688,213 | $36,697,172 | $9,991,041 | $474,102,926 | $13,477,032 | $460,625,894 |
| June 30, 2024 | 990 | $21,214,460 | $46,043,471 | -$24,829,011 | $460,859,174 | $10,248,989 | $450,610,185 |
| June 30, 2023 | 990 | $194,662,618 | $36,380,093 | $158,282,525 | $488,723,180 | $27,326,631 | $461,396,549 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $45,811,364
- of which government grants
- $5,818,841
- Program service revenue
- $0
- Investment income
- $876,849
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $2,097,547
- Other salaries and wages
- $14,350,905
- Salaries, compensation and benefits (total)
- $20,859,927
- Professional fundraising fees
- $0
- Legal fees
- $61,137
- Accounting fees
- $138,865
- Occupancy
- $739,053
- Travel
- $395,825
- Depreciation
- $1,712,384
- Program services (functional)
- $28,638,095
- Management and general (functional)
- $6,260,775
- Fundraising (functional)
- $1,798,302
Balance sheet and other
- Total assets, start of year
- $460,859,174
- Total assets, end of year
- $474,102,926
- Total liabilities, end of year
- $13,477,032
- Net assets, end of year
- $460,625,894
- Land, buildings and equipment
- $18,310,009
- Publicly traded securities
- $7,483,127
- Net assets without donor restrictions
- $298,006,242
- Net assets with donor restrictions
- $162,619,652
- Gross receipts
- $46,688,213
- Employees
- 94
- Volunteers
- 16
- Year formed
- 2007
- State of legal domicile
- DE
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| ROBERT SHELTON | PRESIDENT Officer | 40 | $518,846 | $90,107 |
| WILLIAM BURGETT | PROJECT MANAGER Key employee | 40 | $314,699 | $77,299 |
| REBECCA BERNSTEIN | CHIEF SCIENTIST Highest-paid employee | 40 | $311,880 | $69,137 |
| ALAN GORDON | CFO & VP OF BUSINESS OPERATIONS Officer | 40 | $284,799 | $88,769 |
| KEVIN MILLS | VP FOR LEGAL AFFAIRS & GEN. COUNSEL Officer | 40 | $268,511 | $95,063 |
| GLENN BROSSUS | DEPUTY PROJECT MANAGER Key employee | 40 | $265,097 | $96,495 |
| FRANK GROARK | DEPT. OPTICS & OPTICAL METROLOGY MGR Highest-paid employee | 40 | $251,349 | $88,926 |
| BRUCE BIGELOW | SITE, ENCLOSURE, FACILITIES MGR Highest-paid employee | 40 | $251,603 | $63,184 |
| SAMUEL PARK | TELESCOPE STRUCTURES MANAGER Highest-paid employee | 40 | $237,231 | $75,918 |
| JENNIFER ECCLES | VP FOR DEVEL. & EXT. RELATIONS Highest-paid employee | 40 | $252,629 | $48,055 |
| WALTER MASSEY | CHAIR, BOARD OF DIRECTORS Trustee or director, Officer | 1 | $0 | $0 |
| TAFT ARMANDROFF | VICE CHAIR, BOARD OF DIRECTORS Trustee or director, Officer | 1 | $0 | $0 |
| WAYNE ALEXANDER | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JOHN ARNOLD | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JACK BALDAUF THRU 0225 | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
12 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| COSTAS GEORGHIADES FROM 0425 | BOARD MEMBER Trustee or director | 1 | $0 |
| BUELL JANNUZI | BOARD MEMBER Trustee or director | 1 | $0 |
| VICKY KALOGERA FROM 0125 | BOARD MEMBER Trustee or director | 1 | $0 |
| LISA KEWLEY | BOARD MEMBER Trustee or director | 1 | $0 |
| JOHN MULCHAEY | BOARD MEMBER Trustee or director | 1 | $0 |
| BYEONG-GON PARK | BOARD MEMBER Trustee or director | 1 | $0 |
| CHAN PARK | BOARD MEMBER Trustee or director | 1 | $0 |
| SARAH PEARCE | BOARD MEMBER Trustee or director | 1 | $0 |
| BRIAN SCHMIDT FROM 1024 | BOARD MEMBER Trustee or director | 1 | $0 |
| VITOR DE SOUZA | BOARD MEMBER Trustee or director | 1 | $0 |
| RANDY STRINGER | BOARD MEMBER Trustee or director | 1 | $0 |
| CHRIS TINNEY | BOARD MEMBER Trustee or director | 1 | $0 |
990 for the year ended June 30, 2024: 26 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| ROBERT SHELTON | PRESIDENT Officer | 40 | $506,774 | $84,774 |
| REBECCA BERNSTEIN | PROJECT SCIENTIST Highest-paid employee | 40 | $304,380 | $67,121 |
| WILLIAM BURGETT | PROJECT MANAGER Key employee | 40 | $298,986 | $68,680 |
| ALAN GORDON | CFO & VP OF BUSINESS OPERATIONS Officer | 40 | $277,861 | $84,457 |
| GLENN BROSSUS | DEPUTY PROJECT MANAGER Key employee | 40 | $257,772 | $89,621 |
| FRANK GROARK | DEPUTY OPT. & OPTICAL METROLOGY MGR. Highest-paid employee | 40 | $247,134 | $84,649 |
| RICHARD DEMERS | WAVEFRONT SENSING & CONTROL MANAGER Highest-paid employee | 40 | $251,954 | $61,646 |
| BRUCE BIGELOW | SITE, ENCLOSURE, FACILITIES MGR Highest-paid employee | 40 | $246,956 | $60,674 |
