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Governance Register
US nonprofit · EIN 320020119 · Arlington, VAiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 320020119) - NTEE activity code, address.Board and officers IRS Form 990 annual filings, Part VII (directors, trustees, officers, key employees), read year by year to observe time served.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2024: assets, liabilities, staff, website, telephone, pay, related organisations (Schedule R).Finances by year IRS Form 990 e-file data - total revenue and total expenses by tax year.Renewal outlook Computed by Governance Register from the observed filing history and filed revenue. Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code SOUNK), downloaded 18 October 2026.State registers Colorado Secretary of State (17 October 2026).Licence US Federal Government public domain.How we handle data

Asts Foundation's network

15 people3 organisationsi15 people and 3 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (15). Violet dotted lines (7) are likely: the same full name sits on the current board of another organisation in the same register and region. Form 990 filings give names without a person identifier; SEC insider filings carry a CIK. It may be a different person.

The board

15 listediTime on the board is observed from the annual filings: the IRS files no appointment date, so the bar counts years from the first filing the person appears on - 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 in the tables. The network map shows same-name matches as likely links only, never as confirmed.Time served and departures are observed across annual filings. Observed time served is a lower bound - a member may have joined before the first year on record. The organisation reported 12 voting members of its governing body on its latest Form 990 Part VI; we list 15 in Part VII (Part VII does not always name every voting member).
NameRole as filedSinceOn the board
Thomas G Peters MD ChairChair2018
8 yrs
Christopher L Marsh MD FacsVice Chair2020
6 yrs
David C Mulligan MDDirector2023
3 yrs
Dorry L Segev MD PHD (also filed as Dorry L Segev MD PhD)Director2018
8 yrs
Debra Sundan MDCompany secretary2024
2 yrs
Elizabeth A Pomfret MD PHD (also filed as Elizabeth A Pomfret MD, Elizabeth A Pomfret MD PhD)Director2022
4 yrs
Ginny L Bumgardner MD PHD (also filed as Ginny L Bumgardner MD PhD)Director2018
8 yrs
James D Eason MD PHD (also filed as James D Eason MD PhD)Director2023
3 yrs
James F Markmann MD PHD (also filed as James F Markmann MD PhD)Director2022
4 yrs
Jayme E Locke MD MPH (also filed as Jayme Locke MD MPH)Director2022
4 yrs
Julie K Heimbach MD (also filed as Julie Heimbach MD)Treasurer2018
8 yrs
Majella B Doyle MD MBA (also filed as Majella Doyle MD MBA)Director2022
4 yrs
Matthew H Levine MD PHD (also filed as Matthew H Levine MD PhD)Director2023
3 yrs
Mark R Ghobrial MD PhDDirector2024
2 yrs
Robert Montgomery MD PhDDirector2024
2 yrs
Under 5 years5 to 6 years6 years or moreShow all 15 →

Officers and senior leadership

7 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Daniel D Garrett CAEExecutive Dir. - As of 06/2019since 2019
Diane Mossholder MA CAEChief Operating Officersince 2022
Diane MossholderChief Operating Officer2024
Kimberly A Gifford MBAExecutive Director2018
Kimberly A Gifford MBA - ExecProg MGR; Interim Edsince 2019
Laurel KulikoskyDeputy Directorsince 2018
Maggie Kebler-Bullock CfreExecutive Director/ CEOsince 2022

Pay and hours

year to 31 December 2024iFrom Part VII of the Form 990: compensation reported for each officer, director, trustee, key employee and highest-paid staff member, and the average hours a week they report. Most board members are unpaid; a blank means nothing was reported. Pay from related organisations is shown separately.
NameTitle as filedHours a weekPay from the organisationRelated organisationsOther
Thomas G Peters MDChair0.5$0
Christopher L Marsh MD FACSVice Chair1$0
Debra Sundan MDSecretary1$0
Julie Heimbach MDTreasurer1$0
Elizabeth A Pomfret MD PhDDirector5$0
Ginny L Bumgardner MD PhDDirector5$0
Majella B Doyle MD MBADirector0.5$0
James D Eason MD PhDDirector0.5$0
David C Mulligan MDDirector0.5$0
Matthew H Levine MD PhDDirector0.5$0
James F Markmann MD PhDDirector0.5$0
Mark R Ghobrial MD PhDDirector0.5$0
Robert Montgomery MD PhDDirector0.5$0
Jayme E Locke MD MPHDirector0.5$0
Dorry L Segev MD PhDDirector0.5$0
Maggie Kebler-BullockExecutive Director/ CEO2$0$237k$53k
Diane MossholderChief Operating Officer2$0$159k$41k

Colorado roster

15 listediOfficers, directors and trustees from the latest filing with the Colorado Secretary of State (document 20253032268). Titles are as filed; some entries are registered agents or custodians of records rather than board members. Source: data.colorado.gov, public domain.
NameTitle as filed
Kellie Lowery
Matthew H. Levine, MD, PhDDirector
Christopher L. Marsh, MD, FacsVice Chair
Maggie Kebler-Bullock, CfreNational Office: Executive Director
Debra Sudan, MDSecretary
Julie Heimbach, MDTreasurer
Thomas G. Peters, MDChair
David Reich, MDDirector
Linda Cendales, MDDirector
Kellie LowerySenior Director, Finance
Chris Freise, MD, PhDDirector
Robert Montgomery, MD, PhDDirector
James F. Markmann, MD, PhDDirector
Mark R. Ghobrial, MD, PhDDirector
Henrey B. Randall, MD, MBA, FacsDirector

About

Legal name
Asts Foundation
EIN
320020119
Address
1401 S Clark St Ste 1120, Arlington, VA, 22202-4165
State
Virginia
Mission
The mission of the ASTS Foundation is to promote philanthropy in the field of transplant surgery. Funds generated will be used to provide support for ASTS sponsored initiatives such as education, fellowships and other training, and research. (as filed on the Form 990)
Activity (NTEE)
H90 Medical research
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Medical Research
Size band
8 (IRS master file code)
Formed
2002
Principal officer
Maggie Kebler-Bullock (as named on the Form 990)
IRS ruling date
1 October 2003
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2024
IRS Publication 78
SOUNK (contributions deductible)

Most connected

Related organisations (Schedule R)

Longest observed on the filings

≥8years on the filingsThomas G Peters MD
≥8years on the filingsDorry L Segev MD PHD
≥8years on the filingsGinny L Bumgardner MD PHD
≥8years on the filingsJulie K Heimbach MD

Latest return

year to 31 December 2024iFigures from the newest Form 990 or 990-EZ in the IRS e-file releases of 2025 and 2026, for the year ending 31 December 2024. US dollars, as filed.
Total assets
$25.1m
Total liabilities
$1.1m
Net assets or fund balances
$24m
Contributions and grants received
$841k
Program service revenue
$0
Grants and similar paid out
$1m
Employees
0
Volunteers
50

Filed finances

1 yeariTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2024$1.8m$1.4m$471k

As filed on the IRS Form 990. US dollars.