Sior Foundation
SIOR Foundation is a Washington, DC-based public charity that supports education, scholarships, research, and professional development in commercial real estate. Its programs serve students, emerging professionals, and current commercial real estate professionals.
Sior Foundation at a glance
In short: Sior Foundation gave $272K across 16 grants in 2025 (avg $17K), top state District of Columbia. 31% of 2025 grantees were new. Source: 2025 IRS Form 990.
- Annual giving (2025)
- $271,614
- -17.0% vs 2024
- Grants made (2025)
- 16
- +6.7% vs 2024
- Average grant
- $16,976
- -22.1% vs 2024
- Median grant
- $8,000
- Total assets
- $8,508,852
- +5.1% vs 2024
- New grantees (estimate)
- 31% first-time grantees (5 of 16, 2025; small sample)
- Primary geography
- District of Columbia (43% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Sior Foundation
- How to Apply
-
The Foundation welcomes grant ideas and proposals; its website directs prospective applicants to inquire about the process. Chapter scholarship and program funding is applied for by SIOR chapters. The Mildred C. Hanson scholarship is for qualified female undergraduate or graduate students in real estate or business-related programs at accredited universities. The SIOR-SparrowHawk Foundation Excellence Award is for female students pursuing a Master of Real Estate degree at Texas A&M’s Mays Business School.
- Contact
Mailing address: 1307 New York Avenue Nw 703, Washington, DC 20005
Phone: (202) 449-8208
Website: https://siorfoundation.org
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Open Grants
6 open opportunities from Sior Foundation
Chapter Matching Scholarship Program
Sior Foundation
Amount
Up to $10,000 per chapter
Deadline
Deadline not published
Len Caldeira Scholarships (SIOR Chicago Chapter)
Sior Foundation
Amount
Up to $3,000 per recipient
Deadline
Deadline not published
Mildred C. Hanson, SIOR, Memorial Scholarship
Sior Foundation
Amount
Varies (multiple recipients per year)
Deadline
Deadline not published
Who Sior Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Society of Industrial and Office Realtors ($118K). Together the top 10 received $232K.
Grant Size Distribution
71 grants across all recorded years
The most common grant size was under $50K: 64 grants of 71 (90%).
Geographic Focus
Where this funder awards grants
The Foundation’s Mildred C. Hanson scholarship has a national U.S. scope, and its professional continuing-education scholarship is for applicants in the United States or Canada. Chapter programs operate through SIOR chapters. In 2025, 43% of grant dollars went to recipients in Washington, DC, 19% to North Carolina, 5% to California, 4% to Maryland, and 4% to Washington state.
Grant Distribution by State
Share of 2025 grant dollars across all 16 itemized grants.
States
Cities
Is Sior Foundation open to new grantees?
31%
first-time grantees, 2025
In 2025, 5 of 16 grantees (31%) were first-time recipients. With only 16 grantees, that is a small sample: one grantee more or less moves the share by about 6 points. First grants averaged $12K; repeat grants $19K. How we count
Medians: $10K first-time, $8K repeat.
- 56% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (−2%). Method
Estimate from itemized grant lists in IRS Form 990 filings (2019–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $165K (2021) to $327K (2024). In 2025 it made 16 grants totaling $272K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Society of Industrial and Office Realtors Washington, DC | To support informative articles on timely, relevant topics in commercial real estate industry on current industry and economic trends. To support commercial real estate educational programming that included speakers from the commercial real estate industry on current industry and economic trends. | $118,000 |
| Sior Carolinas Chapter Greensboro, NC | To support students enrolled at two accredited mre programs; to support commercial real estate educational programming that included speakers from the commercial real estate industry on current industry and economic trends; to support 19 students' attendance at industry related events | $26,484 |
| UNC Charlotte Charlotte, NC | To help establish endowed scholarship for students engaged in real estate studies | $25,000 |
| Sior Mddcnova Chapter Columbia, MD | To support commercial real estate educational programming that included speakers from the commercial real estate industry on current industry and economic trends | $10,000 |
| Sior Washington Chaper Kirkland, WA | To support commercial real estate educational programming that included speakers from the commercial real estate industry on current industry and economic trends | $10,000 |
| Crei Events LLC Dunwoody, GA | To support commercial real estate educational programming that included speakers from the commercial real estate industry on current industry and economic trends | $9,500 |
| Sior Connecticut Chapter Danbury, CT | To support four students studying at an accredited universities in real estate related degrees; to support six students' attendance at industry related events | $9,377 |
| Sior North Texas Chapter Dallas, TX | To support ten students studying at three accredited universities in real estate related degrees. | $8,000 |
| Sior Philadelphia Chapter Lemoyne, PA | To support four students studying at three accredited universities in real estate related degrees. | $8,000 |
| Sior San Diego Chapter San Diego, CA | To support two students studying at two accredited universities in real estate related degrees. To support commercial real estate educational programming that included speakers from the commercial real estate industry on current industry and economic trends | $8,000 |
Ready to take the next step with Sior Foundation?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $8,508,852 | $792,200 | $817,178 | $271,614 | 16 | $310,941 |
| 2024 | $8,093,809 | $797,704 | $722,043 | $327,078 | 15 | $374,989 |
| 2023 | $7,222,078 | $663,262 | $567,578 | $236,277 | 14 | $184,706 |
| 2022 | $6,677,357 | $1,402,912 | $586,566 | $278,533 | 16 | $915,863 |
| 2021 | $7,527,340 | $479,437 | $389,457 | $165,255 | 10 | $129,802 |
| 2020 | $6,314,008 | $611,465 | $424,813 | $186,848 | 15 | $222,170 |
| 2019 | $5,220,218 | $585,358 | $468,431 | $183,172 | 13 | $210,698 |
Research compiled by Grantable AI from public sources. Last updated October 2026.
