Nonprofit · EIN 94-3202572
BERKELEY GEOCHRONOLOGY CENTER
Tax-exempt · BERKELEY, CA 94709
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| March 31, 2026 | 990 | $3,000,316 | $3,073,003 | -$72,687 | $19,216,294 | $305,045 | $18,911,249 |
| March 31, 2025 | 990 | $2,724,569 | $3,019,137 | -$294,568 | $19,213,526 | $229,590 | $18,983,936 |
| March 31, 2024 | 990 | $17,883,963 | $3,156,934 | $14,727,029 | $19,500,666 | $222,162 | $19,278,504 |
| March 31, 2023 | 990 | $5,475,502 | $3,317,398 | $2,158,104 | $4,845,155 | $293,680 | $4,551,475 |
Financial details: 990 for the year ended March 31, 2026
Revenue
- Contributions, gifts and grants
- $2,545,721
- of which government grants
- $983,317
- Program service revenue
- $0
- Investment income
- $48,170
- Net rental income
- $406,425
- Other revenue
- $406,425
Expenses
- Grants and similar amounts paid
- $61,647
- Compensation of officers, directors and key employees
- $428,601
- Other salaries and wages
- $1,082,856
- Salaries, compensation and benefits (total)
- $2,076,107
- Professional fundraising fees
- $0
- Legal fees
- $1,253
- Accounting fees
- $41,850
- Occupancy
- $212,951
- Travel
- $27,354
- Depreciation
- $269,515
- Program services (functional)
- $2,436,693
- Management and general (functional)
- $636,310
Balance sheet and other
- Total assets, start of year
- $19,213,526
- Total assets, end of year
- $19,216,294
- Total liabilities, end of year
- $305,045
- Net assets, end of year
- $18,911,249
- Land, buildings and equipment
- $1,434,851
- Net assets without donor restrictions
- $17,411,249
- Net assets with donor restrictions
- $1,500,000
- Gross receipts
- $3,000,316
- Employees
- 22
- Year formed
- 1994
- State of legal domicile
- CA
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 March 31, 2026, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| PAUL RENNE | MEMBER/PRES. Trustee or director, Officer | 35 | $212,573 | $69,814 |
| WARREN SHARP | GEOCHRONOLOGIST | 35 | $132,068 | $56,279 |
| ALAN DEINO | GEOCHRONOLOGIST | 35 | $146,955 | $36,615 |
| ROLAND MUNDIL | GEOCHRONOLOGIST | 35 | $121,541 | $41,721 |
| TANIA BOROSTYAN | SEC./TREAS./CFO Officer | 35 | $97,629 | $48,585 |
| WILLIAM CASSATA | GEOCHRONOLOGIST | 35 | $121,011 | $12,979 |
| JOHN CLARKE | BOARD CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| CHARLES BACON | MEMBER Trustee or director | 2 | $0 | $0 |
| DONALD DANA | MEMBER Trustee or director | 1 | $0 | $0 |
| DONALD DEPAOLO | MEMBER Trustee or director | 1 | $0 | $0 |
| GORDON GETTY | MEMBER Trustee or director | 1 | $0 | $0 |
| CHARLES MARSHALL | MEMBER Trustee or director | 1 | $0 | $0 |
| JOHN REA | MEMBER Trustee or director | 1 | $0 | $0 |
| NAOMA TATE | MEMBER Trustee or director | 1 | $0 | $0 |
990 for the year ended March 31, 2025: 15 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| PAUL RENNE | MEMBER/PRESIDENT Trustee or director, Officer | 35 | $206,381 | $75,948 |
| WARREN SHARP | GEOCHRONOLOGIST Highest-paid employee | 35 | $128,222 | $64,154 |
| ALAN DEINO | GEOCHRONOLOGIST Highest-paid employee | 35 | $142,675 | $38,500 |
| ROLAND MUNDIL | GEOCHRONOLOGIST Highest-paid employee | 35 | $118,001 | $48,295 |
| TANIA BOROSTYAN | SEC/TREAS, BUS. MGR/CFO Officer | 35 | $87,195 | $44,875 |
