Greenhill School
EIN 751022742 · TX · 501(c)03
The organisation
- 4141 SPRING VALLEY RD, ADDISON, TX, 75001-3615, TX 75001-3615
- Classified purpose: Education
- Size band: 9
Source: IRS Tax-Exempt Organization filings and the Exempt Organization Business Master File. US Federal Government public domain. Board history observed across annual filings.
Board at a glance
Tenure and departures are observed across annual filings. Observed tenure is a lower bound - a member may have joined before the first year on record. The organisation reported 37 voting members of its governing body on its latest Form 990 Part VI, which matches the board listed here.
Renewal outlook
High-priority approach observed from annual filings
- 10 board members were on the previous filing but not the latest one - several seats appear to have opened.
- Large organisation (revenue $75m) - the scale that runs a formal, external board search.
- The board chair has served at least 7 years (observed across filings) - a chair transition may be approaching.
A computed likelihood from the observed filing history and filed revenue. It is not a confirmed vacancy, and this edition never states that a nonprofit is recruiting. "Departures" mean a board member was on the previous filing but not the latest one, which usually means a seat opened but can also mean they were simply not listed that year.
Filed finances
| Tax year | Total revenue | Total expenses |
|---|---|---|
| 2023 | $75.1m | $60.1m |
As filed on the IRS Form 990.
The board (directors and trustees)
| Name | Title as filed | On the filings |
|---|---|---|
| Kenji Hashimoto Chair | FINANCE CHAIR/TREASURER | on filings since 2020 (at least 5y) |
| Lori Whitten Chair | ASST CHAIR/SEC. | on filings since 2020 (at least 5y) |
| ROY S KIM Chair (also filed as ROY KIM, Roy S Kim) | BOARD CHAIR | on filings since 2018 (at least 7y) |
| Artie Starrs | TRUSTEE | on filings since 2023 (at least 2y) |
| Bing XIE | TRUSTEE | on filings since 2020 (at least 5y) |
| Boaz Sidikaro | TRUSTEE | on filings since 2021 (at least 4y) |
| Cate Khan | TRUSTEE | on filings since 2024 (at least 1y) |
| Cheryl Alston | TRUSTEE | on filings since 2023 (at least 2y) |
| Christopher I Clark (also filed as Chris I Clark) | TRUSTEE | on filings since 2018 (at least 7y) |
| Cliff Weiner | TRUSTEE | first appears 2025 |
| Daniel T Phillips | TRUSTEE | on filings since 2019 (at least 6y) |
| Darlise Harrison | TRUSTEE | first appears 2025 |
| David Muller | TRUSTEE | on filings since 2021 (at least 4y) |
| Debby Ackerman | TRUSTEE | on filings since 2021 (at least 4y) |
| Doug Macmahon | TRUSTEE | on filings since 2024 (at least 1y) |
| E Pierce Marshall JR (also filed as E Pierce Marshall Jr) | TRUSTEE | on filings since 2018 (at least 7y) |
| Hardeep Sehgal | TRUSTEE | on filings since 2020 (at least 5y) |
| Holland P Gary | TRUSTEE | on filings since 2018 (at least 7y) |
| IAN Edmonds | TRUSTEE | on filings since 2024 (at least 1y) |
| Kamini Mamdani | TRUSTEE | on filings since 2021 (at least 4y) |
| Karen Johnson | TRUSTEE | on filings since 2024 (at least 1y) |
| Kathleem Kirby | TRUSTEE | first appears 2025 |
| Lauren Harris | TRUSTEE | first appears 2025 |
| LEE Szor | TRUSTEE | first appears 2025 |
| Lenore Diamond | TRUSTEE | on filings since 2021 (at least 4y) |
| Lester Levy JR (also filed as Lester Levy Jr) | TRUSTEE | on filings since 2018 (at least 7y) |
| Linda Wimberly | TRUSTEE | on filings since 2018 (at least 7y) |
| Louis Gennarelli | TRUSTEE | on filings since 2020 (at least 5y) |
| Meredith Wallace | TRUSTEE | first appears 2025 |
| Michael Waldman | TRUSTEE | on filings since 2018 (at least 7y) |
| Michelle Frymire | TRUSTEE | on filings since 2021 (at least 4y) |
| Molly Fulton Seeligson | TRUSTEE | on filings since 2019 (at least 6y) |
| Nauman A Khan | TRUSTEE | on filings since 2023 (at least 2y) |
| Rajesh Swaminathan | TRUSTEE | on filings since 2021 (at least 4y) |
| Rusty Jaggers | TRUSTEE | on filings since 2019 (at least 6y) |
| Todd Lemkin | TRUSTEE | first appears 2025 |
| Vaughn O Vennerberg II | TRUSTEE | on filings since 2024 (at least 1y) |
The board is the directors and trustees named in Part VII of the organisation's annual IRS Form 990; officers and senior staff are listed separately below, not counted as board. The IRS files no appointment date, so tenure here is observed from how many years a person appears on the filings - a lower bound, not a filed start date. Names are exactly as filed. The IRS publishes no person identifier, so this edition does not yet link a person across organisations.
Source: IRS Tax-Exempt Organization filings and the Exempt Organization Business Master File. US Federal Government public domain. Board history observed across annual filings.
Officers and senior leadership
Named in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
| Name | Title as filed | On the filings |
|---|---|---|
| Aaron White | CHIEF ADVANCEMENT OFFICER | since 2023 |
| Chad A Wabrek | Head of Athletics | since 2018 |
| Julie Diaz | CAO - Thru 10/2017 | 2018 |
| Kendra Grace | CFO/COO/ASSISTANT HEAD OF SCHOOL | since 2018 |
| LEE Hark | HEAD OF SCHOOL, EX-OFFICIO | since 2020 |
| LEE Hark Start 718 | HEAD OF SCHOOL, EX-OFFICIO | 2019 |
| Maryanna Phipps | DIR. OF ADMISSION & ENROLLMENT MGMT | 2024 |
| Michael Simpson | Head of Lower School | since 2018 |
| Melissa Orth | CFO/COO - Thru 08/2017 | 2018 |
| Scott Griggs | Head of School | since 2018 |
| Susan Holmes | CHIEF ADVANCEMENT OFFICER | since 2020 |
| Susan T Palmer | Head of Middle School | since 2018 |
| Thomas R Perryman | ASSOCIATE HEAD OF SCHOOL FOR MISSION, COMMUNITY, A | since 2019 |
| Trevor Worcester | Head of upper school | since 2018 |