Mission & Focus Areas
The Foundation’s stated mission is to promote and support initiatives that educate, enhance, and expand the commercial real estate community. Its website describes support for educational programs, scholarship programs, and research projects, including efforts to promote best practices and responsible and sustainable development.
Its programs include student scholarships and conference mentoring, chapter education and scholarship initiatives, and continuing education for commercial real estate professionals. The Foundation’s 2024 filing described support for real estate education and leadership training, articles on commercial real estate, chapter scholarships, educational speakers and community programs, and student attendance at industry events.
Among its 2025 grantees, the Society of Industrial and Office REALTORS describes itself as a professional association that certifies expertise in industrial and office real estate brokerage and provides education at its conferences. The Foundation of the University of North Carolina at Charlotte describes its mission as supporting the university’s academic and educational purposes, including operations, educational programs, and scholarships.
Grantmaking
In filing year 2025, the Foundation gave 16 grants totaling $271,614. Grant amounts ranged from $5,250 to $118,000, with a median grant of $8,000. Its largest listed grants included $118,000 to the Society of Industrial and Office REALTORS for commercial real estate articles and educational programming, $26,484 to the SIOR Carolinas Chapter for student support and educational programming, and $25,000 to the Foundation of the University of North Carolina at Charlotte to help establish an endowed scholarship for students engaged in real estate studies. Other listed awards supported chapter scholarships, student attendance at industry events, educational programming, and a program to advance women’s careers in commercial real estate.
The Foundation’s website invites grant ideas and proposals for education or research that could benefit the commercial real estate industry. Its chapter programs provide matching support for scholarships and educational events; SIOR chapters can apply for up to $10,000 through the Chapter Matching Scholarship Program. The website also describes a $2,500 matching grant for chapter speaker-related expenses and an unmatched grant of up to $5,000 for qualifying small-chapter events.
The website lists a $2,500 David T. Houston Jr., SIOR Memorial Scholarship for an active, qualified commercial real estate professional with at least three years of experience in the United States or Canada, for continuing education. This is a scholarship for a professional participant rather than a grant to an outside organization. The listed July 31 application deadline has passed as of October 2, 2026.
Leadership & Key People
Leadership team and compensation from IRS filings
The Foundation’s 2025 filing lists Theodore Konigsberg as president, Kraig Heeter as president-elect, Stan Kleweno as treasurer, and William Burgess as vice president. It also lists Richard Sleasman as immediate past president and Joseph Barna, Kevin Crowley, Chris Curtis, Allen Gump, and David Hagan as past presidents.
The Foundation’s website leadership roster lists Kraig Heeter as president, William Burgess as president-elect, Mark Duclos as vice president, Stan Kleweno as treasurer, and Theodore Konigsberg as immediate past president.
Sior Foundation is led by Theodore Konigsberg, President since 2025 (on filings since 2019); 1 of 46 officers listed in 2025 is compensated.
Officers on the 2025 filing
Theodore Konigsberg
President
Vice President, Chair Grants & Scholorship → Vice President, Chair Grants & S'ship, 2024
Vice President, Chair Grants & S'ship → President, 2025
On filings since 2019
1 hr/week
No compensation reported
Corrine Nowak
Director
On filings since 2020
37.5 hrs/week
$95K (2024) → $103K (2025)
Adrian Arriaga
Trustee
On filings since 2019
0.5 hrs/week
No compensation reported
John Barker Jr.