| WILLIAM CASSATA | GEOCHRONOLOGIST Highest-paid employee | 35 | $114,526 | $14,355 |
| ERICA MORALES THRU 124-624 | SEC/TREAS, BUS. MGR/CFO Officer | 35 | $42,676 | $4,680 |
| JOHN CLARKE | BOARD CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| CHARLES BACON | MEMBER Trustee or director | 2 | $0 | $0 |
| DONALD DANA | MEMBER Trustee or director | 1 | $0 | $0 |
| DONALD DEPAOLO | MEMBER Trustee or director | 1 | $0 | $0 |
| GORDON GETTY | MEMBER Trustee or director | 1 | $0 | $0 |
| CHARLES MARSHALL | MEMBER Trustee or director | 1 | $0 | $0 |
| JOHN REA | MEMBER Trustee or director | 1 | $0 | $0 |
| NAOMA TATE | MEMBER Trustee or director | 1 | $0 | $0 |
990 for the year ended March 31, 2024: 13 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| PAUL RENNE | MEMBER/PRESIDENT Trustee or director, Officer | 35 | $200,370 | $58,879 |
| WARREN SHARP | GEOCHRONOLOGIST Highest-paid employee | 35 | $124,487 | $56,816 |
| ALAN DEINO | GEOCHRONOLOGIST Highest-paid employee | 35 | $138,520 | $38,488 |
| ROLAND MUNDIL | GEOCHRONOLOGIST Highest-paid employee | 35 | $114,564 | $43,320 |
| ERICA MORALES | SEC/TREAS., BUS. MGR/CFO Officer | 35 | $92,025 | $10,004 |
| JOHN CLARKE | BOARD CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| CHARLES BACON | MEMBER Trustee or director | 2 | $0 | $0 |
| DONALD DANA | MEMBER Trustee or director | 1 | $0 | $0 |
| DONALD DEPAOLO | MEMBER Trustee or director | 1 | $0 | $0 |
| GORDON GETTY | MEMBER Trustee or director | 1 | $0 | $0 |
| CHARLES MARSHALL | MEMBER Trustee or director | 1 | $0 | $0 |
| JOHN REA | MEMBER Trustee or director | 1 | $0 | $0 |
| NAOMA TATE | MEMBER Trustee or director | 1 | $0 | $0 |
990 for the year ended March 31, 2023: 14 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| PAUL RENNE | MEMBER/PRESIDENT Trustee or director, Officer | 35 | $193,848 | $58,233 |
| ALAN DEINO | GEOCHRONOLOGIST Highest-paid employee | 35 | $129,624 | $38,487 |
| WARREN SHARP | GEOCHRONOLOGIST Highest-paid employee | 35 | $111,433 | $54,786 |
| ROLAND MUNDIL | GEOCHRONOLOGIST Highest-paid employee | 35 | $110,835 | $42,244 |
| FRANCOISE SPAULDING-KELLER | SEC/TREAS., BUS. MGR/CFO Officer | 35 | $74,679 | $6,400 |
| ERICA MORALES 622-1222 | SEC/TREAS., BUS. MGR/CFO Officer | 35 | $49,772 | $2,690 |
| JOHN CLARKE | BOARD CHAIR Trustee or director, Officer | 2 | $0 | $0 |
| CHARLES BACON | MEMBER Trustee or director | 2 | $0 | $0 |
| DONALD DANA | MEMBER Trustee or director | 1 | $0 | $0 |
| DONALD DEPAOLO | MEMBER Trustee or director | 1 | $0 | $0 |
| GORDON GETTY | MEMBER Trustee or director | 1 | $0 | $0 |
| CHARLES MARSHALL | MEMBER Trustee or director | 1 | $0 | $0 |
| JOHN REA | MEMBER Trustee or director | 1 | $0 | $0 |
| NAOMA TATE | MEMBER Trustee or director | 1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 2455 RIDGE RD, BERKELEY, CA 94709-1211
- Principal officer (990 for 2025)
- PAUL RENNE, 2455 RIDGE ROAD, BERKELY, CA 947091211
- Signed the 990
- PAUL RENNE, President
- Phone
- (510) 644-9200
- Website
- WWW.BGC.ORG
- Return prepared by
- Linked Accounting LLP
California records
California keeps its own records of charities and corporations. Search them by EIN 94-3202572 or by the name BERKELEY GEOCHRONOLOGY CENTER.
