Nonprofit · EIN 30-0100604
STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC
Also known as SILVER CENTURY FOUNDATION
Tax-exempt · PRINCETON, NJ 08540
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990-PF | $317,074 | $226,310 | $90,764 | $3,602,105 | $0 | $3,602,105 |
| December 31, 2024 | 990-PF | $186,686 | $233,025 | -$46,339 | $3,511,496 | $0 | $3,511,496 |
| December 31, 2023 | 990-PF | $145,122 | $249,639 | -$104,517 | $3,557,837 | $0 | $3,557,837 |
Financial details: 990-PF for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $0
- Dividends
- $180,790
- Net gain from sales of assets
- $136,284
Expenses
- Grants and similar amounts paid
- $98,500
- Compensation of officers, directors and key employees
- $0
- Disbursements for charitable purposes
- $190,335
- Excise tax on investment income
- $3,941
Balance sheet and other
- Total assets, start of year
- $3,511,496
- Total assets, end of year
- $3,602,105
- Total liabilities, end of year
- $0
- Net assets, end of year
- $3,602,105
- Fair market value of assets
- $4,111,142
- Qualifying distributions
- $190,335
- Net investment income
- $317,074
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-PF for the year ended December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| KATHERINE M KLOTZBURGER Ph D 2319 Windrow Drive, Princeton, NJ 085405020 | PRESIDENT | 0 | $0 |
| Barbara Melnikov 2319 Windrow Drive, Princeton, NJ 085405020 | Secretary | 0 | $0 |
| JOAN GERBERDING 2319 Windrow Drive, Princeton, NJ 085405020 | Officer | 0 | $0 |
| Fredrick Cammerzell III 2319 Windrow Drive, Princeton, NJ 085405020 | Officer | 0 | $0 |
990-PF for the year ended December 31, 2024: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| KATHERINE M KLOTZBURGER Ph D 2319 Windrow Drive, Princeton, NJ 085405020 | PRESIDENT | 0 | $0 |
| Barbara Melnikov 2319 Windrow Drive, Princeton, NJ 085405020 | Secretary | 0 | $0 |
| JOAN GERBERDING 2319 Windrow Drive, Princeton, NJ 085405020 | Officer | 0 | $0 |
| Fredrick Cammerzell III 2319 Windrow Drive, Princeton, NJ 085405020 | Officer | 0 | $0 |
990-PF for the year ended December 31, 2023: 4 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| KATHERINE M KLOTZBURGER Ph D 2319 Windrow Drive, Princeton, NJ 085405020 | PRESIDENT | 1 | $0 |
| Barbara Melnikov 2319 Windrow Drive, Princeton, NJ 085405020 | Secretary | 1 | $0 |
| JOAN GERBERDING 2319 Windrow Drive, Princeton, NJ 085405020 | Officer | 1 | $0 |
| Fredrick Cammerzell III 2319 Windrow Drive, Princeton, NJ 085405020 | Officer | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 2319 WINDROW DR, PRINCETON, NJ 08540-5020
- In care of
- % KATHERINE M KLOTZBURGER
- Signed the 990-PF
- KATHERINE KLOTZBERGER, PRESIDENT
- Phone
- (609) 430-4790
- Website
- www.silvercentury.org
- Return prepared by
- WITHUM SMITH BROWN PC
What it must file and when
IRS records say it files Not required. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990-PF on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990-PF on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990-PF on file |
IRS record
- EIN
- 30-0100604
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Private non-operating foundation
- Donations deductible (Pub 78)
- Private foundation, 30% limit
- Exempt since
- 2002
- Accounting year ends
- December
- Files
- Not required
- Category (NTEE)
- Philanthropy, voluntarism and grantmaking foundations (T30)
- Assets (IRS master file)
- $3,602,105
- Income (IRS master file)
- $434,260
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-PF | December 2025 | $317,074 | $226,310 | $3,602,105 | XML |
| 990-PF | December 2024 | $186,686 | $233,025 | $3,511,496 | XML |
| 990-PF | December 2023 | $145,122 | $249,639 | $3,557,837 | XML |
| 990-PF | December 2022 | – | – | – | IRS |
| 990-PF | December 2021 | – | – | – | IRS |
| 990-PF | December 2020 | – | – | – | IRS |
| 990-PF | December 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 30-0100604).
Questions about STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC
- What is the EIN of STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC?
- The employer identification number (EIN) of STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC is 30-0100604.
- Is STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2002.
- Are donations to STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Private foundation, 30% limit).
- Which annual return does STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC file?
- Form Not required.
- When is the next return of STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC due?
- The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC last file with the IRS?
- The latest return in the IRS public files is the 990-PF for the year ended December 2025.
- Who are the officers and directors of STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC?
- The 990-PF for the year ended December 31, 2025 lists 4 people; 0 received compensation from the organization.
- How much revenue does STEPHENSON KLOTZBURGER FAMILY FOUNDATION INC have?
- On its 990-PF for the year ended December 31, 2025 it reported revenue of $317,074, expenses of $226,310 and total assets of $3,602,105 at year end.
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