Trustee
On filings since 2019
0.5 hrs/week
No compensation reported
Mark B. Goode
Trustee
On filings since 2019
0.5 hrs/week
No compensation reported
Matthew Leguen De Lacroix
Trustee
On filings since 2019
0.5 hrs/week
No compensation reported
Matthew R. Olson
Trustee
On filings since 2019
0.5 hrs/week
No compensation reported
Michael Capobiano
Trustee
On filings since 2019
0.5 hrs/week
No compensation reported
Peter Richardson
Trustee
On filings since 2019
0.5 hrs/week
No compensation reported
Michael Falk
Trustee
On filings since 2020
0.5 hrs/week
No compensation reported
Chris Garcia
Trustee
On filings since 2021
0.5 hrs/week
No compensation reported
William Hanson
Trustee
On filings since 2021
0.5 hrs/week
No compensation reported
Daniel Palmeri
Trustee
On filings since 2023
0.5 hrs/week
No compensation reported
J. Andrew Mills
Trustee
On filings since 2023
0.5 hrs/week
No compensation reported
Jeff Wilke
Trustee
On filings since 2023
0.5 hrs/week
No compensation reported
John M. Adams III
Trustee
On filings since 2023
0.5 hrs/week
No compensation reported
Mark J. Duclos
Trustee
On filings since 2023
0.5 hrs/week
No compensation reported
Trimble Green
Trustee
On filings since 2023
0.5 hrs/week
No compensation reported
Alfredo Gutierrez
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Blake Garrett
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Brian Lightle
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Eric Fleske
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Jim Bijou
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Joshua Wyss
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Kim Baker
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Melanie Jackson
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Michael McFall
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Michelle Hudson
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Tom Kennedy
Trustee
New on the 2025 filing
0.5 hrs/week
No compensation reported
Aaron Barnard
Emeritus
Imm Past President → Past President, 2021
Past President → Emeritus, 2025
On filings since 2019
0.5 hrs/week
No compensation reported
Albert M. McNeel
Past President
President → Immediate Past President, 2023
Immediate Past President → Past President, 2025
On filings since 2019
0.5 hrs/week
No compensation reported
Bill Ginder
Emeritus
Imm Past President → Past President, 2020
Past President → Emeritus, 2025
On filings since 2019
0.5 hrs/week
No compensation reported
David B. Hagan
Past President
On filings since 2019
0.5 hrs/week
No compensation reported
Joseph V. Barna
Past President
On filings since 2019
0.5 hrs/week
No compensation reported
Kevin J. Crowley
Past President
On filings since 2019
0.5 hrs/week
No compensation reported
Kraig Heeter
President-Elect
Trustee → Chair Fundraising, 2023
Chair Fundraising → President-Elect, 2025
On filings since 2019
1 hr/week
No compensation reported
Lynn E. Reich
Emeritus
Past President → Emeritus, 2025
On filings since 2019
0.5 hrs/week
No compensation reported
Michael W. Ohmes
Emeritus
Past President → Emeritus, 2025
On filings since 2019
0.5 hrs/week
No compensation reported
Peter O. Hanson
Past President
Advisory Committee Chair → Chair - Advisory Committee, 2021
Chair - Advisory Committee → Past President, 2025
On filings since 2019
0.5 hrs/week
No compensation reported
Randall Walker
Past President
On filings since 2019
0.5 hrs/week
No compensation reported
Richard Sleasman
Imm Past President
President-Elect → President, 2023
President → Imm Past President, 2025
On filings since 2019
1 hr/week
No compensation reported
Stan Kleweno
Treasurer
On filings since 2019
1 hr/week
No compensation reported
Thomas McCormick III
Past President
Past President & Sior CEO → Past President, 2021
On filings since 2019
0.5 hrs/week
No compensation reported
William A. Burgess
Vice President
Trustee → Vice President, 2025
On filings since 2019
1 hr/week
No compensation reported
Allen Gump
Past President
On filings since 2023
0.5 hrs/week
No compensation reported
Chris Curtis
Past President
New on the 2025 filing
0.5 hrs/week
No compensation reported
Former officers (32)
- Former: Barbara Johnson (2019–2024) — President-Elect & Chair
- Former: Christopher Garcia (2019–2024) — Trustee
- Former: Christopher W. Curtis (2019–2024) — Past President
- Former: J. Peter Whatmore (2019–2024) — Past President
- Former: Jack O'Donoghue (2019–2024) — Trustee
- Former: Nancy Morse (2019–2024) — Trustee
- Former: Robert J. Dikman (2019–2024) — Trustee
- Former: Robert J. Staniforth (2019–2024) — Past President
- Former: Terry E. Smith (2019–2024) — Trustee