- 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
BERKELEY GEOCHRONOLOGY CENTER (BGC) IS DEDICATED TO ESTABLISHING THE HISTORY OF THE EARTH, ITS VARIOUS INHABITANTS, AND ITS INTERACTIONS WITH THE REST OF OUR SOLAR SYSTEM, THROUGHOUT THE 4.6 BILLION YEARS OF OUR PLANET'S EXISTENCE. THIS MISSION IS CENTERED ON DEVELOPMENT, REFINEMENT, AND APPLICATION OF GEOLOGICAL DATING METHODS.
Program accomplishments
- GENERAL RESEARCH - BGC'S PRIMARY ACTIVITIES INCLUDE RESEARCH ON THE NATURE AND TIMING OF EVENTS IN THE HISTORY OF EARTH AND EVOLUTION OF INHABITANTS, REFINEMENT OF TECHNOLOGY, LABORATORY METHODS, AND DISSEMINATION OF RESULTS THROUGH PUBLICATIONS AND OTHER MEDIA.Expenses $1,816,719
- COLLABORATIVE RESEARCH - RESEARCH INITIATED BY SCIENTISTS AT OTHER INSTITUTIONS WHOSE STUDIES REQUIRE GEOCHRONOLOGICAL DATA ARE OFTEN UNDERTAKEN BY BGC SCIENTISTS ON A COLLABORATIVE BASIS.Expenses $572,461
- EDUCATIONAL OUTREACH - BGC CONDUCTS EDUCATIONAL OUTREACH WITH GRADUATE STUDENTS WHOSE RESEARCH INVOLVES GEOCHRONOLOGY, AND PROVIDES RESEARCH EXPERIENCE FOR UNDERGRADUATE STUDENTS. BGC SCIENTISTS SERVE AS RESEARCH ADVISORS TO GRADUATE STUDENTS AT UCB AND OTHER UNIVERSITIES BOTH NATIONALLY AND INTERNATIONALLY.Expenses $47,513 · grants $61,647
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 March, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | March 31, 2026 | August 17, 2026 | 990 on file |
| 2024 | March 31, 2025 | August 15, 2025 | 990 on file |
| 2023 | March 31, 2024 | August 15, 2024 | 990 on file |
IRS record
- EIN
- 94-3202572
- 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
- 1994
- Accounting year ends
- March
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U052)
- Assets (IRS master file)
- $19,216,294
- Income (IRS master file)
- $3,000,316
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | March 2026 | $3,000,316 | $3,073,003 | $19,216,294 | XML |
| 990 | March 2025 | $2,724,569 | $3,019,137 | $19,213,526 | XML |
| 990 | March 2024 | $17,883,963 | $3,156,934 | $19,500,666 | XML |
| 990 | March 2023 | $5,475,502 | $3,317,398 | $4,845,155 | XML |
| 990 | March 2022 | $1,536,625 | $3,098,393 | $3,272,746 | IRS |
| 990 | March 2021 | – | – | – | IRS |
| 990 | March 2020 | – | – | – | IRS |
| 990 | March 2019 | – | – | – | IRS |
| 990 | March 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 94-3202572).
Questions about BERKELEY GEOCHRONOLOGY CENTER
- What is the EIN of BERKELEY GEOCHRONOLOGY CENTER?
- The employer identification number (EIN) of BERKELEY GEOCHRONOLOGY CENTER is 94-3202572.
- Is BERKELEY GEOCHRONOLOGY CENTER tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1994.
- Are donations to BERKELEY GEOCHRONOLOGY CENTER tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does BERKELEY GEOCHRONOLOGY CENTER 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 BERKELEY GEOCHRONOLOGY CENTER due?
- The return for tax year 2026 (the year ending March 31, 2027) is due August 16, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did BERKELEY GEOCHRONOLOGY CENTER last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended March 2026.
- Who is the principal officer of BERKELEY GEOCHRONOLOGY CENTER?
- The 990 for the year ended March 31, 2026 names PAUL RENNE.
- Who are the officers and directors of BERKELEY GEOCHRONOLOGY CENTER?
- The 990 for the year ended March 31, 2026 lists 14 people; 6 received compensation from the organization, the highest $212,573 (PAUL RENNE, MEMBER/PRES.).
- How much revenue does BERKELEY GEOCHRONOLOGY CENTER have?
- On its 990 for the year ended March 31, 2026 it reported revenue of $3,000,316, expenses of $3,073,003 and total assets of $19,216,294 at year end.
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