| JENNIFER ECCLES | VP FOR DEVELOPMENT & EXTERNAL RELAT. Highest-paid employee | 40 | $255,487 | $47,152 |
| KEVIN MILLS | VP FOR LEGAL AFFAIRS & GEN. COUNSEL Officer | 40 | $204,033 | $61,749 |
| WALTER MASSEY | CHAIR, BOARD OF DIRECTORS Trustee or director, Officer | 1 | $0 | $0 |
| TAFT ARMANDROFF | VICE CHAIR, BOARD OF DIRECTORS Trustee or director, Officer | 1 | $0 | $0 |
| WAYNE ALEXANDER | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JOHN ARNOLD | BOARD MEMBER (FROM 2/24) Trustee or director | 1 | $0 | $0 |
| JACK BALDAUF | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| BUELL JANNUZI | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| LISA KEWLEY | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JOHN MULCHAEY | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| BYEONG-GON PARK | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| CHAN PARK | BOARD MEMBER (FROM 10/23) Trustee or director | 1 | $0 | $0 |
| SUNG HYUN PARK | BOARD MEMBER (THRU 10/23) Trustee or director | 1 | $0 | $0 |
| SARAH PEARCE | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JOAQUIN RUIZ | BOARD MEMBER (THRU 10/23) Trustee or director | 1 | $0 | $0 |
| VITOR DE SOUZA | BOARD MEMBER (FROM 2/24) Trustee or director | 1 | $0 | $0 |
| RANDY STRINGER | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| CHRIS TINNEY | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
990 for the year ended June 30, 2023: 28 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| ROBERT SHELTON | PRESIDENT Officer | 40 | $494,519 | $78,776 |
| REBECCA BERNSTEIN | PROJECT SCIENTIST Highest-paid employee | 40 | $337,161 | $62,536 |
| JAMES FANSON | PROJECT MANAGER (THRU 03/2023) Key employee | 40 | $327,111 | $70,707 |
| ALAN GORDON | TREASURER / CFO / VP, BUSINESS OPS. Officer | 40 | $265,862 | $80,590 |
| WILLIAM BURGETT | INTERIM PROJECT MANAGER Key employee | 40 | $263,610 | $64,715 |
| GLENN BROSSUS | INTERIM DEPUTY PROJECT MANAGER Highest-paid employee | 40 | $239,113 | $83,244 |
| FRANK GROARK | DEPUTY OPT. & OPTICAL METROLOGY MGR. Highest-paid employee | 40 | $238,285 | $79,866 |
| RICK DEMERS | WAVEFRONT SENSING & CTRL. MANAGER Highest-paid employee | 40 | $243,651 | $59,343 |
| BRUCE BIGELOW | SITE, ENCLOSURE, FACILITIES MGR Highest-paid employee | 40 | $238,048 | $58,253 |
| JENNIFER ECCLES - INTERIM SEC | (10/22-3/23) / VP, DEV. & EX. REL. Officer | 40 | $233,091 | $43,316 |
| SARA LEE KELLER | SEC. / GEN COUNSEL (THRU 09/2022) Officer | 40 | $195,569 | $60,527 |
| WALTER MASSEY | CHAIR, BOARD OF DIRECTORS Trustee or director, Officer | 1 | $0 | $0 |
| TAFT ARMANDROFF | VICE CHAIR, BOARD OF DIRECTORS Trustee or director, Officer | 1 | $0 | $0 |
| CHARLES ALCOCK | BOARD MEMBER (THRU 07/2022) Trustee or director | 1 | $0 | $0 |
| WAYNE ALEXANDER | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JACK BALDAUF | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| BUELL JANNUZI | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| LISA KEWLEY | BOARD MEMBER (FROM 07/2022) Trustee or director | 1 | $0 | $0 |
| JOHN MULCHAEY | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| CLAUDIA LUCIA MENDES DE OLIVEIRA | BOARD MEMBER (THRU 10/2022) Trustee or director | 1 | $0 | $0 |
| MICHAEL MCCARTHY | BOARD MEMBER (THRU 10/2022) Trustee or director | 1 | $0 | $0 |
| BYEONG-GON PARK | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| SUNG HYUN PARK | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| SARAH PEARCE | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| JOAQUIN RUIZ | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| RANDY STRINGER | BOARD MEMBER (FROM 10/2022) Trustee or director | 1 | $0 | $0 |
| CHRIS TINNEY | BOARD MEMBER Trustee or director | 1 | $0 | $0 |
| KEVIN MILLS - SEC VP LEGAL | AFFAIRS / GEN COUNSEL (FROM 04/2023) Officer | 40 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 300 N LAKE AVE FL 14, PASADENA, CA 91101-4164
- In care of
- % ALAN GORDON
- Principal officer (990 for 2024)
- DANIEL JAFFE, 300 NORTH LAKE AVENUE 14TH FLOOR, PASADENA, CA 91101
- Signed the 990
- ALAN GORDON, CFO
- Phone
- (626) 204-0544
- Website
- WWW.GIANTMAGELLAN.ORG
- Return prepared by
- GRANT THORNTON ADVISORS LLC
California records
California keeps its own records of charities and corporations. Search them by EIN 26-2637707 or by the name GMTO CORPORATION.