- Former: Mike Ohmes (2024) — Past President
- Former: Daniel J. Doherty (2019–2022) — Trustee
- Former: David L. Schiller (2019–2022) — Trustee
- Former: Garry N. Bobke (2019–2022) — Trustee
- Former: H. Allen Gump (2019–2022) — Past President
- Former: Jesse Laikin (2019–2022) — Trustee
- Former: Robert Horn (2021–2022) — Trustee
- Former: Elizabeth Koenst Lokken (2022) — Executive Director
- Former: Christopher Kirk (2019–2021) — Trustee
- Former: D. Sheldon Johnson (2019–2021) — Trustee
- Former: Patricia J. Loveall (2019–2021) — Past President
- Former: Robert Hammond (2019–2021) — Executive Director
- Former: Elizabeth Koenst (2021) — Executive Director
- Former: Daniel Wilkinson (2019–2020) — Trustee
- Former: Gary Marsh (2019–2020) — Trustee
- Former: James Boudrot (2019–2020) — Trustee
- Former: Milton Charbonneau (2019–2020) — Trustee
- Former: Patti Dillon (2019–2020) — Trustee
- Former: John Aldrich (2019) — Past President
- Former: John Dohm (2019) — Trustee
- Former: Michael Roberts (2019) — Executive Director
- Former: Patrick Senter (2019) — Trustee
- Former: Ronald King (2019) — Trustee
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $103K, to Corrine Nowak (Director).
Frequently asked questions about Sior Foundation
How much does Sior Foundation give each year?
Sior Foundation gave $272K across 16 grants in 2025, according to its 2025 IRS Form 990. In 2024 it gave $327K across 15 grants.
What is Sior Foundation's typical grant size?
Sior Foundation's median grant in 2025 was $8,000, and its average grant was $16,976, across 16 grants on its 2025 IRS Form 990. Organizations receiving their first grant from Sior Foundation that year got $12K on average.
Where does Sior Foundation give grants?
Sior Foundation's top state is District of Columbia, with 43% of the grant dollars itemized on its 2025 IRS Form 990. The next largest states were North Carolina (19%) and California (5%).
Does Sior Foundation give general operating support?
Not in 2025: none of the 16 grants with a stated purpose on Sior Foundation's 2025 IRS Form 990 were described as general or operating support.
Who are Sior Foundation's largest grantees?
Sior Foundation's largest 2025 grantees include Society of Industrial and Office Realtors ($118,000), Sior Carolinas Chapter ($26,484) and UNC Charlotte ($25,000), according to its 2025 IRS Form 990. Together they received 62% of its itemized 2025 grant dollars.
How large is Sior Foundation?
Sior Foundation reported $8.5M in total assets on its 2025 IRS Form 990. Its revenue that year was $792K.
What does Sior Foundation fund?
The Foundation’s stated mission is to promote and support initiatives that educate, enhance, and expand the commercial real estate community. See mission & focus areas ↑
How do I apply for a grant from Sior Foundation?
The Foundation welcomes grant ideas and proposals; its website directs prospective applicants to inquire about the process. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Sior Foundation's EIN?
Sior Foundation's EIN (Employer Identification Number) is 52-0808480. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated October 2026. Sourced from IRS Form 990 filings. Research dossier generated October 2026.
Data update history
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2020 (received by the IRS March 23, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS May 10, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS July 7, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS June 17, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS June 24, 2025)
- Added Form 990 for fiscal year 2019 (received by the IRS July 6, 2020)
- Added Form 990 for fiscal year 2025 (received by the IRS June 17, 2026)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work Sior Foundation funds
Community Improvement & Capacity Building Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in Sior Foundation's focus areas in our free grants database
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Cite this profile
Grantable. (2026). Sior Foundation funder profile. GrantGraph. Retrieved October 17, 2026, from https://grantable.co/funders/sior-foundation-morg_d35e057d67d54c3aa0017692af7cebfe
BibTeX
@misc{grantable_520808480_2026,
author = {{Grantable}},
title = {{Sior Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/sior-foundation-morg_d35e057d67d54c3aa0017692af7cebfe},
note = {Accessed 2026-10-17. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Sior Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
Sior Foundation down — hundreds of funders to go?