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Governance Register
US nonprofit · EIN 562390650 · Tucson, AZiSource and licenceOrganisation record IRS Exempt Organizations Business Master File (EIN 562390650) - 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 tenure.Latest return IRS Form 990 series e-file data - 990 for the year to 31 December 2024: assets, liabilities, staff, website, telephone, pay, grants paid (Schedule I).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 (us-approach-v4-clean). Not a statement that the organisation is recruiting.Deductibility IRS Publication 78 data (code PC), downloaded 18 October 2026.Licence US Federal Government public domain.How we handle data

Lsst Inc's network

19 people2 organisationsi19 people and 2 organisations on this map.The large node is the subject of this page. Solid lines are what the register itself records (19). Violet dotted lines (3) 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

19 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.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 11 voting members of its governing body on its latest Form 990 Part VI; we list 19 in Part VII (Part VII does not always name every voting member).
NameRole as filedSinceOn the board
Lucas Macri ChairChairman (Until 5/23)2020
6 yrs
Michael Wood-Vasey ChairChairman (From 5/23)2020
6 yrs
Adriano FontanaBoard Member2020
6 yrs
Buell JannuziBoard Member2018
8 yrs
David MacfarlaneBoard Member2018
8 yrs
Ezequiel TreisterBoard Member2018
8 yrs
Ian ShipseyBoard Member2018
8 yrs
James DavenportBoard Member2023
3 yrs
Kathryn JohnstonVice Chair2020
6 yrs
Knut OlsenBoard Member2021
5 yrs
Larry GladneyTreasurer2018
8 yrs
Mederic BoquienBoard Member2022
4 yrs
Pat BurchatBoard Member2020
6 yrs
Rachel MandelbaumBoard Member2021
5 yrs
Raffaella MarguttiBoard Member2020
6 yrs
Risa WechslerBoard Member2023
3 yrs
Rosaria BonitoBoard Member2023
3 yrs
Suzanne HawleyBoard Member2018
8 yrs
Will ClarksonBoard Member2022
4 yrs
Under 5 years5 to 6 years6 years or moreShow all 19 →

Officers and senior leadership

5 listediNamed in Part VII as officers, key employees or highest-compensated staff - not board members, shown for completeness.
NameTitle as filedOn the filings
Beth WillmanCEO2023
Beth Willman LefkonCEO2023
Daniel CalabbreseCorporate secretary2023
Daniel CalabreseCorporate secretarysince 2018
Patricia EliasonExecutive Officer (Until 10/22)since 2018

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
Beth WillmanCEO40$196k$31k
Will ClarksonBoard Member (Until 6/24)1$18k
Daniel CalabreseCorporate Secretary4$13k$10k
Larry GladneyTreasurer1$0
Michael Wood-VaseyChair4$0
Kathryn JohnstonVice Chair1$0
Adam BoltonBoard Member (Begin 10/24)1$0
Rosaria BonitoBoard Member1$0
James DavenportBoard Member1$0
Carlos FerreiraBoard Member1$0
Jenny GreeneBoard Member1$0
Buell JannuziBoard Member1$0
Jeremy KubicaBoard Member1$0
David MacfarlaneBoard Member (Until 10/24)1$0
Pat McCarthyBoard Member (Begin 10/24)1$0
Gautham NaranyanBoard Member (Begin 6/24)1$0
Knut OlsenBoard Member (Until 10/24)1$0
Ian ShipseyBoard Member (Until 10/24)1$0
Risa WechslerBoard Member1$0

About

Legal name
LSST Inc
EIN
562390650
Address
933 N Cherry Ave, Tucson, AZ, 85721-0009
State
Arizona
Mission
To enhance rubin lsst discovery through advanced data tools, training, and inclusive collaborations for lsst researchers so that any scientist with a good question for the lsst survey can engage with these advanced resources to reveal the mysteries of the universe. (as filed on the Form 990)
Activity (NTEE)
U31 Science and technology research
IRS classification
501(c)03 (tax-exempt under section 501(c)(3) where shown)
Classified purpose
Science & Technology
Size band
7 (IRS master file code)
Formed
2003
Principal officer
Beth Willman (as named on the Form 990)
IRS ruling date
1 April 2004
Status
Code 01 (unconditional exemption)
Form 990 filings on record
6, latest 2023
IRS Publication 78
PC (contributions deductible)

Most connected

Longest observed on the filings

≥8years on the filingsBuell Jannuzi
≥8years on the filingsDavid Macfarlane
≥8years on the filingsEzequiel Treister
≥8years on the filingsIan Shipsey

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
$4.8m
Total liabilities
$2.6m
Net assets or fund balances
$2.1m
Contributions and grants received
$3.5m
Program service revenue
$0
Grants and similar paid out
$2.1m
Employees
0
Volunteers
16

Filed finances

3 yearsiTotals as filed on the IRS Form 990 (revenue and expenses), by tax year.
Tax yearTotal revenueTotal expensesSurplus or deficit
2023$643k$769kDeficit $126k
2022$3m$2.4m$521k
2021$918k$1.1mDeficit $201k

As filed on the IRS Form 990. US dollars.

Grants paid

25+ listediFrom Schedule I of the Form 990: grants and assistance to organisations in the United States, largest first (up to 25). Schedule I is filed only by organisations that gave more than $5,000 to any one recipient.
RecipientPurposeAmount
University of ArizonaTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$270k
Northwestern UniversityBrinson dsfp andtempleton fellowshipssupport postdoctoralrubin lsst research$219k
Research Foundation of the City University of New YorkTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$142k
Washington State UniversityTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$136k
Rutgers UniversityTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$126k
University of Pittsburgh of the Commonwealth System of Higher EducationHsf inclusive collab &schmidt lincc frameworksenabling rubin lsst dataand collaborative tools$121k
Las Cumbres ObservatoryTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$119k
University of WashingtonTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$104k
Johns Hopkins UniversityTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$104k
Smithsonian Astrophysical ObservatoryTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$52k
NortheasternTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$39k
StanfordTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$36k
Cal Poly Corporation Dba Cal Poly PartnersHsf inclusive collab andtempleton fellowshipssupporting lsst research andcollaboration$35k
Hobart and William Smith CollegesInclusive collaboration in rubin lsst science designed with support from heising-simons$24k
Illinois Institute of TechnologyInclusive collaboration in rubin lsst science designed with support from heising-simons$24k
Rider UniversityInclusive collaboration in rubin lsst science designed with support from heising-simons$24k
San Diego State University FoundationInclusive collaboration in rubin lsst science designed with support from heising-simons$24k
Board of Trustees of the University of IllinoisSchmidt sciences-funded program advancing software frameworks for rubin lsst science$23k
Cornell UniversityTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$17k
University of California MercedTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$17k
University of North CarolinaTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$17k
Benedictine UniversityTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$17k
University of DelawareTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$17k
Olin CollegeTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$12k
Columbia UniversityTempleton foundation fellowships supporting postdoctoral research using rubin lsst data$11k