- Attorney General, Registry of Charities and Fundraisers
- Registration status and filed reports (CT-TR-1, RRF-1)
- Secretary of State, bizfile Online
- Corporation status, entity number, agent for service
- Franchise Tax Board
- Entity status letter (state tax exemption, good standing)
Mission
GMTO CORPORATION IS A COLLABORATIVE EFFORT BETWEEN UNIVERSITIES AND RESEARCH INSTITUTIONS TO BUILD A NEXT GENERATION EXTREMELY LARGE TELESCOPE FOR ASTRONOMICAL RESEARCH.
Program accomplishments
- THE PURPOSE OF THE CORPORATION IS TO UNDERTAKE THE DESIGN, DEVELOPMENT, CONSTRUCTION AND OPERATION OF THE GIANT MAGELLAN TELESCOPE ("GMT"), A STATE-OF-THE-ART NEXT GENERATION ASTRONOMICAL TELESCOPE, AS A COLLABORATIVE EFFORT BETWEEN UNIVERSITIES AND RESEARCH ORGANIZATIONS. ALL CONTRIBUTIONS AND ALL EXPENSES ARE GEARED TOWARD THE FULFILLMENT OF THAT PURPOSE. DURING THE FISCAL YEAR ENDING JUNE 30, 2025, GMTO RECEIVED OFFICIAL NOTICE FROM THE NATIONAL SCIENCE FOUNDATION THAT THE GMT WAS APPROVED TO ADVANCE INTO THE FINAL DESIGN PHASE. GMTO ALSO CONTINUED ON THE WORK ON ITS PRIMARY MIRROR SEGMENTS AND DESIGN WORK ON MAJOR SUBSYSTEMS, INCLUDING PROTOTYPING, AND UNDERWENT VARIOUS DESIGN REVIEWS.Expenses $28,638,095
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990 on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990 on file |
IRS record
- EIN
- 26-2637707
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (170(b)(1)(A)(vi))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 2009
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U31)
- Assets (IRS master file)
- $474,102,926
- Income (IRS master file)
- $46,688,213
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $46,688,213 | $36,697,172 | $474,102,926 | IRS |
| 990 | June 2024 | $21,214,460 | $46,043,471 | $460,859,174 | IRS |
| 990 | June 2023 | $194,662,618 | $36,380,093 | $488,723,180 | XML |
| 990 | June 2022 | $32,220,104 | $37,165,448 | $321,703,747 | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990 | June 2020 | – | – | – | IRS |
| 990 | June 2019 | – | – | – | IRS |
| 990 | June 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 26-2637707).
Questions about GMTO CORPORATION
- What is the EIN of GMTO CORPORATION?
- The employer identification number (EIN) of GMTO CORPORATION is 26-2637707.
- Is GMTO CORPORATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2009.
- Are donations to GMTO CORPORATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does GMTO CORPORATION file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of GMTO CORPORATION due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did GMTO CORPORATION last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended June 2025.
- Who is the principal officer of GMTO CORPORATION?
- The 990 for the year ended June 30, 2025 names DANIEL JAFFE.
- Who are the officers and directors of GMTO CORPORATION?
- The 990 for the year ended June 30, 2025 lists 27 people; 10 received compensation from the organization, the highest $518,846 (ROBERT SHELTON, PRESIDENT).
- How much revenue does GMTO CORPORATION have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $46,688,213, expenses of $36,697,172 and total assets of $474,102,926 at year end.
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All nonprofits in PASADENA · California · Science and technology